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HLA diversity in Brazil.

Juliano A Boquett1,2,3, Rafael Bisso-Machado3, Marcelo Zagonel-Oliveira1,4

  • 1Instituto Nacional de Genética Médica Populacional (iNaGeMP), Porto Alegre, Brazil.

HLA
|October 10, 2019
PubMed
Summary

Brazil

Keywords:
BrazilBrazilian populationHLAgenetic distancesgenetic diversity

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Area of Science:

  • Human Genetics
  • Immunology
  • Population Genetics

Background:

  • Brazil's population is genetically diverse due to centuries of admixture.
  • The Brazilian Bone Marrow Donor Registry is a significant global resource for HLA genetics.
  • Regional population differences in Brazil offer unique insights into genetic diversity.

Purpose of the Study:

  • To review and analyze Human Leukocyte Antigen (HLA) genetic diversity in Brazil.
  • To explore the implications of HLA diversity for transplantation and understanding population history.
  • To calculate genetic distances to provide a comprehensive overview of Brazilian HLA diversity.

Main Methods:

  • Review of published studies on classical HLA genetics in Brazil since the late 1980s.
  • Calculation of genetic distances using molecular data from selected studies.
  • Analysis of HLA allele frequencies and population structure.

Main Results:

  • Significant HLA genetic diversity exists across different Brazilian populations.
  • HLA profiles reflect the complex admixture history of Native Americans, Europeans, and Africans.
  • Genetic distances reveal distinct patterns within Brazilian subpopulations.

Conclusions:

  • Characterizing HLA diversity is crucial for optimizing bone marrow transplantation in Brazil.
  • HLA genetics provides valuable insights into Brazilian ancestry, history, and demographic patterns.
  • Further research can illuminate the role of HLA diversity in autoimmune diseases within Brazil.