List of abbreviations: ASA (American Society of Anesthesiologists classification), T2DM (Type 2 Diabetes Mellitus), HTN (Hypertension), CAD (Coronary Artery Disease), AFP (alpha fetoprotein), CA19 to 9 (Carbohydrate Antigen 19-9 tumour marker), ERCP (Endoscopic Retrograde Cholangiopancreatography Procedure), CT (Computerized Tomography), MRI (Magnetic Resonance Imaging), CBD (Common Bile Duct), SMA (Superior Mesenteric Artery), and SMV (Superior Mesenteric Vein). The gene discussed is AFP; the disease is neoplasm.