PMID- 19295542 OWN - NLM STAT- MEDLINE DCOM- 20090828 LR - 20090603 IS - 1476-5470 (Electronic) IS - 1466-4879 (Linking) VI - 10 IP - 4 DP - 2009 Jun TI - Reproducible association with type 1 diabetes in the extended class I region of the major histocompatibility complex. PG - 323-33 LID - 10.1038/gene.2009.13 [doi] AB - The high-risk human leukocyte antigen (HLA)-DRB1, DQA1 and DQB1 alleles cannot explain the entire type 1 diabetes (T1D) association observed within the extended major histocompatibility complex. We have earlier identified an association with D6S2223, located 2.3 Mb telomeric of HLA-A, on the DRB1(*)03-DQA1(*)0501-DQB1(*)0201 haplotype, and this study aimed to fine-map the associated region also on the DRB1(*)0401-DQA1(*)03-DQB1(*)0302 haplotype, characterized by less extensive linkage disequilibrium. To exclude associations secondary to DRB1-DQA1-DQB1 haplotypes, 205 families with at least one parent homozygous for these loci, were genotyped for 137 polymorphisms. We found novel associations on the DRB1(*)0401-DQA1(*)03-DQB1(*)0302 haplotypic background with eight single nucleotide polymorphisms (SNPs) located within or near the PRSS16 gene. In addition, association at the butyrophilin (BTN)-gene cluster, particularly the BTN3A2 gene, was observed by multilocus analyses. We replicated the associations with SNPs in the PRSS16 region and, albeit weaker, to the BTN3A2 region, in an independent material of 725 families obtained from the Type 1 Diabetes Genetics Consortium. It is important to note that these associations were independent of the HLA-DRB1-DQA1-DQB1 genes, as well as of associations observed at HLA-A, -B and -C. Taken together, our results identify PRSS16 and BTN3A2, two genes thought to play important roles in regulating the immune response, as potentially novel susceptibility genes for T1D. FAU - Viken, M K AU - Viken MK AD - Institute of Immunology, Faculty Division Rikshospitalet, University of Oslo, Oslo, Norway. FAU - Blomhoff, A AU - Blomhoff A FAU - Olsson, M AU - Olsson M FAU - Akselsen, H E AU - Akselsen HE FAU - Pociot, F AU - Pociot F FAU - Nerup, J AU - Nerup J FAU - Kockum, I AU - Kockum I FAU - Cambon-Thomsen, A AU - Cambon-Thomsen A FAU - Thorsby, E AU - Thorsby E FAU - Undlien, D E AU - Undlien DE FAU - Lie, B A AU - Lie BA LA - eng GR - U01 DK062418/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20090319 PL - England TA - Genes Immun JT - Genes and immunity JID - 100953417 RN - 0 (Histocompatibility Antigens Class I) RN - EC 3.4.21.- (PRSS16 protein, human) RN - EC 3.4.21.- (Serine Endopeptidases) SB - IM MH - Alleles MH - Diabetes Mellitus, Type 1/*genetics/immunology MH - Female MH - Gene Frequency/genetics MH - *Genetic Predisposition to Disease MH - Genotype MH - Haplotypes MH - Histocompatibility Antigens Class I/*genetics/immunology MH - Humans MH - Linkage Disequilibrium MH - Male MH - Polymorphism, Single Nucleotide/genetics MH - Serine Endopeptidases/*genetics EDAT- 2009/03/20 09:00 MHDA- 2009/08/29 09:00 CRDT- 2009/03/20 09:00 PHST- 2009/03/20 09:00 [entrez] PHST- 2009/03/20 09:00 [pubmed] PHST- 2009/08/29 09:00 [medline] AID - gene200913 [pii] AID - 10.1038/gene.2009.13 [doi] PST - ppublish SO - Genes Immun. 2009 Jun;10(4):323-33. doi: 10.1038/gene.2009.13. Epub 2009 Mar 19.