...here we present interim data on the efficacy and safety of pralsetinib in prospectively identified patients with diverse RET fusion–positive tumors....Confirmed tumor responses were observed in all four patients with pancreatic cancer (including one CR), two of three patients with cholangiocarcinoma, two of three patients with sarcoma (including one CR), two of three patients with neuroendocrine cancer and single patients with head and neck cancer and unknown primary tumor (CR).