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NCT04639219 · OUTCOME

Disease Control Rate (DCR) 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
Tumor scans performed at screening, then q6w +/- 1 week relative to the date of first treatment administration until RECIST v1.1 objective PD, withdrawal of consent, or death by any cause, up to DCO date of 25 Jan 2023 (approximately 24 months)

What was measured

DCR at 6 weeks was defined as the percentage of participants who had the best objective response (BoR) of confirmed CR or PR, or who had stable disease (SD) (without subsequent cancer therapy), for at least 5 weeks after first dose of study treatment. DCR at 12 weeks was defined as the percentage of patients who had the BoR of confirmed CR or PR, or who had SD (without subsequent cancer therapy), for at least 11 weeks after first dose of study treatment. CR was defined as disappearance of all TL and PR was defined as at least a 30% decrease in sum of the dms of TL, taking as reference the baseline sum of dms as long as criteria for PD were not met. SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD (\>=20% increase in sum of dms of TLs and an absolute increase of \>=5 millimeters, taking as reference smallest sum of dms since treatment started including baseline sum of dms). CI was calculated using Clopper-Pearson 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

DCR at 6 weeks by ICR
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
T-DXd75.5Not reported66.083.5Not reported
DCR at 6 weeks by Investigator assessment
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
T-DXd70.6Not reported60.779.2Not reported
DCR at 12 weeks by ICR
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
T-DXd53.9Not reported43.863.8Not reported
DCR at 12 weeks by Investigator assessment
Values in percentage of participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
T-DXd55.9Not reported45.765.7Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        66.0
        upper Limit
        83.5
        value
        75.5
    title
    DCR at 6 weeks by ICR
  2. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        60.7
        upper Limit
        79.2
        value
        70.6
    title
    DCR at 6 weeks by Investigator assessment
  3. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        43.8
        upper Limit
        63.8
        value
        53.9
    title
    DCR at 12 weeks by ICR
  4. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        45.7
        upper Limit
        65.7
        value
        55.9
    title
    DCR at 12 weeks by Investigator assessment
denoms
  1. counts
    1. group Id
      OG000
      value
      102
    units
    Participants
description
DCR at 6 weeks was defined as the percentage of participants who had the best objective response (BoR) of confirmed CR or PR, or who had stable disease (SD) (without subsequent cancer therapy), for at least 5 weeks after first dose of study treatment. DCR at 12 weeks was defined as the percentage of patients who had the BoR of confirmed CR or PR, or who had SD (without subsequent cancer therapy), for at least 11 weeks after first dose of study treatment. CR was defined as disappearance of all TL and PR was defined as at least a 30% decrease in sum of the dms of TL, taking as reference the baseline sum of dms as long as criteria for PD were not met. SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD (\>=20% increase in sum of dms of TLs and an absolute increase of \>=5 millimeters, taking as reference smallest sum of dms since treatment started including baseline sum of dms). CI was calculated using Clopper-Pearson 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
Tumor scans performed at screening, then q6w +/- 1 week relative to the date of first treatment administration until RECIST v1.1 objective PD, withdrawal of consent, or death by any cause, up to DCO date of 25 Jan 2023 (approximately 24 months)
title
Disease Control Rate (DCR) 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