Nomenclature for factors of the HLA system, update July 1995

Marsh, Steven G.E.

doi:10.1111/j.1399-0039.1995.tb02508.x

Tissue Antigens

1995

DOI: 10.1111/j.1399-0039.1995.tb02508.x

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Nomenclature for factors of the HLA system, update July 1995

Steven G.E. Marsh¹

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Cited by 17 publications

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“…The HLA-A23 and A24 specificities, both subdivisions of HLA-A9, have been well defined serologically for many years (1)(2)(3). Although several HLA-A9 alleles have been identified by DNA sequencing (4)(5)(6)(7)(8)(9) only one additional specificity, originally termed A9.3, has been identified. The HLA-A9.3 specificity (now assigned A2403 (10)) has proved difficult to define serologically ( 1 [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] and consequently little is known of its distribution or the nature of haplotypes possessing the A*2403 allele.…”

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Distribution of the HLA‐A9 antigen family (A23, A24 and A2403)

et al. 1996

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Characterization of 50 local anti-HLA-A9 (A23 and/or A24) sera against the HLA-A2403 antigen allowed the retrospective assignment of A2403 and the verification of A23 and A24 specificities in a panel of 9196 volunteer bone marrow donors. The six A2403 positive subjects identified were confirmed by PCR using four sequence-specific primer mixtures. Population analysis showed the distribution and HLA-A/B linkage disequilibrium of HLA-A23 and A24 to be typical of a Northern European Caucasoid population. HLA-A2403 has a phenotype frequency of 0.00065 (gene frequency-0.00033) and is in linkage disequilibrium with HLA-B63 and possibly B35.

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Distribution of the HLA‐A9 antigen family (A23, A24 and A2403)

et al. 1996

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Identification and DNA typing of two Cw7 alleles (Cw∗0702 and Cw∗0704) in Japanese, with the corrected sequence of Cw∗0702

et al. 1996

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HLA‐DQA1 polymorphism in autochthonous Basques from Navarre (Spain): Genetic position within European and Mediterranean scopes

et al. 2003

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In this work, a sample of 112 individuals from an autochthonous Basque population (Northern Navarre, Spain) were typed at the DNA level for the HLA-DQA1 locus, with the aim of characterizing its polymorphism and analyzing the genetic relationships of Basque Navarrese with other Caucasian populations. Northern Navarre is a neighboring area with Guipúzcoa, a province located in the core of the Basque territory having the highest proportion of Basque-speakers. In Navarrese population, the most frequent alleles were DQA1*01 (0.375) and DQA1*02 (0.259). Frequency clines for both DQA1*0103 allele and DQA1*04* allele cluster (including DQA1*0401, DQA1*0501 and DQA1*0601) among the European and Mediterranean populations considered are reported for the first time. Furthermore, a spatial structuring previously described for DQA1*02 allele is corroborated. The information provided by the highly polymorphic HLA-DQA1 locus was stressed by using genetic distances and non-metrical multidimensional scaling (MDS). The analysis of genetic relationships among populations showed a high genetic affinity between the Basque subpopulations of Northern Navarre and Guipúzcoa, which in turn tended to plot separately from the remaining European and Mediterranean populations. In the same way, the Basques showed no clear relationship to North African populations, as postulated in several previous HLA studies. The observed genetic heterogeneity seems to be conditioned by the high frequencies of the DQA1*02 allele in Basques from Guipúzcoa and North Navarre. These two subpopulations seem to show low levels of admixture with other non-Basque neighboring populations, probably because of their deeply rooted ethnicity and the existence of a linguistic barrier to random mating.

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Nomenclature for factors of the HLA system, update July 1995

Cited by 17 publications

References 0 publications

Distribution of the HLA‐A9 antigen family (A23, A24 and A2403)

Distribution of the HLA‐A9 antigen family (A23, A24 and A2403)

Identification and DNA typing of two Cw7 alleles (Cw∗0702 and Cw∗0704) in Japanese, with the corrected sequence of Cw∗0702

HLA‐DQA1 polymorphism in autochthonous Basques from Navarre (Spain): Genetic position within European and Mediterranean scopes

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