GSTP1 and ovarian carcinoma: The association between genetic polymorphisms of ERCC1, XRCC1 and GSTP1 with progression free survival (PFS) and overall survival (OS) in patients with epithelial ovarian cancer in varies ethnicities such as American, European or Asian were reported in several studies (Kim et al., 2009; Khrunin et al., 2010; Steffensen et al., 2011; Kang et al., 2013; Li and Li, 2013).