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).
||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).
||Ibrance (palbociclib) is a selective inhibitor of cyclin-dependent kinase 4 (CDK4) and 6 (CDK6) (PMID: 19874578). Ibrance (palbociclib) is approved in combination with an aromatase inhibitor in postmenopausal patients with ER-positive, ERBB2 (HER2)-negative metastatic breast cancer, and in combination with Faslodex (fulvestrant) in patients with ER-positive, ERBB2 (HER2)-negative metastatic breast cancer (FDA.gov).