||Verzenio (abemaciclib) is a dual CDK4/6 inhibitor, which inhibits Rb1 protein phosphorylation and may induce cell cycle arrest and prevent growth in cancer cells (PMID: 24919854). Verzenio (abemaciclib) is FDA approved as a monotherapy and in combination with Faslodex (fulvestrant) in patients with hormone receptor-positive (ESR, PGR) and ERBB2 (HER2) receptor-negative advanced or metastatic 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).
||Xentuzumab (BI 836845) is a monoclonal antibody that binds to IGF-1 and IGF-2 and prevents binding to the IGF receptor (IGF-1R), resulting in decreased IGF-1R signaling (NCI Drug Dictionary).