In a different research, which included 102 ccRCC and 50 NRT, the lncRNA CYP4A22–2/3 was able to differentiate between ccRCC and NRT with an area under the curve (AUC) of 0.790 (Ellinger et al., 2015). Here, CYP4A22 is linked to nonpapillary renal cell carcinoma.