Because of the importance of DNA repair process in determining drug sensitivity and resistance, in various cancer types, the role of polymorphisms in DNA repair genes have been explored to explain inter‐individual differences in the treatment response or survival.37, 38 Many studies focused their attention on the role of PARP1 polymorphisms and their relation with increased risk for various cancer types.39, 40 In current literature, exist various scientific works based on the prognostic value of PARP1 expression in human malignancies. Here, PARP1 is linked to cancer.