Cyclin-dependent kinase 4/6 inhibitors in the treatment of advanced oestrogen receptor-positive breast cancer
Abstract
Breast cancer remains the most frequent cancer among women in Poland with malignancies, despite significant improvement in early detection and treatment. In oestrogen receptor-positive breast cancers activation of the CDK4/CDK6/E2F axis is very common, and one of the mechanisms of action of the endocrine therapies is the suppression of CDK4 and CDK6 activity. The inhibition of CDKs is an important target for novel agents. This article concentrates on two CDK4/6 inhibitors, which showed promising efficacy in recently published studies: palbociclib and ribociclib. The phase 3 studies with palbociclib and ribociclib produced practice-changing results, improving the progression-free survival in the first-line setting in ER-positive HER2-negative advanced breast cancer when added to standard endocrine therapy.
Keywords: CDK4/6 inhibitorbreast cancerpalbociclibribociclibabemaciclib