Abstract
Human leukocyte antigen-DR typing was performed on 18 unrelated white patients with sterile ulcerative keratitis (SUK) to determine whether these patients share common immunogenetic susceptibility genes. There was no statistically significant increase in any DR allele among the entire group of SUK patients. There was a trend in the frequency of DR1 in the rheumatoid arthritis (RA) patients (5 of 8, 63%) versus the non-RA patients (1 of 10, 10%), which was not statistically significant, possibly due to the small number of patients in the study. Screening patients with RA without known SUK from our RA register revealed one DR1-positive patient with an inactive peripheral marginal melt. These findings suggest a possible relationship between DR1 and RA sterile corneal melting, which will need to be confirmed with a larger study.
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