Common MCL1 polymorphisms associated with risk of tuberculosis
Hyoung Doo Shin1, Hyun Sub Cheong, Byung Lae Park
1Clinical Research Center for Tuberculosis, National Masan Tuberculosis Hospital, Masan, Korea.
BMB Reports
|May 3, 2008
Summary
Genetic variations in the MCL1 gene are linked to an increased risk of developing tuberculosis (TB). This study identified specific MCL1 polymorphisms associated with higher susceptibility to TB infection.
Area of Science:
- Genetics
- Immunology
- Infectious Diseases
Background:
- MCL1 expression increases during Mycobacterium tuberculosis infection.
- Investigating host genetic factors is crucial for understanding tuberculosis (TB) susceptibility.
Purpose of the Study:
- To identify genetic polymorphisms in the MCL1 gene.
- To determine if these polymorphisms are associated with the risk of clinical TB.
Main Methods:
- Sequencing of MCL1 exons, boundaries, and promoter regions.
- Genotyping of identified polymorphisms in TB patients (n=486) and controls (n=370).
- Statistical analysis to assess genetic associations.
Main Results:
- Eight polymorphisms in MCL1 were identified.
- A common promoter polymorphism (MCL1-324C>A), linked to other SNPs, showed significant association with increased TB risk.
- The frequency of the A-bearing genotype at -324C>A was higher in TB patients (P=0.0008, OR=1.68).
Conclusions:
- Polymorphisms in the MCL1 gene represent a potential genetic risk factor for developing clinical tuberculosis.
- These findings contribute to understanding the host genetic basis of TB susceptibility.
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