ERCC1 and breast cancer: The next pooled analysis, which excluded studies that were not consistent with HWE, also suggested that ERCC1 rs11615 was a breast cancer risk factor under the allele model (OR = 1.14, 95% CI = 1.02–1.27, P=0.02), heterozygote model (OR = 1.24, 95% CI = 1.06–1.44, P=0.007) and dominant model (OR = 1.21, 95% CI = 1.05–1.41, P=0.01) (Table 2 and Figure 2).