In parallel with his respiratory infection, the patient was presenting a perturbation of liver biochemical tests with a cytolysis and anicteric cholestasis the day of his admission (alanine aminotransferase (ALT), 98 IU/L; aspartate aminotransferase (AST), 138 IU/L; gammaglutamyltransferase (GGT), 376 IU/L; total bilirubinemia 23 μmol/L). The gene discussed is GPT; the disease is cholestasis.