KLF6 and nonpapillary renal cell carcinoma: In the 2020 work [59], the authors argue that the lncRNA MIR4435-2HG promoted the progression of ccRCC through the MIR4435-2HG/miR-513a-5p/KLF6 (Krϋppel-like factor 6) axis and state that “KLF6 was dramatically increased in ccRCC”.