Clinical Trial Results:
A Phase 2, Open-Label, Single-Arm Study of Pamiparib (BGB-290) for the Treatment of Patients with Metastatic Castration-Resistant Prostate Cancer (mCRPC) with Homologous Recombination Deficiency (HRD)
Summary
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EudraCT number |
2018-002587-28 |
Trial protocol |
GB ES |
Global end of trial date |
02 Sep 2020
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Results information
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Results version number |
v2(current) |
This version publication date |
03 Dec 2021
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First version publication date |
18 Aug 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 |
BGB-290-202
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT03712930 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
BeiGene, Ltd
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Sponsor organisation address |
BeiGene, Ltd., c/o BeiGene USA, Inc. 2955 Campus Drive, Suite 200 San Mateo, California , United States, 94403
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Public contact |
BeiGene DDT Call Center, BeiGene, 1 877-828-5568, clinicaltrials@beigene.com
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Scientific contact |
clinicaltrials@beigene.com, BeiGene, 1 877-828-5568, clinicaltrials@beigene.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 |
Final
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Date of interim/final analysis |
11 Nov 2020
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Is this the analysis of the primary completion data? |
Yes
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Primary completion date |
06 Aug 2020
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Global end of trial reached? |
Yes
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Global end of trial date |
02 Sep 2020
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Was the trial ended prematurely? |
Yes
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General information about the trial
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Main objective of the trial |
To evaluate the efficacy of pamiparib in patients with metastatic castration-resistant prostate cancer (mCRPC) positive for circulating tumor cells (CTC) with homologous recombination deficiency (CTC-HRD-positive; per Epic Sciences assay), as per Prostate Cancer Clinical Trials Working Group [PCWG3] criteria.
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Protection of trial subjects |
This trial was designed and monitored in accordance with Sponsor procedures, which comply with the ethical principles of GCP as required by the major regulatory authorities, and in accordance with the Declaration of Helsinki.
The IEC/IRB-approved ICF was signed and dated by the subject or the subject’s legally authorized representative before his or her participation in the study. A copy of each signed ICF was provided to the subject or the subject’s legally authorized representative. All signed and dated ICFs were retained in each patient’s study file or in the site file. For any updated or revised ICFs, written informed consent was obtained using the IEC/IRB-approved updated/revised ICFs for continued participation in the study.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
05 Feb 2019
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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 |
2 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 |
Australia: 6
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Country: Number of subjects enrolled |
United States: 6
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Country: Number of subjects enrolled |
Spain: 1
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Worldwide total number of subjects |
13
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EEA total number of subjects |
1
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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) |
4
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From 65 to 84 years |
9
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85 years and over |
0
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Recruitment
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Recruitment details |
Eighteen subjects were screened; 5 subjects failed screening and 13 subjects were dosed. | ||||||||||||||||
Pre-assignment
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Screening details |
All subjects enrolled had unknown BRCA1/2 status at study entry and were assigned to cohorts 1B or 2B; there were no subjects known to be BRCA1/2 positive at enrollment. | ||||||||||||||||
Period 1
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Period 1 title |
Overall (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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Pamiparib | ||||||||||||||||
Arm description |
Participants received 60 mg pamiparib orally twice daily | ||||||||||||||||
Arm type |
Experimental | ||||||||||||||||
Investigational medicinal product name |
Pamiparib
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Investigational medicinal product code |
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Other name |
BGB-290
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Pharmaceutical forms |
Capsule
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Routes of administration |
Oral use
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Dosage and administration details |
60 mg pamiparib capsule orally twice daily
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Baseline characteristics reporting groups
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Reporting group title |
Overall
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Reporting group description |
- | ||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
Pamiparib
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Reporting group description |
Participants received 60 mg pamiparib orally twice daily |
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End point title |
Objective Response Rate (ORR) Determined by Independent Central Review [1] | ||||||||
End point description |
ORR is the percentage of participants with a best objective response of complete response (CR) or partial response (PR) confirmed at a subsequent timepoint ≥ 4 weeks later by an Independent Review Committee (IRC). Efficacy-Evaluable Analysis Set: includes all participants in the Safety Analysis Set who had measurable disease at baseline and at least 1 post-baseline tumor assessment, unless they permanently discontinue pamiparib or the study early due to clinical progression or death before tumor assessment. Participants with available data were included in the analysis.
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End point type |
Primary
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End point timeframe |
Up to 1 year and 6 months
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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: This study stopped prematurely and only 13 subjects enrolled. No summary statistics are available given the limited data from the small number of evaluable subjects. |
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No statistical analyses for this end point |
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End point title |
Prostate-Specific Antigen (PSA) Response Rate [2] | ||||||||
End point description |
PSA response rate is defined as the percentage of participants with PSA decline ≥ 50% from baseline [confirmed by a second PSA value ≥ 3 weeks later] for CTC-HRD-positive patients with or without measurable disease. PSA-Evaluable Analysis Set: includes all participants in the Safety Analysis Set with ≥3 rising PSA levels with ≥ 1 week between determinations and screening PSA ≥ 2 μg/L) and who had at least 1 post-baseline PSA measurement unless they permanently discontinue pamiparib or the study early due to clinical progression or death before completed PSA assessment.
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End point type |
Primary
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End point timeframe |
Up to 1 year and 6 months
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Notes [2] - 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: This study stopped prematurely and only 13 subjects enrolled. No summary statistics are available given the limited data from the small number of evaluable subjects. |
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No statistical analyses for this end point |
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End point title |
Duration of Response | ||||||
End point description |
DOR is defined as the time from the date of the earliest documented CR or PR (that is subsequently confirmed) to radiographic disease progression or death due to any cause, whichever occurs first. Efficacy-Evaluable Analysis Set: includes all participants in the Safety Analysis Set who had measurable disease at baseline and at least 1 post-baseline tumor assessment, unless they permanently discontinue pamiparib or the study early due to clinical progression or death before tumor assessment. Participants with available data were included in the analysis.
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End point type |
Secondary
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End point timeframe |
Up to 1 year and 7 months
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Notes [3] - 9999 = Not applicable; No confirmed CR/PR. Duration of Response is not applicable. |
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No statistical analyses for this end point |
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End point title |
Objective Response Rate by Investigator | ||||||||
End point description |
ORR is the percentage of participants with a best objective response of complete response (CR) or partial response (PR) confirmed at a subsequent timepoint ≥ 4 weeks later by the investigator. Efficacy-Evaluable Analysis Set: includes all participants in the Safety Analysis Set who had measurable disease at baseline and at least 1 post-baseline tumor assessment, unless they permanently discontinue pamiparib or the study early due to clinical progression or death before tumor assessment. Participants with available data were included in the analysis.
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End point type |
Secondary
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End point timeframe |
Up to 1 year and 6 months
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No statistical analyses for this end point |
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End point title |
Time to Objective Response by Investigator | ||||||
End point description |
Time to objective response is defined as the time from the date of the first dose of study drug to the first documented confirmed response of CR or PR assessed by the investigator and summarized for participants who have achieved a confirmed objective response. Efficacy-Evaluable Analysis Set: includes all participants in the Safety Analysis Set who had measurable disease at baseline and at least 1 post-baseline tumor assessment, unless they permanently discontinue pamiparib or the study early due to clinical progression or death before tumor assessment. Participants with available data were included in the analysis.
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End point type |
Secondary
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End point timeframe |
Up to 1 year and 6 months
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Notes [4] - 9999 = Not applicable; No participants with confirmed CR/PR. Time to response is not applicable. |
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No statistical analyses for this end point |
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End point title |
Clinical Benefit Rate By Investigator | ||||||||
End point description |
Clinical benefit rate is defined as the percentage of participants with a documented confirmed CR, PR, or stable disease
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End point type |
Secondary
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End point timeframe |
Up to 1 year and 6 months
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No statistical analyses for this end point |
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End point title |
Time to PSA Response | ||||||
End point description |
Time to PSA response is defined as the time from the date of the first dose of study drug to the first PSA decline ≥ 50% that is subsequently confirmed. Assessments are summarized for participants who have achieved a confirmed PSA response. PSA-Evaluable Analysis Set: includes all participants in the Safety Analysis Set with ≥3 rising PSA levels with ≥ 1 week between determinations and screening PSA ≥ 2 μg/L and who had at least 1 post-baseline PSA measurement, unless they permanently discontinue pamiparib or the study early due to clinical progression or death before completed PSA assessment.
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End point type |
Secondary
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End point timeframe |
Up to 1 year and 6 months
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Notes [5] - 9999 = Not applicable; Participants with PSA response is 0. Time to PSA response is not applicable |
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No statistical analyses for this end point |
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End point title |
Duration of PSA Response | ||||||
End point description |
Duration of PSA response is defined as the time from the date of the earliest documented PSA response (that is subsequently confirmed) to PSA progression or death due to any cause, whichever occurs first. PSA progression is defined as a ≥ 25% increase in PSA with an absolute increase of ≥ 2 μg/L above the nadir (or above the baseline for patients with no PSA decline after12 weeks), confirmed by a second value ≥ 3 weeks later. The nadir is defined as the lowest value at or after baseline. PSA-Evaluable Analysis Set
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End point type |
Secondary
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End point timeframe |
Up to 1 year and 7 months
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Notes [6] - 9999 = Not applicable; Participants with PSA Response is 0. Duration of PSA response not applicable |
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No statistical analyses for this end point |
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End point title |
Time to PSA Progression | ||||||||
End point description |
Time to PSA progression is defined as the time from the date of the first dose of study drug to a ≥ 25% increase in PSA with an absolute increase of ≥ 2 ng/mL above the nadir [or above the baseline for participants with no PSA decline after 12 weeks], confirmed by a second value ≥ 3 weeks later. Safety Analysis Set : includes all participants enrolled into the study who received any dose of pamiparib.
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End point type |
Secondary
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End point timeframe |
Up to 1 year and 7 months
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No statistical analyses for this end point |
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End point title |
Time to Symptomatic Skeletal Event | ||||||
End point description |
Time to symptomatic skeletal event is defined as time from the date of the first dose of study drug to the first symptomatic fracture, radiation or surgery to bone, or spinal cord compression
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End point type |
Secondary
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End point timeframe |
Up to 1 year and 7 months
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Notes [7] - 9999 = Not applicable; Not participants had SSE |
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No statistical analyses for this end point |
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End point title |
Radiographic Progression-Free Survival | ||||||||
End point description |
Radiographic progression-free survival is defined as the time from the date of the first dose of study drug to radiographic disease progression by IRC or death due to any cause, whichever occurs first.
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End point type |
Secondary
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End point timeframe |
Up to 1 year and 7 months
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No statistical analyses for this end point |
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End point title |
Overall survival (OS) | ||||||||
End point description |
Overall survival is defined as the time from the date of the first dose of study drug to death due to any cause. Safety Analysis Set: includes all participants enrolled in the study who received any dose of pamiparib.
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End point type |
Secondary
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End point timeframe |
Up to 1 year and 7 months
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No statistical analyses for this end point |
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End point title |
Number of Participants with Treatment-Emergent Adverse Events graded according to National Cancer Institute-Common Terminology Criteria for Adverse Events (NCI-CTCAE)Version 4.03 | ||||||||||||||||||||||||||||||||||||||
End point description |
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End point type |
Secondary
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End point timeframe |
From the date of first Pamiparib dose until 30 days after the last dose or initiation of new anti-cancer therapy, whichever occurs first. (Up to 1 year and 7 months)
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No statistical analyses for this end point |
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Adverse events information
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Timeframe for reporting adverse events |
From the date of first dose of Pamiparib until 30 days after the last dose or initiation of new anti-cancer therapy, whichever occurs first (up to approximately 1 year and 7 months)
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Adverse event reporting additional description |
Safety Analysis Set (SAF): included all subjects enrolled in the study who received any dose of pamiparib. The Safety Analysis Set was used for all safety analyses.
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Assessment type |
Non-systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
23.0
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Reporting groups
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Reporting group title |
Pamiparib
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Reporting group description |
Participants received 60 mg pamiparib orally twice daily | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Frequency threshold for reporting non-serious adverse events: 0% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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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16 Oct 2018 |
To incorporate additional changes based on feedback from the United States Food and Drug Administration (US FDA)
To incorporate changes per BeiGene protocol template for better consistency across multiple studies
Minor editorial and formatting changes have been made to enhance clarity and readability; |
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Interruptions (globally) |
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Were there any global interruptions to the trial? Yes | |||||||
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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 |