Acquisition of cross-resistance to bedaquiline and clofazimine following treatment for tuberculosis in Pakistan
A. Ghodousi, A. H. Rizvi, A. Q. Baloch, A. Ghafoor, F. M. Khanzada, M. Qadir, E. Borroni, A. Trovato, S. Tahseen, D. M. Cirillo
Abstract
We report on the first six cases of acquired resistance to bedaquiline in Pakistan. Seventy sequential culture isolates from 30 drug-resistant tuberculosis patients on bedaquiline-containing regimen were tested for minimum inhibitory concentration (MIC) and whole genome sequencing. An increase in MICs associated with cross-resistance to clofazimine and appearance of specific mutations was documented in six cases. The study underlines that appropriate monitoring is mandatory for the introduction of new drugs.
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