Novartis has acquired CoStim Pharmaceuticals Inc., a Cambridge, MA-based, privately held biotechnology company focused on harnessing the immune system to eliminate immune-blocking signals from cancer. The move is intended to broaden Novartis’ cancer immunotherapy research program. Novartis will add late discovery stage immunotherapy programs directed to several targets, including PD-1. Financial terms are not disclosed. “Therapy for many types of cancers are expected to increasingly...