The immunohistochemical (IHC) profile showed positivity for cytokeratin (CK) and carcinoembryonic antigen (CEA), with negativity for markers typically associated with RCC (e.g., PAX8, CD10) and urothelial carcinoma (e.g., GATA3, uroplakin). The gene discussed is CEACAM5; the disease is renal cell carcinoma.