While high PROM1 expression was common in esophageal and liver cancers, based on data from Oncomine, R2, and SurvExpress (see Figs. 1a, 4a [viii and xii]), this gene was underexpressed in kidney cancer, according to the analysis of data from the Oncomine and OncoLnc databases (Fig. 1a and Supplementary Fig. S5g). The gene discussed is PROM1; the disease is liver cancer.