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Septerna Announces Dosing of the First Participants in Phase 1 Clinical Trial of SEP-631, an Oral Small Molecule MRGPRX2 Negative Allosteric Modulator for the Treatment of Mast Cell-Driven Diseases

SOUTH SAN FRANCISCO, Calif., Aug. 21, 2025 (GLOBE NEWSWIRE) -- Septerna, Inc. (NASDAQ:SEPN), a clinical-stage biotechnology company pioneering a new era of G protein-coupled receptor (GPCR) drug discovery, today