PLOD1 and nonpapillary renal cell carcinoma: PLOD mRNA levels were significantly elevated in ccRCC compared with normal kidney in multiple datasets totaling 153 clinical specimens and 71 normal kidney samples (referred to as Yusenko [22], Jones [23], Beroukhim [24], Gumz [25], Higgins [26], and Lenburg [27] datasets: Table 1).