PURPOSE: To study the frequencies of human leukocyte antigen (HLA) spe
cificities in Italian patients with Vogt-Koyanagi-Harada disease and t
o correlate the presence of each specificity to the clinical features.
METHODS: Human leukocyte antigen specificities were determined by sta
ndard microlymphocyto-toxicity assay in 16 patients with Vogt-Koyanagi
-Harada disease and compared with HLA specificities of 116 healthy con
trols, RESULTS: HLA-DR4 was statistically related to Vogt-Koyanagi-Har
ada disease (P = .0063), whereas only a trend toward a significant ass
ociation between the disease and HLA-B41 was found (P = .06). HLA-DQ1
was detected in a disproportionate number of controls (68.9%) compared
with patients (31.5%). CONCLUSIONS: HLA-DR4 was significantly related
to Vogt-Koyanagi-Harada disease in Caucasian European patients, speci
fically in Italian patients, as it was described in other racial group
s. No clear relation was found between the ophthalmologic and systemic
manifestations of Vogt-Koyanagi-Harada disease and the presence of HL
A specificities.