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High myopia caused by a mutation in LEPREL1, encoding prolyl 3-hydroxylase 2
Shikma Mordechai1, Libe Gradstein, Annika Pasanen
1The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev, Ben Gurion University of the Negev, Beer-Sheva Israel.
American Journal of Human Genetics
|September 3, 2011
Summary
A novel mutation in the LEPREL1 gene causes autosomal-recessive high-grade myopia and related eye conditions. This genetic discovery advances understanding of inherited retinal diseases and myopia.
Area of Science:
- Genetics
- Ophthalmology
- Molecular Biology
Background:
- Autosomal-recessive high-grade axial myopia is a severe visual impairment.
- Associated conditions include early-onset cataracts and retinal degeneration.
- Understanding the genetic basis is crucial for diagnosis and potential therapies.
Purpose of the Study:
- To identify the genetic cause of high-grade axial myopia in a consanguineous kindred.
- To investigate the role of the identified gene in ocular development and disease.
Main Methods:
- Genome-wide linkage analysis was performed to map the disease locus.
- Exome sequencing was used to identify mutations within the candidate region.
- Functional studies of the identified mutation in recombinant proteins were conducted.
Main Results:
- A novel mutation (c.1523G>T) in the LEPREL1 gene was identified.
- This mutation segregated with high-grade myopia and associated ocular abnormalities in the kindred.
- The mutation resulted in the inactivation of prolyl 3-hydroxylase 2 (P3H2) protein.
Conclusions:
- Mutations in LEPREL1 cause autosomal-recessive high-grade axial myopia.
- P3H2 is essential for normal ocular development and function.
- This finding expands the spectrum of collagen-related eye diseases.
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