The MHG model = 20 × the VICT2 trait (present, 1; absent, 0) + 9 × serum AFP (> 100 ng/mL, 1; ≤ 100 ng/mL, 0) + 7 × tumor growth subtype (non-simple nodular type, 1; simple nodular type, 0). The gene discussed is AFP; the disease is neoplasm.