A patient death marred Erasca Inc.’s phase I dose-escalation efforts with pan-RAS molecular glue ERAS-0015 in cancer, and shares (NASDAQ:ERAS) ended April 28 at $9.90, down $9.25. ERAS-0015 is being tested in RAS-mutant solid tumors, specifically non-small-cell lung and pancreatic ductal adenocarcinoma.