Study of LOXL1 Gene Variants in Exfoliation Syndrome and Glaucoma
Author Information
Author(s): Aragon-Martin Jose A., Ritch Robert, Liebmann Jeffrey, O’Brien Colm, Blaaow Karima, Mercieca Franco, Spiteri Anthony, Cobb Caroline J., Damji Karim F., Tarkkanen Ahti, Rezaie Tayebeh, Child Anne H., Sarfarazi Mansoor
Primary Institution: Molecular Ophthalmic Genetics Laboratory, University of Connecticut Health Center
Hypothesis
To evaluate genetic susceptibility of LOXL1 gene polymorphisms to exfoliation syndrome and exfoliation glaucoma in a case-control cohort of American and European patients.
Conclusion
The study confirmed a strong association between LOXL1 variants and exfoliation syndrome and glaucoma in American and European populations.
Supporting Evidence
- The GGT haplotype is overrepresented by 66% in exfoliation cases.
- The GAC haplotype is significantly underrepresented by 83% in exfoliation cases.
- Allelic association for rs1048661, rs3825942, and rs2165241 were highly significant.
- DNA sequencing of 95 affected patients did not show any mutations in the LOXL1 gene.
Takeaway
This study looked at a gene that might make people more likely to get a certain eye problem called exfoliation syndrome, which can lead to glaucoma. They found that some gene changes are linked to this condition.
Methodology
DNA from 620 individuals, including 287 exfoliation patients and 333 healthy controls, was extracted and analyzed for three SNPs using SNaPshot Assay and direct sequencing.
Limitations
The study did not identify any disease-causing mutations in the LOXL1 gene despite observing several variations.
Participant Demographics
The study included 287 exfoliation patients (171 American and 116 European) and 333 healthy controls, primarily of European ancestry.
Statistical Information
P-Value
p=1.93x10−24
Statistical Significance
p<0.05
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