PMID- 16386651 OWN - NLM STAT- MEDLINE DCOM- 20060922 LR - 20211203 IS - 0198-8859 (Print) IS - 0198-8859 (Linking) VI - 66 IP - 10 DP - 2005 Oct TI - HLA polymorphisms in Cabo Verde and Guine-Bissau inferred from sequence-based typing. PG - 1082-92 AB - Human leukocyte antigen (HLA)-A, -B, and -DRB1 polymorphisms were examined in the Cabo Verde and Guine-Bissau populations. The data were obtained at high-resolution level, using sequence-based typing. The most frequent alleles in each locus was: A*020101 (16.7% in Guine-Bissau and 13.5% in Cabo Verde), B*350101 (14.4% in Guine-Bissau and 13.2% in Cabo Verde), DRB1*1304 (19.6% in Guine-Bissau), and DRB1*1101 (10.1% in Cabo Verde). The predominant three loci haplotype in Guine-Bissau was A*2301-B*1503-DRB1*1101 (4.6%) and in Cabo Verde was A*3002-B*350101-DRB1*1001 (2.8%), exclusive to northwestern islands (5.6%) and absent in Guine-Bissau. The present study corroborates historic sources and other genetic studies that say Cabo Verde were populated not only by Africans but also by Europeans. Haplotypes and dendrogram analysis shows a Caucasian genetic influence in today's gene pool of Cabo Verdeans. Haplotypes and allele frequencies present a differential distribution between southeastern and northwestern Cabo Verde islands, which could be the result of different genetic influences, founder effect, or bottlenecks. Dendrograms and principal coordinates analysis show that Guineans are more similar to North Africans than other HLA-studied sub-Saharans, probably from ancient and recent genetic contacts with other peoples, namely East Africans. FAU - Spinola, Helder AU - Spinola H AD - Human Genetics Laboratory, University of Madeira, Campus of Penteada, Funchal, Portugal. FAU - Bruges-Armas, Jacome AU - Bruges-Armas J FAU - Middleton, Derek AU - Middleton D FAU - Brehm, Antonio AU - Brehm A LA - eng PT - Comparative Study PT - Journal Article DEP - 20051026 PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (HLA Antigens) RN - 0 (HLA-A Antigens) RN - 0 (HLA-B Antigens) RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) SB - IM MH - Alleles MH - Founder Effect MH - Gene Frequency MH - Genotype MH - Guinea-Bissau MH - HLA Antigens/*genetics MH - HLA-A Antigens/genetics MH - HLA-B Antigens/genetics MH - HLA-DR Antigens/genetics MH - HLA-DRB1 Chains MH - Humans MH - Phylogeny MH - Polymorphism, Genetic MH - Racial Groups MH - Sequence Analysis, DNA EDAT- 2006/01/03 09:00 MHDA- 2006/09/23 09:00 CRDT- 2006/01/03 09:00 PHST- 2005/06/15 00:00 [received] PHST- 2005/08/31 00:00 [accepted] PHST- 2006/01/03 09:00 [pubmed] PHST- 2006/09/23 09:00 [medline] PHST- 2006/01/03 09:00 [entrez] AID - S0198-8859(05)00420-9 [pii] AID - 10.1016/j.humimm.2005.09.001 [doi] PST - ppublish SO - Hum Immunol. 2005 Oct;66(10):1082-92. doi: 10.1016/j.humimm.2005.09.001. Epub 2005 Oct 26.