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A nonsense PAX6 mutation in a family with congenital aniridia

Kyoung Hee Han1, Hye Jin Lee2, Il-Soo Ha3

  • 1Department of Pediatrics, Jeju National University School of Medicine, Jeju, Korea.

Korean Journal of Pediatrics
|December 27, 2016
PubMed

Insights

Congenital aniridia, a rare eye condition, is linked to mutations in the PAX6 gene. This study identified a new PAX6 mutation in a family with multiple affected generations, confirming its role in aniridia.

Area of Science:

  • Genetics
  • Ophthalmology
  • Developmental Biology

Background:

  • Congenital aniridia is a rare genetic disorder characterized by severe iris hypoplasia and other ocular abnormalities.
  • Mutations in the paired box gene-6 (PAX6) are a primary cause of congenital aniridia, as PAX6 is crucial for eye development.

Purpose of the Study:

  • To report a familial case of autosomal dominant congenital aniridia.
  • To detail the ophthalmologic findings in affected individuals.
  • To identify the genetic mutation responsible for the condition in this family.

Main Methods:

  • Clinical examination and ophthalmologic assessment of affected family members.
  • Genetic analysis to identify mutations in the PAX6 gene.

Main Results:

  • A family with four members across three generations affected by autosomal dominant congenital aniridia was identified.
  • Detailed ophthalmologic findings were documented for one affected individual.
  • A nonsense mutation (p.Ser122*) in the PAX6 gene was discovered in the affected family members.

Conclusions:

  • The study confirms the critical role of PAX6 gene mutations in the pathogenesis of congenital aniridia.
  • The findings highlight the importance of genetic testing for PAX6 in diagnosing and understanding familial cases of aniridia.

Keywords:
Congenital aniridiaGenePAX6 proteinWAGR syndromeWilms tumor

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