| TABLE III - 
                        Therapeutic Modalities11,12 | 
                   
                    | Disease 
 | Alerting 
                      sign | 
                   
                    | Glycogen 
                      storage disease type I 
 | Nocturnal 
                      feeding of slowly digested glucose polymer; avoidance of 
                      fructose in severe cases | 
                   
                    | Fructose 
                      -1,6-diphosphatase deficiency 
 | Avoidance 
                      of fructose or sucrose containing food, antibiotic or antipyretic 
                      solutions 
 | 
                   
                    | Glycogen storage disease 
                      type 3 
 | Similar to type 1, experimental 
                      use of alanine to prevent the appearance of cardiomyopathy | 
                   
                    | Galactosemia 
 | Galactose 
                      free milk 
 | 
                   
                    | Maple syrup 
                      urine disease 
 | Branched 
                      chain restricted milk formulas | 
                   
                    | Classic 
                      PKU 
 | Phenylalanine 
                      restricted formulas and food | 
                   
                    | Homocystinuria 
 | Low protein 
                      or methionine restricted diet, betaine, folic acid, aspirin 
                      and in responsive variants, pyridoxine | 
                   
                    | 6-PTS deficient PKU 
 | Tetrahydrobiopterin, 
                      neurotransmitter precursors as DOPA and 5-hydroxytrtyptophan 
                      with carbi-DOPA | 
                   
                    | Non-ketotic 
                      hyperglycinaemia | High doses 
                      of dextrometorphan and sodium benzoate | 
                   
                    | Methylmalonic acidaemia
 | Insoleucine, and valine 
                      restricted diet, and intranasal or IM injections of hydroxycobalamin, 
                      alkalinizing citrate solutions, L-carnitine | 
                   
                    | Propionic acidaemia 
 
 | Isoleucine and valine 
                      restricted diet; avoidance of fasting, L-carnitine, alkalinizing 
                      solutions of citrate | 
                   
                    | Biotinidase deficiency | Biotin | 
                   
                    | Fatty acid oxidation 
                      defects | Frequent high carbohydrate 
                      feedings, L-carnitine |