||Zoladex (goserelin) is a synthetic analog of lutenizing hormone-releasing hormone, which causes decreased testosterone production in males and decreased estradiol production in females (NCI Drug Dictionary). Zoladex (goserelin) is FDA approved for use in prostate carcinoma (FDA.gov).
||Femara (letrozole) is an aromatase inhibitor, which inhibits estrogen synthesis (NCI Drug Dictionary). Femara (letrozole) is approved for postmenopausal women with hormone receptor positive breast cancer (FDA.gov).
||Kisqali (ribociclib) is a dual CDK4/6 inhibitor, which may induce cell cycle arrest and reduce proliferation in cancer cells (PMID: 24045179). Kisqali (ribociclib) is FDA-approved in combination with an aromatase inhibitor in women with hormone receptor-positive, ERBB2 (HER2)-negative breast cancer, and in combination with Faslodex (fulvestrant) in postmenopausal women with hormone receptor-positive, ERBB2 (HER2)-negative breast cancer (FDA.gov).