TF and nonpapillary renal cell carcinoma: It used LASSO and Cox models to select prognostic MMRGs for model building, created a nomogram (based on independent factors) in TCGA-KIRC (evaluated via calibration and ROC curves), and conducted GSEA, immune cell correlation analyses, TF-miRNA-mRNA network studies, qRT-PCR (ccRCC vs. controls), and WB (RIPA) for biomarker validation.