Additionally, we couldn’t notice any significant correlation between CD8 T-lymphocyte infiltration and a high RCN1 level in ccRCC, so we couldn’t confirm the results published by Qixin et al. [21], who discovered an association of RCN1 with Tregs across malignant tumors, including ccRCC. The gene discussed is RCN1; the disease is nonpapillary renal cell carcinoma.