SLFN11 and non-small cell lung carcinoma: Kaplan–Meier estimates of the cumulative DFI of SLFN11 or APC promoter methylation for NSCLC patients in plasma cfDNA were significantly different in favor of patients with non-methylated (P = 0.048 and P = 0.037, log-rank test, respectively, Fig. 3c, d).