Clinical Trial Results:
A Randomized, 3 Arm, Multicenter, Phase III Study to Evaluate the Efficacy and the Safety of T-DM1 Combined With Pertuzumab or
T-DM1 Combined With Pertuzumab-Placebo (Blinded for Pertuzumab), Versus the Combination of Trastuzumab Plus Taxane, as First Line Treatment in HER2 Positive Progressive or Recurrent Locally Advanced or Metastatic Breast Cancer (MBC)
Summary
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EudraCT number |
2009-017905-13 |
Trial protocol |
AT ES DE FR SE DK HU CZ GB IT BE PT GR |
Global end of trial date |
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Results information
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Results version number |
v1 |
This version publication date |
07 Jan 2017
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First version publication date |
07 Jan 2017
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Other versions |
v2 |
Trial Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
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Trial identification
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Sponsor protocol code |
BO22589
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT01120184 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
F. Hoffmann-La Roche AG
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Sponsor organisation address |
Grenzacherstrasse 124, CH, Basel, Switzerland, 4070
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Public contact |
Roche Trial Information Hotline, F. Hoffmann-La Roche AG, +41 61 6878333, global.trial_information@roche.com
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Scientific contact |
Roche Trial Information Hotline, F. Hoffmann-La Roche AG, +41 61 6878333, global.trial_information@roche.com
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Paediatric regulatory details
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Is trial part of an agreed paediatric investigation plan (PIP) |
No
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Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Results analysis stage
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Analysis stage |
Interim
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Date of interim/final analysis |
16 Sep 2014
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Is this the analysis of the primary completion data? |
Yes
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Primary completion date |
16 Sep 2014
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Global end of trial reached? |
No
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General information about the trial
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Main objective of the trial |
This randomized, three-arm, multicenter, Phase III study was designed to evaluate the efficacy and safety of trastuzumab emtansine with and without pertuzumab, versus the combination of trastuzumab with taxane therapy, among participants with human epidermal growth factor receptor 2 (HER2)-positive locally advanced breast cancer (LABC) or metastatic breast cancer (MBC) who had not received prior chemotherapy for their metastatic disease.
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Protection of trial subjects |
All investigators were trained according to applicable Sponsor Standard Operating Procedures (SOPs). Roche and the investigators strictly adhered to the stated provisions in these guidelines. This was documented by the investigator’s signature on the protocol agreeing to carry out all of its terms in accordance with the applicable regulations and law and to follow International Conference on Harmonization (ICH) Good Clinical Practice (GCP) guidelines.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
18 Jun 2010
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Long term follow-up planned |
Yes
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Long term follow-up rationale |
Efficacy, Safety | ||
Long term follow-up duration |
67 Months | ||
Independent data monitoring committee (IDMC) involvement? |
Yes
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Population of trial subjects
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Number of subjects enrolled per country |
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Country: Number of subjects enrolled |
Germany: 41
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Country: Number of subjects enrolled |
Korea, Republic of: 79
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Country: Number of subjects enrolled |
Belgium: 20
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Country: Number of subjects enrolled |
Bahamas: 6
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Country: Number of subjects enrolled |
Portugal: 6
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Country: Number of subjects enrolled |
Colombia: 5
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Country: Number of subjects enrolled |
Panama: 5
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Country: Number of subjects enrolled |
Switzerland: 4
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Country: Number of subjects enrolled |
Greece: 2
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Country: Number of subjects enrolled |
Turkey: 2
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Country: Number of subjects enrolled |
Sweden: 2
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Country: Number of subjects enrolled |
United States: 131
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Country: Number of subjects enrolled |
Brazil: 88
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Country: Number of subjects enrolled |
Japan: 82
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Country: Number of subjects enrolled |
United Kingdom: 74
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Country: Number of subjects enrolled |
France: 72
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Country: Number of subjects enrolled |
Italy: 53
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Country: Number of subjects enrolled |
Russian Federation: 50
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Country: Number of subjects enrolled |
Spain: 43
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Country: Number of subjects enrolled |
Thailand: 39
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Country: Number of subjects enrolled |
Poland: 31
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Country: Number of subjects enrolled |
Bosnia and Herzegovina: 25
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Country: Number of subjects enrolled |
Canada: 23
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Country: Number of subjects enrolled |
Philippines: 23
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Country: Number of subjects enrolled |
Macedonia, the former Yugoslav Republic of: 21
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Country: Number of subjects enrolled |
Peru: 20
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Country: Number of subjects enrolled |
Czech Republic: 19
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Country: Number of subjects enrolled |
Hungary: 19
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Country: Number of subjects enrolled |
Australia: 18
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Country: Number of subjects enrolled |
Taiwan: 17
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Country: Number of subjects enrolled |
Mexico: 16
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Country: Number of subjects enrolled |
Guatemala: 12
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Country: Number of subjects enrolled |
Austria: 10
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Country: Number of subjects enrolled |
Malaysia: 10
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Country: Number of subjects enrolled |
New Zealand: 8
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Country: Number of subjects enrolled |
Denmark: 7
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Country: Number of subjects enrolled |
Romania: 6
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Country: Number of subjects enrolled |
Argentina: 6
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Worldwide total number of subjects |
1095
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EEA total number of subjects |
405
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Number of subjects enrolled per age group |
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In utero |
0
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Preterm newborn - gestational age < 37 wk |
0
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Newborns (0-27 days) |
0
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Infants and toddlers (28 days-23 months) |
0
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Children (2-11 years) |
0
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Adolescents (12-17 years) |
0
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Adults (18-64 years) |
912
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From 65 to 84 years |
179
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85 years and over |
4
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Recruitment
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Recruitment details |
A total of 1629 participants were screened, of whom 1095 were randomized. There were 534 participants who failed screening, most often due to non-centrally confirmed HER2 status or abnormal laboratory results. | ||||||||||||||||||||||||||||||||||||||||
Pre-assignment
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Screening details |
A total of 1629 participants were screened, of whom 1095 were randomized. There were 534 participants who failed screening, most often due to non-centrally confirmed HER2 status or abnormal laboratory results. | ||||||||||||||||||||||||||||||||||||||||
Period 1
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Period 1 title |
Overall Study (overall period)
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Is this the baseline period? |
Yes | ||||||||||||||||||||||||||||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Double blind | ||||||||||||||||||||||||||||||||||||||||
Roles blinded |
Subject, Investigator | ||||||||||||||||||||||||||||||||||||||||
Blinding implementation details |
The study was considered open-label with respect to trastuzumab and trastuzumab emtansine treatment; however, participants and investigators were blinded with respect to pertuzumab or placebo.
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Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Trastuzumab + Taxane | ||||||||||||||||||||||||||||||||||||||||
Arm description |
Participants received trastuzumab plus either docetaxel or paclitaxel. The regimen was chosen at the investigator's discretion. Option 1: trastuzumab 8 mg/kg via IV infusion on Day 1 of Cycle 1, then 6 mg/kg IV on Day 1 of each subsequent 3-week cycle; plus a minimum of 6 cycles with docetaxel 75 or 100 mg/m^2 IV on Day 1 of each 3-week cycle. Option 2: trastuzumab 4 mg/kg IV on Day 1 of Cycle 1, then 2 mg/kg IV weekly beginning on Day 8 of Cycle 1; plus a minimum of 18 weeks with paclitaxel 80 mg/m^2 IV weekly. Treatment continued until disease progression, unacceptable toxicity, or study termination. If trastuzumab, docetaxel or paclitaxel were discontinued for toxicity, the other agent could be continued as monotherapy. | ||||||||||||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||||||||||||
Investigational medicinal product name |
Trastuzumab
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Powder for concentrate for solution for infusion
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Routes of administration |
Intravenous use
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Dosage and administration details |
Trastuzumab was administered via IV infusion and dosed depending upon the taxane selected. Participants received either 8 mg/kg on Day 1 of Cycle 1 followed by 6 mg/kg on Day 1 of each subsequent 3-week cycle, or 4 mg/kg on Day 1 of Cycle 1 followed by 2 mg/kg weekly beginning on Day 8 of Cycle 1.
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Investigational medicinal product name |
Docetaxel
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Powder and solvent for solution for infusion
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Routes of administration |
Intravenous use
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Dosage and administration details |
Docetaxel was administered via IV infusion as 75 or 100 mg/m^2 on Day 1 of each 3-week cycle.
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Investigational medicinal product name |
Paclitaxel
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Concentrate for solution for infusion
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Routes of administration |
Intravenous use
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Dosage and administration details |
Paclitaxel was administered via IV infusion as 80 mg/m^2 weekly.
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Arm title
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Trastuzumab Emtansine + Placebo | ||||||||||||||||||||||||||||||||||||||||
Arm description |
Participants received trastuzumab emtansine plus pertuzumab-placebo. Trastuzumab emtansine was administered as 3.6 mg/kg via IV infusion, following completion of the placebo IV infusion, on Day 1 of each 3-week cycle. Treatment continued until disease progression, unacceptable toxicity, or study termination. | ||||||||||||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||||||||||||
Investigational medicinal product name |
Placebo
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Concentrate for solution for infusion
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Routes of administration |
Intravenous use
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Dosage and administration details |
Participants received the placebo equivalent to pertuzumab via IV infusion on Day 1 of each 3-week cycle.
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Investigational medicinal product name |
Trastuzumab emtansine
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Powder for concentrate for solution for infusion
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Routes of administration |
Intravenous use
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Dosage and administration details |
Trastuzumab emtansine was administered as 3.6 mg/kg via IV infusion on Day 1 of each 3-week cycle.
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Arm title
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Trastuzumab Emtansine + Pertuzumab | ||||||||||||||||||||||||||||||||||||||||
Arm description |
Participants received trastuzumab emtansine plus pertuzumab. Trastuzumab emtansine was administered as 3.6 mg/kg via IV infusion, following completion of the pertuzumab IV infusion, on Day 1 of each 3-week cycle. Pertuzumab was given as 840 mg IV on Day 1 of Cycle 1, then 420 mg IV on Day 1 of each subsequent 3-week cycle. Treatment continued until disease progression, unacceptable toxicity, or study termination. | ||||||||||||||||||||||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||||||||||||||||||||||
Investigational medicinal product name |
Pertuzumab
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Concentrate for solution for infusion
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Routes of administration |
Intravenous use
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Dosage and administration details |
Pertuzumab was administered via IV infusion as 840 mg on Day 1 of Cycle 1, followed by 420 mg on Day 1 of each subsequent 3-week cycle.
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Investigational medicinal product name |
Trastuzumab emtansine
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Powder for concentrate for solution for infusion
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Routes of administration |
Intravenous use
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Dosage and administration details |
Trastuzumab emtansine was administered as 3.6 mg/kg via IV infusion on Day 1 of each 3-week cycle.
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Baseline characteristics reporting groups
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Reporting group title |
Trastuzumab + Taxane
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Reporting group description |
Participants received trastuzumab plus either docetaxel or paclitaxel. The regimen was chosen at the investigator's discretion. Option 1: trastuzumab 8 mg/kg via IV infusion on Day 1 of Cycle 1, then 6 mg/kg IV on Day 1 of each subsequent 3-week cycle; plus a minimum of 6 cycles with docetaxel 75 or 100 mg/m^2 IV on Day 1 of each 3-week cycle. Option 2: trastuzumab 4 mg/kg IV on Day 1 of Cycle 1, then 2 mg/kg IV weekly beginning on Day 8 of Cycle 1; plus a minimum of 18 weeks with paclitaxel 80 mg/m^2 IV weekly. Treatment continued until disease progression, unacceptable toxicity, or study termination. If trastuzumab, docetaxel or paclitaxel were discontinued for toxicity, the other agent could be continued as monotherapy. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Trastuzumab Emtansine + Placebo
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Reporting group description |
Participants received trastuzumab emtansine plus pertuzumab-placebo. Trastuzumab emtansine was administered as 3.6 mg/kg via IV infusion, following completion of the placebo IV infusion, on Day 1 of each 3-week cycle. Treatment continued until disease progression, unacceptable toxicity, or study termination. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Trastuzumab Emtansine + Pertuzumab
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Reporting group description |
Participants received trastuzumab emtansine plus pertuzumab. Trastuzumab emtansine was administered as 3.6 mg/kg via IV infusion, following completion of the pertuzumab IV infusion, on Day 1 of each 3-week cycle. Pertuzumab was given as 840 mg IV on Day 1 of Cycle 1, then 420 mg IV on Day 1 of each subsequent 3-week cycle. Treatment continued until disease progression, unacceptable toxicity, or study termination. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
Trastuzumab + Taxane
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Reporting group description |
Participants received trastuzumab plus either docetaxel or paclitaxel. The regimen was chosen at the investigator's discretion. Option 1: trastuzumab 8 mg/kg via IV infusion on Day 1 of Cycle 1, then 6 mg/kg IV on Day 1 of each subsequent 3-week cycle; plus a minimum of 6 cycles with docetaxel 75 or 100 mg/m^2 IV on Day 1 of each 3-week cycle. Option 2: trastuzumab 4 mg/kg IV on Day 1 of Cycle 1, then 2 mg/kg IV weekly beginning on Day 8 of Cycle 1; plus a minimum of 18 weeks with paclitaxel 80 mg/m^2 IV weekly. Treatment continued until disease progression, unacceptable toxicity, or study termination. If trastuzumab, docetaxel or paclitaxel were discontinued for toxicity, the other agent could be continued as monotherapy. | ||
Reporting group title |
Trastuzumab Emtansine + Placebo
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Reporting group description |
Participants received trastuzumab emtansine plus pertuzumab-placebo. Trastuzumab emtansine was administered as 3.6 mg/kg via IV infusion, following completion of the placebo IV infusion, on Day 1 of each 3-week cycle. Treatment continued until disease progression, unacceptable toxicity, or study termination. | ||
Reporting group title |
Trastuzumab Emtansine + Pertuzumab
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Reporting group description |
Participants received trastuzumab emtansine plus pertuzumab. Trastuzumab emtansine was administered as 3.6 mg/kg via IV infusion, following completion of the pertuzumab IV infusion, on Day 1 of each 3-week cycle. Pertuzumab was given as 840 mg IV on Day 1 of Cycle 1, then 420 mg IV on Day 1 of each subsequent 3-week cycle. Treatment continued until disease progression, unacceptable toxicity, or study termination. | ||
Subject analysis set title |
Trastuzumab + Taxane - Safety Population
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Subject analysis set type |
Safety analysis | ||
Subject analysis set description |
Safety population for this group included all treated participants; however, 2 participants randomized to this group received 3 cycles of trastuzumab emtansine and were excluded for safety analysis. Hence, safety population for this group=353.
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Subject analysis set title |
Trastuzumab Emtansine + Placebo - Safety Population
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Subject analysis set type |
Safety analysis | ||
Subject analysis set description |
Safety population for this group included all treated participants; however, 2 participants randomized to trastuzumab+taxane received 3 cycles of trastuzumab emtansine and were included in this group for safety analysis. Six participants randomized to this group received pertuzumab and were excluded from this group. Hence, safety population for this group=361.
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Subject analysis set title |
Trastuzumab Emtansine + Pertuzumab - Safety Population
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Subject analysis set type |
Safety analysis | ||
Subject analysis set description |
Safety population for this group included all treated participants; however, 6 participants randomized to trastuzumab emtansine+placebo received pertuzumab and were included in this arm for safety analysis. Hence, safety population for this group=366.
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End point title |
Percentage of Participants with Death or Disease Progression According to Independent Review Facility (IRF) Assessment [1] | ||||||||||||||||
End point description |
Tumor assessments were performed according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1, using radiographic images submitted to the IRF up to and including the confirmatory tumor assessment 4 to 6 weeks after study drug discontinuation. Disease progression was defined as a greater than or equal to (≥) 20 percent (%) and 5-millimeter (mm) increase in sum of diameters of target lesions, taking as reference the smallest sum obtained during the study, or appearance of new lesion(s). The percentage of participants with death or disease progression was calculated as [number of participants with event divided by the number analyzed] multiplied by 100. Analysis was performed on ITT population (all participants randomized in the study).
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End point type |
Primary
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End point timeframe |
Up to 48 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
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Notes [1] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The data for this endpoint is descriptive and hence, no statistical analysis is provided. |
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No statistical analyses for this end point |
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End point title |
Progression-Free Survival (PFS) According to IRF Assessment | ||||||||||||||||
End point description |
Tumor assessments were performed according to RECIST version 1.1, using radiographic images submitted to the IRF up to and including the confirmatory tumor assessment 4 to 6 weeks after study drug discontinuation. PFS was defined as the time from randomization to first documented disease progression as assessed by IRF or death from any cause. Disease progression was defined as a ≥20% and 5-mm increase in sum of diameters of target lesions, taking as reference the smallest sum obtained during the study, or appearance of new lesion(s). Median duration of PFS was estimated using Kaplan-Meier analysis, and corresponding confidence intervals (CIs) were computed using the Brookmeyer-Crowley method. Analysis was performed on ITT population.
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End point type |
Primary
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End point timeframe |
Up to 48 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
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Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
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Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
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Number of subjects included in analysis |
732
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Analysis specification |
Pre-specified
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Analysis type |
non-inferiority [2] | ||||||||||||||||
P-value |
= 0.3125 [3] | ||||||||||||||||
Method |
Logrank | ||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.91
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Confidence interval |
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level |
97.5% | ||||||||||||||||
sides |
2-sided
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lower limit |
0.73 | ||||||||||||||||
upper limit |
1.13 | ||||||||||||||||
Notes [2] - The study was powered for superiority with target hazard ratio (HR) equal to 0.75, as well as for non-inferiority with HR equal to 1.1765 for comparison between each of the trastuzumab emtansine-containing arms and the trastuzumab + taxane arm. Non-inferiority was established if the upper bound of the 97.5% CI was less than (<) 1.1765. Superiority was achieved if the upper bound of the 97.5% CI was <1.00. [3] - Test and p-value apply for superiority test. Two-sided significance level of 2.5% was used to adjust for independent comparison between each of the trastuzumab emtansine-containing arms and the trastuzumab + taxane arm. |
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Statistical analysis title |
Statistical Analysis 2 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
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Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab + Taxane
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Number of subjects included in analysis |
728
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Analysis specification |
Pre-specified
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Analysis type |
non-inferiority [4] | ||||||||||||||||
P-value |
= 0.1407 [5] | ||||||||||||||||
Method |
Logrank | ||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.87
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.69 | ||||||||||||||||
upper limit |
1.08 | ||||||||||||||||
Notes [4] - The study was powered for superiority with target HR equal to 0.75, as well as for non-inferiority with HR equal to 1.1765 for comparison between each of the trastuzumab emtansine-containing arms and the trastuzumab + taxane arm. Non-inferiority was established if the upper bound of the 97.5% CI was <1.1765. Superiority was achieved if the upper bound of the 97.5% CI was <1.00. [5] - Test and p-value apply for superiority test. Two-sided significance level of 2.5% was used to adjust for independent comparison between each of the trastuzumab emtansine-containing arms and the trastuzumab + taxane arm. |
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 3 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent). Formal comparison planned depending on superiority for trastuzumab emtansine + pertuzumab versus trastuzumab + taxane.
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab Emtansine + Placebo
|
||||||||||||||||
Number of subjects included in analysis |
730
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
non-inferiority [6] | ||||||||||||||||
P-value |
= 0.3075 [7] | ||||||||||||||||
Method |
Logrank | ||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.91
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.73 | ||||||||||||||||
upper limit |
1.13 | ||||||||||||||||
Notes [6] - The study was powered for superiority with target HR equal to 0.75, as well as for non-inferiority with HR equal to 1.1765 for comparison between each of the trastuzumab emtansine-containing arms and the trastuzumab + taxane arm. Non-inferiority was established if the upper bound of the 97.5% CI was <1.1765. Superiority was achieved if the upper bound of the 97.5% CI was < 1.00. Formal comparison planned depending on superiority for trastuzumab emtansine + pertuzumab versus trastuzumab + taxane. [7] - Test and p-value apply for superiority test. Primary endpoint did not meet superiority of PFS for trastuzumab emtansine + pertuzumab versus trastuzumab + taxane (two-sided significance level 2.5%); thus, tests and p-value are considered descriptive. |
|
|||||||||||||||||
End point title |
Percentage of Participants Who Died Prior to Clinical Cutoff | ||||||||||||||||
End point description |
The percentage of participants who died prior to clinical cutoff was calculated as [number of participants with event divided by the number analyzed] multiplied by 100. Analysis was performed on ITT population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 50 months from randomization until clinical cutoff of 16-Sept-2014 (every 3 months until death, loss to follow-up, withdrawal, or study termination)
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Overall Survival (OS) at Clinical Cutoff | ||||||||||||||||
End point description |
OS was defined as the time from randomization to death from any cause. Median duration of OS was estimated using Kaplan-Meier analysis, and corresponding CIs were computed using the Brookmeyer-Crowley method. Here, "9999" represents that the value is not applicable because Median duration of OS was not reached due to insufficient followup. Analysis was performed on ITT population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 50 months from randomization until clinical cutoff of 16-Sept-2014 (every 3 months until death, loss to follow-up, withdrawal, or study termination)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
732
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.86
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.64 | ||||||||||||||||
upper limit |
1.16 | ||||||||||||||||
Statistical analysis title |
Statistical analysis 2 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
728
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.82
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.61 | ||||||||||||||||
upper limit |
1.11 |
|
|||||||||||||||||
End point title |
Percentage of Participants with Death or Disease Progression According to Investigator Assessment | ||||||||||||||||
End point description |
Tumor assessments were performed by the investigator according to RECIST version 1.1. Disease progression was defined as a ≥20% and 5-mm increase in sum of diameters of target lesions, taking as reference the smallest sum obtained during the study, or appearance of new lesion(s). The percentage of participants with death or disease progression was calculated as [number of participants with event divided by the number analyzed] multiplied by 100. Analysis was performed on ITT population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 48 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
PFS According to Investigator Assessment | ||||||||||||||||
End point description |
Tumor assessments were performed by the investigator according to RECIST version 1.1. PFS was defined as the time from randomization to progression of disease as assessed by Investigator or death from any cause. Disease progression was defined as a ≥20% and 5-mm increase in sum of diameters of target lesions, taking as reference the smallest sum obtained during the study, or appearance of new lesion(s). Median duration of PFS was estimated using Kaplan-Meier analysis, and corresponding CIs were computed using the Brookmeyer-Crowley method. Analysis was performed on ITT population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 48 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
732
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.85
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.69 | ||||||||||||||||
upper limit |
1.04 | ||||||||||||||||
Statistical analysis title |
Statistical Analysis 2 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
728
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.77
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.63 | ||||||||||||||||
upper limit |
0.95 |
|
|||||||||||||||||
End point title |
Percentage of Participants Experiencing Treatment Failure | ||||||||||||||||
End point description |
Treatment failure was defined as the discontinuation of all study medications in the treatment arm for any reason including disease progression, treatment toxicity, death, physician decision, or participant withdrawal. The percentage of participants with treatment failure was calculated as [number of participants with event divided by the number analyzed] multiplied by 100. Analysis was performed on ITT population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 48 months from randomization until clinical cutoff of 16-Sept-2014
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Time to Treatment Failure (TTF) | ||||||||||||||||
End point description |
Treatment failure was defined as the discontinuation of all study medications in the treatment arm for any reason including disease progression, treatment toxicity, death, physician decision, or participant withdrawal. TTF is the time from randomization to discontinuation of all
agents in the respective treatment arm for any reason, including disease progression, treatment toxicity, death from any cause, or patient/physician decision to discontinue study treatment. Median TTF was estimated using Kaplan-Meier analysis, and corresponding CIs were computed using the Brookmeyer-Crowley method. Analysis was performed on ITT population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 48 months from randomization until clinical cutoff of 16-Sept-2014
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 2 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
728
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.78
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.65 | ||||||||||||||||
upper limit |
0.95 | ||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
732
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.8
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.66 | ||||||||||||||||
upper limit |
0.97 |
|
|||||||||||||||||
End point title |
One-Year Survival Rate | ||||||||||||||||
End point description |
The percentage of participants alive at 1 year after randomization was estimated as the one-year survival rate using Kaplan-Meier analysis, and corresponding CIs were computed using Greenwood's estimate of the standard error. Analysis was performed on ITT population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
From randomization until 1 year
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Percentage of Participants with Grade ≥3 Adverse Events | ||||||||||||||||
End point description |
Adverse events were graded according to National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 4.0. Grade 3: Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care activity of daily living with inability to perform bathing, dressing and undressing, feeding self, using the toilet, taking medications but not bedridden. Grade 4: An immediate threat to life. Urgent medical intervention is required in order to maintain survival. Grade 5: Death. Safety Population: All treated participants. Additionally, 2 participants randomized to trastuzumab+taxane received 3 cycles of trastuzumab emtansine and were included in trastuzumab emtansine+placebo arm. 6 participants randomized to trastuzumab emtansine+placebo received pertuzumab and were included in trastuzumab emtansine+pertuzumab arm.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 50 months from randomization until clinical cutoff of 16-Sept-2014 (continuously until 28 days after last dose
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Percentage of Participants Who Died at 2 Years | ||||||||||||||||
End point description |
Analysis was performed on ITT population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
From randomization until 2 years
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Overall Survival Truncated at 2 Years | ||||||||||||||||
End point description |
Overall Survival truncated at 2 years was defined as the time from the date of randomization to the date of death from any cause. Participants who were alive at 2 years had been censored at 2 years. Median duration of overall survival truncated at 2 years was estimated using Kaplan-Meier analyses, and corresponding CIs were computed using the Brookmeyer-Crowley method. Here, "9999" represents that data was not applicable because median was not reached at 2 years as most of the participants were alive at that time point. Analysis was performed on ITT population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
From randomization until 2 years
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
732
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.91
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.62 | ||||||||||||||||
upper limit |
1.31 | ||||||||||||||||
Statistical analysis title |
Statistical Analysis 2 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
728
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.88
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.6 | ||||||||||||||||
upper limit |
1.29 | ||||||||||||||||
Statistical analysis title |
Statistical Analysis 3 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab Emtansine + Placebo
|
||||||||||||||||
Number of subjects included in analysis |
730
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
1
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.68 | ||||||||||||||||
upper limit |
1.46 |
|
|||||||||||||||||
End point title |
Percentage of Participants with Grade 5 Adverse Events | ||||||||||||||||
End point description |
Adverse events were graded according to NCI CTCAE version 4.0. Grade 5 adverse events are those events which led to death.Analysis was performed on safety population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 50 months from randomization until clinical cutoff of 16-Sept-2014 (continuously until 28 days after last dose
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point title |
Percentage of Participants with Grade 3-4 Laboratory Parameters | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point description |
Laboratory results were graded according to NCI CTCAE version 4.0. Grade 3: Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care activity of daily living with inability to perform bathing, dressing and undressing, feeding self, using the toilet, taking medications but not bedridden. Grade 4: An immediate threat to life. Urgent medical intervention is required in order to maintain survival. Analysis was performed on safety population. Number of participants analyzed=participants with available data for the outcome.
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point timeframe |
Day 1, 8, and 15 of Cycle 1–3 and on Day 1 of each subsequent cycle up to 50 months from randomization until clinical cutoff of 16-Sept-2014
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Percentage of Participants with Decline of ≥2 points from Baseline in Eastern Cooperative Oncology Group (ECOG) Performance Status | ||||||||||||||||
End point description |
The ECOG performance status is a scale used to quantify cancer participants' general well-being and activities of daily life. The scale ranges from 0 to 5, with 0 denoting perfect health and 5 indicating death. The 6 categories are 0=Asymptomatic (Fully active, able to carry on all predisease activities without restriction), 1=Symptomatic but completely ambulatory (Restricted in physically strenuous activity but ambulatory and able to carry out work of a light or sedentary nature), 2=Symptomatic, < 50% in bed during the day (Ambulatory and capable of all self-care but unable to carry out any work activities. Up and about more than 50% of waking hours), 3=Symptomatic, > 50% in bed, but not bedbound (Capable of only limited self-care, confined to bed or chair 50% or more of waking hours), 4=Bedbound (Completely disabled. Cannot carry on any self-care. Totally confined to bed or chair), 5=Death. Analysis was performed on safety population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Baseline, Day 1 of every Cycle up to Clinical Data Cut (up to 48 months)
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Hospitalization Days | ||||||||||||||||
End point description |
Hospitalization was defined as a non-administration-related hospitalization due to serious adverse event, while on study treatment. Reported values represent number of days admitted per participants. Analysis was performed on safety population .Number of participants analyzed=participants with hospitalization and data available for calculation of the parameter.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 48 months from randomization until clinical cutoff of 16-Sept-2014
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Percentage of participants with Hospitalization | ||||||||||||||||
End point description |
Hospitalization was defined as a non-administration-related hospitalization due to serious adverse event, while on study treatment. Analysis was performed on safety population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 48 months from randomization until clinical cutoff of 16-Sept-2014
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Percentage of Participants with Objective Response According to IRF Assessment | ||||||||||||||||
End point description |
Objective response was defined as having complete response (CR) or partial response (PR), assessed according to RECIST version 1.1, using radiographic images submitted to IRF up to and including the confirmatory tumor assessment 4 to 6 weeks after study drug discontinuation. CR: disappearance of all target and non-target lesions and short-axis reduction in pathological lymph nodes to <10 mm. PR: a ≥30% decrease in sum of diameters of target lesions, taking as reference the Baseline sum. Response was determined using 2 consecutive tumor assessments at least 4 weeks apart. The percentage of participants with a best overall response of CR or PR (ie, the objective response rate [ORR]) was calculated as [number of participants meeting the respective criteria divided by the number analyzed] multiplied by 100. Corresponding CIs were computed using the Blyth-Still-Casella exact method. ITT population. Only participants with measurable disease by IRF at Baseline were included.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 46 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
590
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Difference in Response Rate | ||||||||||||||||
Point estimate |
-8.2
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
-15.9 | ||||||||||||||||
upper limit |
-0.5 | ||||||||||||||||
Statistical analysis title |
Statistical Analysis 2 | ||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
586
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Difference in Response Rate | ||||||||||||||||
Point estimate |
-3.7
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
-11.4 | ||||||||||||||||
upper limit |
3.9 | ||||||||||||||||
Statistical analysis title |
Statistical Analysis 3 | ||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab Emtansine + Placebo
|
||||||||||||||||
Number of subjects included in analysis |
602
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Difference in Response Rate | ||||||||||||||||
Point estimate |
4.5
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
-3.3 | ||||||||||||||||
upper limit |
12.2 |
|
|||||||||||||||||
End point title |
Percentage of Participants with Objective Response According to Investigator Assessment | ||||||||||||||||
End point description |
Objective response was defined as having CR or PR, assessed according to RECIST version 1.1, by investigator. CR was defined as the disappearance of all target and non-target lesions and short-axis reduction in pathological lymph nodes to <10 mm. PR was defined as a ≥30% decrease in sum of diameters of target lesions, taking as reference the Baseline sum. Response was determined using 2 consecutive tumor assessments at least 4 weeks apart. The percentage of participants with a best overall response of CR or PR (ie, the ORR) was calculated as [number of participants meeting the respective criteria divided by the number analyzed] multiplied by 100. Corresponding CIs were computed using the Blyth-Still-Casella exact method. Only participants with measurable disease by Investigator at Baseline were included in the analysis. Analysis was performed on ITT population.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 46 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
607
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Difference in Response Rate | ||||||||||||||||
Point estimate |
-4.6
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
-12.1 | ||||||||||||||||
upper limit |
2.8 | ||||||||||||||||
Statistical analysis title |
Statistical Analysis 2 | ||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
604
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Difference in Response Rate | ||||||||||||||||
Point estimate |
-1.8
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
-9.2 | ||||||||||||||||
upper limit |
5.7 | ||||||||||||||||
Statistical analysis title |
Statistical Analysis 3 | ||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab Emtansine + Placebo
|
||||||||||||||||
Number of subjects included in analysis |
625
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Difference in Response Rate | ||||||||||||||||
Point estimate |
2.9
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
-4.5 | ||||||||||||||||
upper limit |
10.3 |
|
|||||||||||||||||
End point title |
Duration of Response According to IRF Assessment | ||||||||||||||||
End point description |
Tumor assessments were performed according to RECIST version 1.1, using radiographic images submitted to the IRF up to and including the confirmatory tumor assessment 4 to 6 weeks after study drug discontinuation. Duration of response was defined as the time from confirmed PR or CR to first documented disease progression or death from any cause. CR was defined as the disappearance of all target lesions and non-target lesions and short-axis reduction in pathological lymph nodes to <10 mm. PR was defined as a ≥30% decrease in sum of diameters of target lesions, taking as reference the Baseline sum. Response was determined using 2 consecutive tumor assessments at least 4 weeks apart. Median duration of response was estimated using Kaplan-Meier analysis, and corresponding CIs were computed using the Brookmeyer-Crowley method. Analysis was performed on ITT population. Only participants achieving CR or PR were included in the analysis.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 46 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
376
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.6
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.43 | ||||||||||||||||
upper limit |
0.84 | ||||||||||||||||
Statistical analysis title |
Statistical Analysis 2 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
387
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.62
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.45 | ||||||||||||||||
upper limit |
0.85 |
|
|||||||||||||||||
End point title |
Percentage of Participants with a Best Overall Response of CR, PR, or Stable Disease (SD) According to IRF Assessment | ||||||||||||||||
End point description |
Tumor assessments were performed according to RECIST version 1.1, using radiographic images submitted to the IRF up to and including the confirmatory tumor assessment 4 to 6 weeks after study drug discontinuation. CR was defined as the disappearance of all target and non-target lesions and short-axis reduction in pathological lymph nodes to <10 mm. PR was defined as a ≥30% decrease in sum of diameters of target lesions, taking as reference the Baseline sum. SD was defined as neither sufficient shrinkage to quality for PR nor sufficient (20%) increase to qualify for disease progression. Response was determined using 2 consecutive tumor assessments at least 4 weeks apart. The percentage of participants with a best overall response of CR, PR, or SD was calculated as [number of participants meeting the respective criteria divided by the number analyzed] multiplied by 100.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 46 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
Notes [8] - This outcome was removed because it was redundant to another prespecified secondary endpoint. [9] - This outcome was removed because it was redundant to another prespecified secondary endpoint. [10] - This outcome was removed because it was redundant to another prespecified secondary endpoint. |
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Percentage of Participants Experiencing a Clinically Significant Increase in Taxane-Related Treatment Symptoms as Measured by Taxane Subscale of the Functional Assessment of Cancer Therapy (FACT) Taxane (FACT-TaxS) Score | ||||||||||||||||
End point description |
The FACT-Taxane is a self-reported instrument which measures health-related quality of life (HRQOL) of participants receiving taxane-containing chemotherapy. FACT-TaxS consists of 16 items (11 neurotoxicity-related questions and 5 additional questions assessing arthralgia, myalgia, and skin discoloration). Items are rated from 0 (not at all) to 4 (very much) and total score is inversely derived. Scores may range from 0 to 64, with higher scores indicating fewer/no symptoms. A minimally clinically important difference in treatment-related symptoms was defined as ≥5% decrease (ie, 3.2 points) in FACT-TaxS score from Baseline. Percentage of participants with treatment-related symptoms was calculated using following formula: [participants meeting above threshold divided by the number analyzed] multiplied by 100. Corresponding CIs were computed using the Blyth-Still-Casella exact method. Protocol Amendment C Subpopulation: All randomized participants who entered after Protocol Amendment C.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 39 months from randomization until clinical cutoff of 16-Sept-2014 (at Baseline, on Day 1 of Cycles 2 to 8 and every even-numbered cycle thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
344
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Difference in % vs Tratuzumab + Taxane | ||||||||||||||||
Point estimate |
-32.2
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
-40 | ||||||||||||||||
upper limit |
-24 | ||||||||||||||||
Statistical analysis title |
Statistical Analysis 2 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
327
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Difference in % vs Tratuzumab + Taxane | ||||||||||||||||
Point estimate |
-24.2
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
-32 | ||||||||||||||||
upper limit |
-16 | ||||||||||||||||
Statistical analysis title |
Statistical Analysis 3 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab Emtansine + Placebo
|
||||||||||||||||
Number of subjects included in analysis |
325
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Difference in % vs TDM-1+Placebo | ||||||||||||||||
Point estimate |
8
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
-2.3 | ||||||||||||||||
upper limit |
18.4 |
|
|||||||||||||||||||||||||||||||||
End point title |
Percentage of Participants Reporting Nausea According to Item GP2 of The FACT Colorectal Cancel (FACT-C) Module | ||||||||||||||||||||||||||||||||
End point description |
The FACT-C is a self-reported instrument which measures HRQOL pertaining to colorectal cancer. Response options on each question may range from 0 (not at all) to 4 (very much). The percentage of participants with nausea was calculated using following formula: [number of participants with any level of either symptom divided by the number analyzed] multiplied by 100. Protocol Amendment C Subpopulation. Only participants with a FACT-C score at the designated visit (n) were included in the analysis.
|
||||||||||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||||||||||
End point timeframe |
At Baseline, Day 8 of Cycle 1, and Days 1 and 8 of Cycle 2
|
||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||||||||||||||||||
End point title |
Percentage of Participants Reporting Diarrhea According to Single Item C5 of The FACT-C Module | ||||||||||||||||||||||||||||||||
End point description |
The FACT-C is a self-reported instrument which measures HRQOL pertaining to colorectal cancer. Response options on each question may range from 0 (not at all) to 4 (very much). The percentage of participants with diarrhea was calculated using following formula: [number of participants with any level of either symptom divided by the number analyzed] multiplied by 100. Protocol Amendment C Subpopulation. Only participants with a FACT-C score at the designated visit (n) were included in the analysis.
|
||||||||||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||||||||||
End point timeframe |
At Baseline, Day 8 of Cycle 1, and Days 1 and 8 of Cycle 2
|
||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Percentage of Participants with a Clinically Significant Deterioration in Health Related Quality of Life (HRQoL) as measured by FACT Breast (FACT-B) Trial Outcome Index-Physical Function Breast (TOI-PFB) Score | ||||||||||||||||
End point description |
The FACT-B is self-reported instrument which measures HRQOL of participants with breast cancer. It consists of 5 subscales including physical well-being (PWB), social well-being (SWB), emotional well-being (EWB), functional well-being (FWB), and a breast cancer subscale (BCS). The TOI-PFB score is taken by adding the scores from the PWB (7 items), FWB (7 items), and BCS (9 items) subscales. Items are rated from 0 (not at all) to 4 (very much) and total score is derived. Scores may range from 0 to 92, with higher scores indicating better HRQOL. A 5 point change has been identified as the clinically minimal important difference (CMID) on the FACT-TOI-PFB scale. The percentage of participants with deterioration was calculated as [number of participants meeting above threshold divided by the number analyzed] multiplied by 100. Analysis was performed on ITT Population. Number of participants analyzed=participants with baseline and at least 1 post baseline FACT-B TOI-PFB score.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 39 months from randomization until progression or clinical cutoff of 16-Sept-2014 (Pre amendment C: every 9 weeks for 1st 81 weeks, every 12 weeks thereafter; post amendment C: 1st day of every cycle for first 8 cycles, every other cycle thereafter)
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Time to Deterioration in HRQoL as Assessed by FACT-B TOI-PFB Score | ||||||||||||||||
End point description |
The FACT-B is a self-reported instrument which measures HRQOL of participants with breast cancer. It consists of 5 subscales including PWB, SWB, EWB, FWB, and BCS. The TOI-PFB score is taken by adding the scores from the PWB (7 items), FWB (7 items), and BCS (9 items) subscales. Items are rated from 0 (not at all) to 4 (very much) and a total score is derived. Scores may range from 0 to 92, with higher scores indicating better HRQOL. A 5 point change has been identified as the clinically minimal important difference (CMID) on the FACT-TOI-PFB scale. Time to deterioration was defined as the time from Baseline until the first decrease in FACT-B TOI-PFB score. Median time to deterioration was estimated using Kaplan-Meier analysis, and corresponding CIs were computed using the Brookmeyer-Crowley method. Analysis was performed on ITT Population. Number of participants analyzed=participants with baseline and at least one post baseline FACT-B
TOI-PFB score.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 39 months from randomization until progression or clinical cutoff of 16-Sept-2014 (Pre amendment C: every 9 weeks for 1st 81 weeks, every 12 weeks thereafter; post amendment C: 1st day of every cycle for first 8 cycles, every other cycle thereafter)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
679
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.7
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.57 | ||||||||||||||||
upper limit |
0.86 | ||||||||||||||||
Statistical analysis title |
Statistical Analysis 2 | ||||||||||||||||
Statistical analysis description |
Stratified Analysis: Stratification factors included world region (United States, Western Europe/Canada/Australia-Pacific, Eastern Europe, Asia, others); prior adjuvant/neoadjuvant therapy (no, yes [trastuzumab and/or lapatinib], yes [no trastuzumab and/or lapatinib]), and visceral disease (present, absent).
|
||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Pertuzumab v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
665
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.68
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.55 | ||||||||||||||||
upper limit |
0.84 |
|
|||||||||||||||||||||||||
End point title |
Change from Baseline in Rotterdam Symptom Checklist (RSCL) Activity Level Scale Score | ||||||||||||||||||||||||
End point description |
The RSCL is a self-reported instrument which consists of 4 domains including physical symptom distress, psychological distress, activity level, and overall global life quality. Only the activity level scale was collected and assessed. Scores may range from 0 to 100, with higher scores indicating increased burden of disease. Mean RSCL activity scale score changes were calculated as [mean score at the assessment visit minus mean score at Baseline]. The higher the score, the higher the level of impairment or burden. Analysis was performed on ITT Population. Here, 'n' signifies the number of participants with available data at baseline and Cycle 7 (Week 18).
|
||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||
End point timeframe |
Baseline, Cycle 7 (Week 18)
|
||||||||||||||||||||||||
|
|||||||||||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||||||||||||||||||||||||||
End point title |
Change From Baseline in Work Productivity According to Work Productivity and Activity Impairment (WPAI) Questionnaire Score | ||||||||||||||||||||||||||||||||||||||||
End point description |
The WPAI is patient-reported measure which assesses the effect of general health and symptom severity on work productivity and regular activities. The General Health questionnaire asks participants to estimate number of hours missed from work due to reasons related and unrelated to their health problems, as well as total number of hours actually worked in preceding 7-day period. Percentage of participants reporting that they were employed (working for pay) was assessed at baseline along with Absenteeism (work time missed), Presenteeism (impairment at work/reduced on-job effectiveness), Work productivity loss (overall work impairment/absenteeism plus presenteeism), and Activity Impairment. Reported changes represent change from baseline at Cycle 7. The score range for scales of the WPAI is 0 (no effect) to 100% (max effect). Number of participants analysed=participants from ITT population who were employed at baseline. Here, 'n' signifies the number of participants with available data.
|
||||||||||||||||||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||||||||||||||||||
End point timeframe |
Baseline, Cycle 7 (Week 18)
|
||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||||||||||
End point title |
Change From Baseline in Activity Impairment According to Work Productivity and Activity Impairment (WPAI) Questionnaire Score | ||||||||||||||||||||||||
End point description |
The WPAI is patient-reported measure which assesses effect of general health and symptom severity on work productivity and regular activities. The General Health questionnaire asks participants to estimate number of hours missed from work due to reasons related and unrelated to their health problems, as well as total number of hours actually worked in preceding 7-day period. Percentage of participants reporting that they were employed (working for pay) was assessed at baseline along with Absenteeism (work time missed), Presenteeism (impairment at work/reduced on-the-job effectiveness), Work productivity loss (overall work mpairment/absenteeism plus presenteeism), and Activity Impairment. Reported changes represent change from baseline at Cycle 7. The score range for the scales of WPAI is 0 (no effect) to 100% (max effect). Number of participants analysed=participants from ITT population who were employed at baseline. Here, 'n' signifies the number of participants with available data.
|
||||||||||||||||||||||||
End point type |
Secondary
|
||||||||||||||||||||||||
End point timeframe |
Baseline, Cycle 7 (Week 18)
|
||||||||||||||||||||||||
|
|||||||||||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
Percentage of Participants with a Best Overall Response of CR or PR According to IRF Assessment Among Those with High Human Epidermal Growth Factor Receptor 2 (HER2) Messenger Ribonucleic Acid (mRNA) Levels | ||||||||||||||||
End point description |
Tumor assessments were performed according to RECIST version 1.1, using radiographic images submitted to the IRF up to and including the confirmatory tumor assessment 4 to 6 weeks after study drug discontinuation. CR was defined as the disappearance of all target and non-target lesions and short-axis reduction in pathological lymph nodes to <10 mm. PR was defined as a ≥30% decrease in sum of diameters of target lesions, taking as reference the Baseline sum. Response was determined using 2 consecutive tumor assessments at least 4 weeks apart. The percentage of participants with a best overall response of CR or PR (ie, the ORR) was calculated as [number of participants meeting the respective criteria divided by the number analyzed] multiplied by 100. ITT Population (High HER2 mRNA Subpopulation): All randomized participants with above the median HER2 mRNA expression (value greater than [>] 59.71). Only participants with measurable disease at Baseline were included in the analysis.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 46 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
268
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Odds ratio (OR) | ||||||||||||||||
Point estimate |
0.67
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.4 | ||||||||||||||||
upper limit |
1.15 |
|
|||||||||||||||||
End point title |
Percentage of Participants with a Best Overall Response of CR or PR According to IRF Assessment Among Those with Low HER2 mRNA Levels | ||||||||||||||||
End point description |
Tumor assessments were performed according to RECIST version 1.1, using radiographic images submitted to IRF up to and including the confirmatory tumor assessment 4 to 6 weeks after study drug discontinuation. CR was defined as the disappearance of all target and non-target lesions and short-axis reduction in pathological lymph nodes to <10 mm. PR was defined as a ≥30% decrease in sum of diameters of target lesions, taking as reference the Baseline sum. Response was determined using 2 consecutive tumor assessments at least 4 weeks apart. The percentage of participants with a best overall response of CR or PR (ie, the ORR) was calculated as [number of participants meeting the respective criteria divided by the number analyzed] multiplied by 100. ITT Population (Low HER2 mRNA Subpopulation): All randomized participants with below-the-median HER2 mRNA expression (value less than or equal to [≤] 59.71). Only participants with measurable disease at Baseline were included in the analysis.
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 46 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
273
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Odds ratio (OR) | ||||||||||||||||
Point estimate |
0.66
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
95% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.41 | ||||||||||||||||
upper limit |
1.07 |
|
|||||||||||||||||
End point title |
Percentage of Participants with Death or Disease Progression According to IRF Assessment Among Those with High HER2 mRNA Levels | ||||||||||||||||
End point description |
Tumor assessments were performed according to RECIST version 1.1, using radiographic images submitted to the IRF up to and including the confirmatory tumor assessment 4 to 6 weeks after study drug discontinuation. Disease progression was defined as a ≥20% and 5-mm increase in sum of diameters of target lesions, taking as reference the smallest sum obtained during the study, or appearance of new lesion(s). The percentage of participants with death or disease progression was calculated as [number of participants with event divided by the number analyzed] multiplied by 100. Analysis was performed on ITT Population (High HER2 mRNA Subpopulation).
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 48 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
PFS According to IRF Assessment Among Those with High HER2 mRNA Levels | ||||||||||||||||
End point description |
Tumor assessments were performed according to RECIST version 1.1, using radiographic images submitted to the IRF up to and including the confirmatory tumor assessment 4 to 6 weeks after study drug discontinuation. PFS was defined as the time from randomization to first documented disease progression or death from any cause. Disease progression was defined as a ≥20% and 5-mm increase in sum of diameters of target lesions, taking as reference the smallest sum obtained during the study, or appearance of new lesion(s). Median duration of PFS was estimated using Kaplan-Meier analysis. Analysis was performed on ITT Population (High HER2 mRNA Subpopulation).
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 48 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
325
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.9
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.65 | ||||||||||||||||
upper limit |
1.25 |
|
|||||||||||||||||
End point title |
Percentage of Participants with Death or Disease Progression According to IRF Assessment Among Those with Low HER2 mRNA Levels | ||||||||||||||||
End point description |
Tumor assessments were performed according to RECIST version 1.1, using radiographic images submitted to the IRF up to and including the confirmatory tumor assessment 4 to 6 weeks after study drug discontinuation. Disease progression was defined as a ≥20% and 5-mm increase in sum of diameters of target lesions, taking as reference the smallest sum obtained during the study, or appearance of new lesion(s). The percentage of participants with death or disease progression was calculated as [number of participants with event divided by the number analyzed] multiplied by 100. Analysis was performed on ITT Population (Low HER2 mRNA Subpopulation).
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 48 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
PFS According to IRF Assessment Among Those with Low HER2 mRNA Levels | ||||||||||||||||
End point description |
Tumor assessments were performed according to RECIST version 1.1, using radiographic images submitted to the IRF up to and including the confirmatory tumor assessment 4 to 6 weeks after study drug discontinuation. PFS was defined as the time from randomization to first documented disease progression or death from any cause. Disease progression was defined as a ≥20% and 5-mm increase in sum of diameters of target lesions, taking as reference the smallest sum obtained during the study, or appearance of new lesion(s). Median duration of PFS was estimated using Kaplan-Meier analysis. Analysis was performed on ITT Population (Low HER2 mRNA Subpopulation).
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 48 months from randomization until clinical cutoff of 16-Sept-2014 (at Screening, every 9 weeks for 81 weeks, then every 12 weeks thereafter and/or up to 42 days after last dose)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
344
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
1
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.74 | ||||||||||||||||
upper limit |
1.34 |
|
|||||||||||||||||
End point title |
Percentage of Participants Who Died Prior to Clinical Cutoff Among Those with High HER2 mRNA Levels | ||||||||||||||||
End point description |
The percentage of participants who died prior to clinical cutoff was calculated as [number of participants with event divided by the number analyzed] multiplied by 100. Analysis was performed on ITT Population (High HER2 mRNA Subpopulation).
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 50 months from randomization until clinical cutoff of 16-Sept-2014 (every 3 months until death, loss to follow-up, withdrawal, or study termination)
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
OS at Clinical Cutoff Among Those with High HER2 mRNA Levels | ||||||||||||||||
End point description |
OS was defined as the time from randomization to death from any cause. Median duration of OS was estimated using Kaplan-Meier analysis. Here, 9.99 represents data not applicable because median duration of OS was not reached due to insufficient follow up. Confidence interval values are censored values. Analysis was performed on ITT Population (High HER2 mRNA Subpopulation).
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 50 months from randomization until clinical cutoff of 16-Sept-2014 (every 3 months until death, loss to follow-up, withdrawal, or study termination)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
325
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.95
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.59 | ||||||||||||||||
upper limit |
1.51 |
|
|||||||||||||||||
End point title |
Percentage of Participants Who Died Prior to Clinical Cutoff Among Those with Low HER2 mRNA Levels | ||||||||||||||||
End point description |
The percentage of participants who died prior to clinical cutoff was calculated as [number of participants with event divided by the number analyzed] multiplied by 100. Analysis was performed on ITT Population (Low HER2 mRNA Subpopulation).
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 50 months from randomization until clinical cutoff of 16-Sept-2014 (every 3 months until death, loss to follow-up, withdrawal, or study termination)
|
||||||||||||||||
|
|||||||||||||||||
No statistical analyses for this end point |
|
|||||||||||||||||
End point title |
OS at Clinical Cutoff Among Those with Low HER2 mRNA Levels | ||||||||||||||||
End point description |
OS was defined as the time from randomization to death from any cause. Median duration of OS was estimated using Kaplan-Meier analysis. Here, "9.99" represents that data is not applicable because median duration of OS was not reached due to insufficient followup. Reported upper bound of confidence interval for "Trastuzumab Emtansine + Placebo" and confidence interval values for "Trastuzumab + Taxane" and "Trastuzumab Emtansine + Pertuzumab" are censored values. Analysis was performed on ITT Population (Low HER2 mRNA Subpopulation).
|
||||||||||||||||
End point type |
Secondary
|
||||||||||||||||
End point timeframe |
Up to 50 months from randomization until clinical cutoff of 16-Sept-2014 (every 3 months until death, loss to follow-up, withdrawal, or study termination)
|
||||||||||||||||
|
|||||||||||||||||
Statistical analysis title |
Statistical Analysis 1 | ||||||||||||||||
Comparison groups |
Trastuzumab Emtansine + Placebo v Trastuzumab + Taxane
|
||||||||||||||||
Number of subjects included in analysis |
344
|
||||||||||||||||
Analysis specification |
Pre-specified
|
||||||||||||||||
Analysis type |
other | ||||||||||||||||
Method |
|||||||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||||||
Point estimate |
0.85
|
||||||||||||||||
Confidence interval |
|||||||||||||||||
level |
97.5% | ||||||||||||||||
sides |
2-sided
|
||||||||||||||||
lower limit |
0.57 | ||||||||||||||||
upper limit |
1.27 |
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Adverse events information
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Timeframe for reporting adverse events |
Up to 50 months from randomization until clinical cutoff of 16-Sept-2014 (continuously until 28 days after last dose)
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Adverse event reporting additional description |
Safety Population: All randomized participants who received at least one dose of study treatment.
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Assessment type |
Non-systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
17.1
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Reporting groups
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Reporting group title |
Trastuzumab + Taxane
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Reporting group description |
Participants received trastuzumab plus either docetaxel or paclitaxel. The regimen was chosen at the investigator's discretion. Option 1: trastuzumab 8 mg/kg via IV infusion on Day 1 of Cycle 1, then 6 mg/kg IV on Day 1 of each subsequent 3-week cycle; plus a minimum of 6 cycles with docetaxel 75 or 100 mg/m^2 IV on Day 1 of each 3-week cycle. Option 2: trastuzumab 4 mg/kg IV on Day 1 of Cycle 1, then 2 mg/kg IV weekly beginning on Day 8 of Cycle 1; plus a minimum of 18 weeks with paclitaxel 80 mg/m^2 IV weekly. Treatment continued until disease progression, unacceptable toxicity, or study termination. If trastuzumab or docetaxel were discontinued for toxicity, the other agent could be continued as monotherapy. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Trastuzumab Emtansine + Pertuzumab
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Reporting group description |
Participants received trastuzumab emtansine plus pertuzumab. Trastuzumab emtansine was administered as 3.6 mg/kg via IV infusion, following completion of the pertuzumab IV infusion, on Day 1 of each 3-week cycle. Pertuzumab was given as 840 mg IV on Day 1 of Cycle 1, then 420 mg IV on Day 1 of each subsequent 3-week cycle. Treatment continued until disease progression, unacceptable toxicity, or study termination. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Trastuzumab Emtansine + Placebo
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Reporting group description |
Participants received trastuzumab emtansine plus pertuzumab-placebo. Trastuzumab emtansine was administered as 3.6 mg/kg via IV infusion, following completion of the placebo IV infusion, on Day 1 of each 3-week cycle. Treatment continued until disease progression, unacceptable toxicity, or study termination. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Frequency threshold for reporting non-serious adverse events: 5% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Substantial protocol amendments (globally) |
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Were there any global substantial amendments to the protocol? Yes | |||
Date |
Amendment |
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07 Mar 2011 |
Updates to the protocol included truncation of OS at 2 years as a secondary endpoint, addition of several quality of life assessments including FACT instruments, changes in the assessment schedule, clarification of the study population and eligibility criteria, and addition of treatment guidelines for cases of study drug discontinuation. |
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11 Oct 2011 |
The protocol was amended to remove an interim futility analysis and to specify the new nonproprietary name 'trastuzumab emtansine' (formerly T-DM1). |
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29 May 2013 |
The protocol was revised in order to allow for formal comparison of both trastuzumab emtansine arms, specify statistical assumptions, evaluate OS within high and low HER2 mRNA subsets, remove the clinical benefit rate (CR/PR/SD) as a redundant secondary endpoint, clarify committee procedures, further update the schedule of assessments, and add the option for participants to cross over to the best treatment arm if OS was more favorable in one of the trastuzumab emtansine arms. |
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01 Nov 2013 |
The protocol was modified to add safety guidance on hepatotoxicity, including updated language for hemorrhage and Hy's Law. |
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Interruptions (globally) |
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Were there any global interruptions to the trial? No | |||
Limitations and caveats |
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Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data. | |||
None reported |