BioNTech mRNA Cancer Trial Misses Goal

BioNTech announced its experimental mRNA cancer immunotherapy failed to meet the primary goal in a mid-to-late-stage trial for head and neck cancer. Shares fell nearly three percent in early trading following the news. The trial will continue to evaluate overall survival as its secondary endpoint.

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BioNTech plant building in Marburg, Germany, May 6, 2026. REUTERS/Faxian Bimmer

BioNTech SE saw its experimental mRNA cancer therapy miss its primary progression-free survival target in an advanced head and neck cancer trial. United States-listed shares fell 3% in early trading following the announcement. The setback tests the limits of combining customized mRNA vaccines with established checkpoint inhibitors.

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