The organic acidurias D: -2-hydroxyglutaric aciduria (D-2-HGA), L-2-hydroxyglutaric aciduria (L-2-HGA), and combined D,L-2-hydroxyglutaric aciduria (D,L-2-HGA) cause neurological impairment at young age. Accumulation of D-2-hydroxyglutarate (D-2-HG) and/or L-2-hydroxyglutarate (L-2-HG) in body fluids are the biochemical hallmarks of these disorders. The current review describes the knowledge gathered on 2-hydroxyglutaric acidurias (2-HGA), since the description of the first patients in 1980. We report on the clinical, genetic, enzymatic and metabolic characterization of D-2-HGA type I, D-2-HGA type II, L-2-HGA and D,L-2-HGA, whereas for D-2-HGA type I and type II novel clinical information is presented which was derived from questionnaires.
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http://dx.doi.org/10.1007/s10545-012-9462-5 | DOI Listing |
Virchows Arch
September 2024
Krembil Discovery Tower, Tanz Centre for Research in Neurodegenerative Disease, University of Toronto, 60 Leonard Ave, Toronto, ON, M5T 0S8, Canada.
Childs Nerv Syst
July 2024
Department of Neurosurgery, Offenbach, Hessen, Germany.
Purpose: Several underlying conditions of moyamoya syndrome (MMS) are well established, but so far, D-2-hydroxyglutaric aciduria (D-2-HGA) has not been mentioned. We are the first to describe a case of a patient suffering from D-2-HGA developing MMS.
Methods: The co-occurrence of D-2-HGA and MMS in a patient is reported.
Nat Med
June 2023
INSERM 1170, Université Paris-Saclay, Equipe Labellisée Ligue Nationale Contre le Cancer, member of OPALE Carnot Institute The Organization for Partnerships in Leukemia, Villejuif, France.
D-2-hydroxyglutaric aciduria type II (D2HGA2) is a severe inborn disorder of metabolism caused by heterozygous R140 mutations in the IDH2 (isocitrate dehydrogenase 2) gene. Here we report the results of treatment of two children with D2HGA2, one of whom exhibited severe dilated cardiomyopathy, with the selective mutant IDH2 enzyme inhibitor enasidenib. In both children, enasidenib treatment led to normalization of D-2-hydroxyglutarate (D-2-HG) concentrations in body fluids.
View Article and Find Full Text PDFBiochimie
April 2023
Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil; Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil; Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil. Electronic address:
Accumulation of D-2-hydroxyglutaric acid (D-2-HG) is the biochemical hallmark of D-2-hydroxyglutaric aciduria type I and, particularly, of D-2-hydroxyglutaric aciduria type II (D2HGA2). D2HGA2 is a metabolic inherited disease caused by gain-of-function mutations in the gene isocitrate dehydrogenase 2. It is clinically characterized by neurological abnormalities and a severe cardiomyopathy whose pathogenesis is still poorly established.
View Article and Find Full Text PDFAm J Med Genet A
September 2022
Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia, USA.
D-2-hydroxyglutaric aciduria (D-2-HGA) is a rare neurometabolic disease with two main subtypes, caused by either inactivating variants in D2HGDH (type I) or germline gain of function variants in IDH2 (type II), that result in accumulation of the same toxic metabolite, D-2-hydroxyglutarate. The main clinical features of both are neurologic, including developmental delay, hypotonia, and seizures. Dilated cardiomyopathy is a unique feature thus far only reported in type II.
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