Kaplan–Meier analysis of recurrence-free survival probability showed that TCGA ccRCC patients with primary tumors expressing a high LTF transcript levels exhibited an 85.5% 5-year recurrence-free survival rate, while this rate decreased to 71.8% in ccRCC patients with primary tumors expressing a low level of LTF transcript (Figure 2B). Here, LTF is linked to nonpapillary renal cell carcinoma.