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Novel mutation in FOXC1 wing region causing Axenfeld-Rieger anomaly
Shirly G Panicker1, Srirangan Sampath, Anil K Mandal
1Prof. Brien Holden Eye Research Centre, Hyderabad Eye Research Foundation, L. V. Prasad Eye Institute, India. shirly@lvpeye.stph.net
Investigative Ophthalmology & Visual Science
|November 28, 2002
Summary
A novel mutation in the FOXC1 gene
Area of Science:
- Ophthalmology
- Genetics
- Molecular Biology
Background:
- Axenfeld-Rieger anomaly (ARA) is a group of genetic disorders affecting eye development.
- Understanding the genetic basis of ARA is crucial for diagnosis and treatment.
Purpose of the Study:
- To identify the molecular genetic defect causing Axenfeld-Rieger anomaly (ARA) in an Indian family.
- To pinpoint the specific mutation in the FOXC1 gene responsible for anterior segment dysgenesis.
Main Methods:
- Genomic DNA from affected and control individuals was analyzed.
- The FOXC1 gene was amplified using novel primers and sequenced.
- Sequence analysis identified the disease-causing mutation.
Main Results:
- A new heterozygous missense mutation in the FOXC1 gene was found in all affected family members.
- This mutation, located in the conserved wing region of the forkhead domain, segregated with the severe phenotype.
- The mutation was fully penetrant and led to blindness in the affected individuals.
Conclusions:
- This study demonstrates that FOXC1 gene mutations, particularly in the wing region, can cause anterior segment dysgenesis and blindness.
- The findings highlight the critical role of the FOXC1 wing region in eye development.
- This research is the first from India to report the genetic cause of Axenfeld-Rieger anomaly, emphasizing genotype-phenotype correlations for prognosis.