Genetic determinants of the humoral immune response in MS.

Neurology. Neuroimmunology and Neuroinflammation
Christiane GasperiBernhard Hemmer

Abstract

In this observational study, we investigated the impact of genetic factors at the immunoglobulin heavy chain constant locus on chromosome 14 and the major histocompatibility complex region on intrathecal immunoglobulin G, A, and M levels as well as on B cells and plasmablasts in the CSF and blood of patients with multiple sclerosis (MS). Using regression analyses, we tested genetic variants on chromosome 14 and imputed human leukocyte antigen (HLA) alleles for associations with intrathecal immunoglobulins in 1,279 patients with MS or clinically isolated syndrome and with blood and CSF B cells and plasmablasts in 301 and 348 patients, respectively. The minor alleles of variants on chromosome 14 were associated with higher intrathecal immunoglobulin G levels (β = 0.58 [0.47 to 0.68], lowest adjusted p = 2.32 × 10-23), and lower intrathecal immunoglobulin M (β = -0.56 [-0.67 to -0.46], p = 2.06 × 10-24) and A (β = -0.42 [-0.54 to -0.31], p = 7.48 × 10-11) levels. Alleles from the HLA-B*07:02-DRB1*15:01-DQA1*01:02-DQB1*06:02 haplotype were associated with higher (lowest p = 2.14 × 10-7) and HLA-B*44:02 with lower (β = -0.35 [-0.54 to -0.17], p = 1.38 × 10-2) immunoglobulin G levels. Of interest, different HLA alleles were associate...Continue Reading

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Citations

Jul 3, 2021·Neurology. Neuroimmunology and Neuroinflammation·Miriam SchlüterTania Kümpfel

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Methods Mentioned

BETA
chip
genotyping
flow cytometry

Software Mentioned

Typer Analyzer
R package sandwich
GenomeStudio Genotyping Module
PLINK
R package mediation

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