For example, the editing level on two ubiquitination sites, chr1:110256304 on GSTM5 and chr4:10080600 on WDR1, were significantly different between tumor and para-tumor samples in Bladder Urothelial Carcinoma (BLCA) and Head and Neck squamous cell carcinoma (HNSC), respectively (Fig. 5A). Here, WDR1 is linked to head and neck squamous cell carcinoma.