NUDT1 and gastric cancer: In addition, from OncoLnc (www.oncolnc.org) website, it was found that the stomach adenocarcinoma (STAD) patients with high NUDT1 (MTH1) expression level exhibited a worse overall survival rate than those with low NUDT1 expression (Supplementary Fig. 2C), further indicating the possible negative correlation between MTH1 expression and the GC patients’ survival.