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NCT04639219 · OUTCOME

Percentage of Participants Alive and Progression-Free at 6 and 12 Months as Per RECIST v1.1 Using ICR and Investigator Assessment

A Study of T-DXd for the Treatment of Solid Tumors Harboring HER2 Activating Mutations · Source last updated 2026-03-23

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
NUMBER
Unit
percentage of participants
Interval / dispersion
95% Confidence Interval
Time frame
At Months 6 and 12

What was measured

Percentage of participants alive and progression-free at 6 and 12 months are reported. It was calculated using the Kaplan-Meier technique. CI for median PFS derived based on the Brookmeyer-Crowley method.

Analysis population: The FAS consisted of all participants who received at least 1 dose of study treatment.

Groups in this outcome

T-DXd

Participants harboring tumors with specific HER2 activating mutations received T-DXd 5.4 mg/kg via IV infusion on Day 1 of each cycle (21 days), every 3 weeks until RECIST v1.1-defined PD, withdrawal of consent, or until any other of the discontinuation criteria was met.

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

Analysis denominator · Participants

GroupSource count
T-DXd102

Reported measurements

PFS rate at 6 months by ICR
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
T-DXd41.4Not reported30.851.6Not reported
PFS rate at 6 months by Investigator assessment
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
T-DXd37.7Not reported28.147.2Not reported
PFS rate at 12 months by ICR
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
T-DXd30.9Not reported20.641.8Not reported
PFS rate at 12 months by Investigator assessment
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
T-DXd26.5Not reported17.236.7Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        30.8
        upper Limit
        51.6
        value
        41.4
    title
    PFS rate at 6 months by ICR
  2. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        28.1
        upper Limit
        47.2
        value
        37.7
    title
    PFS rate at 6 months by Investigator assessment
  3. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        20.6
        upper Limit
        41.8
        value
        30.9
    title
    PFS rate at 12 months by ICR
  4. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        17.2
        upper Limit
        36.7
        value
        26.5
    title
    PFS rate at 12 months by Investigator assessment
denoms
  1. counts
    1. group Id
      OG000
      value
      102
    units
    Participants
description
Percentage of participants alive and progression-free at 6 and 12 months are reported. It was calculated using the Kaplan-Meier technique. CI for median PFS derived based on the Brookmeyer-Crowley method.
dispersion Type
95% Confidence Interval
groups
  1. description
    Participants harboring tumors with specific HER2 activating mutations received T-DXd 5.4 mg/kg via IV infusion on Day 1 of each cycle (21 days), every 3 weeks until RECIST v1.1-defined PD, withdrawal of consent, or until any other of the discontinuation criteria was met.
    id
    OG000
    title
    T-DXd
param Type
NUMBER
population Description
The FAS consisted of all participants who received at least 1 dose of study treatment.
reporting Status
POSTED
time Frame
At Months 6 and 12
title
Percentage of Participants Alive and Progression-Free at 6 and 12 Months as Per RECIST v1.1 Using ICR and Investigator Assessment
type
SECONDARY
unit Of Measure
percentage of participants

Download exact source JSON → · Snapshot ctgov-results-25a395029948b04d52b1253f

Preserved source evidence · Not medical advice