PMID- 20854863 OWN - NLM STAT- MEDLINE DCOM- 20110316 LR - 20221207 IS - 1879-1166 (Electronic) IS - 0198-8859 (Linking) VI - 71 IP - 12 DP - 2010 Dec TI - Characterization of tumor necrosis factor-alpha block haplotypes associated with susceptibility to chronic venous leg ulcers in Caucasian patients. PG - 1214-9 LID - 10.1016/j.humimm.2010.09.001 [doi] AB - Polymorphisms in the central major histocompatibility complex (MHC) are associated with several immunopathologic and inflammatory diseases, including chronic venous leg ulcers (CVLU). Because of strong linkage disequilibrium, identification of loci affecting disease susceptibility must be based on comparisons between haplotypes. Here we examine the association of conserved tumor necrosis factor (TNF) block haplotypes with CVLU susceptibility. A total of 171 Caucasian patients with CVLU were compared with 173 age-/gender-matched controls, excluding individuals with type 1 diabetes or rheumatoid arthritis. A total of 194 healthy subjects formed a separate population-based control group. Samples were typed for 38 tumor necrosis factor (TNF) block single nucleotide polymorphisms (SNP), human leukocyte antigen (HLA)-B and HLA-DRB1 alleles. TNF haplotypes were derived using the PHASE algorithm and assigned numbers (FVx) defined previously. The patients and matched controls shared 16 TNF block haplotypes. The patients had increased carriage of FV16 and alleles of the 8.1 and 60.3 MHC ancestral haplotypes (AH). CVLU risk is modulated by alleles within FV16 (e.g., TNF-308A and BAT1intron10 C insertion) or near FV16 in the 8.1AH. CVLU risk may also be mediated by unidentified alleles (not in FV22) marked by HLA-B40 and HLA-DR13. FV16 appears to be the best MHC and TNF block marker of susceptibility. After disease onset, an individual's TNF block haplotype does not modulate CVLU severity. CI - Copyright (c) 2010 American Society for Histocompatibility and Immunogenetics. Published by Elsevier Inc. All rights reserved. FAU - Tan, Joo-Huang AU - Tan JH AD - School of Pathology and Laboratory Medicine, University of Western Australia, Perth, Australia. FAU - Price, Patricia AU - Price P FAU - Gut, Ivo AU - Gut I FAU - Stacey, Michael C AU - Stacey MC FAU - Warrington, Nicole M AU - Warrington NM FAU - Wallace, Hilary J AU - Wallace HJ LA - eng PT - Journal Article DEP - 20100918 PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Aged MH - Aged, 80 and over MH - Alleles MH - Chronic Disease MH - *Disease Susceptibility MH - Female MH - Gene Frequency MH - Haplotypes/*genetics MH - Humans MH - Male MH - Middle Aged MH - Polymorphism, Single Nucleotide MH - Tumor Necrosis Factor-alpha/*genetics MH - Varicose Ulcer/*genetics MH - White People/*genetics EDAT- 2010/09/22 06:00 MHDA- 2011/03/17 06:00 CRDT- 2010/09/22 06:00 PHST- 2009/12/20 00:00 [received] PHST- 2010/08/30 00:00 [revised] PHST- 2010/08/09 00:00 [accepted] PHST- 2010/09/22 06:00 [entrez] PHST- 2010/09/22 06:00 [pubmed] PHST- 2011/03/17 06:00 [medline] AID - S0198-8859(10)00494-5 [pii] AID - 10.1016/j.humimm.2010.09.001 [doi] PST - ppublish SO - Hum Immunol. 2010 Dec;71(12):1214-9. doi: 10.1016/j.humimm.2010.09.001. Epub 2010 Sep 18.