About: Homozygous EXOSC3 Mutation c.92G -> C, p.G31A is a Founder Mutation Causing Severe Pontocerebellar Hypoplasia Type 1 Among the Czech Roma     Goto   Sponge   NotDistinct   Permalink

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Description
  • Pontocerebellar hypoplasia type 1 (PCH1) is characterized by cerebellar and anterior horn motor neuron degeneration and loss, signs of spinal muscular atrophy plus. Patients manifest severe perinatal weakness, hypotonia, and respiratory insuffi ciency, causing death frequently before the age of 1 year. Recently, causative mutations in EXOSC3 were reported in a majority of PCH1 patients, but the detailed clinical phenotype caused by EXOSC3 mutations, genotype- phenotype correlations, and prevalent mutations in specifi c ethnic groups is not yet known. Three unrelated Czech Roma patients with PCH1 were investigated clinically, electrophysiologically, neuroradiologically, and neuropathologically (patients 1 and 2). The entire coding region of the EXOSC3 gene, including the adjacent intron sequences, was sequenced in all three patients. The same mutation c.92G -> C, p.G31A in EXOSC3 was found in all three affected patients in homozygous state and in heterozygous state in the parents from two of the families. Haplotype analysis with four fl anking microsatellite markers showed identical haplotype in 9 out of 11 haplotypes carrying the c.92G -> C, p.G31A mutation. Furthermore, four heterozygotes for this mutation were found in anonymous DNA samples from 90 unrelated Roma individuals. All four of these samples shared the same haplotype. No heterozygous sample was found among 120 anonymous DNA samples from Czech non-Roma individuals with no familial relation. It may therefore be concluded that EXOSC3 c.92G -> C, p.G31A mutation is a founder mutation with high prevalence among the Czech Roma causing a similar and particularly severe phenotype of PCH1. These observations from the Czech Roma may have consequences also for other Roma from other countries. PCH1 caused by EXOSC3 founder mutation c.92G -> C, p.G31A extends the list of autosomal recessive disorders rare among the general population but more frequent among Roma at least in the Czech Republic.
  • Pontocerebellar hypoplasia type 1 (PCH1) is characterized by cerebellar and anterior horn motor neuron degeneration and loss, signs of spinal muscular atrophy plus. Patients manifest severe perinatal weakness, hypotonia, and respiratory insuffi ciency, causing death frequently before the age of 1 year. Recently, causative mutations in EXOSC3 were reported in a majority of PCH1 patients, but the detailed clinical phenotype caused by EXOSC3 mutations, genotype- phenotype correlations, and prevalent mutations in specifi c ethnic groups is not yet known. Three unrelated Czech Roma patients with PCH1 were investigated clinically, electrophysiologically, neuroradiologically, and neuropathologically (patients 1 and 2). The entire coding region of the EXOSC3 gene, including the adjacent intron sequences, was sequenced in all three patients. The same mutation c.92G -> C, p.G31A in EXOSC3 was found in all three affected patients in homozygous state and in heterozygous state in the parents from two of the families. Haplotype analysis with four fl anking microsatellite markers showed identical haplotype in 9 out of 11 haplotypes carrying the c.92G -> C, p.G31A mutation. Furthermore, four heterozygotes for this mutation were found in anonymous DNA samples from 90 unrelated Roma individuals. All four of these samples shared the same haplotype. No heterozygous sample was found among 120 anonymous DNA samples from Czech non-Roma individuals with no familial relation. It may therefore be concluded that EXOSC3 c.92G -> C, p.G31A mutation is a founder mutation with high prevalence among the Czech Roma causing a similar and particularly severe phenotype of PCH1. These observations from the Czech Roma may have consequences also for other Roma from other countries. PCH1 caused by EXOSC3 founder mutation c.92G -> C, p.G31A extends the list of autosomal recessive disorders rare among the general population but more frequent among Roma at least in the Czech Republic. (en)
Title
  • Homozygous EXOSC3 Mutation c.92G -> C, p.G31A is a Founder Mutation Causing Severe Pontocerebellar Hypoplasia Type 1 Among the Czech Roma
  • Homozygous EXOSC3 Mutation c.92G -> C, p.G31A is a Founder Mutation Causing Severe Pontocerebellar Hypoplasia Type 1 Among the Czech Roma (en)
skos:prefLabel
  • Homozygous EXOSC3 Mutation c.92G -> C, p.G31A is a Founder Mutation Causing Severe Pontocerebellar Hypoplasia Type 1 Among the Czech Roma
  • Homozygous EXOSC3 Mutation c.92G -> C, p.G31A is a Founder Mutation Causing Severe Pontocerebellar Hypoplasia Type 1 Among the Czech Roma (en)
skos:notation
  • RIV/00216208:11130/13:10196263!RIV14-MZ0-11130___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(NT14348)
http://linked.open...iv/cisloPeriodika
  • 4
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 78006
http://linked.open...ai/riv/idVysledku
  • RIV/00216208:11130/13:10196263
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • spinal muscular atrophies of childhood; Romanies (gypsies); Roma; olivopontocerebellar hypoplasia; pontocerebellar hypoplasia type 1 (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [3EECFACBF54A]
http://linked.open...i/riv/nazevZdroje
  • Journal of Neurogenetics
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 27
http://linked.open...iv/tvurceVysledku
  • Zámečník, Josef
  • Seeman, Pavel
  • Hornofová, Ludmila
  • Haberlová, Jana
  • Mrázková, Lenka
  • Fencl, Filip
  • Hedvičáková, Petra
  • Petrák, Bořivoj
  • Schwabová, Jaroslava
  • Krůtová, Marcela
  • Šafka Brožková, Dana
  • Glombová, Marie
  • Mojžíšová, Mahulena
  • Pavlíčková, Klára
http://linked.open...ain/vavai/riv/wos
  • 000330038700003
issn
  • 0167-7063
number of pages
http://bibframe.org/vocab/doi
  • 10.3109/01677063.2013.814651
http://localhost/t...ganizacniJednotka
  • 11130
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