Hormone receptor positive, HER2 negative metastatic breast cancer: Impact of CDK4/6 inhibitors on the current treatment paradigm

Asia Pac J Clin Oncol. 2018 Oct:14 Suppl 4:3-11. doi: 10.1111/ajco.13064.

Abstract

Resistance to endocrine therapy is a significant therapeutic challenge in the treatment of women with hormone receptor positive (HR+), human epidermal growth factor receptor 2 negative (HER2-) advanced breast cancer. Cyclin-dependent kinase (CDK)4/6 inhibitors in combination with endocrine therapy have been shown to improve progression free survival, overall response rate and clinical benefit rate in women with HR+ HER2- metastatic breast cancer compared with endocrine therapy alone. This review examines the clinical evidence to support the use of CDK4/6 inhibitors in first and second line settings. Practical guidance is provided for the use of CDK4/6 inhibitors, including tolerability data, monitoring requirements and management of key toxicities for each of the available agents.

Keywords: CDK4/6 inhibitor; endocrine therapy; metastatic breast cancer.

MeSH terms

  • Breast Neoplasms / genetics*
  • Breast Neoplasms / pathology
  • Cyclin-Dependent Kinase 4 / antagonists & inhibitors*
  • Cyclin-Dependent Kinase 4 / pharmacology
  • Cyclin-Dependent Kinase 4 / therapeutic use*
  • Female
  • Humans
  • Receptor, ErbB-2 / metabolism*

Substances

  • Receptor, ErbB-2
  • CDK4 protein, human
  • Cyclin-Dependent Kinase 4