Mutations outside the rifampicin resistance-determining region associated with rifampicin resistance in Mycobacterium tuberculosis

Abstract excerpt

OBJECTIVES: Ninety-six percent of rifampicin resistance in Mycobacterium tuberculosis was shown to be associated with mutations inside the 81 bp rifampicin resistance-determining region (RRDR) located in the centre of the rpoB gene. The detection of rifampicin resistance by targeting the RRDR failed to match with a resistant phenotype in 4% of all cases. Our study aims to identify the mutations outside the RRDR...

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