September 29, 2026 · High impact · Updated Sep 29, 2026
Merck and Daiichi Sankyo voluntarily withdrew their U.S. application for ifinatamab deruxtecan, a small-cell lung cancer drug, after discussions with the FDA indicated that submitted Phase 2 results did not meet accelerated-approval requirements. This withdrawal raises questions about the drug's future promise despite the setback.
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