Skip to main content
Top
Published in: Acta Neurologica Belgica 3/2019

01-09-2019 | Electroencephalography | Letter to the Editor

Widening phenotypic spectrum of GABBR2 mutation

Authors: Debopam Samanta, Yuri A. Zarate

Published in: Acta Neurologica Belgica | Issue 3/2019

Login to get access

Excerpt

Pathogenic GABAB receptor R2 (GABBR2) mutations were described recently in patients with epileptic encephalopathy and Rett syndrome-like phenotype (Early infantile epileptic encephalopathy 59, MIM#617904) [17]. Here, we report a child with absence epilepsy and mild developmental delay who has a GABBR2 likely pathogenic variant. We further reviewed all electroclinical data of previously published cases to determine the phenotypic spectrum and genotype–phenotype association. …
Literature
1.
go back to reference EuroEPINOMICS-RES Consortium; Epilepsy Phenome/Genome Project; and Epi4K Consortium (2014) De novo mutations in synaptic transmission genes including DNM1cause epileptic encephalopathies. Am J Hum Genet 95:360–370CrossRef EuroEPINOMICS-RES Consortium; Epilepsy Phenome/Genome Project; and Epi4K Consortium (2014) De novo mutations in synaptic transmission genes including DNM1cause epileptic encephalopathies. Am J Hum Genet 95:360–370CrossRef
3.
go back to reference Yoo Y, Jung J, Lee YN et al (2017) GABBR2 mutations determine phenotype in Rett syndrome and epileptic encephalopathy. Ann Neurol 82:466–478CrossRefPubMed Yoo Y, Jung J, Lee YN et al (2017) GABBR2 mutations determine phenotype in Rett syndrome and epileptic encephalopathy. Ann Neurol 82:466–478CrossRefPubMed
4.
go back to reference Lopes F, Barbosa M, Ameur A et al (2016) Identification of novel genetic causes of Rett syndrome-like phenotypes. J Med Genet 53:190–199CrossRefPubMed Lopes F, Barbosa M, Ameur A et al (2016) Identification of novel genetic causes of Rett syndrome-like phenotypes. J Med Genet 53:190–199CrossRefPubMed
5.
go back to reference Vuillaume ML, Jeanne M, Xue L et al (2018) A novel mutation in the transmembrane 6 domain of GABBR2 leads to a Rett-like phenotype. Ann Neurol 83:437–439CrossRefPubMed Vuillaume ML, Jeanne M, Xue L et al (2018) A novel mutation in the transmembrane 6 domain of GABBR2 leads to a Rett-like phenotype. Ann Neurol 83:437–439CrossRefPubMed
6.
go back to reference Study TD. Prevalence and architecture of de novo mutations in developmental disorders. Nature 542(7642):433 Study TD. Prevalence and architecture of de novo mutations in developmental disorders. Nature 542(7642):433
7.
go back to reference Carneiro TN, Krepischi AC, Costa SS et al (2018) Utility of trio-based exome sequencing in the elucidation of the genetic basis of isolated syndromic intellectual disability: illustrative cases. Appl Clin Genet 11:93CrossRefPubMedPubMedCentral Carneiro TN, Krepischi AC, Costa SS et al (2018) Utility of trio-based exome sequencing in the elucidation of the genetic basis of isolated syndromic intellectual disability: illustrative cases. Appl Clin Genet 11:93CrossRefPubMedPubMedCentral
8.
go back to reference Schuler V, Lüscher C, Blanchet C, Klix N, Sansig G, Klebs K, Schmutz M, Heid J, Gentry C, Urban L, Fox A (2001) Epilepsy, hyperalgesia, impaired memory, and loss of pre-and postsynaptic GABAB responses in mice lacking GABAB (1). Neuron 19(1):47–58CrossRef Schuler V, Lüscher C, Blanchet C, Klix N, Sansig G, Klebs K, Schmutz M, Heid J, Gentry C, Urban L, Fox A (2001) Epilepsy, hyperalgesia, impaired memory, and loss of pre-and postsynaptic GABAB responses in mice lacking GABAB (1). Neuron 19(1):47–58CrossRef
9.
go back to reference Benarroch EE. GABAB receptors: structure, functions, and clinical implications. Neurology 78(8):578–584 Benarroch EE. GABAB receptors: structure, functions, and clinical implications. Neurology 78(8):578–584
Metadata
Title
Widening phenotypic spectrum of GABBR2 mutation
Authors
Debopam Samanta
Yuri A. Zarate
Publication date
01-09-2019
Publisher
Springer International Publishing
Published in
Acta Neurologica Belgica / Issue 3/2019
Print ISSN: 0300-9009
Electronic ISSN: 2240-2993
DOI
https://doi.org/10.1007/s13760-019-01088-5

Other articles of this Issue 3/2019

Acta Neurologica Belgica 3/2019 Go to the issue