+: Positive, -: Negative, CK7: Cytokeratin 7, NA: Not available, MRCP: Magnetic resonance cholangiopancreatography, H&E: Hematoxylin and eosin, HTN: Hypertension, w/: With, WI: Weighted imaging, AFP: Alpha-fetoprotein, CA 19-9: Carbohydrate antigen 19-9, CK19: Cytokeratin 19, CK20: Cytokeratin 20, p53: Tumor protein p53, PAS: Periodic acid-Schiff, w/o: Without, TTF-1: Thyroid transcription factor 1, p63: Tumor protein 63, CEA: Carcinoembryonic antigen, HCC: Hepatocellular carcinoma. The gene discussed is KRT20; the disease is hepatocellular carcinoma.