GENETICS OF ANTERIOR SEGMENT DYSGENESIS DISORDERS
Identifieur interne : 004F08 ( Main/Merge ); précédent : 004F07; suivant : 004F09GENETICS OF ANTERIOR SEGMENT DYSGENESIS DISORDERS
Auteurs : Linda M. Reis [États-Unis] ; Elena V. Semina [États-Unis]Source :
- Current opinion in ophthalmology [ 1040-8738 ] ; 2011.
Abstract
Anterior segment dysgenesis (ASD) disorders encompass a spectrum of developmental conditions affecting the cornea, iris, and lens and are generally associated with an approximate 50% risk for glaucoma. These conditions are characterized by both autosomal dominant and recessive patterns of inheritance often with incomplete penetrance/variable expressivity. This article summarizes what is known about the genetics of ASD disorders and reviews recent developments.
Mutations in
Although a number of genetic causes have been identified, many ASD conditions are still awaiting genetic elucidation. The majority of characterized ASD genes encode transcription factors, several factors represent extracellular matrix related proteins. All of the involved genes play active roles in ocular development and demonstrate conserved functions across species. The use of novel technologies, such as whole genome sequencing/comparative genomic hybridization, is likely to broaden the mutation spectrums in known genes and assist in the identification of novel causative genes as well as modifiers explaining the phenotypic variability of ASD conditions.
Url:
DOI: 10.1097/ICU.0b013e328349412b
PubMed: 21730847
PubMed Central: 3558283
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<affiliation wicri:level="1"><nlm:aff id="A1">Department of Pediatrics and Children’s Research Institute at the Medical College of Wisconsin and Children’s Hospital of Wisconsin, Milwaukee, WI, USA</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Pediatrics and Children’s Research Institute at the Medical College of Wisconsin and Children’s Hospital of Wisconsin, Milwaukee, WI</wicri:regionArea>
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<author><name sortKey="Semina, Elena V" sort="Semina, Elena V" uniqKey="Semina E" first="Elena V." last="Semina">Elena V. Semina</name>
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<affiliation wicri:level="1"><nlm:aff id="A2">Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI, USA</nlm:aff>
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<front><div type="abstract" xml:lang="en"><sec id="S1"><title>Purpose of review</title>
<p id="P1">Anterior segment dysgenesis (ASD) disorders encompass a spectrum of developmental conditions affecting the cornea, iris, and lens and are generally associated with an approximate 50% risk for glaucoma. These conditions are characterized by both autosomal dominant and recessive patterns of inheritance often with incomplete penetrance/variable expressivity. This article summarizes what is known about the genetics of ASD disorders and reviews recent developments.</p>
</sec>
<sec id="S2"><title>Recent findings</title>
<p id="P2">Mutations in <italic>Collagen 4A1</italic>
(<italic>COL4A1)</italic>
and <italic>Beta-1,3-glucosyltransferase</italic>
(<italic>B3GALTL)</italic>
have been reported in ASD patients. Novel findings in other well-known ocular genes are also presented, among which regulatory region deletions in <italic>PAX6</italic>
and <italic>PITX2</italic>
are most notable.</p>
</sec>
<sec id="S3"><title>Summary</title>
<p id="P3">Although a number of genetic causes have been identified, many ASD conditions are still awaiting genetic elucidation. The majority of characterized ASD genes encode transcription factors, several factors represent extracellular matrix related proteins. All of the involved genes play active roles in ocular development and demonstrate conserved functions across species. The use of novel technologies, such as whole genome sequencing/comparative genomic hybridization, is likely to broaden the mutation spectrums in known genes and assist in the identification of novel causative genes as well as modifiers explaining the phenotypic variability of ASD conditions.</p>
</sec>
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</front>
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