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Enanta Pharmaceuticals Reports Positive Topline Results from its Phase 2b Study of Zelicapavir for the Treatment of Respiratory Syncytial Virus (RSV) in High-Risk Adults

WATERTOWN, Mass., September 29, 2025--Enanta Pharmaceuticals, Inc. (NASDAQ: ENTA), a clinical-stage biotechnology company dedicated to creating small molecule drugs for viral infections and immunological diseases, today announced positive topline data from RSVHR, a Phase 2b, randomized, double-blind, placebo-controlled study to evaluate the efficacy and safety of zelicapavir in outpatient adults with acute RSV infection who are at high risk of complications including the elderly and/or those wit

articleEnanta Pharmaceuticals, Inc.September 29, 202512/company/enanta-pharmaceuticals-inc/news/enanta-pharmaceuticals-reports-positive-topline-103000555
Enanta Pharmaceuticals Reports Positive Topline Results from its Phase 2b Study of Zelicapavir for the Treatment of Respiratory Syncytial Virus (RSV) in High-Risk Adults

About this update from Enanta Pharmaceuticals, Inc.

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More updates from Enanta Pharmaceuticals, Inc.

Enanta PharmaceuticalsRSV infectionantiviral treatmentRSV symptomsresolutionplacebo-controlled studypopulationpatient populationhospitalization rateplaceboefficacy