||Piqray (Alpelisib) is a selective PIK3CA inhibitor that blocks activation of the PI3K signaling pathway and inhibits tumor growth (PMID: 23726034). Piqray (Alpelisib) is FDA approved in combination with fulvestrant for use in postmenopausal women, and men, with advanced or metastatic hormone receptor (HR)-positive, ERBB2 (HER2)-negative, PIK3CA-mutant breast cancer (FDA.gov).
Hormone - Anti-estrogens
||Faslodex (fulvestrant) is a competitive inhibitor of estrogen that binds and deforms estrogen receptors, and causes inhibition of growth in cultured estrogen-sensitive breast cancer cells (NCI Drug Dictionary). Faslodex (fulvestrant) is FDA approved for use in patients 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).