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Curr Probl Cardiol. 2019 Apr 12:100421. doi: 10.1016/j.cpcardiol.2019.04.001. [Epub ahead of print]

Effects of Breast Cancer Genes 1 and 2 on Cardiovascular Diseases.

Abstract

Carriers of mutations of breast cancer gene 1 and/or 2 (BRCA1/2) have a higher risk of developing breast and ovarian cancers at a relatively young age. Recently, a causative role for BRCA1/2 in cardiovascular diseases has been emerging. In this review, we summarize currently available evidence obtained from studies on animal models and human BRCA1/2 mutation carriers that shows a correlation of BRCA1/2 deficiency with various cardiovascular diseases, including ischemic heart disease, atherosclerosis, and chemotherapy-linked cardiac muscle disorders. We also discuss one of the major mechanisms by which BRCA1/2 protects the heart against oxidative stress, ie mediating the activity of Nrf2 and its downstream targets that govern antioxidant signaling. More research is needed to elucidate whether the carriers of the BRCA1/2 mutations with ovarian and breast cancers have increased susceptibility to chemotherapy-induced cardiac functional impairment.

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