PMID- 19255754 OWN - NLM STAT- MEDLINE DCOM- 20090413 LR - 20220311 IS - 1432-1211 (Electronic) IS - 0093-7711 (Linking) VI - 61 IP - 4 DP - 2009 Apr TI - Cost-effective HLA typing with tagging SNPs predicts celiac disease risk haplotypes in the Finnish, Hungarian, and Italian populations. PG - 247-56 LID - 10.1007/s00251-009-0361-3 [doi] AB - Human leukocyte antigen (HLA) genes, located on chromosome 6p21.3, have a crucial role in susceptibility to various autoimmune and inflammatory diseases, such as celiac disease and type 1 diabetes. Certain HLA heterodimers, namely DQ2 (encoded by the DQA1*05 and DQB1*02 alleles) and DQ8 (DQA1*03 and DQB1*0302), are necessary for the development of celiac disease. Traditional genotyping of HLA genes is laborious, time-consuming, and expensive. A novel HLA-genotyping method, using six HLA-tagging single-nucleotide polymorphisms (SNPs) and suitable for high-throughput approaches, was described recently. Our aim was to validate this method in the Finnish, Hungarian, and Italian populations. The six previously reported HLA-tagging SNPs were genotyped in patients with celiac disease and in healthy individuals from Finland, Hungary, and two distinct regions of Italy. The potential of this method was evaluated in analyzing how well the tag SNP results correlate with the HLA genotypes previously determined using traditional HLA-typing methods. Using the tagging SNP method, it is possible to determine the celiac disease risk haplotypes accurately in Finnish, Hungarian, and Italian populations, with specificity and sensitivity ranging from 95% to 100%. In addition, it predicts homozygosity and heterozygosity for a risk haplotype, allowing studies on genotypic risk effects. The method is transferable between populations and therefore suited for large-scale research studies and screening of celiac disease among high-risk individuals or at the population level. FAU - Koskinen, Lotta AU - Koskinen L AD - Department of Medical Genetics, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland. FAU - Romanos, Jihane AU - Romanos J FAU - Kaukinen, Katri AU - Kaukinen K FAU - Mustalahti, Kirsi AU - Mustalahti K FAU - Korponay-Szabo, Ilma AU - Korponay-Szabo I FAU - Barisani, Donatella AU - Barisani D FAU - Bardella, Maria Teresa AU - Bardella MT FAU - Ziberna, Fabiana AU - Ziberna F FAU - Vatta, Serena AU - Vatta S FAU - Szeles, Gyorgy AU - Szeles G FAU - Pocsai, Zsuzsa AU - Pocsai Z FAU - Karell, Kati AU - Karell K FAU - Haimila, Katri AU - Haimila K FAU - Adany, Roza AU - Adany R FAU - Not, Tarcisio AU - Not T FAU - Ventura, Alessandro AU - Ventura A FAU - Maki, Markku AU - Maki M FAU - Partanen, Jukka AU - Partanen J FAU - Wijmenga, Cisca AU - Wijmenga C FAU - Saavalainen, Paivi AU - Saavalainen P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Validation Study DEP - 20090303 PL - United States TA - Immunogenetics JT - Immunogenetics JID - 0420404 RN - 0 (HLA Antigens) SB - IM MH - Celiac Disease/*genetics/immunology MH - Genetic Testing/economics/*methods MH - HLA Antigens/*genetics MH - Haplotypes MH - Humans MH - *Polymorphism, Single Nucleotide EDAT- 2009/03/04 09:00 MHDA- 2009/04/14 09:00 CRDT- 2009/03/04 09:00 PHST- 2008/11/05 00:00 [received] PHST- 2009/02/13 00:00 [accepted] PHST- 2009/03/04 09:00 [entrez] PHST- 2009/03/04 09:00 [pubmed] PHST- 2009/04/14 09:00 [medline] AID - 10.1007/s00251-009-0361-3 [doi] PST - ppublish SO - Immunogenetics. 2009 Apr;61(4):247-56. doi: 10.1007/s00251-009-0361-3. Epub 2009 Mar 3.