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NCT04639219 · OUTCOME

PFS 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
MEDIAN
Unit
months
Interval / dispersion
95% Confidence Interval
Time frame
Tumor scans performed at screening, then q6w +/- 1 week relative to the date of first treatment administration until RECIST v1.1 objective PD or death by any cause, up to DCO date of 25 Jan 2023 (approximately 24 months)

What was measured

PFS was defined as the time from first dose of study treatment until the date of objective disease progression or death (by any cause in the absence of progression) regardless of whether the participant withdrew from assigned therapy or received another anti-cancer therapy prior to progression (i.e. date of PFS event or censoring - date of first dose + 1). PFS 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 by ICR
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
T-DXd5.4Not reported2.77.1Not reported
PFS by Investigator assessment
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
T-DXd4.4Not reported2.85.6Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        2.7
        upper Limit
        7.1
        value
        5.4
    title
    PFS by ICR
  2. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        2.8
        upper Limit
        5.6
        value
        4.4
    title
    PFS by Investigator assessment
denoms
  1. counts
    1. group Id
      OG000
      value
      102
    units
    Participants
description
PFS was defined as the time from first dose of study treatment until the date of objective disease progression or death (by any cause in the absence of progression) regardless of whether the participant withdrew from assigned therapy or received another anti-cancer therapy prior to progression (i.e. date of PFS event or censoring - date of first dose + 1). PFS 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
MEDIAN
population Description
The FAS consisted of all participants who received at least 1 dose of study treatment.
reporting Status
POSTED
time Frame
Tumor scans performed at screening, then q6w +/- 1 week relative to the date of first treatment administration until RECIST v1.1 objective PD or death by any cause, up to DCO date of 25 Jan 2023 (approximately 24 months)
title
PFS as Per RECIST v1.1 Using ICR and Investigator Assessment
type
SECONDARY
unit Of Measure
months

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

Preserved source evidence · Not medical advice