BOSTON & SOUTH SAN FRANCISCO, Calif.–(BUSINESS WIRE)–Frontier Medicines Corporation, a clinical-stage precision medicines company unlocking the proteome to develop small molecule oncology and immunology drugs against previously undruggable disease-causing targets, today announced promising preliminary clinical data from the ongoing Phase 1 monotherapy portion of its Phase 1/2 PROSPER trial evaluating FMC-376, a KRAS G12C ON+OFF inhibitor, in patients with advanced KRAS G12C-mutant solid tumor