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Coincidence of two rare neurologic diseases detected by panel next-generation sequencing

Abstract

In a 12-year-old female with early-onset epilepsy (remission), development delay, hyperkinesias and moderate lactic acidosis two independent rare disorders with overlapping phenotypes were detected by panel exome sequencing and confirmed by Sanger sequencing: autosomal dominant infantile epileptic encephalopathy type 42 (previously reported CACNA1A mutation p.Ala713Thr de novo ) and autosomal recessive mitochondrial respiratory chain complex I deficiency (compound heterozygosity for previously reported NDUFB3 mutations p.Trp22Arg and p.Cly70* in NDUFB3 gene). Clinical heterogeneity of NDUFB3 -related disease is discussed.

About the Authors

G. E. Rudenskaya
Research Centre for Medical Genetics
Russian Federation


A. O. Shumarina
Genomed Ltd
Russian Federation


A. V. Antonets
Genomed Ltd
Russian Federation


I. G. Sermyagina
Research Centre for Medical Genetics
Russian Federation


T. D. Krylova
Research Centre for Medical Genetics
Russian Federation


O. A. Shchagina
Research Centre for Medical Genetics
Russian Federation


References

1. Mоller RS, Dahl HA, Helbig I. The contribution of next generation sequencing to epilepsy genetics. Expert Rev Mol Diagn. 2015; 15: 1531-1538.

2. OMIM (On-line Mendelian Inheritance in Man) http://www.ncbi.nlm.nih.gov

3. Allen AS, Berkovic SF, Cossette P et al. Epi4K Consortium; Epilepsy Phenome/Genome Project. De novo mutations in epileptic encephalopathies. Nature 2013; 501: 217-221.

4. Epi4K Consortium. De Novo Mutations in SLC1A2 and CACNA1A are important causes of epileptic encephalopathies Am J Hum Genet. 2016; 99: 287-298.

5. Hino-Fukuyo N, Kikuchi A, Arai-Ichinoi N et al. Genomic analysis identifies candidate pathogenic variants in 9 of 18 patients with unexplained West syndrome. Hum Genet. 2015; 134: 649-658.

6. Fassone E, Rahman S. Complex I deficiency: clinical features, biochemistry and molecular genetics. J Med Genet. 2012; 49: 578-590.

7. Haack TB, Haberberger B, Frisch EM et al. Molecular diagnosis in mitochondrial complex I deficiency using exome sequencing. J Med Genet. 2012; 49: 277-283.

8. Calvo SE, Compton AG, Hershman SG et al. Molecular diagnosis of infantile mitochondrial disease with targeted next-generation sequencing. Sci Transl Med. 2012; 4: 118ra10.

9. Alston CL, Howard C, Olаhovа M et al. A recurrent mitochondrial p.Trp22Arg NDUFB3 variant causes a distinctive facial appearance, short stature and a mild biochemical and clinical phenotype. J Med Genet. 2016; 53(9): 634-641.


Review

For citations:


Rudenskaya G.E., Shumarina A.O., Antonets A.V., Sermyagina I.G., Krylova T.D., Shchagina O.A. Coincidence of two rare neurologic diseases detected by panel next-generation sequencing. Medical Genetics. 2017;16(11):38-41. (In Russ.)

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ISSN 2073-7998 (Print)