Affiliation:
1. Biochemistry and Genetics Institute of Ufa Federal Research Center of the Russian Academy of Sciences
2. Republican Clinical TB Dispensary
3. Bashkiriya State Medical University
4. University of Tartu
Abstract
The objective of the study: to evaluate the efficacy of treatment of extensive drug resistant tuberculosis (XDR-TB) in patients with different genotypes in the biotransformation system NAT2 (rs1041983, rs1799930, rs1799931, rs1801280) and CYP2B6 genes (rs3745274).Subjects and methods. The study involved patients undergoing in-patient treatment at Republican Clinical TB Dispensary in Ufa from 2016 to 2018. XDR TB group included 210 people; the control group included 343 healthy donors. Molecular genetic analysis was performed on DNA samples isolated from peripheral blood leukocytes. Genotyping of polymorphic loci was carried out by kompetitive allele specific PCR (KASP).Results. It was revealed that polymorphic loci rs1799931 of NAT2 gene and rs3745274 of CYP2B6 gene were associated with the risk of developing XDR TB. Regression analysis detected combinations of the predictor genotypes of rs1799931*G/A × rs3745274*G/T and rs1799931*G/G × rs37455274*(G/G+T/T), that significantly reduce efficacy of XDR TB treatment.
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