Regeneron Pharmaceuticals Announces Failed Phase 3 Melanoma Trial for Fianlimab Combination Therapy

Regeneron Pharmaceuticals (REGN) shares dropped over 10% after its experimental melanoma therapy combination failed to meet primary endpoints in a late-stage trial. The failure removes an anticipated revenue driver, leading RBC analysts to cut their price target and raise concerns about near-term bearish momentum.

By Wajeeh Khan Mon, May 18, 2026 at 10:44 PM GMT+3 2 min read · Yahoo Finance ·

Regeneron Pharmaceuticals Announces Failed Phase 3 Melanoma Trial for Fianlimab Combination Therapy

Tickers: $MRK $REGN

Topics: biotech immunotherapy melanoma pharmaceuticals stock_impact

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