Megaloblastic anemia and mental retardation associated with hyperfolic-acidemia: probably due to N5 methyltetrahydrofolate transferase deficiency.

Adult Aged Anemia, Macrocytic/etiology Biological Assay Blood Proteins/analysis Bone Marrow Examination Cerebral Ventriculography Child Child, Preschool Dietary Fats/metabolism Electroencephalography Erythrocytes/analysis,enzymology FIGLU Test Female Folic Acid/blood,metabolism,therapeutic use Humans Hydrolases/metabolism Infant Intellectual Disability/etiology Intestinal Absorption Liver/enzymology Liver Function Tests Male Metabolism, Inborn Errors/complications Middle Aged Oxidoreductases/metabolism Transferases/metabolism Vitamin B 12/blood Xylose

Blood Proteins Dietary Fats Folic Acid Xylose Oxidoreductases Transferases Hydrolases Vitamin B 12