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Mevalonic aciduria is a rare, inborn error of isoprene biosynthesis characterized by severe, periodic attacks of fever and inflammation, developmental delay, ataxia, and dysmorphic features. This autosomal recessive disease is caused by a mutation in the mevalonate kinase gene that severely reduces mevalonate kinase activity. A 3-year-old boy with mevalonic aciduria whose condition had failed to improve with antiinflammatory treatment underwent allogeneic bone marrow transplantation from an HLA-identical sister who was a heterozygous carrier of the mutant gene. We observed sustained remission of febrile attacks and inflammation during a 15-month follow-up period.
Source Information
From Unité d'Immuno-Hématologie et Rhumatologie Pédiatrique (B.N., P.Q., S.B., A.-M.P., M.D., A.F.), Unité de Pédiatrie et Maladies Métaboliques (V.V., P. L.), Laboratoire de Biochimie (D.R.), and Département de Biothérapie (M.C.-C.), Assistance Publique–Hôpitaux de Paris; Hôpital Necker–Enfants Malades, Université René Descartes, and INSERM Unité 768 (B.N., P.Q., A.F.); and Génétique et Physiopathologie des Maladies Inflammatoires Héréditaires, Institut Cochin, Hôpital Cochin (L.C.) — all in Paris; and Service de Biochimie Pédiatrique, Hôpital Debrousse, Lyon, France (M.-O.R.).
Address reprint requests to Dr. Fischer at Service d'Immuno-Hématologie Pédiatrique, Hôpital Necker–Enfant Malades, 149 rue de Sèvres, 75015 Paris, France, or at alain.fischer{at}nck.aphp.fr.
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