Hormone therapy, also known as endocrine therapy, is a cornerstone in the treatment of hormone receptor-positive (HR+) breast cancer, which constitutes approximately 70% of all breast cancer cases. This therapy is particularly effective for tumors that express estrogen receptors (ER+) and/or progesterone receptors (PR+), as it targets the hormonal pathways that fuel cancer growth. Understanding Hormone Therapy in Breast Cancer What is hormone therapy for breast cancer? Mechanism…