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2017 ; 7
(1
): 5088
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
A genome-wide association study suggests the HLA Class II region as the major
susceptibility locus for IgA vasculitis
#MMPMID28698626
López-Mejías R
; Carmona FD
; Castañeda S
; Genre F
; Remuzgo-Martínez S
; Sevilla-Perez B
; Ortego-Centeno N
; Llorca J
; Ubilla B
; Mijares V
; Pina T
; Miranda-Filloy JA
; Navas Parejo A
; de Argila D
; Aragües M
; Rubio E
; Luque ML
; Blanco-Madrigal JM
; Galíndez-Aguirregoikoa E
; Jayne D
; Blanco R
; Martín J
; González-Gay MA
Sci Rep
2017[Jul]; 7
(1
): 5088
PMID28698626
show ga
The genetic component of Immunoglobulin-A (IgA) vasculitis is still far to be
elucidated. To increase the current knowledge on the genetic component of this
vasculitis we performed the first genome-wide association study (GWAS) on this
condition. 308 IgA vasculitis patients and 1,018 healthy controls from Spain were
genotyped by Illumina HumanCore BeadChips. Imputation of GWAS data was performed
using the 1000 Genomes Project Phase III dataset as reference panel. After
quality control filters and GWAS imputation, 285 patients and 1,006 controls
remained in the datasets and were included in further analysis. Additionally, the
human leukocyte antigen (HLA) region was comprehensively studied by imputing
classical alleles and polymorphic amino acid positions. A linkage disequilibrium
block of polymorphisms located in the HLA class II region surpassed the
genome-wide level of significance (OR?=?0.56, 95% CI?=?0.46-0.68). Although no
polymorphic amino acid positions were associated at the genome-wide level of
significance, P-values of potential relevance were observed for the positions 13
and 11 of HLA-DRB1 (P?=?6.67E-05, P?=?1.88E-05, respectively). Outside the HLA,
potential associations were detected, but none of them were close to the
statistical significance. In conclusion, our study suggests that IgA vasculitis
is an archetypal HLA class II disease.
|*Genetic Loci
[MESH]
|*Genetic Predisposition to Disease
[MESH]
|*Genome-Wide Association Study
[MESH]
|Histocompatibility Antigens Class II/*genetics
[MESH]