ULK1 gene polymorphisms and severe tuberculosis in the Chinese Han population: a case-control study

Area of Science:

• Genetics and Immunology
• Molecular Biology
• Infectious Diseases

Background:

• Autophagy, regulated by the ULK1 gene, is crucial for host defense against Mycobacterium tuberculosis (Mtb).
• ULK1 gene variations may impact autophagic efficiency and influence tuberculosis (TB) severity.
• Understanding the genetic basis of TB susceptibility is vital for public health.

Purpose of the Study:

• To investigate the association between ULK1 gene polymorphisms and severe TB in a Chinese Han population.
• To explore the relationship between specific ULK1 SNPs and TB severity.
• To analyze clinical phenotype variations associated with ULK1 gene polymorphisms in TB patients.

Main Methods:

• A case-control study design comparing severe TB cases with mild TB controls.
• Genomic DNA extraction from peripheral blood samples for genotyping.
• Analysis of four tag single nucleotide polymorphisms (SNPs) in the ULK1 gene: rs9481, rs7138581, rs11616018, and rs1134574.

Main Results:

• The minor allele G of ULK1 SNP rs1134574 showed a significant association with increased risk of severe TB (OR=23.499, P<0.0001).
• No significant differences in genotype frequencies were found between severe and mild TB groups at this locus.
• Clinical phenotype analysis revealed significant differences in night sweats and neutrophil percentage among rs1134574 genotypes.

Conclusions:

• The ULK1 gene polymorphism rs1134574 is significantly associated with severe TB in the studied population.
• Clinical phenotype variations observed among different genotypes at rs1134574 suggest a role in disease manifestation.
• These findings highlight a potential link between ULK1 gene variations and TB severity in the Chinese Han population.