This is consistent with our KEGG enrichment analysis findings, suggesting that BPA exposure may influence ccRCC occurrence through immune-related pathways such as the “PD-L1 Expression and PD-1 Checkpoint Pathway in Cancer,” “T Cell Receptor Signaling Pathway,” and “B Cell Receptor Signaling Pathway”. The gene discussed is PDCD1; the disease is nonpapillary renal cell carcinoma.