A Study Evaluating the Efficacy and Safety of Inavolisib Plus Fulvestrant Compared With Alpelisib Plus Fulvestrant in Participants With HR-Positive, HER2-Negative, PIK3CA Mutated, Locally Advanced or Metastatic Breast Cancer Post CDK4/6i and Endocrine Combination Therapy

Experimental: Inavolisib + Fulvestrant
Participants will be administered the treatments as outlined in the interventions section.
Drug: Inavolisib
Participants will be administered a 9 milligram (mg) inavolisib tablet orally once a day (PO QD) on Days 1-28 of each 28-day cycle.
Drug: Fulvestrant
Participants will be administered 500 mg of fulvestrant on Days 1 and 15 of Cycle 1 and then on Day 1 of each subsequent 28-day cycle.

Source: View full study details on ClinicalTrials.gov

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