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From INSERM UMR 384 et Fédération de Génétique Humaine Auvergne (Drs. Fogli and Boespflug-Tanguy), Faculté de Médecine, Clermont-Ferrand, France; and the Unit of Molecular Medicine (Dr. Bertini) and Division of Metabolic Disorders (Drs. Dionisi-Vici, Deodato, and Bartuli), Bambino Gesu Childrens Hospital, Rome, Italy.
Address correspondence and reprint requests to Dr. Odile Boespflug-Tanguy, INSERM UMR 384, Faculté de Médecine 28, place Henri Dunant BP 38, 63001 Clermont-Ferrand cedex, France; e-mail: Odile.Boespflug{at}inserm.u-clermont1.fr
Childhood ataxia with central hypomyelination (CACH)/vanishing white matter (VWM) leukoencephalopathy is related to mutations in all five genes of the eukaryotic translation initiation factor (eIF2B). In a fatal infantile leukoencephalopathy, which the authors previously classified as a severe variant of CACH/VWM, a new homozygous missense mutation in the EIF2B5 gene was found. Abnormal decrease in blood uric acid and increase of erythrocyte guanosine 5'-diphosphate sugars found in two siblings may contribute to the explanation of this particularly severe condition.
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