platinum 789ALTERNATIF LINK PLATINUM 789. LINK ALTERNATIF. Share link. close button. ?ref=CS2ABAH00AJ&utm_medium=social&utm_source=heylinkKeynote-789. KEYNOTE-789 was a randomized, double-blind phase 3 study. 18 It was desned to evaluate the addition of pembrolizumab to platinum-based chemotherapy in