News Release

How can we overcome the barriers to treating drug-resistant TB?

Peer-Reviewed Publication

PLOS

Almost 1 in 20 cases of tuberculosis worldwide is resistant to multiple drugs (known as multidrug-resistant TB or MDR-TB) and the World Health Organization has called for a massive scale up in public health efforts to tackle these cases. In this week's PLoS Medicine, a group of MDR-TB experts outlines its recommendations on conducting research that would help in the scale up.

MDR-TB can be effectively treated using second-line TB drugs, though these drugs are more expensive, less potent, and less well tolerated than first-line drugs. Fewer than 2% of all patients with MDR-TB are receiving appropriate second-line treatment. The WHO has therefore called for a dramatic scale up of MDR-TB treatment as a routine component of TB control, setting a target of treating 1.6 million patients with MDR-TB by 2015. Pilot projects of MDR-TB management (known as "programmatic management of drug-resistant TB" or PMDT) in five low income settings showed treatment success rates of 59%-83%.

Frank Cobelens (KNVC Tuberculosis Foundation) and colleagues, writing on behalf of the Working Group on MDR-TB of the Stop TB Partnership, lay out their "prioritized research agenda." The agenda identifies the most important barriers to scaling up the treatment of MDR-TB and prioritizes the research questions to be addressed to overcome these barriers.

Their research priorities include:

  • new and improved tools for testing patients to see if they have drug-resistant TB
  • clinical trials of simplified and shorter second-line treatments for MDR-TB
  • new and improved strategies for diagnosis of drug-resistant TB, for helping patients complete the whole course of drug treatment, and for controlling the spread of the infection
  • understanding geographic variations in the occurrence of drug resistance
  • clinical trials to test whether giving TB drugs to people who came into contact with patients with drug-resistant TB prevents them from developing resistant TB.

With increasing recognition of drug-resistant TB worldwide, say Cobelens and colleagues, "the time has come to move PMDT in resource-limited settings beyond the limited, pilot project phase."

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Citation: Cobelens FGJ, Heldal E, Kimerling ME, Mitnick CD, Podewils LJ, et al. (2008) Scaling up programmatic management of drug-resistant tuberculosis: A prioritized research agenda. PLoS Med 5(7): e150. doi:10.1371/journal.pmed.0050150.

IN YOUR ARTICLE, PLEASE LINK TO THIS URL, WHICH WILL PROVIDE ACCESS TO THE PUBLISHED PAPER: http://medicine.plosjournals.org/perlserv/?request=get-document&doi=10.1371/journal.pmed.0050150

PRESS-ONLY PREVIEW OF THE ARTICLE: http://www.plos.org/press/plme-05-07-cobelens.pdf

CONTACT:

Frank Cobelens
KNCV Tuberculosis Foundation
The Hague, 2514 JD
Netherlands
+31 70 4270955
cobelensf@kncvtbc.nl


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