A broader differential diagnosis for chronic cytolysis was pursued, including infections (hepatitis B virus and hepatitis C virus), autoimmune liver disease (normal values of gamma-globulins and immunoglobin G, negative specific autoantibodies titers), Wilson disease (normal ceruloplasmin level), coeliac disease (negative titers of anti-tissue transglutaminase antibodies), and metabolic diseases (Niemann-Pick, Gaucher, Wolman, glicogenoses, and congenital fructose intolerance) (normal liver and spleen sizes, lack of symptoms for age, normal blood glucose, and no reaction to fructose intake). This evidence concerns the gene CP and celiac disease.