CYP27B1 and renal cell carcinoma: Genes of fatty acid degradation, ketogenesis (HMGCS2), cholesterol metabolism (CYP7A1, CYP8B1, CYP27B1), steroid hormone synthesis, lipid transport (APOA1, APOA2 and APOA5) and carnitine shuttle were downregulated suggesting altered lipid metabolism in RCC.