HGD/GSTZ1 promotes cell cycle and tumor progression. (A–C) GSEA pathway enrichment analyses of key regulator (HGD, GSTZ1, GOT1, GOT2, SLC2A1, and LDHA) signature in patients with RCC from the TCGA datasets. (D) The overlapping analysis for related genes of cell cycle in RCC patients. The number represents the number of genes shared by different gene sets. (E) The correlation analysis between HGD/GSTZ1/GOT1/GOT2/prognosis and cell cycle related target genes. (F) The cell cycle related key target genes mRNA expression levels between tumor and normal tissues in patients with KIRC in TGCA database.