- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02256696
Assessing PA-824 for Tuberculosis (the APT Trial)
June 26, 2023 updated by: Johns Hopkins University
A Phase 2 Randomized, Open-Label Trial of PA-824-Containing Regimens Versus Standard Treatment for Drug-Sensitive Sputum Smear-Positive Pulmonary Tuberculosis
Assess the mycobactericidal activity of PA-824 (given at 200 mg daily) when added to first-line tuberculosis (TB) treatment (isoniazid, pyrazinamide, and a rifamycin antibiotic) over 12 weeks of treatment.
Funding Source - FDA Office of Orphan Products Development (OOPD)
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
Phase IIB, 12-week, open-label, single-site, randomized clinical trial with three treatment groups.
Patients with drug-sensitive TB will all receive once daily isoniazid and pyrazinamide for 8 weeks followed by 4 weeks of daily isoniazid.
In addition, Arm 1 participants will receive PA-824 200 mg daily and rifampin 600 mg daily for 12 weeks.
Arm 2 participants will receive PA-824 200 mg daily and rifabutin 300 mg daily for 12 weeks.
Arm 3 participants (control group) will receive rifampin for 12 weeks and ethambutol for 8 weeks.
Patients will be screened within 1 week of TB diagnosis, will receive 12 weeks of study treatment and will return for follow-up visits at 4, 12, and 36 weeks after study treatment completion.
All patients will be referred to the local TB treatment program after completion of study treatment to finish their 24-week TB treatment course.
Study Type
Interventional
Enrollment (Actual)
157
Phase
- Phase 2
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
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Cape Town, South Africa
- University of Cape Town Lung Institute
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Description
Inclusion Criteria:
- Suspected pulmonary tuberculosis with acid-fast bacilli in a stained smear of expectorated sputum or Gene Xpert positive sputum sample. Patients having extra-pulmonary manifestations of tuberculosis, in addition to smear-positive pulmonary disease, are eligible for enrollment.
- Age > 18 years
- . Weight ≥ 40 kg and ≤ 80 kg
- Karnofsky score of at least 60 (requires occasional assistance but is able to care for most of his/her needs)
- . Signed informed consent
- . HIV negative, or positive with CD4 ≥350 cells/cu mm and not currently taking or planning to take combination antiretroviral therapy for HIV during the study.
- Ability to adhere with study follow-up
8 Agrees to adhere to contraceptive requirements
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Exclusion Criteria:
- Pregnant or breast-feeding
- Known intolerance or allergy to any of the study drugs
- Concomitant disorders or conditions for which isoniazid, rifampin, rifabutin, pyrazinamide, or ethambutol is contraindicated. These include severe hepatic damage, acute liver disease of any cause, allergy to the drug, and acute uncontrolled gouty arthritis.
- Current or planned therapy, during the intensive phase of TB therapy with cyclosporine or tacrolimus, which have unacceptable interactions with rifamycins.
- Any medical or psychosocial condition, which, in the view of the study investigator, makes study participation inadvisable.
- Pulmonary silicosis
- Central nervous system TB
- ECG at screening with corrected QT interval (QTc) (Fridericia correction) interval >450 ms or any clinically-significant, in the opinion of the investigator, ECG abnormality
- History and/or presence (or evidence) of neuropathy or epilepsy.
- History of lens opacity or evidence of lens opacity on slit lamp ophthalmologic examination with a value of 1.0 or higher on age-related eye disease scale 2 (AREDS2) Clinical Lens Opacity Classification and Grading System scale.
- Infection with an isolate known to be resistant to a first-line TB drug (for example, patients with Gene Xpert screening through the local TB program with results suggesting resistance to rifampin)
Laboratory parameters done at, or 14 days prior to, screening (with results available for review by study personnel) demonstrating any of the following:
- Serum alanine aminotransferase (ALT) activity > 3 times the upper limit of normal
- Serum total bilirubin level > 2 times the upper limit of normal
- Serum creatinine greater than the upper limit of normal
- Hemoglobin level less than 7.0 g/dL
- Platelet count less than 100,000/mm3
- Positive pregnancy test (women of childbearing potential)
- More than five days of treatment directed against active tuberculosis in the past 6 months -
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Arm 1
PA-824 200 mg once daily (QD),Rifampin 600 mg once daily, Isoniazid 5 mg/kg once daily, Pyrazinamide 25 mg/kg once daily x 8 weeks, then PA-824 200 mg once daily, Rifampin 600 mg once daily, Isoniazid 5 mg/kg once daily x 4 weeks
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200 mg QD
Other Names:
600 mg QD
25mg/kg QD
300 mg QD
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Experimental: Arm 2
PA-824 200 mg once daily,Rifabutin 300 mg once daily , Isoniazid 5 mg/kg once daily, Pyrazinamide 25 mg/kg once daily x 8 weeks, then PA-824 200 mg once daily, Rifabutin 300 mg once daily, Isoniazid 5 mg/kg once daily x 4 weeks
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200 mg QD
Other Names:
25mg/kg QD
300 mg QD
300 mg QD
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Active Comparator: Arm 3
Rifampin 600 mg once daily, Ethambutol 15mg/kg once daily, Isoniazid 5 mg/kg once daily, Pyrazinamide 25 mg/kg once daily x 8 weeks, then Rifampin 600 mg once daily, Isoniazid 5 mg/kg once daily x 4 weeks
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600 mg QD
25mg/kg QD
300 mg QD
15mg/kg QD
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Time to Sputum Culture Conversion on Liquid Medium
Time Frame: 12 weeks
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The time (days) it takes for the sputum to convert from positive to negative.
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12 weeks
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Number of Participants With Grade 3 or Higher Adverse Events
Time Frame: 12 weeks
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Any Grade 3 event according to the Division of AIDS (DAIDS) toxicity table
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12 weeks
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number of Participants With Permanent Discontinuation of Assigned Study Regimen
Time Frame: 12 weeks
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If it is in the best interest of a participant to stop the study regimen for any reason
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12 weeks
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Time to Culture Conversion on Solid Medium
Time Frame: 12 weeks
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The time (days) it takes for the sputum to convert form positive to negative on solid medium
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12 weeks
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Percentage of Participants With Sputum Culture Conversion by 8 Weeks of Treatment
Time Frame: 8 weeks
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Percentage of participants whose sputum converts from positive to negative at Week 8 time point, on solid and liquid media.
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8 weeks
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Steady State Pharmacokinetics (PK) (AUC) of PA-824 When Given With Rifampin or Rifabutin
Time Frame: pre-dose and 1, 2, 5, 8, and 24 hours post-dose on Day 14
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AUC of PA-824 when given with either rifampicin or rifabutin to determine steady state Pharmacokinetics (PK) of PA-824.
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pre-dose and 1, 2, 5, 8, and 24 hours post-dose on Day 14
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PK (Cmax) of PA-824 at 200 mg Once Daily With Rifampin or Rifabutin-containing Treatment
Time Frame: pre-dose and 1, 2, 5, 8, and 24 hours post-dose on Day 14
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The Pharmacokinetic results (Cmax) of the study drug when given with a rifampin or a rifabutin.
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pre-dose and 1, 2, 5, 8, and 24 hours post-dose on Day 14
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Relationship Between PA-824 Exposure (AUC) and Rate of Change in Time to Positivity (TTP) Over 12 Weeks
Time Frame: 12 weeks
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Relationship between PA-824 exposure (AUC) and rate of change in TTP over 12 weeks, using non-linear mixed effects modeling.
The data is reported as percentage increase in TTP per 10 unit increase in PA-824 AUC (% increase/10 unit increase PA-824 AUC).
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12 weeks
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Investigators
- Principal Investigator: Kelly E Dooley, MD PhD, Johns Hopkins University
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
April 29, 2015
Primary Completion (Actual)
May 1, 2022
Study Completion (Actual)
May 1, 2022
Study Registration Dates
First Submitted
September 25, 2014
First Submitted That Met QC Criteria
October 1, 2014
First Posted (Estimated)
October 6, 2014
Study Record Updates
Last Update Posted (Actual)
July 18, 2023
Last Update Submitted That Met QC Criteria
June 26, 2023
Last Verified
May 1, 2023
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Infections
- Respiratory Tract Infections
- Respiratory Tract Diseases
- Lung Diseases
- Bacterial Infections
- Bacterial Infections and Mycoses
- Gram-Positive Bacterial Infections
- Actinomycetales Infections
- Mycobacterium Infections
- Tuberculosis
- Tuberculosis, Pulmonary
- Molecular Mechanisms of Pharmacological Action
- Anti-Infective Agents
- Nucleic Acid Synthesis Inhibitors
- Enzyme Inhibitors
- Antimetabolites
- Hypolipidemic Agents
- Lipid Regulating Agents
- Anti-Bacterial Agents
- Leprostatic Agents
- Cytochrome P-450 Enzyme Inducers
- Cytochrome P-450 CYP3A Inducers
- Antitubercular Agents
- Antibiotics, Antitubercular
- Cytochrome P-450 CYP2B6 Inducers
- Cytochrome P-450 CYP2C8 Inducers
- Cytochrome P-450 CYP2C19 Inducers
- Cytochrome P-450 CYP2C9 Inducers
- Fatty Acid Synthesis Inhibitors
- Rifampin
- Rifabutin
- Isoniazid
- Pyrazinamide
- Ethambutol
Other Study ID Numbers
- NA_00093014
- #FD-R-004794-01 (Other Identifier: Office of Orphan Products Development (OOPD))
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
YES
IPD Plan Description
This plan is in process, to be finalized prior to the end of recruitment.
IPD Sharing Time Frame
Within one year of reaching recruitment goals.
IPD Sharing Access Criteria
This plan is in process, to be finalized prior to the end of recruitment.
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Yes
Studies a U.S. FDA-regulated device product
No
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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