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Updated: May 2, 2026

Optimization of the Retinal Vein Occlusion Mouse Model to Limit Variability
Published on: August 6, 2021
Thrombophilic mutations as risk factor for retinal vein occlusion: a case-control study
Patrizia Dello Russo1, Giuseppe Damante2, Samantha Pasca3
1Institute of Medical Genetics, University Hospital of Udine, Udine, Italy.
Certain thrombophilic mutations, specifically FII G20210A and MTHFR C677T, are linked to retinal vein occlusion (RVO). However, mutations in FV, ACE, and PAI-1 genes show no significant correlation with RVO risk.
Area of Science:
- Ophthalmology
- Genetics
- Hematology
Background:
- Retinal vein occlusion (RVO) is a leading cause of vision loss.
- The association between thrombophilic mutations and RVO requires further clarification.
Purpose of the Study:
- To investigate the role of specific thrombophilic mutations in the development of RVO.
Main Methods:
- Genotyping for factor V Leiden (FV G1691A), factor II (FII G20210A), MTHFR C677T, PAI-1 4G/5G, and ACE (Del/Ins) in 113 RVO patients and 104 controls.
- Statistical analysis using the 2-tailed chi-square test.
Main Results:
- Significantly higher prevalence of MTHFR C677T (TT genotype) and FII G20210A (GA genotype) mutations in RVO patients compared to controls.
- No statistically significant association found for FV Leiden, ACE, or PAI-1 mutations with RVO.
Conclusions:
- FII G20210A and MTHFR C677T mutations are associated with an increased risk of RVO.
- FV, ACE, and PAI-1 gene mutations do not appear to be significantly correlated with RVO.
- Further large-scale studies are needed to confirm the role of these genetic variants in RVO pathogenesis.
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