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Association between genetic variants in the tumour necrosis factor/lymphotoxin α/lymphotoxin β locus and primary Sjogren's syndrome in Scandinavian samples
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper. (Section of Rheumatology)
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Reumatologi. (Section of Rheumatology)ORCID-id: 0000-0001-6715-3704
Vise andre og tillknytning
2012 (engelsk)Inngår i: Annals of the Rheumatic Diseases, ISSN 0003-4967, E-ISSN 1468-2060, Vol. 71, nr 6, s. 981-988Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

OBJECTIVES:

Lymphotoxin β (LTB) has been found to be upregulated in salivary glands of patients with primary Sjögren's syndrome (pSS). An animal model of pSS also showed ablation of the lymphoid organisation and a marked improvement in salivary gland function on blocking the LTB receptor pathway. This study aimed to investigate whether single-nucleotide polymorphisms (SNP) in the lymphotoxin α (LTA)/LTB/tumour necrosis factor (TNF) gene clusters are associated with pSS.

METHODS:

527 pSS patients and 532 controls participated in the study, all of Caucasian origin from Sweden and Norway. 14 SNP markers were genotyped and after quality control filtering, 12 SNP were analysed for their association with pSS using single marker and haplotype tests, and corrected by permutation testing.

RESULTS:

Nine markers showed significant association with pSS at the p=0.05 level. Markers rs1800629 and rs909253 showed the strongest genotype association (p=1.64E-11 and p=4.42E-08, respectively, after correcting for sex and country of origin). When the analysis was conditioned for the effect of rs1800629, only the association with rs909253 remained nominally significant (p=0.027). In haplotype analyses the strongest effect was observed for the haplotype rs909253G_rs1800629A (p=9.14E-17). The associations were mainly due to anti-Ro/SSA and anti-La/SSB antibody-positive pSS.

CONCLUSIONS:

A strong association was found between several SNP in the LTA/LTB/TNFα locus and pSS, some of which led to amino acid changes. These data suggest a role for this locus in the development of pSS. Further studies are needed to examine if the genetic effect described here is independent of the known genetic association between HLA and pSS.

sted, utgiver, år, opplag, sider
2012. Vol. 71, nr 6, s. 981-988
Emneord [en]
pSS, lymphotoxin, salivary gland, Sjogren's syndrome, SNP, gene
HSV kategori
Forskningsprogram
Medicin
Identifikatorer
URN: urn:nbn:se:uu:diva-168668DOI: 10.1136/annrheumdis-2011-200446ISI: 000303756400033PubMedID: 22294627OAI: oai:DiVA.org:uu-168668DiVA, id: diva2:502121
Tilgjengelig fra: 2012-02-14 Laget: 2012-02-14 Sist oppdatert: 2017-12-07bibliografisk kontrollert

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