All
 C18 Nutritional and Metabolic Diseases D009750 +
 C18.452 Metabolic Diseases D008659 +
 C18.452.100 Brain Diseases, Metabolic D001928 +
 C18.452.100.100 Brain Diseases, Metabolic, Inborn D020739 +
 C18.452.100.100.050 Abetalipoproteinemia D000012 
 C18.452.100.100.320 Galactosemias D005693 
 C18.452.100.100.355 Hartnup Disease D006250 
 C18.452.100.100.360 Hepatolenticular Degeneration D006527 
 C18.452.100.100.365 Homocystinuria D006712 
 C18.452.100.100.540 Menkes Kinky Hair Syndrome D007706 
 C18.452.100.100.412 Leigh Disease D007888 
 C18.452.100.100.425 Lesch-Nyhan Syndrome D007926 
 C18.452.100.100.520 Maple Syrup Urine Disease D008375 
 C18.452.100.100.640 Oculocerebrorenal Syndrome D009800 
 C18.452.100.100.687 Phenylketonurias D010661 +
 C18.452.100.100.725 Pyruvate Carboxylase Deficiency Disease D015324 
 C18.452.100.100.750 Pyruvate Dehydrogenase Complex Deficiency Disease D015325 
 C18.452.100.100.535 MELAS Syndrome D017241 
 C18.452.100.100.545 MERRF Syndrome D017243 
 C18.452.100.100.680 Peroxisomal Disorders D018901 +
 C18.452.100.100.435 Lysosomal Storage Diseases, Nervous System D020140 +
 C18.452.100.100.375 Hyperglycinemia, Nonketotic D020158 
 C18.452.100.100.175 Citrullinemia D020159 
 C18.452.100.100.370 Hyperargininemia D020162 
 C18.452.100.100.650 Ornithine Carbamoyltransferase Deficiency Disease D020163 
 C18.452.100.100.162 Carbamoyl-Phosphate Synthase I Deficiency Disease D020165 
 C18.452.100.100.380 Hyperlysinemias D020167 
 C18.452.100.100.875 Tyrosinemias D020176