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NCT01568866 · OUTCOME

Overall Survival

Phase 3 Study With Carfilzomib and Dexamethasone Versus Bortezomib and Dexamethasone for Relapsed Multiple Myeloma Patients · Source last updated 2022-11-14

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
From randomization until the data cut-off date of 03 January 2017; median follow-up time for OS was 36.9 and 37.5 months for each treatment group respectively.

What was measured

Overall survival (OS) is defined as the time from randomization to the date of death (whatever the cause). Participants who were alive or lost to follow-up as of the data analysis cut-off date were censored at the patient's date of last contact (last known to be alive). Median overall survival was estimated using the Kaplan-Meier method.

Analysis population: Intent-to-treat population

Groups in this outcome

Bortezomib + DEX

Participants received bortezomib 1.3 mg/m² administered intravenously (IV) or subcutaneously (SC) on Days 1, 4, 8, and 11 of a 21-day cycle plus dexamethasone (DEX) 20 mg administered on Days 1, 2, 4, 5, 8, 9, 11, and 12 of each 21-day cycle.

Carfilzomib + DEX

Participants received 20 mg/m² carfilzomib administered by IV infusion on Days 1 and 2 of Cycle 1, followed by 56 mg/m² on Days 8, 9, 15, and 16 of Cycle 1 and for each 28-day cycle thereafter. Additionally, participants received 20 mg dexamethasone on Days 1, 2, 8, 9, 15, 16, 22, and 23 of each 28 day cycle.

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

Analysis denominator · Participants

GroupSource count
Bortezomib + DEX465
Carfilzomib + DEX464

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Bortezomib + DEX40.0Not reported32.642.3Not reported
Carfilzomib + DEX47.6Not reported42.5NACould not be estimated due to the low number of events

Source statistical analyses

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

  1. ci Lower Limit
    0.648
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.964
    estimate Comment
    The hazard ratio (carfilzomib/bortezomib) was estimated using a Cox proportional hazards model stratified by prior proteasome inhibitor treatment, lines of prior treatment, ISS stage, and choice of route of bortezomib administration.
    group Description
    The second interim analysis of overall survival was to be conducted after 394 events had been reached. A one-sided significance level was determined using the O'Brien-Fleming-type α spending function based on the actual number of events (α=0.0123).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER_LEGACY
    p Value
    0.0100
    p Value Comment
    The multiplicity in testing secondary endpoints was adjusted per group using the sequential Holm procedure to preserve the family-wise error rate at 0.025.
    param Type
    Hazard Ratio (HR)
    param Value
    0.791
    statistical Comment
    Log rank test stratified by the randomization stratification factors.
    statistical Method
    Stratified Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.648
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.964
    estimate Comment
    The hazard ratio (carfilzomib/bortezomib) was estimated using a Cox proportional hazards model stratified by prior proteasome inhibitor treatment, lines of prior treatment, ISS stage, and choice of route of bortezomib administration.
    group Description
    The second interim analysis of overall survival was to be conducted after 394 events had been reached. A one-sided significance level was determined using the O'Brien-Fleming-type α spending function based on the actual number of events (α=0.0123).
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER_LEGACY
    p Value
    0.0100
    p Value Comment
    The multiplicity in testing secondary endpoints was adjusted per group using the sequential Holm procedure to preserve the family-wise error rate at 0.025.
    param Type
    Hazard Ratio (HR)
    param Value
    0.791
    statistical Comment
    Log rank test stratified by the randomization stratification factors.
    statistical Method
    Stratified Log Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        32.6
        upper Limit
        42.3
        value
        40.0
      2. comment
        Could not be estimated due to the low number of events
        group Id
        OG001
        lower Limit
        42.5
        upper Limit
        NA
        value
        47.6
denoms
  1. counts
    1. group Id
      OG000
      value
      465
    2. group Id
      OG001
      value
      464
    units
    Participants
description
Overall survival (OS) is defined as the time from randomization to the date of death (whatever the cause). Participants who were alive or lost to follow-up as of the data analysis cut-off date were censored at the patient's date of last contact (last known to be alive). Median overall survival was estimated using the Kaplan-Meier method.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received bortezomib 1.3 mg/m² administered intravenously (IV) or subcutaneously (SC) on Days 1, 4, 8, and 11 of a 21-day cycle plus dexamethasone (DEX) 20 mg administered on Days 1, 2, 4, 5, 8, 9, 11, and 12 of each 21-day cycle.
    id
    OG000
    title
    Bortezomib + DEX
  2. description
    Participants received 20 mg/m² carfilzomib administered by IV infusion on Days 1 and 2 of Cycle 1, followed by 56 mg/m² on Days 8, 9, 15, and 16 of Cycle 1 and for each 28-day cycle thereafter. Additionally, participants received 20 mg dexamethasone on Days 1, 2, 8, 9, 15, 16, 22, and 23 of each 28 day cycle.
    id
    OG001
    title
    Carfilzomib + DEX
param Type
MEDIAN
population Description
Intent-to-treat population
reporting Status
POSTED
time Frame
From randomization until the data cut-off date of 03 January 2017; median follow-up time for OS was 36.9 and 37.5 months for each treatment group respectively.
title
Overall Survival
type
SECONDARY
unit Of Measure
months

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Preserved source evidence · Not medical advice