The only observed exception was for XRCC5 rs1051677 when comparing only rectal cancer patients with controls (codominant model: OR 3.84, 95% CI 1.11–13.31, p = 0.03; recessive model: OR 3.75, 95% CI1.08–12.95, p = 0.04) (Supplementary Table 2). The gene discussed is XRCC5; the disease is rectal cancer.