RT Journal Article
SR Electronic
T1 Influence of HLA-B*5703 and HLA-B*1403 on Susceptibility to Spondyloarthropathies in the Zambian Population
JF The Journal of Rheumatology
JO J Rheumatol
FD The Journal of Rheumatology
SP 2236
OP 2240
DO 10.3899/jrheum.080395
VO 35
IS 11
A1 DÍAZ-PEÑA, ROBERTO
A1 BLANCO-GELAZ, MIGUEL ANGEL
A1 NJOBVU, PANGANANI
A1 LÓPEZ-VAZQUEZ, ANTONIO
A1 SUÁREZ-ÁLVAREZ, BEATRIZ
A1 LÓPEZ-LARREA, CARLOS
YR 2008
UL http://www.jrheum.org/content/35/11/2236.abstract
AB Objective To analyze the distribution of HLA-B alleles and to investigate their contribution in the susceptibility to spondyloarthropathies (SpA) in a sample population from Zambia, in order to determine a relationship between some HLA-B alleles and development of ankylosing spondylitis (AS), reactive arthritis (ReA), or undifferentiated SpA (uSpA). Methods We selected 72 patients with SpA and found that 46 had uSpA, 23 ReA, and 3AS.We also selected 92 matched controls; 55 of these had human immunodeficiency virus type I (HIV-I) infection. Results We found a significant increase in the rate of uSpA and ReA with features of Reiter’s syndrome (RS) in HIV-positive individuals who carried the HLA-B*5703 allele (pc < 0.0001 and pc < 0.001, respectively). Among the significant new findings identified were the presence of B*1403 in 2 of the 3 AS patients (pc < 0.05, OR 47), confirming previous data in the Togolese population. Conclusion The presence of B*5703 and HIV infection may not affect susceptibility to AS and ReA, but they do show an important influence in uSpA and RS. Our findings confirm that HLA-B* 1403 is the only factor to increase the risk of AS in a sub-Saharan African population, whereas HLA-B27 was virtually absent in patients with AS.