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- W2783758534 abstract "To characterize the genetic determinants of resistance to antituberculosis drugs, we performed a genome-wide association study (GWAS) of 6,465 Mycobacterium tuberculosis clinical isolates from more than 30 countries. A GWAS approach within a mixed-regression framework was followed by a phylogenetics-based test for independent mutations. In addition to mutations in established and recently described resistance-associated genes, novel mutations were discovered for resistance to cycloserine, ethionamide and para-aminosalicylic acid. The capacity to detect mutations associated with resistance to ethionamide, pyrazinamide, capreomycin, cycloserine and para-aminosalicylic acid was enhanced by inclusion of insertions and deletions. Odds ratios for mutations within candidate genes were found to reflect levels of resistance. New epistatic relationships between candidate drug-resistance-associated genes were identified. Findings also suggest the involvement of efflux pumps (drrA and Rv2688c) in the emergence of resistance. This study will inform the design of new diagnostic tests and expedite the investigation of resistance and compensatory epistatic mechanisms. A GWAS of multi- and extensively drug-resistant tuberculosis using 6,465 Mycobacterium tuberculosis clinical isolates from more than 30 countries identifies novel mutations associated with resistance. The capacity to detect resistance in particular to ethionamide, pyrazinamide, capreomycin, cycloserine and paraaminosalicylic acid was enhanced by inclusion of insertions and deletions." @default.
- W2783758534 created "2018-01-26" @default.
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- W2783758534 date "2018-01-22" @default.
- W2783758534 modified "2023-10-13" @default.
- W2783758534 title "Genome-wide analysis of multi- and extensively drug-resistant Mycobacterium tuberculosis" @default.
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