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NCT03260491PHASE1ACTIVE_NOT_RECRUITING

U3-1402 in Metastatic or Unresectable Non-Small Cell Lung Cancer

A Multicenter, Open-Label Phase 1 Study of U3-1402 in Subjects With Metastatic or Unresectable Non-small Cell Lung Cancer

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
Non-Small Cell Lung Cancer (NSCLC)
Interventions
HER3-DXd (FL-DP), HER3-DXd (CTM-1 Lyo-DP), HER3-DXd (CTM-3 Lyo-DP)
Enrollment
312 participants
Primary completion
Mar 2026
Study completion
Dec 2026
First posted
Aug 2017
Last updated
Mar 2026

Primary Endpoints (CT.gov)

Dose-limiting toxicities (DLTs) during dose escalation

Time frame: 21 days of Cycle 1

Summary of adverse events during dose escalation

Time frame: By the global end of trial date, approximately within 36 months

Overall response rate (ORR) assessed by Blinded Independent Central Review (BICR) Committee during dose expansion (Dose Expansion Cohorts 1, 2, 3a, 3b, and Cohort 5)

Time frame: Approximately within 36 months

Maximum serum concentration (Cmax) of HER3-DXd, total anti-HER3 antibody, and MAAA-1181a during dose expansion (Cohort 4)

Time frame: During the first 5 cycles (each cycle is 21 days), including an intensive sampling schedule: pre-dose, end of infusion (EOI), 2 hour (hr), 4 hr, 8 hr post infusion, Day 8, and Day 15.

Secondary Endpoints

Maximum serum concentration (Cmax) of HER3-DXd, total anti-HER3 antibody, and MAAA-1181a during dose escalation

Time of maximum concentration (Tmax) of HER3-DXd, total anti-HER3 antibody, and MAAA-1181a during dose escalation

Area under the serum concentration-time curve from time 0 to 21 days (AUC[0-21]) and up to last quantifiable time (AUC[last]) of HER3-DXd, total anti-HER3 antibody, and MAAA-1181a during dose escalation

Eligibility Criteria

Inclusion Criteria for both Dose Escalation and Dose Expansion: 1. Has locally advanced or metastatic NSCLC, not amenable to curative surgery or radiation 2. Has at least one measurable lesion per RECIST version 1.1 3. Has Eastern Cooperative Oncology Group performance status of 0 or 1 at Screening Inclusion Criteria for Dose Escalation only: 1. Has histologically or cytologically documented adenocarcinoma NSCLC 2. Has acquired resistance to EGFR TKI according to the Jackman criteria (PMID: 19949011) 1. Historical confirmation that the tumor harbors an epidermal growth factor receptor (EGFR) mutation known to be associated with EGFR tyrosine kinase inhibitor (TKI) sensitivity (including G719X, exon 19 deletion, L858R, L861Q) 2. Has experienced clinical benefit from an EGFR TKI, followed by systemic progression of disease \[Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1\] or World Health Organization (WHO)\] while on continuous treatment with an EGFR TKI 3.

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