Skip to content
← Full study record

NCT03275285 · OUTCOME

Time to Progression (TTP): Primary Analysis

Multinational Clinical Study Comparing Isatuximab, Carfilzomib And Dexamethasone To Carfilzomib And Dexamethasone In Relapse And/Or Refractory Multiple Myeloma Patients · Source last updated 2026-02-09

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 primary analysis data cut-off date of 7 Feb 2020 (the median duration of follow-up was 20.73 months)

What was measured

TTP was defined as time in months from randomization to the date of first documentation of PD (as determined by the IRC). If progression was not observed before the analysis cut-off date or the date of initiation of further anti-myeloma treatment, TTP was censored at the date of the last valid disease assessment not showing disease progression performed prior to initiation of a further anti-myeloma treatment (if any) or the analysis cut-off date, whichever comes first. As per IMWG criteria, PD was defined for participants with inc of \>= 25% from lowest confirmed value in any one of the following criteria: serum M-protein (the absolute inc must be \>= 0.5 g/dL), serum M-protein inc \>=1 g/dL if the lowest M component was \>=5 g/dL; urine M-component (the absolute inc must be \>=200 mg/24hour), appearance of new lesion(s), \>=50% inc from nadir in SPD of \>1 lesion, or \>=50% inc in the longest diameter of a previous lesion \>1 centimeter in short axis.

Analysis population: Analysis was performed on ITT population. Analysis was performed by Kaplan-Meier method.

Groups in this outcome

Carfilzomib + Dexamethasone (Kd)

Participants received carfilzomib 20 mg/m\^2, IV infusion on Days 1, and 2 in Cycle 1, and then escalated to 56 mg/m\^2 on Days 8, 9, 15 and 16 of Cycle 1 and then on Days 1, 2, 8, 9, 15 and 16 of each subsequent 28-day treatment cycle along with dexamethasone 20 mg, PO or IV on Days 1, 2, 8, 9, 15, 16, 22 and 23 of each 28-day treatment cycle until disease progression or unacceptable adverse event or participant's decision to discontinue the study treatment or any other reason, whichever comes first (maximum exposure: 114 weeks).

Isatuximab + Carfilzomib + Dexamethasone (IKd)

Participants received isatuximab 10 mg/kg, IV infusion on Days 1, 8, 15 and 22 in Cycle 1, and then on Days 1 and Day 15 of each 28-day treatment cycle plus carfilzomib 20 mg/m\^2, IV on Days 1, and 2 in Cycle 1, and then escalated to 56 mg/m\^2 on Days 8, 9, 15 and 16 of Cycle 1 and then on Days 1, 2, 8, 9, 15 and 16 of each subsequent 28-day treatment cycle and dexamethasone 20 mg, PO or IV on Day 1, 2, 8, 9, 15, 16, 22 and 23 of each 28-day treatment cycle until disease progression or unacceptable adverse event or participant's decision to discontinue the study treatment or any other reason, whichever comes first (maximum exposure: 111 weeks).

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

Analysis denominator · Participants

GroupSource count
Carfilzomib + Dexamethasone (Kd)123
Isatuximab + Carfilzomib + Dexamethasone (IKd)179

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Carfilzomib + Dexamethasone (Kd)20.27Not reported16.986NAUpper limit of the confidence interval could not be reached due to less number of participants with the progression event.
Isatuximab + Carfilzomib + Dexamethasone (IKd)NANot reportedNANAMedian and the upper and lower limit of confidence interval could not be calculated because of less than 50% of the participants with the progression event.

Source statistical analyses

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

  1. ci Lower Limit
    0.324
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.757
    estimate Comment
    Stratification was done on the number of prior lines of therapy (1 vs. \>1) and R-ISS stage (I or II vs. III vs. not classified) according to IRT.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    param Type
    Stratified Hazard Ratio
    param Value
    0.495
Complete source fields
analyses
  1. ci Lower Limit
    0.324
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.757
    estimate Comment
    Stratification was done on the number of prior lines of therapy (1 vs. \>1) and R-ISS stage (I or II vs. III vs. not classified) according to IRT.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    param Type
    Stratified Hazard Ratio
    param Value
    0.495
classes
  1. categories
    1. measurements
      1. comment
        Upper limit of the confidence interval could not be reached due to less number of participants with the progression event.
        group Id
        OG000
        lower Limit
        16.986
        upper Limit
        NA
        value
        20.27
      2. comment
        Median and the upper and lower limit of confidence interval could not be calculated because of less than 50% of the participants with the progression event.
        group Id
        OG001
        lower Limit
        NA
        upper Limit
        NA
        value
        NA
denoms
  1. counts
    1. group Id
      OG000
      value
      123
    2. group Id
      OG001
      value
      179
    units
    Participants
description
TTP was defined as time in months from randomization to the date of first documentation of PD (as determined by the IRC). If progression was not observed before the analysis cut-off date or the date of initiation of further anti-myeloma treatment, TTP was censored at the date of the last valid disease assessment not showing disease progression performed prior to initiation of a further anti-myeloma treatment (if any) or the analysis cut-off date, whichever comes first. As per IMWG criteria, PD was defined for participants with inc of \>= 25% from lowest confirmed value in any one of the following criteria: serum M-protein (the absolute inc must be \>= 0.5 g/dL), serum M-protein inc \>=1 g/dL if the lowest M component was \>=5 g/dL; urine M-component (the absolute inc must be \>=200 mg/24hour), appearance of new lesion(s), \>=50% inc from nadir in SPD of \>1 lesion, or \>=50% inc in the longest diameter of a previous lesion \>1 centimeter in short axis.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received carfilzomib 20 mg/m\^2, IV infusion on Days 1, and 2 in Cycle 1, and then escalated to 56 mg/m\^2 on Days 8, 9, 15 and 16 of Cycle 1 and then on Days 1, 2, 8, 9, 15 and 16 of each subsequent 28-day treatment cycle along with dexamethasone 20 mg, PO or IV on Days 1, 2, 8, 9, 15, 16, 22 and 23 of each 28-day treatment cycle until disease progression or unacceptable adverse event or participant's decision to discontinue the study treatment or any other reason, whichever comes first (maximum exposure: 114 weeks).
    id
    OG000
    title
    Carfilzomib + Dexamethasone (Kd)
  2. description
    Participants received isatuximab 10 mg/kg, IV infusion on Days 1, 8, 15 and 22 in Cycle 1, and then on Days 1 and Day 15 of each 28-day treatment cycle plus carfilzomib 20 mg/m\^2, IV on Days 1, and 2 in Cycle 1, and then escalated to 56 mg/m\^2 on Days 8, 9, 15 and 16 of Cycle 1 and then on Days 1, 2, 8, 9, 15 and 16 of each subsequent 28-day treatment cycle and dexamethasone 20 mg, PO or IV on Day 1, 2, 8, 9, 15, 16, 22 and 23 of each 28-day treatment cycle until disease progression or unacceptable adverse event or participant's decision to discontinue the study treatment or any other reason, whichever comes first (maximum exposure: 111 weeks).
    id
    OG001
    title
    Isatuximab + Carfilzomib + Dexamethasone (IKd)
param Type
MEDIAN
population Description
Analysis was performed on ITT population. Analysis was performed by Kaplan-Meier method.
reporting Status
POSTED
time Frame
From randomization until the primary analysis data cut-off date of 7 Feb 2020 (the median duration of follow-up was 20.73 months)
title
Time to Progression (TTP): Primary Analysis
type
SECONDARY
unit Of Measure
months

Download exact source JSON → · Snapshot ctgov-results-191f4516d4760045304b24a0

Preserved source evidence · Not medical advice