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N Engl J Med

Imlunestrant with or without Abemaciclib in Advanced Breast Cancer

Jhaveri KL, Neven P, Casalnuovo ML, et al

In this Phase 3, open-label study, patients with ER-positive, HER2-negative advanced breast cancer and ESR1 mutations treated with imlunestrant had significantly longer progression-free survival compared with those who received standard therapy. Treatment with imlunestrant-abemaciclib significantly improved progression-free survival compared with imlunestrant alone, regardless of ESR1-mutation status.

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