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NCT03901339 · OUTCOME

Duration of Response (DOR) by BICR and LIR Assessment

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

DOR was defined as the time from the date a response of CR or PR was first documented until the date of the first documentation of disease progression or date of death (whichever occurred first). DOR was analyzed based on both BICR and LIR assessments. CR: Disappearance of all target and non-target lesions; and normalization of tumor marker levels initially above upper limits of normal; PR: ≥30% decrease in the sum of the LD of target lesions, taking as reference the baseline sum LD. Disease progression was defined as an increase of greater than 20% in the sum of the LD of target lesions and a 5 mm absolute increase, taking as a reference the smallest sum LD recorded since the baseline assessment or the appearance of new non-target lesions. DOR was estimated using Kaplan-Meier estimate.

Analysis population: Participants in the ITT Population with confirmed objective response 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 Govitecan58
Treatment of Physician's Choice (TPC)38

Reported measurements

DOR by BICR Assessment

Analysis denominator · Participants

GroupSource count
Sacituzumab Govitecan58
Treatment of Physician's Choice (TPC)38
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Sacituzumab Govitecan8.1Not reported6.78.9Not reported
Treatment of Physician's Choice (TPC)5.6Not reported3.87.9Not reported
DOR by LIR Assessment

Analysis denominator · Participants

GroupSource count
Sacituzumab Govitecan45
Treatment of Physician's Choice (TPC)25
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Sacituzumab Govitecan7.0Not reported5.68.9Not reported
Treatment of Physician's Choice (TPC)4.3Not reported4.26.1Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        6.7
        upper Limit
        8.9
        value
        8.1
      2. group Id
        OG001
        lower Limit
        3.8
        upper Limit
        7.9
        value
        5.6
    denoms
    1. counts
      1. group Id
        OG000
        value
        58
      2. group Id
        OG001
        value
        38
      units
      Participants
    title
    DOR by BICR Assessment
  2. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        5.6
        upper Limit
        8.9
        value
        7.0
      2. group Id
        OG001
        lower Limit
        4.2
        upper Limit
        6.1
        value
        4.3
    denoms
    1. counts
      1. group Id
        OG000
        value
        45
      2. group Id
        OG001
        value
        25
      units
      Participants
    title
    DOR by LIR Assessment
denoms
  1. counts
    1. group Id
      OG000
      value
      58
    2. group Id
      OG001
      value
      38
    units
    Participants
description
DOR was defined as the time from the date a response of CR or PR was first documented until the date of the first documentation of disease progression or date of death (whichever occurred first). DOR was analyzed based on both BICR and LIR assessments. CR: Disappearance of all target and non-target lesions; and normalization of tumor marker levels initially above upper limits of normal; PR: ≥30% decrease in the sum of the LD of target lesions, taking as reference the baseline sum LD. Disease progression was defined as an increase of greater than 20% in the sum of the LD of target lesions and a 5 mm absolute increase, taking as a reference the smallest sum LD recorded since the baseline assessment or the appearance of new non-target lesions. DOR was estimated using Kaplan-Meier estimate.
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 with confirmed objective response were analyzed.
reporting Status
POSTED
time Frame
Up to 42.8 months
title
Duration of Response (DOR) by BICR and LIR Assessment
type
SECONDARY
unit Of Measure
months

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Preserved source evidence · Not medical advice