PUBLICATION
Two novel EIF2S3 mutations associated with syndromic intellectual disability with severe microcephaly, growth retardation, and epilepsy
- Authors
- Moortgat, S., Désir, J., Benoit, V., Boulanger, S., Pendeville, H., Nassogne, M.C., Lederer, D., Maystadt, I.
- ID
- ZDB-PUB-160623-4
- Date
- 2016
- Source
- American journal of medical genetics. Part A 170(11): 2927-2933 (Journal)
- Registered Authors
- Pendeville-Samain, Hélène
- Keywords
- X-exome sequencing, X-linked intellectual disability, epilepsy, microcephaly, morpholino, zebrafish
- MeSH Terms
-
- Adolescent
- Alleles
- Amino Acid Sequence
- Animals
- Brain/pathology
- Disease Models, Animal
- Epilepsy/diagnosis
- Epilepsy/genetics*
- Eukaryotic Initiation Factor-2/genetics*
- Exome
- Facies
- Female
- Gene Knockdown Techniques
- Genes, X-Linked
- Genetic Association Studies*
- Genotype
- Growth Disorders/diagnosis
- Growth Disorders/genetics*
- High-Throughput Nucleotide Sequencing
- Humans
- Intellectual Disability/diagnosis
- Intellectual Disability/genetics*
- Magnetic Resonance Imaging
- Male
- Microcephaly/diagnosis
- Microcephaly/genetics*
- Mutation*
- Pedigree
- Phenotype
- Syndrome
- Zebrafish
- PubMed
- 27333055 Full text @ Am. J. Med. Genet. A
Citation
Moortgat, S., Désir, J., Benoit, V., Boulanger, S., Pendeville, H., Nassogne, M.C., Lederer, D., Maystadt, I. (2016) Two novel EIF2S3 mutations associated with syndromic intellectual disability with severe microcephaly, growth retardation, and epilepsy. American journal of medical genetics. Part A. 170(11):2927-2933.
Abstract
X-chromosome exome sequencing was performed to identify the genetic cause of syndromic intellectual disability in two unrelated families with suspected X-linked inheritance. In both families, affected males presented with severe intellectual disability, microcephaly, growth retardation, and epilepsy. A missense mutation (c.777T>G p.(Ile259Met)) and a frameshift mutation (c.1394_1397del p.(Ile465Serfs*4)) were identified in the EIF2S3 gene in the hemizygous state in affected patients, and in the heterozygous states female obligate carriers. A missense mutation in EIF2S3, coding for the gamma-subunit of the translation initiation factor eIF2, was reported once in a family presenting with similar clinical features. Morpholino-based knockdown of the zebrafish EIF2S3 ortholog (eif2s3) recapitulates the human microcephaly and short stature phenotype, supporting the pathogenicity of the identified variants. Our data confirm that EIF2S3 mutation is implicated in a rare, but recognizable, form of syndromic intellectual disability.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping