IMA402

Taken together, our preclinical studies demonstrate that our novel, next-generation bispecific T cell engager IMA402 could be a promising therapeutic option for PRAME-positive patients. The phase 1 clinical trial designed as basket trial will start recruitment in 2023.

Here, we describe the in-depth characterization of an HLA-A*02:01-presented peptide derived from the cancer germline antigen preferentially expressed antigen in melanoma (PRAME) that opens an avenue of new opportunities for patients with solid cancers which we aim to leverage by two distinct TCR-based therapeutic modalities, TCR-engineered T cells (ACTengine® IMA203) and TCR Bispecifics (TCER® IMA402). Conclusions Here, we demonstrate comprehensive target characterization and validation data supporting the nearly ideal target properties of PRAME that can be exploited for the benefit of patients: PRAME is highly cancer-associated, homogenously expressed, presented at high target density, highly prevalent across many solid cancers and clinically validated, underlining its potential to reach a large cancer patient population. Trial Registration NCT03686124 Ethics Approval The study was approved by the institutional review board/ethics committee as required for each participating site.