Carisma Therapeutics (NASDAQ: CARM) announced positive pre-clinical data for its anti-GPC3 in vivo CAR-M therapy for hepatocellular carcinoma (HCC), developed with Moderna. The therapy demonstrated ability to create CAR-M directly in vivo, reprogramming myeloid cells to target GPC3-expressing cancer cells. Pre-clinical results showed specificity for GPC3 tumor antigen with dose-dependent cytotoxicity against GPC3+ tumor cells. In both syngeneic and humanized tumor models, the therapy significantly reduced tumor burden and suppressed liver metastasis. The treatment was well-tolerated in mouse models, showing promise as an off-the-shelf treatment for GPC3+ solid tumors, including HCC.