Inavolisib (GDC-0077) showed a disease control rate (DCR) of 60% at 8 weeks and 32% at 16 weeks in patients with PIK3CA-mutated advanced solid tumors, with a favorable safety profile. The median progression-free survival was 3.52 months, and the 12-month overall survival rate was 51%. The most common adverse effects were hyperglycemia, diarrhea, fatigue, and constipation, mostly grade 1 or 2.