LRFN1 and nonpapillary renal cell carcinoma: Then, survival analysis suggested that higher LRFN1 expression was prominently associated with poor OS for ccRCC patients from CPTAC (P = 0.0066, HR = 5.744; Fig. 3F) and RECA-EU cohorts (P = 0.0422, HR = 2.286; Fig. 3G).