Fig. 1

USP44 is involved in the occurrence and development of ccRCC. a Expression of USP44 mRNA of normal kidney tissue and ccRCC according to the results from the TCGA Data Portal. b Expression of USP44 mRNA of normal kidney tissue and ccRCC according to the results from the Gene Expression Omnibus (GEO) database. c Expression of USP44 mRNA in ccRCC cancer tissues at different tumor stages. d Expression of USP44 mRNA in ccRCC cancer tissues at different tumor grades. e Kaplan–Meier curve for ccRCC patients with low and high expression of USP44