Onchilles Pharma Reports Promising Early Clinical Data for N17350, a Personalized Cancer Vaccine Approach
Onchilles Pharma, a clinical-stage biotechnology company, has reported initial clinical findings from its Phase 1/2 trial (OP-NEU-101) of intratumoral N17350 in patients with advanced solid tumors. The data, presented at the 41st Annual Meeting of the Society for Immunotherapy of Cancer (SITC), suggest that N17350 could effectively turn an injected tumor into a personalized cancer vaccine without requiring tumor sequencing or custom manufacturing. N17350 is an engineered therapeutic elastase derived from a cancer-killing enzyme found in human neutrophils. When injected into a tumor, it selectively kills cancer cells and releases the tumor's own antigens, thereby training the immune system to attack cancer elsewhere in the body. In the first dose cohort, three heavily pretreated patients showed no dose-limiting toxicities. Notably, a patient with Merkel cell carcinoma experienced the disappearance of five non-injected lesions after N17350 was injected into a single lesion, indicating systemic immune activat...