| Autor: |
S, Perrier, L, Gauquelin, M, Tétreault, L T, Tran, N, Webb, M, Srour, J J, Mitchell, C, Brunel-Guitton, J, Majewski, V, Long, S, Keller, M J, Gambello, C, Simons, A, Vanderver, G, Bernard |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Clinical genetics. 93(2) |
| ISSN: |
1399-0004 |
| Popis: |
Deficiencies of mitochondrial respiratory chain complex I frequently result in leukoencephalopathy in young patients, and different mutations in the genes encoding its subunits are still being uncovered. We report 2 patients with cystic leukoencephalopathy and complex I deficiency with recessive mutations in NDUFA2, an accessory subunit of complex I. The first patient was initially diagnosed with a primary systemic carnitine deficiency associated with a homozygous variant in SLC22A5, but also exhibited developmental regression and cystic leukoencephalopathy, and an additional diagnosis of complex I deficiency was suspected. Biochemical analysis confirmed a complex I deficiency, and whole-exome sequencing revealed a homozygous mutation in NDUFA2 (c.134AC, p.Lys45Thr). Review of a biorepository of patients with unsolved genetic leukoencephalopathies who underwent whole-exome or genome sequencing allowed us to identify a second patient with compound heterozygous mutations in NDUFA2 (c.134AC, p.Lys45Thr; c.225del, p.Asn76Metfs*4). Only 1 other patient with mutations in NDUFA2 and a different phenotype (Leigh syndrome) has previously been reported. This is the first report of cystic leukoencephalopathy caused by mutations in NDUFA2. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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