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Apolipoprotein E genotypes in pseudoexfoliation syndrome and pseudoexfoliation glaucoma
Mandy Krumbiegel1, Francesca Pasutto, Christian Y Mardin
1Institute of Human Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
This study investigated the association between APOE gene variants and Pseudoexfoliation (PEX) syndrome and PEX glaucoma (PEXG). Findings indicate no significant link between APOE genotypes and PEX or PEXG in German and Italian populations.
Area of Science:
- Ophthalmology
- Genetics
- Gerontology
Background:
- Pseudoexfoliation (PEX) syndrome is an age-related condition with fibrillar deposits in the eye.
- PEX shares features with amyloid disorders, and apolipoprotein E (Apo-E) is implicated in fibril formation.
- APOE gene variants, particularly ε4, are linked to cardiovascular disease and Alzheimer's.
Purpose of the Study:
- To determine if APOE alleles are associated with PEX syndrome or PEX glaucoma (PEXG).
- Investigated this association in large German and Italian cohorts.
Main Methods:
- Genotyping of common APOE alleles (ε2, ε3, ε4) using TaqMan assays.
- Genetic association study conducted on 661 German and 209 Italian individuals (patients with PEX/PEXG and healthy controls).
Main Results:
- The ε3 allele was most frequent (80-83%), and ε2 was rarest (6-9%) in both populations.
- No significant differences in APOE allele or genotype frequencies were observed between patient and control groups in either population.
Conclusions:
- APOE genotypes are not associated with PEX syndrome or PEX glaucoma in the studied German and Italian populations.
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