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‹ Wed · 22 Jul 2026
Novel or significantly improved treatment

Phase 1/2 study of IMC-C103C, a T cell receptor bispecific (MAGE-A4xCD3) ImmTAC targeting MAGE-A4 in solid tumors

A new T cell therapy shows promise against multiple solid tumors by redirecting immune cells to target a hidden cancer protein.

This Phase 1/2 trial reports the first-in-human evaluation of IMC-C103C, a bispecific ImmTAC molecule that redirects T cells against MAGE-A4-positive cancer cells in HLA-A*02:01-positive patients with advanced solid tumors. The trial establishes proof-of-concept for T cell receptor-based immunotherapy targeting an intracellular cancer-testis antigen, with activity observed across multiple tumor types.

What the study was

Study design
Phase 1/2 Clinical Trial (first-in-human dose escalation and expansion)
Population
Adult patients with advanced HLA-A*02:01-positive solid tumors expressing MAGE-A4
Category
Treatment Innovation
Maturity
Exploratory
Journal
Journal for immunotherapy of cancer

Why it surfaced

First-in-human Phase 1/2 of a novel ImmTAC bispecific (MAGE-A4xCD3) in refractory solid tumors; addresses major unmet need with a first-in-class mechanism targeting intracellular cancer-testis antigen.

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