Replimune Group IncFDA briefing documents deemed RP1 study non-interpretable, causing 38% stock drop and triggering securities fraud investigation.

Kirby McInerney LLP announced an investigation into Replimune Group Inc. concerning potential violations of federal securities laws. The investigation follows the FDA's release of briefing documents on July 28, 2026, which deemed the single-armed mid-stage study for Replimune's skin cancer drug RP1 as non interpretable, with reviewers stating the assessment confounds interpretation of efficacy results and limits the FDA's ability to verify reported results. On that news, Replimune's stock price fell $3.28, or approximately 38%, to close at $5.35. The law firm is examining whether the company or its senior management engaged in unlawful business practices, and no lawsuit has been filed at this stage.
Replimune Group IncFDA briefing documents deemed RP1 study non-interpretable, causing 38% stock drop and triggering securities fraud investigation.