White blood cell, red blood cell, platelet, alanine aminotransferase, aspartate aminotransferase, lactate dehydrogenase, blood lipids, prothrombin time, activated partial thromboplastin time, immunoglobulin, complement, antinuclear antibody, myeloperoxidase, protease 3, and hepatitis B markers were normal (Table 2). The gene discussed is F2; the disease is hepatitis A virus infection.