Relay Therapeutics reports positive data for vascular anomaly drug

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Relay Therapeutics Announces Initial Clinical Data Demonstrating That Zovegalisib Has Potential for Differentiated Safety and Efficacy in Patients with PIK3CA-Driven Vascular Anomalies

May 19, 2026 6:00 AM EDT

Promising initial efficacy data with 60% volumetric response rate across doses and 29%* at the lowest tested dose of 100mg twice daily (BID) with all patients ongoing

Interim investigator- and patient-reported outcomes show 89% and 79% of patients achieved clinical improvement at week 12, respectively, and support the potential of zovegalisib to drive clinically meaningful benefit for patients

Evaluation across a wide dose range confirms potential therapeutic window, with interim safety profile supportive of chronic dosing and no patients discontinuing treatment due to adverse events

Expansion cohorts... More