FDA grants accelerated approval to camizestrant with a CDK4/6 inhibitor for ESR1-Mutated HR-positive, HER2-negative locally advanced or metastatic breast cancer

https://www.fda.gov/drugs/resources-information-approved-drugs/fda-grants-accelerated-approval-camizestrant-cdk46-inhibitor-esr1-mutated-hr-positive-her2-negative?utm_medium=email&utm_source=govdelivery On September 4, 2026, the Food and Drug Administration granted accelerated approval to camizestrant (Etcamah, AstraZeneca), an estrogen receptor antagonist, in combination with a CDK4/6 inhibitor (abemaciclib, palbociclib, or ribociclib) for adults with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative locally advanced or metastatic breast cancer upon detection of estrogen receptor-1 (ESR1) mutation during aromatase inhibitor and CDK4/6 inhibitor therapy, based on an FDA-authorized test.