Study to Assess the Efficacy and Safety of Alpelisib Plus Fulvestrant in Participants With HR-positive (HR+), HER2-negative, Advanced Breast Cancer After Treatment With a CDK4/6 Inhibitor and an Aromatase Inhibitor.

Study Summary

The purpose of this study is to complement Study CBYL719C2301 (SOLAR-1) and obtain more comprehensive data on the efficacy and safety of alpelisib (BYL719) in combination with fulvestrant compared with placebo plus fulvestrant in men or postmenopausal women with HR-positive, HER2-negative advanced breast cancer with a PIK3CA mutation who progressed or relapsed on or after treatment with an AI plus a CDK4/6 inhibitor.

Conditions

Breast Cancer

Interventions / Drugs

Alpelisib Fulvestrant Alpelisib-matching placebo

View on ClinicalTrials.gov ↗

Sponsor

Study Details

Enrollment234 participants

Primary Completion—

Lead SponsorNovartis Pharmaceuticals

Data Retrieved2026-04-11 02:55:49.152699+00:00

Not financial advice. BiotechSigns data is sourced from ClinicalTrials.gov, SEC EDGAR, and other public databases for research and informational purposes only. It does not constitute investment recommendations. Always do your own due diligence before making investment decisions.