NDRG1 and neoplasm: Positive methylation of NDRG-1 in tumor tissue was marginally associated with a decreased risk of DFS (HR=0.55; 95% CI: 0.28, 1.05; p = 0.071), while PHLDA-3 methylation in tumor tissue increased the DFS risk (HR=2.21; 95% CI: 0.97, 5.02; p = 0.058).