Camizestrant in Breast Cancer Meets Primary Endpoint

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AstraZeneca says data from interim analysis of its SERENA-6 Phase 3 trial showed that camizestrant in combination with a cyclin-dependent kinase (CDK) 4/6 inhibitor (palbociclib, ribociclib or abemaciclib) “demonstrated a highly statistically significant and clinically meaningful improvement in the primary endpoint of progression-free survival (PFS)” in certain breast cancer patients. The trial is evaluating the camizestrant combination versus continuing standard-of-care treatment with an aromatase inhibitor (anastrozole or letrozole) in combination with a CDK4/6 inhibitor in first-line treatment of those with hormone receptor (HR)-positive, HER2-negative advanced breast cancer whose tumors have an emergent ESR1 mutation, it says.

Data on key secondary endpoints (time to second disease progression and overall survival) were immature at the cut-off for the interim analysis, AstraZeneca says. The trial will continue as planned to further evaluate these endpoints.

Camizestrant is described by the company as an investigational, potent, next-generation oral selective estrogen receptor degrader and complete estrogen receptor antagonist.

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