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Related Concept Videos

Diabetic Retinopathy01:27

Diabetic Retinopathy

DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...

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Tear-Derived Exosomal miR-15a as New Diagnostic Tool for Diabetic Retinopathy
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Tear-Derived Exosomal miR-15a as New Diagnostic Tool for Diabetic Retinopathy

Published on: December 30, 2025

Replication analysis for severe diabetic retinopathy.

Michael A Grassi1, Anna Tikhomirov, Sudha Ramalingam

  • 1Section of Ophthalmology and Visual Science, University of Chicago, Chicago, Illinois 60637, USA.

Investigative Ophthalmology & Visual Science
|March 20, 2012
PubMed
Summary
This summary is machine-generated.

This study investigated genetic associations for diabetic retinopathy complications in a new cohort but found no genome-wide significant results. However, it identified potential new genetic markers for future research into this sight-threatening condition.

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Area of Science:

  • Genetics
  • Ophthalmology
  • Endocrinology

Background:

  • Diabetic retinopathy is a leading cause of vision loss in diabetic patients.
  • Genome-wide association studies (GWAS) have identified some genetic predispositions.
  • Replication in independent cohorts is crucial for validating genetic findings.

Purpose of the Study:

  • To replicate top single nucleotide polymorphism (SNP) associations for diabetic retinopathy complications.
  • To investigate genetic loci in an independent cohort from the Wisconsin Epidemiologic Study of Diabetic Retinopathy (WESDR).

Main Methods:

  • Included 469 type 1 diabetic Caucasian subjects from WESDR.
  • Tested 389 SNPs using a custom array.
  • Conducted case-control analysis and a subanalysis excluding end-stage renal disease patients.

Main Results:

  • No genome-wide significant associations were found.
  • Identified potential SNPs for future replication, including rs4865047 near CEP135 and rs1902491 near NPY2R.
  • Top associations had P values of 2.06 × 10(-5) and 2.81 × 10(-5) respectively.

Conclusions:

  • Nominated novel genetic loci potentially associated with severe diabetic retinopathy.
  • Further replication in additional cohorts is necessary to confirm findings.
  • Susceptibility alleles for diabetic retinopathy may have modest effects.