Human Immunology, cilt.55, sa.1, ss.59-65, 1997 (SCI-Expanded)
ABSTRACT: The DRB, DQA, and DQB subregions of
the major histocompatibility complex (MHC) were investigated
by polymerase chain reaction and sequence-specific
oligonucleotide probe hybridization (PCR/SSO) in
103 multiple sclerosis (MS) patients and 101 healthy
controls from Turkey. Significant differences were detected
between MS and control populations in the frequencies of
DRB1*1501 [29 vs. 14, p 5 0.02, odds ratio (OR) 5 2.4],
DRB1*04 (35 vs. 18, p 5 0.01, OR 5 2.3), DQB1*0302
(30 vs. 15, p 5 0.02, OR 5 2.3), DQB1*0602 (27 vs. 10,
p 5 0.005, OR 5 3.2), DQB1*0501 (10 vs. 24, p 5 0.01,
OR 5 0.3), DQA1*0101 (16 vs. 31, p 5 0.02, OR 5
0.4), and DQA1*0103 (7 vs. 19, p 5 0.02, OR 5 0.3).
These results confirm the proposed positive association of
the Dw2 (DRB1*1501 DQA1*0102 DQB1*0602) haplotype
with MS in Caucasians in our Turkish population
(25 vs. 8, p 5 0.003, OR 5 3.7). Furthermore, the
“putative” haplotype supposed to be more frequent in the
MS population of Mediterranean countries, namely
DRB1*04 DQA1*03 DQB1*0302, is also associated
with MS in Turkey (29 vs. 12, p 5 0.006, OR 5 2.9).
The presence of two different haplotypic associations in
MS emphasizes the complexity of the genetic susceptibility
to MS in different populations.