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| Name | Class |
|---|---|
| University Hospital, Linkoeping | OTHER |
| Karolinska University Hospital | OTHER |
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Drug resistant TB is increasing and in order to enchance the efficacy of the current drugs, individualized therapy using plasma drug concentrations and minimal inhibitory concentration (MIC) determination may be of importance. This concept is defined as therapeutic drug monitoring (TDM).
In this pilot study our hypothesis is that the ratio between MIC and drug concentration data is correlated to the bacterial load measured as time to positive liquid culture (TTP).
In two sites in Sweden (Linköping and Karolinska Hospital Solna, Stockholm), 25 patients with pulmonary tuberculosis will be recruited. MIC-determination of Mycobacterium tuberculosis will be performed in BACTEC 960 MGIT and drug concentration will be determined at 2, 4 and 12 weeks after treatment initiation using LC-MS/MS methodology. Sputum cultures will be obtained at 0, 2 days, 7 days, 2 weeks, 4 weeks and 8 weeks and TTP will be measured in duplicate samples. Clinical follow up according to WHO criteria will be performed 1 year after completion of treatment.
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| Measure | Description | Time Frame |
|---|---|---|
| Rifampicin concentration in relationship to MIC over 10 | 2 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| Cure rate on Clinical follow up (according to WHO criteria) in relation to rifampicin concentration at week 2 | 1 year | |
| Sputum Culture conversion in relation to rifampicin, isoniazid and pyrazinamid concentration week 2 | 2 and 8 weeks |
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Inclusion Criteria:
Age>18 years, culture verified tuberculosis
Exclusion Criteria:
Other infectious diseases other than HIV or tuberculosis
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Newly diagnosed patients with culture verified tuberculosis
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| Name | Affiliation | Role |
|---|---|---|
| Katarina Niward, MD | Linkoeping University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Dept of Infectious Diseases | Linköping | Linköping | 581 85 | Sweden | ||
| Dept of Infectious Diseases, TB-unit, Karolinska Hospital |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 30124844 | Derived | Niward K, Davies Forsman L, Bruchfeld J, Chryssanthou E, Carlstrom O, Alomari T, Carlsson B, Pohanka A, Mansjo M, Jonsson Nordvall M, Johansson AG, Eliasson E, Werngren J, Paues J, Simonsson USH, Schon T. Distribution of plasma concentrations of first-line anti-TB drugs and individual MICs: a prospective cohort study in a low endemic setting. J Antimicrob Chemother. 2018 Oct 1;73(10):2838-2845. doi: 10.1093/jac/dky268. |
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| ID | Term |
|---|---|
| D055985 | Latent Tuberculosis |
| ID | Term |
|---|---|
| D014376 | Tuberculosis |
| D009164 | Mycobacterium Infections |
| D000193 | Actinomycetales Infections |
| D016908 | Gram-Positive Bacterial Infections |
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| TB-score in relation to rifampicin, isoniazid and pyrazinamid concentration week 2 | 8 weeks |
| Time to positive Culture (TTP) in relation to isoniazid, ethambutol and pyrazinamid serum concentration and minimal inhibitory concentration (MIC) | 2 and 8 weeks |
| Time to positive Culture (TTP) in relation to rifampicin serum concentration and minimal inhibitory concentration (MIC) | 2weeks |
| Stockholm |
| Stockholm County |
| 17671 |
| Sweden |
| D001424 | Bacterial Infections |
| D001423 | Bacterial Infections and Mycoses |
| D007239 | Infections |
| D000085343 | Latent Infection |