The patient also showed normal levels of tumor markers, including alpha-fetoprotein (AFP: 0.87 ng/ml, normal: ≤7 ng/ml), carcinoembryonic antigen (CEA: 2.09 ng/ml, normal: ≤5.0 ng/ml), and carbohydrate antigen19-9 (CA19-9: 0.90 U/ml, normal: ≤34 U/ml). The gene discussed is AFP; the disease is neoplasm.