PMID- 24405442 OWN - NLM STAT- MEDLINE DCOM- 20141024 LR - 20140227 IS - 1399-0039 (Electronic) IS - 0001-2815 (Linking) VI - 83 IP - 3 DP - 2014 Mar TI - Allele and haplotype frequencies of HLA-DPA1 and -DPB1 in the population of Guadeloupe. PG - 147-53 LID - 10.1111/tan.12271 [doi] AB - Genetic polymorphism of human leukocyte antigen (HLA)-DPA1 and -DPB1 loci was studied in 154 unrelated individuals from Guadeloupe, an archipelago of five islands located in the Carribean Sea. Thirty different DPB1 and eight different DPA1 alleles were observed with a heterozygosity index of 0.87 and 0.78, respectively. This high degree of heterozygosity corresponds with those found in African populations. The DPB1* 01:01:01 allele was most frequent (0.260), followed by 02:01:02 (0.143) and 04:01:01 (0.127). The DPA1 alleles 01:03 (0.380), 02:01 (0.302), 02:02 (0.175) and 03:01 (0.123) were identified in >35 individuals each, whereas 01:04, 01:05 and 04:01 were present only once. Haplotype estimations revealed the presence of 39 different haplotypes, with DPB1*01:01:01-DPA1*02:02 and DPB1*02:01:02-DPA1*01:03 as the most frequent (0.143 and 0.140, respectively). A striking difference was observed in DPB1/DPA1 associations between DPB1*04:02 and *105:01, that have identical exon 2 sequences. DPB1*04:02 was exclusively associated with DPA1*01:03, whereas DPB1*105:01 was present with DPA1*03:01, *03:02 or *04:01. This implies that the DP molecules are actually different, and this difference is relevant to consider in studies on the function of HLA-DP molecules in transplantation. Overall, HLA-DPA1 and DPB1 allele frequencies and haplotypes of the population of Guadeloupe were most similar to African populations, with characteristic alleles and haplotypes that bespeaks the admixture with other ethnicities. CI - (c) 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. FAU - Voorter, C E M AU - Voorter CE AD - Transplantation Immunology, Tissue Typing Laboratory, Maastricht University Medical Center, Maastricht, the Netherlands. FAU - Groeneweg, M AU - Groeneweg M FAU - Joannis, M-O AU - Joannis MO FAU - Meertens, C AU - Meertens C FAU - Agis, F AU - Agis F FAU - Tilanus, M G J AU - Tilanus MG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140110 PL - England TA - Tissue Antigens JT - Tissue antigens JID - 0331072 RN - 0 (Epitopes) RN - 0 (HLA-DP alpha-Chains) RN - 0 (HLA-DP beta-Chains) RN - 0 (HLA-DPA1 antigen) RN - 0 (HLA-DPB1 antigen) SB - IM MH - Adult MH - *Alleles MH - Amino Acid Motifs MH - Child, Preschool MH - Epitopes/chemistry/immunology MH - Female MH - Gene Frequency/*genetics MH - *Genetics, Population MH - Guadeloupe MH - HLA-DP alpha-Chains/*genetics MH - HLA-DP beta-Chains/*genetics MH - Haplotypes/*genetics MH - Humans MH - Male OTO - NOTNLM OT - Guadeloupe OT - HLA allele frequencies OT - HLA haplotypes OT - HLA-DPA1 OT - HLA-DPB1 OT - population EDAT- 2014/01/11 06:00 MHDA- 2014/10/25 06:00 CRDT- 2014/01/11 06:00 PHST- 2013/09/06 00:00 [received] PHST- 2013/11/15 00:00 [revised] PHST- 2013/11/28 00:00 [accepted] PHST- 2014/01/11 06:00 [entrez] PHST- 2014/01/11 06:00 [pubmed] PHST- 2014/10/25 06:00 [medline] AID - 10.1111/tan.12271 [doi] PST - ppublish SO - Tissue Antigens. 2014 Mar;83(3):147-53. doi: 10.1111/tan.12271. Epub 2014 Jan 10.