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Association of TIMP2 Gene Variants With Development of Diabetic Retinopathy
Chin-Te Huang1,2, Hsiang-Wen Chien3,4,5,6, Kai Wang3,4,5
1School of Medicine, Chung Shan Medical University, Taichung, Taiwan, R.O.C.
In Vivo (Athens, Greece)
|April 28, 2026
Summary
Genetic variations in the Tissue inhibitor of metalloproteinases 2 (TIMP2) gene, specifically rs16971783, are linked to an increased risk of diabetic retinopathy (DR). This association was primarily observed in patients with proliferative DR.
Area of Science:
- Ophthalmology
- Genetics
- Endocrinology
Background:
- Diabetic retinopathy (DR) is a microvascular complication of diabetes, characterized by abnormal retinal vascular structures.
- Tissue inhibitor of metalloproteinases 2 (TIMP2) plays a crucial role in regulating inflammation and tissue homeostasis.
- Understanding the genetic factors influencing DR risk is essential for early detection and intervention.
Purpose of the Study:
- To investigate the association between variations in the TIMP2 gene and the risk of developing diabetic retinopathy.
- To identify specific single-nucleotide polymorphisms (SNPs) within the TIMP2 gene that may influence DR susceptibility.
Main Methods:
- Genotyping of four TIMP2 SNPs (rs16971783, rs2889529, rs7220980, rs8068674) was performed.
- A cohort study included 672 patients with DR and 919 diabetic controls.
- Statistical analysis was conducted to determine the association between TIMP2 SNPs and DR risk.
Main Results:
- The TIMP2 SNP rs16971783 was significantly associated with an increased risk of DR.
- This association was more pronounced in patients with proliferative DR compared to non-proliferative DR.
- Preliminary data indicated that rs16971783 influences TIMP2 gene expression.
Conclusions:
- Allele-specific expression of the TIMP2 gene may contribute to the pathogenesis and progression of diabetic retinopathy.
- The rs16971783 variant represents a potential genetic marker for DR risk, particularly in its proliferative form.
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