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J Interferon Cytokine Res. 2004 Sep;24(9):536-42.

Gender-related association between the TGFB1+869 polymorphism and multiple sclerosis.

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Department of Neurology, VU University Medical Centre, Amsterdam, The Netherlands.


Our objective was to investigate whether polymorphisms and haplotypes in the TGFB1 gene are associated with susceptibility or disease characteristics of multiple sclerosis (MS). In 247 MS patients and 194 controls, single nucleotide polymorphisms (SNPs) at position +869 (Leu10Pro) and position +915 (Arg25Pro) in the signaling sequence of the TGFB1 gene were determined, and the distribution of alleles, genotypes, and haplotypes was related to clinical data. In addition, magnetic resonance imaging (MRI) data were studied in a subgroup of patients (n = 96). The allele distribution of the two polymorphisms studied was in Hardy-Weinberg equilibrium in patients and in controls. No association was found with any of the three haplotypes found in the Dutch population, denoted as haplotype 1 (TGFB1+869T-TGFB1+915G), haplotype 2 (TGFB1+869C-TGFB1+915G), and haplotype 3 (TGFB1+869C-TGFB1+915C). However, the TGFB1+869 genotype CC was significantly more frequent in patients (p = 0.031, chi2 test). The highest frequency of the TGFB1+869 genotype CC was observed in male patients (25.2% vs. 10.0% in controls, p = 0.004, chi2 test), and carriership of TGFB1+869 allele C was correspondingly increased in male patients (74.8% vs. 56.7%, p = 0.008, chi2 test, OR 2.27, 95% CI 1.23-4.17). Although there was no association with clinical markers of disease progression, patients homozygous for TGFB1+869 allele C showed a significantly higher annual increase in two MRI parameters: ventricular fraction (central atrophy) and T1-hypointense lesion load (matrix destruction). The TGFB1 T+869C (Leu10Pro) gene polymorphism is associated with MS susceptibility, especially in males, and with a more destructive course of the disease as illustrated by MRI.

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