LAMA4 and nonpapillary renal cell carcinoma: We found that LAMA4+ cells were barely detectable in NT kidney and their expression was limited to the small and medium renal artery walls (Figure 3A), while we observed a significant increase (p < 0.005) of LAMA4 in ccRCC tumor tissue, with a distribution similar to the peritubular capillary network (Figure 3B).