Medknow Publications, International Journal of Mycobacteriology, 5(9), p. 6, 2021
American Society for Microbiology, Antimicrobial Agents and Chemotherapy, 9(63), 2019
DOI: 10.1128/aac.00915-19
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We report on the first six cases of acquired resistance to bedaquiline in Pakistan. Seventy sequential isolates from 30 drug-resistant-tuberculosis patients on bedaquiline-containing regimens were retrospectively tested for bedaquiline resistance by MIC testing and by the detection of mutations in relevant genes. We documented cases failing therapy that developed specific mutations in Rv0678 and had increased MICs associated with cross-resistance to clofazimine during treatment.