| 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 | Neoplasms by Site, Skin and Connective Tissue Diseases, breast cancer, breast disorder, breast neoplasm, neoplasm, skin disorder | Recruiting | Phase 3 | 2026-09-28 | | NCT05646862 |
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| A Study to Evaluate the Efficacy and Safety of Inavolisib in Combination With Phesgo Versus Placebo in Combination With Phesgo in Participants With PIK3CA-Mutated HER2-Positive Locally Advanced or Metastatic Breast Cancer | Neoplasms by Site, Skin and Connective Tissue Diseases, breast disorder, breast neoplasm, neoplasm, skin disorder | Recruiting | Phase 3 | 2026-09-21 | | NCT05894239 |
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| A Study to Evaluate Efficacy and Safety of Giredestrant Compared With Fulvestrant (Plus a CDK4/6 Inhibitor), in Participants With ER-Positive, HER2-Negative Advanced Breast Cancer Resistant to Adjuvant Endocrine Therapy (pionERA Breast Cancer) | Estrogen Receptor-Positive, HER2-Negative Advanced Breast Cancer | Active, not recruiting | Phase 3 | 2026-09-14 | | NCT06065748 |
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| A Study Evaluating the Efficacy and Safety of Giredestrant Compared With Physician's Choice of Endocrine Monotherapy in Participants With Previously Treated Estrogen Receptor-Positive, HER2-Negative Locally Advanced or Metastatic Breast Cancer (acelERA Breast Cancer) | Neoplasms by Site, Skin and Connective Tissue Diseases, breast disorder, breast neoplasm, neoplasm, skin disorder | Active, not recruiting | Phase 2 | 2026-09-11 | | NCT04576455 |
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| A Study Evaluating the Efficacy and Safety of Inavolisib + Palbociclib + Fulvestrant vs Placebo + Palbociclib + Fulvestrant in Participants With PIK3CA-Mutant, Hormone Receptor-Positive, HER2-Negative, Locally Advanced or Metastatic Breast Cancer | Neoplasms by Site, Skin and Connective Tissue Diseases, breast cancer, breast disorder, breast neoplasm, neoplasm, skin disorder | Active, not recruiting | Phase 2 / Phase 3 | 2026-09-11 | | NCT04191499 |
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| A Study Evaluating the Efficacy and Safety of Adjuvant Atezolizumab or Placebo and Trastuzumab Emtansine for Participants With HER2-Positive Breast Cancer at High Risk of Recurrence Following Preoperative Therapy | Neoplasms by Site, Skin and Connective Tissue Diseases, breast cancer, breast disorder, breast neoplasm, neoplasm, skin disorder | Active, not recruiting | Phase 3 | 2026-09-03 | | NCT04873362 |
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