In addition, the test results for other diseases that can cause acute hepatitis other than viral hepatitis were as follows: Epstein–Barr virus (EBV) viral capsid antigen (VCA) IgM (negative), EBV VCA IgG (negative), EBV deoxyribonucleic acid (DNA) (negative), cytomegalovirus (CMV) IgM (negative), CMV IgG (negative), herpes simplex virus polymerase chain reaction (negative). The gene discussed is CD40LG; the disease is animal viral hepatitis.