As seen in Table 1, initial investigations, including a full blood count, liver and renal function tests, alpha-fetoprotein (AFP), cancer antigen 19-9 (CA 19-9), erythrocyte sedimentation rate (ESR), antibody screening, purified protein derivative, and Echinococcus serology (to rule out a hydatid cyst), were unremarkable. The gene discussed is AFP; the disease is cancer.