ERCC1 and osteosarcoma: We found that ERCC1 rs11615 (19007 T>C) gene polymorphism was not associated with overall survival of osteosarcoma (C allele: OR = 0.94, 95% CI: 0.64–1.37, P = 0.74; CC genotype: OR = 1.00, 95% CI: 0.58–1.70, P = 0.99; TT genotype: OR = 1.18, 95% CI: 0.79–1.76, P = 0.41; Figure 3).