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NCT06172478PHASE2RECRUITING

A Study of HER3-DXd in Subjects With Locally Advanced or Metastatic Solid Tumors

HERTHENA-PanTumor01 (U31402-277): A Phase 2, Multicenter, Multicohort, Open-Label, Proof of Concept Study of Patritumab Deruxtecan (HER3-DXd; U3-1402) in Subjects With Locally Advanced or Metastatic Solid Tumors

Sponsor: Daiichi Sankyo + Merck Sharp & Dohme LLC

No open prediction endpoints

Endpoints are classified and published by ProgramSignal analysts.

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Key Facts

Study type
INTERVENTIONAL
Conditions
Advanced Solid Tumor, Melanoma, Head and Neck Cancer, Gastric Cancer, Ovarian Carcinoma
Interventions
HER3-DXd
Enrollment
740 participants
Primary completion
Sep 2027
Study completion
Oct 2028
First posted
Dec 2023
Last updated
May 2026

Primary Endpoints (CT.gov)

Number of Participants With Objective Response Rate Assessed by Investigator Following HER3-DXd Monotherapy (All Cohorts Except Prostate Cancer Cohort)

Time frame: Baseline up until documented progressive disease, death, lost to follow-up, or withdrawal by the participant, up to approximately 27 months

Proportion of Participants Achieving a ≥50% Decrease in PSA (Prostate Cancer Cohort Only)

Time frame: Baseline, each cycle before infusion (each cycle is 21 days), and end of treatment, up to approximately 27 months

Secondary Endpoints

Overall Number of Participants With Treatment-emergent Adverse Events Following HER3-DXd Monotherapy (All Cohorts)

Duration of Response As Assessed by Investigator Following HER3-DXd Monotherapy (All Cohorts Except Prostate Cancer Cohort)

Clinical Benefit Rate As Assessed by Investigator Following HER3-DXd Monotherapy (All Cohorts Except Prostate Cancer Cohort)

Eligibility Criteria

Inclusion Criteria Participants must meet all of the following criteria to be eligible for enrollment into the study: 1. Sign and date the informed consent form prior to the start of any study-specific qualification procedures. A separate tissue screening consent will be obtained from all subjects to meet the baseline tumor tissue requirement. 2. Participants aged ≥18 years (follow local regulatory requirements if the legal age of consent for study participation is \>18 years old). 3. Has locally advanced unresectable or metastatic disease (not curable by surgery or radiation) as follows: Cutaneous (acral and non-acral) melanoma 1. Histologically or cytologically confirmed cutaneous (acral or non-acral) melanoma 2. Disease progression while on or after having received treatment with ≥1 prior line of anti-programmed cell death protein (PD-1) or anti-programmed death-ligand 1 (PD-L1) based therapy (previous use of other immune checkpoint inhibitors \[ICIs\] \[ie, anti-CTLA4,

Read full criteria on CT.gov →

✦ Analyst Commentary

Expert commentary on why this trial matters and what to watch for.

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Source

Open on ClinicalTrials.gov