Phase 3 Study Comparing Brenetafusp Plus Nivolumab With Nivolumab Regimens in HLA-A*0201 Positive Adults With Previously Untreated Advanced Melanoma

What this Trial Is About

Researchers are evaluating the combination of brenetafusp IMC-F106C plus nivolumab compared to standard nivolumab regimens in people with previously untreated advanced melanoma who are HLA-A*0201-positive. This phase 3, randomized, controlled study aims to understand how these treatments perform in this specific group. The study focuses on improving progression-free survival and overall outcomes for participants with advanced melanoma. Participants are assigned to one of three groups one group receives a low dose of brenetafusp once weekly for 13 weeks, then every two weeks until Week 51, and every four weeks thereafter, along with nivolumab every four weeks another group receives a high dose of brenetafusp on the same schedule plus nivolumab the third group receives nivolumab alone or nivolumab combined with relatlimab every four weeks. The study includes a dose recommendation phase with changes made in November 2025 based on safety and efficacy data. During the study, participants undergo assessments including tumor measurements per RECIST 1.1, BRAF V600 mutation status evaluation, and performance status scoring. Researchers will monitor progression-free survival up to approximately 45 months, overall survival up to 57 months, and record adverse events, immune responses, and quality of life. The study involves regular dosing and long-term follow-up to evaluate treatment effects and safety.

IMC-F106C Regimen Versus Nivolumab Regimens in Previously Untreated Advanced Melanoma (PRISM-MEL-301)