- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02534727
Sputum Pharmacokinetics of TB Drugs and Bacterial Drug Resistance
Background:
Many people around the world get tuberculosis (TB) and non-tuberculous mycobacteria (NTM) infections. Sometimes medicine that treats these infections does not get to where the bacteria are in the lungs. Researchers want to find a way to tell if enough medicine is getting to where it is needed in the lungs. They will look at how much medicine is in your sputum (what you cough up) compared to how much is in your blood. They will also investigate a new test to quickly figure out what medicines are likely to treat TB effectively.
Objective:
To determine the relationship between the concentration of TB drugs in plasma and sputum over time.
Eligibility:
People ages 18 and older who have TB or NTM infection that is suspected to be drug resistant. They must be taking TB or NTM medicines.
Design:
Participants will be screened with medical history.
Participants will be in the study for 2 8 days.
Participants will give 3 or more sputum samples over at least 2 different days. They will cough sputum into a cup.
Participants will have blood drawn 4 times a day on 2 different days.
Study Overview
Status
Conditions
Detailed Description
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Zhengzhou,, China
- Henan Provincial Chest Hospital
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Maryland
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Bethesda, Maryland, United States, 20892
- National Institutes of Health Clinical Center, 9000 Rockville Pike
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
INCLUSION CRITERIA:
- At least 18 years of age
- Diagnosis of TB (and/or NTM for NIH clinical center subjects)
- Ongoing signs and/or symptoms of pulmonary TB (and/or NTM at the NIH CC)
- Suspected drug resistance (drug susceptible allowed at the NIH CC)
- Available to provide at least 3 sputa over 2 or more days
- Taking anti-tuberculosis medicines (or NTM meds at NIH CC) during the time sputa are provided
- Thought likely to be Mycobacterium culture positive (including NTM infected for the NIH CC) by enrolling physician
- GeneXpert MTB/RIF sputum TBpositive (China subjects only)
- Likely able to produce sputum samples while on study
- Willing to provide blood samples
- Willing to have samples stored
EXCLUSION CRITERIA:
- Acute liver or kidney disease
- Conditions which compromise the subject s ability to take or absorb oral drugs
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
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Sputum and blood participants
These participants will contribute both blood and sputum to the study
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Sputum only participants
These participants will only contribute sputum to the study
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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The primary endpoint is the AUC (0-24) in sputum and blood.
Time Frame: 0-24 hrs
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drug-specific correlation coefficients of the AUCs for sputum and blood
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0-24 hrs
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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drug-specific time-concentration curves, as well as drug exposure in sputum relative to that in cavity caseum
Time Frame: Throughout
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Estimation of time-concentration curves, as well as variance components of sputum PK parameters to better inform sputum PK sampling in future studies.
Additionally, the relationship between drug-specific exposures in cavity caseum, from historical data, and that in sputum will be evaluated using correlation coefficients.
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Throughout
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Collaborators and Investigators
Publications and helpful links
General Publications
- Wilkins JJ, Savic RM, Karlsson MO, Langdon G, McIlleron H, Pillai G, Smith PJ, Simonsson US. Population pharmacokinetics of rifampin in pulmonary tuberculosis patients, including a semimechanistic model to describe variable absorption. Antimicrob Agents Chemother. 2008 Jun;52(6):2138-48. doi: 10.1128/AAC.00461-07. Epub 2008 Apr 7.
- Dartois V. Drug forgiveness and interpatient pharmacokinetic variability in tuberculosis. J Infect Dis. 2011 Dec 15;204(12):1827-9. doi: 10.1093/infdis/jir662. Epub 2011 Oct 21. No abstract available.
- Peloquin C. Use of therapeutic drug monitoring in tuberculosis patients. Chest. 2004 Dec;126(6):1722-4. doi: 10.1378/chest.126.6.1722. No abstract available.
Helpful Links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 150187
- 15-I-0187
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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