ERCC4 and cancer: The shapes of the funnel plots seemed symmetrical, and Egger’s test suggested that there was no publication bias for studies of XPF-rs1800067, rs1799801, rs2020955 and rs744154 SNPs’ associations with cancer risk in the current meta-analysis [recessive model: P = 0.445, 0.205, no value (i.e., Only two studies were included when assumed a recessive genetic model, which caused no value for the Egger’s test) and 0.663, respectively].