@article {Huang:2015:1027-3719:319,
title = "MTBDRplus results correlate with treatment outcome in previously treated tuberculosis patients",
journal = "The International Journal of Tuberculosis and Lung Disease",
parent_itemid = "infobike://iuatld/ijtld",
publishercode ="iuatld",
year = "2015",
volume = "19",
number = "3",
publication date ="2015-03-01T00:00:00",
pages = "319-325",
itemtype = "ARTICLE",
issn = "1027-3719",
eissn = "1815-7920",
url = "https://www.ingentaconnect.com/content/iuatld/ijtld/2015/00000019/00000003/art00016",
doi = "doi:10.5588/ijtld.14.0406",
keyword = "MDR-TB, treatment outcome, previously treated patients, GenoType® MTBDRplus assay",
author = "Huang, F-L. and Jin, J-L. and Chen, S. and Zhou, Z. and Diao, N. and Huang, H-Q. and Liu, W. and Wang, Q. and Weng, X-H. and Chaisson, R. E. and Zhang, Y. and Zhang, W-H.",
abstract = "BACKGROUND: Although MTBDRplus is validated for the detection of multidrug-resistant tuberculosis (MDR-TB), its role in the assessment of treatment outcome is less clear. We evaluated the association of MTBDRplus results with treatment outcome in new and previously treated
patients in an endemic setting in China and determined factors associated with poor treatment outcomes.METHODS: We prospectively enrolled 298 smear-positive pulmonary TB patients who received the World Health Organization recommended initial treatment regimen or retreatment regimen. MTBDRplus
was compared with conventional drug susceptibility testing and DNA sequencing for the detection of MDR-TB. Treatment responses were monitored using sputum smear, culture and chest radiography.RESULTS: MTBDRplus successfully identified all MDR-TB and had good concordance with sequencing.
MDR-TB rates were low among new patients (4/187, 2.1%), but high in previously treated patients (12/28, 42.9%); 65.2% (15/23) of previously treated cases and 17.1% (27/158) of new cases were unsuccessfully treated (P < 0.001). Seven of eight (87.5%) previously treated MDR-TB patients
failed the retreatment regimen. In addition to drug resistance, sputum smear positivity at week 8 and cavitation are associated with treatment failure.CONCLUSION: Not only did MTBDRplus correctly identify all MDR-TB cases, MTBDRplus results are also associated with treatment
outcomes in previously treated patients. The retreatment regimen should no longer be used; treatment should be guided by molecular testing.
",
}