Clinical Trial Results:
Preoperative combined radiochemotherapy for patients with newly diagnosed, primary operable and locally advanced rectal carcinoma (cT3, Nx, M0) of the lower and middle rectum
Summary
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EudraCT number |
2004-002358-72 |
Trial protocol |
AT |
Global end of trial date |
19 Dec 2013
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Results information
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Results version number |
v2(current) |
This version publication date |
23 Oct 2021
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First version publication date |
10 Sep 2021
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Other versions |
v1 |
Version creation reason |
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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 |
ABCSG R02 (95)/TAKO 05
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT00297141 | ||
WHO universal trial number (UTN) |
- | ||
Other trial identifiers |
Roche: ML18560 | ||
Sponsors
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Sponsor organisation name |
ABCSG (Austrian Breast & Colorectal Cancer Study Group)
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Sponsor organisation address |
Nußdorfer Platz 8/12, Vienna, Austria, 1190
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Public contact |
Hannes Fohler (Trial Office Director), ABCSG (Austrian Breast & Colorectal Cancer Study Group), +43 14089230, info@abcsg.at
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Scientific contact |
Prof. Dietmar Oefner-Velano, ABCSG (Austrian Breast & Colorectal Cancer Study Group), +43 14089230, info@abcsg.at
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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 |
Final
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Date of interim/final analysis |
19 Dec 2013
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Is this the analysis of the primary completion data? |
No
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Global end of trial reached? |
Yes
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Global end of trial date |
19 Dec 2013
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Was the trial ended prematurely? |
No
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General information about the trial
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Main objective of the trial |
Rate of T-downstaging (Reduction of the T-stadium) at the time of final surgery following the preoperative combined radiochemotherapy (chemotherapy: Oxaliplatin, Capecitabine)
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Protection of trial subjects |
A Data Monitoring Committee (DMC) was established to obtain Patient Safety. The responsibility of the DMC was to evaluate deviations of medical relevance and safety issues. The DMC decided on whether or not the patient should continue the study treatment due to safety issues. Major protocol deviations include all deviations endangering the basal medical concept of the study jeopardizing the safety of the patient. Minor protocol deviations include all other protocol deviations.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
06 Dec 2004
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Long term follow-up planned |
Yes
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Long term follow-up rationale |
Efficacy | ||
Long term follow-up duration |
7 Years | ||
Independent data monitoring committee (IDMC) involvement? |
No
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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 |
Austria: 60
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Worldwide total number of subjects |
60
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EEA total number of subjects |
60
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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) |
38
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From 65 to 84 years |
22
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85 years and over |
0
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Recruitment
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Recruitment details |
A total of 8 trial sites participated and had the possibility to recruit patients in this trial in Austria. A total of 60 patients were enrolled between Dec 2004 and Dec 2005. | ||||||||||||
Pre-assignment
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Screening details |
Time period of max. 21 days for screening (from diagnosis to therapy start) in which inclusion and exclusion criteria were assessed and clinical laboratory tests were performed. | ||||||||||||
Pre-assignment period milestones
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Number of subjects started |
60 | ||||||||||||
Number of subjects completed |
60 | ||||||||||||
Period 1
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Period 1 title |
overall trial (overall period)
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Is this the baseline period? |
Yes | ||||||||||||
Allocation method |
Not applicable
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Blinding used |
Not blinded | ||||||||||||
Arms
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Arm title
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Combined radio chemotherapy | ||||||||||||
Arm description |
Preoperative Chemoradiation with therapy start within 21 days after MRI. Radiotherapy: 5 x 5 days 1.8 Gy; total dose 45 Gy; Chemotherapy: Capecitabine 825mg/m² bid, on radiotherapy days (week 1-4), Oxaliplatin 50mg/m² iv., d 1, 8, 15, 22. | ||||||||||||
Arm type |
Experimental | ||||||||||||
Investigational medicinal product name |
Xeloda
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Investigational medicinal product code |
RO 09-1978
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Other name |
Capecitabine
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Pharmaceutical forms |
Film-coated tablet
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Routes of administration |
Oral use
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Dosage and administration details |
825 mg/m2/bid, on radiotherapy days (week 1-4)
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Investigational medicinal product name |
Eloxatin
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Investigational medicinal product code |
SR 96669
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Other name |
Oxaliplatin
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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 |
50mg/m2 BSA per day (d1, d8, d15, d22)
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Baseline characteristics reporting groups
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Reporting group title |
overall trial
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Reporting group description |
- | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Subject analysis sets
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Subject analysis set title |
ITT
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Subject analysis set type |
Intention-to-treat | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Subject analysis set description |
The intent-to-treat population (ITT) consisted of all patients who received at least one dose of study medication. All efficacy and safety analyses were performed on this population.
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Subject analysis set title |
Survival
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Subject analysis set type |
Intention-to-treat | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Subject analysis set description |
The survival population consisted of all ITT patients with available long-term follow-up. All survival analyses were performed on this population.
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End points reporting groups
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Reporting group title |
Combined radio chemotherapy
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Reporting group description |
Preoperative Chemoradiation with therapy start within 21 days after MRI. Radiotherapy: 5 x 5 days 1.8 Gy; total dose 45 Gy; Chemotherapy: Capecitabine 825mg/m² bid, on radiotherapy days (week 1-4), Oxaliplatin 50mg/m² iv., d 1, 8, 15, 22. | ||
Subject analysis set title |
ITT
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Subject analysis set type |
Intention-to-treat | ||
Subject analysis set description |
The intent-to-treat population (ITT) consisted of all patients who received at least one dose of study medication. All efficacy and safety analyses were performed on this population.
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Subject analysis set title |
Survival
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Subject analysis set type |
Intention-to-treat | ||
Subject analysis set description |
The survival population consisted of all ITT patients with available long-term follow-up. All survival analyses were performed on this population.
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End point title |
Tumor down-categorization [1] | ||||||
End point description |
The primary efficacy variable was the rate of tumor down-categorization (defined as a decrease of ≥ 1 point(s)) at the T level. The extent of residual tumor in the resected specimen was classified according to the TNM staging system of the American Joint Committee on Cancer/International Union Against Cancer (AJCC/UICC). In case of a complete pathological response (pCR; i.e., ypT0ypN0M0), an independent pathologist re-evaluated the tumor tissue. All efficacy parameters were analyzed descriptively.
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End point type |
Primary
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End point timeframe |
At the time of final surgery following the preoperative combined radio chemotherapy (chemotherapy: Oxaliplatin, Capecitabine).
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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: Single arm study based on descriptive analysis only. |
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No statistical analyses for this end point |
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End point title |
Pathological Complete Response (pCR) | ||||||
End point description |
The extent of residual tumor in the resected specimen was classified according to the TNM staging system of the American Joint Committee on Cancer/International Union Against Cancer (AJCC/UICC). In case of a complete pathological response (pCR; i.e., ypT0ypN0M0), an independent pathologist re-evaluated the tumor tissue. All efficacy parameters were analyzed descriptively.
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End point type |
Other pre-specified
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End point timeframe |
At the time of final surgery following the preoperative combined radio chemotherapy (chemotherapy: Oxaliplatin, Capecitabine).
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No statistical analyses for this end point |
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End point title |
Confirmed Pathological Complete Response (pCR) | ||||||
End point description |
The extent of residual tumor in the resected specimen was classified according to the TNM staging system of the American Joint Committee on Cancer/International Union Against Cancer (AJCC/UICC). In case of a complete pathological response (pCR; i.e., ypT0ypN0M0), an independent pathologist re-evaluated the tumor tissue. All efficacy parameters were analyzed descriptively.
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End point type |
Other pre-specified
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End point timeframe |
At the time of final surgery following the preoperative combined radio chemotherapy (chemotherapy: Oxaliplatin, Capecitabine).
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No statistical analyses for this end point |
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End point title |
Tumor status | ||||||||||||||||
End point description |
The extent of residual tumor in the resected specimen was classified according to the TNM staging system of the American Joint Committee on Cancer/International Union Against Cancer (AJCC/UICC). In case of a complete pathological response (pCR; i.e., ypT0ypN0M0), an independent pathologist re-evaluated the tumor tissue. All efficacy parameters were analyzed descriptively.
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End point type |
Other pre-specified
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End point timeframe |
At the time of final surgery following the preoperative combined radio chemotherapy (chemotherapy: Oxaliplatin, Capecitabine).
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No statistical analyses for this end point |
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End point title |
Nodal status | ||||||||||||
End point description |
The extent of residual tumor in the resected specimen was classified according to the TNM staging system of the American Joint Committee on Cancer/International Union Against Cancer (AJCC/UICC). In case of a complete pathological response (pCR; i.e., ypT0ypN0M0), an independent pathologist re-evaluated the tumor tissue. All efficacy parameters were analyzed descriptively.
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End point type |
Other pre-specified
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End point timeframe |
At the time of final surgery following the preoperative combined radio chemotherapy (chemotherapy: Oxaliplatin, Capecitabine).
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No statistical analyses for this end point |
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End point title |
Metastasis | ||||||||||
End point description |
The extent of residual tumor in the resected specimen was classified according to the TNM staging system of the American Joint Committee on Cancer/International Union Against Cancer (AJCC/UICC). In case of a complete pathological response (pCR; i.e., ypT0ypN0M0), an independent pathologist re-evaluated the tumor tissue. All efficacy parameters were analyzed descriptively.
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End point type |
Other pre-specified
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End point timeframe |
At the time of final surgery following the preoperative combined radio chemotherapy (chemotherapy: Oxaliplatin, Capecitabine).
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No statistical analyses for this end point |
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End point title |
Relapse-free survival | ||||||||||||
End point description |
Relapse-free survival was defined as the interval between surgery and the first evidence of locoregional recurrence, distant metastasis or death from any cause. Patients without relapse or death were right-censored at the last date when they were known to be alive (date of their last assessment). 5-year survival estimates (%) for relapse-free survival were presented based on Kaplan-Meier method.
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End point type |
Other pre-specified
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End point timeframe |
During follow-up
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Statistical analysis title |
Tumor down-categorization | ||||||||||||
Statistical analysis description |
Relapse-free survival was compared for patients with different chemotherapy response (without vs. with tumor down-categorization) at surgery. Comparison was done using Log-rank test with two-sided p-values. Hazard ratios (HRs) and their corresponding 95% confidence intervals (CIs) were estimated by Cox proportional hazards regression.
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Comparison groups |
Combined radio chemotherapy v Survival
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Number of subjects included in analysis |
116
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Analysis specification |
Pre-specified
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Analysis type |
other [2] | ||||||||||||
P-value |
= 0.0478 [3] | ||||||||||||
Method |
Logrank | ||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||
Point estimate |
2.43
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
0.98 | ||||||||||||
upper limit |
6.03 | ||||||||||||
Notes [2] - Subjects in analysis actually are 58 - but the number of subjects was counted twice due to the necessary workaround for single arm studies given by EudraCT to accomodate reporting of statistical analysis. [3] - Cox p=0.0556 |
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Statistical analysis title |
Pathological Complete Response (pCR) | ||||||||||||
Statistical analysis description |
Relapse-free survival was compared for patients with different chemotherapy response (without vs. with pCR) at surgery. Comparison was done using Log-rank test with two-sided p-values. Hazard ratios (HRs) and their corresponding 95% confidence intervals (CIs) were estimated by Cox proportional hazards regression.
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Comparison groups |
Combined radio chemotherapy v Survival
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Number of subjects included in analysis |
116
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Analysis specification |
Pre-specified
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Analysis type |
other [4] | ||||||||||||
P-value |
= 0.2591 [5] | ||||||||||||
Method |
Logrank | ||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||
Point estimate |
3
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
0.4 | ||||||||||||
upper limit |
22.4 | ||||||||||||
Notes [4] - Subjects in analysis actually are 58 - but the number of subjects was counted twice due to the necessary workaround for single arm studies given by EudraCT to accomodate reporting of statistical analysis. [5] - Cox p=0.2833 |
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Statistical analysis title |
Nodal status | ||||||||||||
Statistical analysis description |
Relapse free survival was compared for patients with different nodal status (yPN+ vs yPN-) at surgery. Comparison was done using Log-rank test with two-sided p-values. Hazard ratios (HRs) and their corresponding 95% confidence intervals (CIs) were estimated by Cox proportional hazards regression.
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Comparison groups |
Combined radio chemotherapy v Survival
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Number of subjects included in analysis |
116
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Analysis specification |
Pre-specified
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Analysis type |
other [6] | ||||||||||||
P-value |
< 0.0001 [7] | ||||||||||||
Method |
Logrank | ||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||
Point estimate |
8.13
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
3.29 | ||||||||||||
upper limit |
20.12 | ||||||||||||
Notes [6] - Subjects in analysis actually are 58 - but the number of subjects was counted twice due to the necessary workaround for single arm studies given by EudraCT to accomodate reporting of statistical analysis. [7] - Cox p<0.0001 |
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End point title |
Overall survival | ||||||||||||
End point description |
Overall survival was defined as the interval between surgery and death from any cause. Patients without death were right-censored at the last date when they were known to be alive (date of their last assessment). 5-year survival estimates (%) for overall survival were presented based on Kaplan-Meier method.
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End point type |
Other pre-specified
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End point timeframe |
During follow-up
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Statistical analysis title |
Tumor down-categorization | ||||||||||||
Statistical analysis description |
Overall survival was compared for patients with different chemotherapy response (without vs. with tumor down-categorization) at surgery. Comparison was done using Log-rank test with two-sided p-values. Hazard ratios (HRs) and their corresponding 95% confidence intervals (CIs) were estimated by Cox proportional hazards regression.
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Comparison groups |
Combined radio chemotherapy v Survival
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Number of subjects included in analysis |
116
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Analysis specification |
Pre-specified
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Analysis type |
other [8] | ||||||||||||
P-value |
= 0.3246 [9] | ||||||||||||
Method |
Logrank | ||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||
Point estimate |
1.61
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
0.62 | ||||||||||||
upper limit |
4.26 | ||||||||||||
Notes [8] - Subjects in analysis actually are 58 - but the number of subjects was counted twice due to the necessary workaround for single arm studies given by EudraCT to accomodate reporting of statistical analysis. [9] - Cox p=0.3292 |
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Statistical analysis title |
Pathological Complete Response (pCR) | ||||||||||||
Statistical analysis description |
Overall survival was compared for patients with different chemotherapy response (without vs. with pCR) at surgery. Comparison was done using Log-rank test with two-sided p-values. Hazard ratios (HRs) and their corresponding 95% confidence intervals (CIs) were estimated by Cox proportional hazards regression.
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Comparison groups |
Combined radio chemotherapy v Survival
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Number of subjects included in analysis |
116
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Analysis specification |
Pre-specified
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Analysis type |
other [10] | ||||||||||||
P-value |
= 0.4318 [11] | ||||||||||||
Method |
Logrank | ||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||
Point estimate |
2.2
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
0.29 | ||||||||||||
upper limit |
16.63 | ||||||||||||
Notes [10] - Subjects in analysis actually are 58 - but the number of subjects was counted twice due to the necessary workaround for single arm studies given by EudraCT to accomodate reporting of statistical analysis. [11] - Cox p=0.4437 |
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Statistical analysis title |
Nodal status | ||||||||||||
Statistical analysis description |
Overall survival was compared for patients with different nodal status (yPN+ vs yPN-) at surgery. Comparison was done using Log-rank test with two-sided p-values. Hazard ratios (HRs) and their corresponding 95% confidence intervals (CIs) were estimated by Cox proportional hazards regression.
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Comparison groups |
Combined radio chemotherapy v Survival
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Number of subjects included in analysis |
116
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Analysis specification |
Pre-specified
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Analysis type |
other [12] | ||||||||||||
P-value |
< 0.0001 [13] | ||||||||||||
Method |
Logrank | ||||||||||||
Parameter type |
Hazard ratio (HR) | ||||||||||||
Point estimate |
6.5
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
2.36 | ||||||||||||
upper limit |
17.85 | ||||||||||||
Notes [12] - Subjects in analysis actually are 58 - but the number of subjects was counted twice due to the necessary workaround for single arm studies given by EudraCT to accomodate reporting of statistical analysis. [13] - Cox p<0.0001 |
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Adverse events information
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Timeframe for reporting adverse events |
From first administration of radiochemotherapy until surgery
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Adverse event reporting additional description |
Adverse events were reported until the Interim Analysis (according to EudraCT definition) only - no adverse events were captured during follow-up and hence, there is no update on adverse events for the Final Analysis (according to EudraCT definition).
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Assessment type |
Systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
10.1
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Reporting groups
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Reporting group title |
Combined radiochemotherapy
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Reporting group description |
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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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14 Apr 2010 |
According to Protocol Amendment #1, collection of prolonged (after surgery) follow up survival data was done. This data should enable estimation of survival curves for overall survival, cancer specific survival and relapse-free survival. Additionally, relationship between study primary endpoints tumor stage downstaging and yPCR and survival endpoints was examined. It should be stated that study was not powered for comparison between chemotherapy response and survival endpoint. |
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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. | |||
Limitation of a nonrandomized design. | |||
Online references |
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http://www.ncbi.nlm.nih.gov/pubmed/29127435 |