Association between Serum 25-hydroxy Vitamin D Concentration and Vitamin D Receptor Gene Polymorphism among Jordanian Females with Breast Cancer.

Background: Breast cancer is the most common type of cancer among females. Genetic polymorphisms might have a role in carcinogenesis. The aim of this study was to determine whether C to T base substitution within TaqI Vitamin D receptor (VDR) gene (rs731236) in exon 9 was a risk factor among patients with breast cancer.