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NCT03901339 · OUTCOME

Overall Survival (OS)

Study of Sacituzumab Govitecan-hziy Versus Treatment of Physician's Choice in Participants With HR+/HER2- Metastatic Breast Cancer · Source last updated 2024-10-21

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
Up to 42.8 months

What was measured

OS was defined as the time from the date of randomization to the date of death from any cause. OS was estimated using Kaplan-Meier estimate. Participants without documentation of death were censored on the date they were last known to be alive.

Analysis population: Participants in the ITT Population were analyzed.

Groups in this outcome

Sacituzumab Govitecan

Participants received sacituzumab govitecan 10 mg/kg of body weight, administered as a slow IV infusion on Days 1 and 8 of a 21-day treatment cycle until progression of disease, occurrence of unacceptable AEs, or another treatment discontinuation criterion was met (up to 40.1 months).

Treatment of Physician's Choice (TPC)

Participants received TPC (ie, eribulin, capecitabine, gemcitabine, or vinorelbine), administered as a single-agent treatment that was determined by the investigator before participant randomization until progression of disease, occurrence of unacceptable AEs, or another treatment discontinuation criterion was met. Dosing per NCCN guidelines (with dose modifications for if toxic) * Eribulin was administered IV at a dose 1.4 mg/m\^2 at North American sites and 1.2 mg/m\^2 at European sites on Days 1 and 8 of a 21-day cycle (up to 22.5 months). * Capecitabine 1000 to 1250 mg/m\^2 was administered in a 21-day cycle, with capecitabine administered orally twice daily for 2 weeks followed by 1-week rest period (up to 12.9 months). * Gemcitabine 800 to 1200 mg/m\^2 was administered IV on Days 1, 8, and 15 of a 28-day cycle (up to 22.3 months). * Vinorelbine 25 mg/m\^2 was administered as a weekly IV injection (up to 8.1 months). Vinorelbine was not allowed as TPC for any participant with Grade 2 neuropathy.

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

Analysis denominator · Participants

GroupSource count
Sacituzumab Govitecan272
Treatment of Physician's Choice (TPC)271

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Sacituzumab Govitecan14.5Not reported13.016.0Not reported
Treatment of Physician's Choice (TPC)11.2Not reported10.212.6Not reported

Source statistical analyses

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

  1. ci Lower Limit
    0.652
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.952
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    OTHER
    p Value
    0.0133
    p Value Comment
    Stratified log-rank test and stratified Cox regression adjusted for stratification factors: prior chemotherapy regimens for metastatic disease, presence of visceral metastasis, and endocrine therapy in the metastatic setting for at least 6 months.
    param Type
    Hazard Ratio (HR)
    param Value
    0.788
    statistical Method
    Log Rank
Complete source fields
analyses
  1. ci Lower Limit
    0.652
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    0.952
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    OTHER
    p Value
    0.0133
    p Value Comment
    Stratified log-rank test and stratified Cox regression adjusted for stratification factors: prior chemotherapy regimens for metastatic disease, presence of visceral metastasis, and endocrine therapy in the metastatic setting for at least 6 months.
    param Type
    Hazard Ratio (HR)
    param Value
    0.788
    statistical Method
    Log Rank
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        13.0
        upper Limit
        16.0
        value
        14.5
      2. group Id
        OG001
        lower Limit
        10.2
        upper Limit
        12.6
        value
        11.2
denoms
  1. counts
    1. group Id
      OG000
      value
      272
    2. group Id
      OG001
      value
      271
    units
    Participants
description
OS was defined as the time from the date of randomization to the date of death from any cause. OS was estimated using Kaplan-Meier estimate. Participants without documentation of death were censored on the date they were last known to be alive.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants received sacituzumab govitecan 10 mg/kg of body weight, administered as a slow IV infusion on Days 1 and 8 of a 21-day treatment cycle until progression of disease, occurrence of unacceptable AEs, or another treatment discontinuation criterion was met (up to 40.1 months).
    id
    OG000
    title
    Sacituzumab Govitecan
  2. description
    Participants received TPC (ie, eribulin, capecitabine, gemcitabine, or vinorelbine), administered as a single-agent treatment that was determined by the investigator before participant randomization until progression of disease, occurrence of unacceptable AEs, or another treatment discontinuation criterion was met. Dosing per NCCN guidelines (with dose modifications for if toxic) * Eribulin was administered IV at a dose 1.4 mg/m\^2 at North American sites and 1.2 mg/m\^2 at European sites on Days 1 and 8 of a 21-day cycle (up to 22.5 months). * Capecitabine 1000 to 1250 mg/m\^2 was administered in a 21-day cycle, with capecitabine administered orally twice daily for 2 weeks followed by 1-week rest period (up to 12.9 months). * Gemcitabine 800 to 1200 mg/m\^2 was administered IV on Days 1, 8, and 15 of a 28-day cycle (up to 22.3 months). * Vinorelbine 25 mg/m\^2 was administered as a weekly IV injection (up to 8.1 months). Vinorelbine was not allowed as TPC for any participant with Grade 2 neuropathy.
    id
    OG001
    title
    Treatment of Physician's Choice (TPC)
param Type
MEDIAN
population Description
Participants in the ITT Population were analyzed.
reporting Status
POSTED
time Frame
Up to 42.8 months
title
Overall Survival (OS)
type
SECONDARY
unit Of Measure
months

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Preserved source evidence · Not medical advice