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Variation in the lymphotoxin-alpha/tumor necrosis factor locus modifies risk of erythema nodosum in sarcoidosis.

Authors: McDougal, KE  Fallin, MD  Moller, DR  Song, Z  Cutler, DJ  Steiner, LL  Cutting, GR   
Citation: McDougal KE, etal., J Invest Dermatol. 2009 Aug;129(8):1921-6. doi: 10.1038/jid.2008.456. Epub 2009 Feb 19.
Pubmed: (View Article at PubMed) PMID:19225544
DOI: Full-text: DOI:10.1038/jid.2008.456

Sarcoidosis is a multi-system inflammatory disease with organ involvement that varies by race and sex. Family studies indicate that genes play a role in the etiology and extent of organ involvement in sarcoidosis. In this study, we evaluated whether 25 variants distributed in 19 genes with a known role in inflammation were associated with erythema nodosum status in 659 sarcoidosis patients and 658 controls from A Case-Control Etiologic Study of Sarcoidosis (ACCESS). We found no association with affectation status; however, a variant in the promoter of tumor necrosis factor (TNF) at position -308 was found to be associated with erythema nodosum in Caucasian sarcoidosis patients (study-wide P=0.027). When separated by sex, a variant in intron 1 of lymphotoxin-alpha (LTA), a gene adjacent to TNF, was associated with erythema nodosum in female Caucasian sarcoidosis patients (study-wide P=0.027). These DNA variants frequently occur together in Caucasians, and each variant has individually been associated with erythema nodosum in sarcoidosis patients. These results confirm that variation in the LTA/TNF gene cluster modifies a major skin manifestation of sarcoidosis and may explain the higher rate of erythema nodosum in females with sarcoidosis.

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RGD Object Information
RGD ID: 8548773
Created: 2014-03-19
Species: All species
Last Modified: 2014-03-19
Status: ACTIVE



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