Abstract
Several genetic factors are likely to play a role in the etiology of multiple sclerosis (MS). We used a candidate gene strategy in a study of polymorphic markers within or close to genes encoding cytokines (interferon- γ (IFN- γ), interleukin-2 (IL-2), IL-4, IL-4 receptor (IL-4R), IL-10, transforming growth factor- β1 and - β2) and myelin proteins (2′,3′-cyclic-nucleotide 3′-phosphohydrolase (CNP:ase), myelin associated glycoprotein, oligodendrocyte myelin glycoprotein, proteolipid protein) in 34 Swedish multiplex MS families and in 147 sporadic MS patients and 95 healthy controls. No evidence for linkage was observed in two-point linkage analysis. However, a slightly positive LOD score of 0.88 ( θ=0.01) for IFN- γ was found. Affected pedigree member (APM) analysis indicated a possible linkage with TGF- β2 ( p=0.008) and IL-4R ( p=0.043). None of the cytokine markers were associated with MS in case-control analysis. Our results suggest a possible importance of the TGF- β2, IL-4R and IFN- γ genes in MS.
Published Version
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