FDA advisory panel backed Replimune's RP1 melanoma data ahead of the agency's August 2 decision despite earlier staff criticism.

FDA staff criticized Replimune's RP1 melanoma drug ahead of an advisory meeting, saying its Phase 2 trial failed to prove efficacy. Shares fell 30%.

Replimune shares fall after FDA briefing documents questioned RP1 trial data for advanced melanoma ahead of a key advisory committee meeting.