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Glutaric aciduria type 1: Genetic and phenotypic spectrum in 53 patients.
- Source :
-
European journal of medical genetics [Eur J Med Genet] 2020 Nov; Vol. 63 (11), pp. 104032. Date of Electronic Publication: 2020 Aug 07. - Publication Year :
- 2020
-
Abstract
- Introduction: Glutaric aciduria type 1 (GA1) is a rare and inherited autosomal-recessive metabolic disorder that occurs in the deficiency of glutaryl-co-enzyme A dehydrogenase (GCDH) enzyme encoded by GCDH gene. In this study, we aim to retrospectively investigate the clinical, biochemical, and neuroradiological parameters and examine the spectrum of GCDH gene variants in Turkish patients with glutaric aciduria type 1.<br />Methods: This is a descriptive cross-sectional study. The study was conducted in fifty-three patients from 39 unrelated Turkish families who were diagnosed with GA1 based on their clinical presentation, neuroimaging, and biochemical measurements, at the department of pediatric metabolism of a university hospital between June 1998 and August 2019. Pathogenic variants screening of GCDH gene was performed by direct DNA sequence analysis in forty-six patients with GA1. Pathogenicity of the novel variants was predicted via computational programs.<br />Results: A total of 53 patients were diagnosed with GA1. Of those, 32 (60.3%) had encephalopathic crisis and 33 (62.3%) had macrocephaly. Twenty different pathogenic variants were detected, 7 of which are novel (p.Glu57Lys, p.Ser145Profs*79, p.Ser246Glyfs*96 p.Ala293Val, p.His348Gln, p.His417Tyr, p.Asp418Val). The p.Arg402Trp, p.Pro248Leu and p.Leu340Phe variants were the most common in Turkish patients, with a frequency of 21.2%, 18.2% and 12.1% respectively.<br />Conclusion: This study is the first comprehensive research from Turkey that provides information about disease-causing variants in the GCDH gene. The identification of common variants and hot spot regions of the GCDH gene is important for genetic counselling and the prenatal diagnosis of Turkish patients with GA1.<br /> (Copyright © 2020 Elsevier Masson SAS. All rights reserved.)
- Subjects :
- Adolescent
Adult
Amino Acid Metabolism, Inborn Errors pathology
Brain Diseases, Metabolic pathology
Child
Child, Preschool
Female
Humans
Infant
Male
Middle Aged
Mutation
Amino Acid Metabolism, Inborn Errors genetics
Brain Diseases, Metabolic genetics
Glutaryl-CoA Dehydrogenase deficiency
Glutaryl-CoA Dehydrogenase genetics
Phenotype
Subjects
Details
- Language :
- English
- ISSN :
- 1878-0849
- Volume :
- 63
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- European journal of medical genetics
- Publication Type :
- Academic Journal
- Accession number :
- 32777384
- Full Text :
- https://doi.org/10.1016/j.ejmg.2020.104032