| A Study Evaluating the Efficacy and Safety of Inavolisib Plus CDK4/6 Inhibitor and Letrozole vs Placebo + CDK4/6i and Letrozole in Participants With Endocrine-Sensitive PIK3CA-Mutated, Hormone Receptor-Positive, HER2-Negative Advanced Breast Cancer | Neoplasms by Site, Skin and Connective Tissue Diseases, breast cancer, breast disorder, breast neoplasm, neoplasm, skin disorder | Recruiting | Phase 3 | 2026-10-06 | | NCT06790693 |
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| A Study to Evaluate the Efficacy and Safety of Giredestrant in Combination With Phesgo (Pertuzumab, Trastuzumab, and Hyaluronidase-zzxf) Versus Phesgo in Participants With Locally Advanced or Metastatic Breast Cancer (heredERA Breast Cancer) | Neoplasms by Site, Skin and Connective Tissue Diseases, breast disorder, breast neoplasm, neoplasm, skin disorder | Active, not recruiting | Phase 3 | 2026-10-02 | | NCT05296798 |
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| 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 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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| A Study Evaluating the Efficacy and Safety of Giredestrant Combined With Palbociclib Compared With Letrozole Combined With Palbociclib in Participants With Estrogen Receptor-Positive, HER2-Negative Locally Advanced or Metastatic Breast Cancer (persevERA Breast Cancer) | Neoplasms by Site, Skin and Connective Tissue Diseases, breast disorder, breast neoplasm, neoplasm, skin disorder | Active, not recruiting | Phase 3 | 2026-08-17 | | NCT04546009 |
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