Ye et al. (2006) recruited four case-control studies (Harris et al., 1998; Wang et al., 2003; Sorensen et al., 2004; Yang et al., 2004) to conduct a meta-analysis on the association between GSTP1 rs1138272 and lung cancer risk (Ye et al., 2006). Here, GSTP1 is linked to lung carcinoma.