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NCT06504524 · OUTCOME

Overall Survival (OS): C1071003 Cohort A Versus TM-MM Database Using Inverse Probability of Treatment Weights (IPTW) Analysis

A Study to Compare the Effects of Elranatamab (PF 06863135) Versus Standard of Care (SOC) in Patients With Multiple Myeloma (MM) in Germany and US · Source last updated 2025-06-27

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
C1071003: First dose to death due to any cause or censoring whichever occurred first (maximum [max] follow-up of 2.09 years [Y]); TM-MM Database: SOC to death due to any cause or censoring whichever occurred first (max follow-up of 4.22Y)

What was measured

OS: A) C1071003 Cohort A: OS was defined as time from the date of the first dose of elranatamab until death due to any cause. Participants were censored at loss to or end of follow-up. B) TM-MM Database: OS was defined as time from initiation of SOC until death due to any cause. Participants were censored at loss to follow-up or end of the study period. Kaplan Meier method was used for analysis. Retrospective data was evaluated in this observational study for approximately 9 months.

Analysis population: Eligible participants whose data was retrieved and was used in this retrospective cohort study. In this outcome measure, IPTW analysis was applied. IPTW eliminated the effect of confounding by observed baseline participant characteristics, improve covariate balance, and thereby obtained unbiased estimates of treatment effects.

Groups in this outcome

C1071003 Cohort A

Eligible participants with TCR-MM, who were BCMA naïve, who initiated elranatamab (PF-06863135) following TCR eligibility in study C1071003 (NCT04649359) Cohort A were included.

RWD: TM-MM Database

Eligible participants with TCR-MM who initiated SOC treatment and were identified from TM-MM database in real world setting under routine clinical practice outside of clinical trials were included. This arm served as external control arm.

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

Analysis denominator · Participants

GroupSource count
C1071003 Cohort A118
RWD: TM-MM Database277

Reported measurements

Source class 1
Values in Months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
C1071003 Cohort A13.27Not reported9.59NAUpper limit of 95% confidence interval (CI) could not be estimated due to insufficient number of participants with events.
RWD: TM-MM Database14.29Not reported12.9824.08Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.705
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    1.804
    estimate Comment
    IPTW hazard ratio (HR) were estimated using weighted Cox proportional hazard models and confidence intervals were estimated using robust error variances. Stabilized IPT weights truncated at the 99.5th percentile were used.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    OTHER
    p Value
    =0.615
    param Type
    Hazard Ratio (HR)
    param Value
    1.128
    statistical Method
    Regression, Cox
Complete source fields
analyses
  1. ci Lower Limit
    0.705
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    1.804
    estimate Comment
    IPTW hazard ratio (HR) were estimated using weighted Cox proportional hazard models and confidence intervals were estimated using robust error variances. Stabilized IPT weights truncated at the 99.5th percentile were used.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    OTHER
    p Value
    =0.615
    param Type
    Hazard Ratio (HR)
    param Value
    1.128
    statistical Method
    Regression, Cox
classes
  1. categories
    1. measurements
      1. comment
        Upper limit of 95% confidence interval (CI) could not be estimated due to insufficient number of participants with events.
        group Id
        OG000
        lower Limit
        9.59
        upper Limit
        NA
        value
        13.27
      2. group Id
        OG001
        lower Limit
        12.98
        upper Limit
        24.08
        value
        14.29
denoms
  1. counts
    1. group Id
      OG000
      value
      118
    2. group Id
      OG001
      value
      277
    units
    Participants
description
OS: A) C1071003 Cohort A: OS was defined as time from the date of the first dose of elranatamab until death due to any cause. Participants were censored at loss to or end of follow-up. B) TM-MM Database: OS was defined as time from initiation of SOC until death due to any cause. Participants were censored at loss to follow-up or end of the study period. Kaplan Meier method was used for analysis. Retrospective data was evaluated in this observational study for approximately 9 months.
dispersion Type
95% Confidence Interval
groups
  1. description
    Eligible participants with TCR-MM, who were BCMA naïve, who initiated elranatamab (PF-06863135) following TCR eligibility in study C1071003 (NCT04649359) Cohort A were included.
    id
    OG000
    title
    C1071003 Cohort A
  2. description
    Eligible participants with TCR-MM who initiated SOC treatment and were identified from TM-MM database in real world setting under routine clinical practice outside of clinical trials were included. This arm served as external control arm.
    id
    OG001
    title
    RWD: TM-MM Database
param Type
MEDIAN
population Description
Eligible participants whose data was retrieved and was used in this retrospective cohort study. In this outcome measure, IPTW analysis was applied. IPTW eliminated the effect of confounding by observed baseline participant characteristics, improve covariate balance, and thereby obtained unbiased estimates of treatment effects.
reporting Status
POSTED
time Frame
C1071003: First dose to death due to any cause or censoring whichever occurred first (maximum [max] follow-up of 2.09 years [Y]); TM-MM Database: SOC to death due to any cause or censoring whichever occurred first (max follow-up of 4.22Y)
title
Overall Survival (OS): C1071003 Cohort A Versus TM-MM Database Using Inverse Probability of Treatment Weights (IPTW) Analysis
type
PRIMARY
unit Of Measure
Months

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