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‹ Mon · 13 Apr 2026
Standard addition

Genomic Determinants of Response to Alpelisib Plus Fulvestrant in the SOLAR-1 Trial.

Genetic patterns beyond standard testing can predict which hormone-receptor-positive breast cancer patients will respond best to a targeted drug combination.

Comprehensive genomic analysis of the SOLAR-1 trial identified co-mutational signatures that predict response and resistance to alpelisib plus fulvestrant in PIK3CA-mutated breast cancer, refining patient selection beyond standard PIK3CA testing. These findings could improve treatment decision-making in HR+/HER2- advanced breast cancer.

What the study was

Study design
Genomic analysis of randomized controlled trial (SOLAR-1)
Population
PIK3CA-mutated HR+/HER2- advanced breast cancer patients from SOLAR-1 trial
Category
Genomics/Precision Medicine
Maturity
Validated
Journal
Annals of Oncology

Why it surfaced

RCT-based genomic analysis in high-impact journal (Ann Oncol) refining precision medicine for a common cancer; directly informs patient selection.

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