Related Experiment Video
Updated: Aug 1, 2025
04:48
Establishing a Severe Corneal Inflammation Model in Rats Based on Corneal Epithelium Curettage Combined with Corneal Sutures
Published on: November 22, 2024
370
Chronic ocular sequelae in Stevens-Johnson syndrome: a genetic association study
Sushil K Sangwan1, Namrata Sharma2, Tushar Agarwal2
1Laboratory of Cyto-Molecular Genetics, Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India.
Molecular Vision
|April 24, 2023
Summary
This study found that specific genetic markers, including interleukin-13 and certain HLA-A alleles, are associated with chronic ocular complications in Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN) patients. Identifying these markers may aid in predicting and managing severe eye conditions.
Area of Science:
- Ophthalmology
- Immunogenetics
- Dermatology
Background:
- Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN) are severe mucocutaneous reactions often leading to chronic ocular sequelae.
- Identifying molecular markers associated with SJS/TEN pathogenesis and complications is crucial for patient management.
Purpose of the Study:
- To investigate the association between specific molecular markers and the development of chronic ocular sequelae in patients with SJS/TEN.
- To explore the role of genetic polymorphisms and apoptotic markers in SJS/TEN-related eye complications.
Main Methods:
- A cohort of 100 SJS/TEN patients were analyzed for clinical histories and ocular severity.
- Peripheral blood samples were screened for interleukin (IL-4, IL-13, IL-4R) polymorphisms, HLA-A alleles, and levels of granulysin and sFas L.
Main Results:
- Significant differences in IL-4R polymorphism, HLA-A*3301, HLA-A*02, HLA-A*2402 alleles, and elevated granulysin/sFas L were observed in SJS/TEN patients versus controls.
- Conjunctival keratinization was associated with IL-13 promoter region (IL-13a) genotypes (p=0.004).
Conclusions:
- Interleukin-13 is potentially associated with the severity of chronic ocular sequelae in SJS/TEN.
- Specific HLA-A alleles (HLA-A*3301, HLA-A*02, HLA-A*2402) may play a role in SJS/TEN causation and manifestation.
- Screening for these genetic markers could help identify patients at risk for severe, lifelong ocular complications.
