XRCC3 and osteosarcoma: X-ray repair cross-complementing 3 (XRCC3) rs861539 under all genetic models except the dominant model, OR 1.47 95% CI = 0.17–12.47, P = 0.03; In subgroup analysis, the test of subgroup differences was significant (p-value < 0.001), indicating that there is a significant effect of race on the estimate with XRCC3 rs861539 significantly associated with osteosarcoma in Asians but not Caucasians.