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NCT02492711 · OUTCOME

To Evaluate Progression-free Survival (PFS), as Assessed by Study Investigators.

Margetuximab Plus Chemotherapy vs Trastuzumab Plus Chemotherapy in the Treatment of HER2+ Metastatic Breast Cancer · Source last updated 2025-03-17

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
Tumor assessments are conducted every 6 weeks for the first 24 weeks and then every 24 weeks until progression of cancer, up to 6.5 years.

Analysis population: Analysis population consisted of all patient who had investigator-assessed responses to treatment as of the interim analysis. The outcome measure is calculated only for the randomized study population. The 88 participants in the sub-study were not part of the efficacy population.

Groups in this outcome

Margetuximab Plus Chemotherapy

Margetuximab 15 mg/kg administered every 21 days with physician's choice of 1 of 4 backbone chemotherapy regimens.

Trastuzumab Plus Chemotherapy

Trastuzumab administered every 21 days with physician's choice of 1 of 4 backbone chemotherapy regimens.

Margetuximab Infusion Substudy

Margetuximab with or without chemotherapy

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

Analysis denominator · Participants

GroupSource count
Margetuximab Plus Chemotherapy160
Trastuzumab Plus Chemotherapy177
Margetuximab Infusion Substudy0

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Margetuximab Plus Chemotherapy5.6Not reported5.066.67Not reported
Trastuzumab Plus Chemotherapy4.2Not reported3.985.39Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.556
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.870
    estimate Comment
    Stratified Cox Proportional Model
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0014
    param Type
    Hazard Ratio (HR)
    param Value
    0.70
    statistical Comment
    Stratified Log-Rank Test
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.556
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.870
    estimate Comment
    Stratified Cox Proportional Model
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    0.0014
    param Type
    Hazard Ratio (HR)
    param Value
    0.70
    statistical Comment
    Stratified Log-Rank Test
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        5.06
        upper Limit
        6.67
        value
        5.6
      2. group Id
        OG001
        lower Limit
        3.98
        upper Limit
        5.39
        value
        4.2
denoms
  1. counts
    1. group Id
      OG000
      value
      160
    2. group Id
      OG001
      value
      177
    3. group Id
      OG002
      value
      0
    units
    Participants
dispersion Type
95% Confidence Interval
groups
  1. description
    Margetuximab 15 mg/kg administered every 21 days with physician's choice of 1 of 4 backbone chemotherapy regimens.
    id
    OG000
    title
    Margetuximab Plus Chemotherapy
  2. description
    Trastuzumab administered every 21 days with physician's choice of 1 of 4 backbone chemotherapy regimens.
    id
    OG001
    title
    Trastuzumab Plus Chemotherapy
  3. description
    Margetuximab with or without chemotherapy
    id
    OG002
    title
    Margetuximab Infusion Substudy
param Type
MEDIAN
population Description
Analysis population consisted of all patient who had investigator-assessed responses to treatment as of the interim analysis. The outcome measure is calculated only for the randomized study population. The 88 participants in the sub-study were not part of the efficacy population.
reporting Status
POSTED
time Frame
Tumor assessments are conducted every 6 weeks for the first 24 weeks and then every 24 weeks until progression of cancer, up to 6.5 years.
title
To Evaluate Progression-free Survival (PFS), as Assessed by Study Investigators.
type
SECONDARY
unit Of Measure
months

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Preserved source evidence · Not medical advice