PMID- 18721272 OWN - NLM STAT- MEDLINE DCOM- 20081020 LR - 20220331 IS - 0001-2815 (Print) IS - 0001-2815 (Linking) VI - 72 IP - 2 DP - 2008 Aug TI - Genetic affinities of north and northeastern populations of India: inference from HLA-based study. PG - 120-30 LID - 10.1111/j.1399-0039.2008.01083.x [doi] AB - India is like a microcosm of the world in terms of its diversity; religion, climate and ethnicity which leads to genetic variations in the populations. As a highly polymorphic marker, the human leukocyte antigen (HLA) system plays an important role in the genetic differentiation studies. To assess the genetic diversity of HLA class II loci, we studied a total of 1336 individuals from north India using DNA-based techniques. The study included four endogamous castes (Kayastha, Mathurs, Rastogies and Vaishyas), two inbreeding Muslim populations (Shias and Sunnis) from north India and three northeast Indian populations (Lachung, Mech and Rajbanshi). A total of 36 alleles were observed at DRB1 locus in both Hindu castes and Muslims from north, while 21 alleles were seen in northeast Indians. At the DQA1 locus, the number of alleles ranged from 11 to 17 in the studied populations. The total number of alleles at DQB1 was 19, 12 and 20 in the studied castes, Muslims and northeastern populations, respectively. The most frequent haplotypes observed in all the studied populations were DRB1*0701-DQA1*0201-DQB1*0201 and DRB1*1501-DQA1*0103-DQB1*0601. Upon comparing our results with other world populations, we observed the presence of Caucasoid element in north Indian population. However, differential admixturing among Sunnis and Shias with the other north Indians was evident. Northeastern populations showed genetic affinity with Mongoloids from southeast Asia. When genetic distances were calculated, we found the north Indians and northeastern populations to be markedly unrelated. FAU - Agrawal, S AU - Agrawal S AD - Department of Medical Genetics, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India. suraksha@sgpgi.ac.in FAU - Srivastava, S K AU - Srivastava SK FAU - Borkar, M AU - Borkar M FAU - Chaudhuri, T K AU - Chaudhuri TK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Tissue Antigens JT - Tissue antigens JID - 0331072 RN - 0 (HLA Antigens) RN - 0 (HLA-DQ Antigens) RN - 0 (HLA-DQ alpha-Chains) RN - 0 (HLA-DQ beta-Chains) RN - 0 (HLA-DQA1 antigen) RN - 0 (HLA-DQB1 antigen) RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) SB - IM MH - Gene Frequency MH - Genetic Drift MH - *Genetic Speciation MH - *Genetic Variation MH - Genetics, Population MH - Geography MH - HLA Antigens/*genetics MH - HLA-DQ Antigens/genetics MH - HLA-DQ alpha-Chains MH - HLA-DQ beta-Chains MH - HLA-DR Antigens/genetics MH - HLA-DRB1 Chains MH - Haplotypes MH - Humans MH - India MH - Phylogeny MH - Population Groups/*genetics EDAT- 2008/08/30 09:00 MHDA- 2008/10/22 09:00 CRDT- 2008/08/30 09:00 PHST- 2008/08/30 09:00 [pubmed] PHST- 2008/10/22 09:00 [medline] PHST- 2008/08/30 09:00 [entrez] AID - TAN1083 [pii] AID - 10.1111/j.1399-0039.2008.01083.x [doi] PST - ppublish SO - Tissue Antigens. 2008 Aug;72(2):120-30. doi: 10.1111/j.1399-0039.2008.01083.x.