Single nucleotide polymorphism of TAG-1 influences IVIg responsiveness of Japanese patients with CIDP
Copyright policy )Single nucleotide polymorphism of TAG-1 influences IVIg responsiveness of Japanese patients with CIDP
Chronic inflammatory demyelinating polyneuropathy (CIDP) is characterized by immune-mediated peripheral demyelination. Although corticosteroid, IV immunoglobulin (IVIg) and plasma exchange have been established as the most effective therapeutics, subpopulations of patients show little or no response to either of these therapies. In this study, we examined whether particular genetic factors influence the therapeutic responsiveness of patients with CIDP.One hundred Japanese patients categorized as responders or nonresponders to IVIg therapy participated in our study. We performed an association analysis with single nucleotide polymorphisms (SNPs) and haplotype studies between the IVIg responders and nonresponders.Two separate SNPs, corresponding to TAG-1 (transient axonal glycoprotein 1) and CLEC10A (C-type lectin domain family 10, member A), showed strong significant differences between responders and nonresponders. Haplotype analysis of a series of expanded SNPs, from TAG-1 or CLEC10A, showed that only TAG-1 included a significant haplotype within 1 linkage disequilibrium block, which accommodates IVIg responsiveness. Diplotype analysis of TAG-1 also supported this observation.Transient axonal glycoprotein 1 is a crucial molecule involved in IV immunoglobulin responsiveness in Japanese patients with chronic inflammatory demyelinating polyneuropathy.
Adult, Aged, 80 and over, Male, Cell Adhesion Molecules, Neuronal, Immunoglobulins, Intravenous, Sequence Analysis, DNA, Middle Aged, Polymorphism, Single Nucleotide, Severity of Illness Index, Linkage Disequilibrium, Treatment Outcome, Haplotypes, Japan, Polyradiculoneuropathy, Chronic Inflammatory Demyelinating, Contactin 2, Humans, Immunologic Factors, Female, Lectins, C-Type, Aged
Adult, Aged, 80 and over, Male, Cell Adhesion Molecules, Neuronal, Immunoglobulins, Intravenous, Sequence Analysis, DNA, Middle Aged, Polymorphism, Single Nucleotide, Severity of Illness Index, Linkage Disequilibrium, Treatment Outcome, Haplotypes, Japan, Polyradiculoneuropathy, Chronic Inflammatory Demyelinating, Contactin 2, Humans, Immunologic Factors, Female, Lectins, C-Type, Aged
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