WT1 and neoplasm: When the median WT1 expression in tumor tissue was set as the cutoff value to divide patients into high- and low-WT1 expression groups, we observed no statistically significant differences in overall survival (OS) between the two groups using the log-rank test (P = 0.26, Fig. 7A) and the Cox regression test (hazard ratio (HR) = 1.2, P = 0.26, Table 1).