PRDX1 and osteosarcoma: Remarkably, expression level of PRDX1 was found to be the independent predictors for DFS (P = 0.001 in Univariate-analysis and P = 0.006 in multivariate-analysis; Table 2) and OS (P = 0.008 in Univariate-analysis and P = 0.007 in multivariate-analysis; Table 2) in osteosarcoma.