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Human genetic susceptibility to tuberculosis.

T K Lim1

  • 1Department of Medicine, National University Hospital, Singapore. mdclimtk@nus.edu.sg

Annals of the Academy of Medicine, Singapore
|September 8, 2000
PubMed
Summary

Genetic factors significantly influence human susceptibility to tuberculosis (TB). Research identifies multiple non-HLA genes and pathways involved in TB immunity, highlighting complex inheritance patterns.

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Area of Science:

  • Genetics
  • Immunology
  • Microbiology

Background:

  • Understanding human susceptibility to tuberculosis (TB) has advanced through molecular techniques.
  • Investigating the genetic regulation of host defense is crucial for TB research.

Purpose of the Study:

  • To review current knowledge on human genetic susceptibility to mycobacteria.
  • To synthesize findings on genetic factors influencing tuberculosis risk.

Main Methods:

  • MEDLINE database search for relevant articles.
  • Review of studies on human genetic susceptibility to mycobacteria.

Main Results:

  • Natural selection impacts ethnic group susceptibility to infectious diseases like TB.
  • Multiple non-HLA genes, vitamin D receptor variations, and a locus on chromosome 17q are linked to TB susceptibility.
  • Rare disorders reveal mutations in interferon gamma-interleukin 12 pathways affecting mycobacterial immunity.

Conclusions:

  • Tuberculosis susceptibility is polygenic and inherited in a complex manner.
  • Ongoing human genome project progress is expected to yield further discoveries in TB genetics.

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