A SUCLG1 mutation in a patient with mitochondrial DNA depletion and congenital anomalies
| Autor: | Hans C. Andersson, Victor Wei Zhang, Lee-Jun C. Wong, Megan Landsverk |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Mitochondrial DNA
SUCLA2 Mitochondrial disease ETC electron transport chain Methylmalonic acidemia Case Report MMA methylmalonic acidemia MCAs multiple congenital anomalies Mitochondrion Biology medicine.disease_cause Endocrinology Genetics medicine Molecular Biology lcsh:QH301-705.5 Exome sequencing Mutation lcsh:R5-920 PEO progressive external ophthalmoplegia mtDNA depletion RC respiratory chain Succinate-CoA ligase SUCL succinate-CoA ligase medicine.disease mtDNA mitochondrial DNA Mitochondria ERT enzyme replacement therapy lcsh:Biology (General) Lactic acidosis lcsh:Medicine (General) |
| Zdroj: | Molecular Genetics and Metabolism Reports, Vol 1, Iss C, Pp 451-454 (2014) Molecular Genetics and Metabolism Reports |
| ISSN: | 2214-4269 |
| Popis: | Defects in two subunits of succinate-CoA ligase encoded by the genes SUCLG1 and SUCLA2 have been identified in mitochondrial DNA (mtDNA) depletion syndromes. Patients generally present with encephalomyopathy and mild methylmalonic acidemia (MMA), however mutations in SUCLG1 normally appear to result in a more severe clinical phenotype. In this report, we describe a patient with fatal infantile lactic acidosis and multiple congenital anomalies (MCAs) including renal and cardiac defects. Molecular studies showed a defective electron transport chain (ETC), mtDNA depletion, and a novel homozygous mutation in the SUCLG1 gene. Although our patient's clinical biochemical phenotype is consistent with a SUCLG1 mutation, it is unclear whether the MCAs observed in our patient are a result of the SUCLG1 mutation or alterations in a second gene. An increasing number of reports have described MCAs associated with mitochondrial disorders and SUCLG1 specifically. Additional studies such as whole exome sequencing will further define whether additional genes are responsible for the observed MCAs. |
| Databáze: | OpenAIRE |
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