Relay Therapeutics Reports Strong Phase 1/2 Zovegalisib Data, Validating Phase 3 Dose in Breast Cancer
Summary
Relay Therapeutics announced positive Phase 1/2 clinical trial data for its lead drug candidate, zovegalisib, in metastatic breast cancer, supporting the ongoing Phase 3 trial.
Key Events
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Positive Phase 1/2 Zovegalisib Data
Relay Therapeutics announced encouraging Phase 1/2 ReDiscover trial data for zovegalisib in combination with fulvestrant at the recommended Phase 3 dose.
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Strong Efficacy in Heavily Pre-treated Patients
The trial showed a median progression-free survival (PFS) of 11.1 months and an objective response rate (ORR) of 43% (52% in second-line patients) in heavily pre-treated patients with PI3Kα-mutated, HR+/HER2- metastatic breast cancer.
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Favorable Tolerability Profile
The 400mg BID fed dose was generally well tolerated, with a safety profile consistent with previously disclosed data and primarily low-grade, manageable adverse events.
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Validation of Phase 3 Dose
The data supports the selection of the 400mg BID fed regimen for the ongoing pivotal Phase 3 ReDiscover-2 trial, reinforcing confidence in the drug's development.
Analysis
Relay Therapeutics announced positive Phase 1/2 data for zovegalisib, its lead drug candidate, in PI3Kα-mutated, HR+/HER2- metastatic breast cancer. The reported median progression-free survival (PFS) of 11.1 months and objective response rate (ORR) of 43% (52% in second-line patients) are significant for a heavily pre-treated patient population. The favorable tolerability profile, consistent with previous data, further de-risks the program. This data validates the 400mg BID fed dose currently being used in the ongoing pivotal Phase 3 ReDiscover-2 trial, reinforcing confidence in the drug's potential and its Breakthrough Therapy Designation.
At the time of this filing, RLAY was trading at $10.80 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $1.9B. The 52-week trading range was $1.78 to $11.49. This filing was assessed with positive market sentiment and an importance score of 8 out of 10.