The US FDA is advising sponsors to carefully consider the appropriateness for developing drugs across tumor types and to work collaboratively on biomarkers in the wake of the groundbreaking approval of Merck & Co. Inc.'s Keytruda for a "tissue-agnostic" indication.
Merck's PD-1 inhibitor Keytruda (pembrolizumab) won accelerated approval in May for any type of solid tumor that are microsatellite-high (MSI-H)...