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NCT01945775 · OUTCOME

Progression-Free Survival (PFS): Independent Radiological Facility (IRF) Assessment

A Study Evaluating Talazoparib (BMN 673), a PARP Inhibitor, in Advanced and/or Metastatic Breast Cancer Patients With BRCA Mutation (EMBRACA Study) · Source last updated 2022-01-20

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
MEDIAN
Unit
months
Interval / dispersion
95% Confidence Interval
Time frame
Baseline until radiologic progressive disease or death due to any cause (up to maximum duration of 36.9 months)

What was measured

IRF assessed PFS was defined as time (in months) from randomization until the date of first documented radiologic progressive disease per response evaluation criteria in solid tumors (RECIST) version 1.1 or death from any cause, whichever occurs first. As per RECIST v1.1, progression defined as 1) for target lesions: at least a 20% increase in the sum of target lesion measurements, compared to the smallest sum on study (including baseline), the absolute increase in the sum has to be at least 5 millimeter (mm); 2) for non-target lesions: unequivocal progression of non-target lesions, evaluated as a whole, such that it is clear that treatment has failed and disease is progressing, regardless of the status of the target lesions; 3) and/or appearance of one or more new lesions. The analysis was performed by Kaplan-Meier method.

Analysis population: Intent-to-treat (ITT) analysis population included all randomized participants.

Groups in this outcome

Talazoparib

Participants received talazoparib 1 mg, orally, once daily until radiographic disease progression as determined by the central IRF, unacceptable toxicity, consent withdrawal, physician's decision to terminate treatment, or sponsor's decision to terminate the trial (up to a maximum of 70.2 months). One cycle was of 21 days.

Physician's Choice Treatment

Participants received 1 of the following drugs in specified regimens, as per the physician's choice: 1) capecitabine 1250 mg/m\^2 orally twice daily on Day 1 to 14 in each cycle; 2) eribulin mesylate 1.4 mg/m\^2 (equivalent to eribulin 1.23 mg/ m\^2), as 2 to 5 minute IV infusion on Day 1 and 8 in each cycle; 3) gemcitabine 1250 mg/m\^2 as 30-minute IV infusion on Day 1 and 8 in each cycle; 4) vinorelbine 30 mg/m\^2 as 6 to 10 minute IV infusion on Day 1, 8, and 15 in each cycle; until radiographic disease progression as determined by the central IRF, unacceptable toxicity, consent withdrawal, physician's decision to terminate treatment, or Sponsor's decision to terminate the trial (up to a maximum of 45.3 months). One cycle was of 21 days.

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
Talazoparib287
Physician's Choice Treatment144

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Talazoparib8.6Not reported7.29.3Not reported
Physician's Choice Treatment5.6Not reported4.26.7Not reported

Source statistical analyses

Group order, estimate direction, methods and comments are retained. No treatment ranking is inferred.

  1. ci Lower Limit
    0.413
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.711
    group Description
    Hazard ratio was based on stratified Cox regression model with treatment as the only covariate (stratification factors: number of prior cytotoxic chemotherapy regimens, triple negative status, history of central nervous system metastasis status).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    <0.0001
    param Type
    Hazard Ratio, log
    param Value
    0.542
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.413
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.711
    group Description
    Hazard ratio was based on stratified Cox regression model with treatment as the only covariate (stratification factors: number of prior cytotoxic chemotherapy regimens, triple negative status, history of central nervous system metastasis status).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    <0.0001
    param Type
    Hazard Ratio, log
    param Value
    0.542
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        7.2
        upper Limit
        9.3
        value
        8.6
      2. group Id
        OG001
        lower Limit
        4.2
        upper Limit
        6.7
        value
        5.6
denoms
  1. counts
    1. group Id
      OG000
      value
      287
    2. group Id
      OG001
      value
      144
    units
    Participants
description
IRF assessed PFS was defined as time (in months) from randomization until the date of first documented radiologic progressive disease per response evaluation criteria in solid tumors (RECIST) version 1.1 or death from any cause, whichever occurs first. As per RECIST v1.1, progression defined as 1) for target lesions: at least a 20% increase in the sum of target lesion measurements, compared to the smallest sum on study (including baseline), the absolute increase in the sum has to be at least 5 millimeter (mm); 2) for non-target lesions: unequivocal progression of non-target lesions, evaluated as a whole, such that it is clear that treatment has failed and disease is progressing, regardless of the status of the target lesions; 3) and/or appearance of one or more new lesions. The analysis was performed by Kaplan-Meier method.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received talazoparib 1 mg, orally, once daily until radiographic disease progression as determined by the central IRF, unacceptable toxicity, consent withdrawal, physician's decision to terminate treatment, or sponsor's decision to terminate the trial (up to a maximum of 70.2 months). One cycle was of 21 days.
    id
    OG000
    title
    Talazoparib
  2. description
    Participants received 1 of the following drugs in specified regimens, as per the physician's choice: 1) capecitabine 1250 mg/m\^2 orally twice daily on Day 1 to 14 in each cycle; 2) eribulin mesylate 1.4 mg/m\^2 (equivalent to eribulin 1.23 mg/ m\^2), as 2 to 5 minute IV infusion on Day 1 and 8 in each cycle; 3) gemcitabine 1250 mg/m\^2 as 30-minute IV infusion on Day 1 and 8 in each cycle; 4) vinorelbine 30 mg/m\^2 as 6 to 10 minute IV infusion on Day 1, 8, and 15 in each cycle; until radiographic disease progression as determined by the central IRF, unacceptable toxicity, consent withdrawal, physician's decision to terminate treatment, or Sponsor's decision to terminate the trial (up to a maximum of 45.3 months). One cycle was of 21 days.
    id
    OG001
    title
    Physician's Choice Treatment
param Type
MEDIAN
population Description
Intent-to-treat (ITT) analysis population included all randomized participants.
reporting Status
POSTED
time Frame
Baseline until radiologic progressive disease or death due to any cause (up to maximum duration of 36.9 months)
title
Progression-Free Survival (PFS): Independent Radiological Facility (IRF) Assessment
type
PRIMARY
unit Of Measure
months

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Preserved source evidence · Not medical advice