TBTC Study 23A: Pharmacokinetics of Intermittent Isoniazid and Rifabutin in HIV-TB

NCT ID: NCT00023348

Last Updated: 2005-09-13

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2/PHASE3

Total Enrollment

150 participants

Study Classification

INTERVENTIONAL

Study Start Date

1999-07-31

Study Completion Date

2002-11-30

Brief Summary

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Primary Objectives:

1\) To determine the proportion of patients with HIV-related tuberculosis who have abnormal pharmacokinetic parameters for isoniazid and rifabutin.

Secondary Objectives:

1. To determine risk factors for abnormal pharmacokinetic parameters for isoniazid and rifabutin.
2. To evaluate the correlation between pharmacokinetic parameters of isoniazid and rifabutin and the occurrence of toxicity attributed to antituberculous therapy.
3. To evaluate the correlation between pharmacokinetic parameters of isoniazid and rifabutin and the efficacy of TB therapy.
4. To define and correlate phenotypic INH acetylator status with the results of genotypic acetylator data obtained in the parent trial.

Detailed Description

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This study will seek to enroll every eligible patient enrolled in TBTC Study 23. Consenting patients will be asked to undergo measurements of isoniazid (if receiving), rifabutin and 25-OH desacetyl rifabutin levels at a time point in the study when steady state rifabutin levels are expected to have been achieved (at least two weeks following the start of rifabutin).

Conditions

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HIV Infections Tuberculosis

Keywords

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Tuberculosis TB

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Interventions

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Isoniazid

Intervention Type DRUG

Rifabutin

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. Patient enrolled in TBTC Study 23
2. Informed consent

Exclusion:

1\. Severe anemia (Hct \<25%)
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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US Department of Veterans Affairs

FED

Sponsor Role collaborator

Centers for Disease Control and Prevention

FED

Sponsor Role lead

Principal Investigators

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Marc Weiner, MD

Role: PRINCIPAL_INVESTIGATOR

Audie L. Murphy VA Medical Center, San Antonio TX

Locations

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Central Arkansas Veterans Health System

Little Rock, Arkansas, United States

Site Status

LA County/USC Medical Center

Los Angeles, California, United States

Site Status

University of California, San Francisco

San Francisco, California, United States

Site Status

Denver Department of Public Health and Hospitals

Denver, Colorado, United States

Site Status

Washington, D.C. VAMC

Washington D.C., District of Columbia, United States

Site Status

Chicago VA Medical Center (Lakeside)

Chicago, Illinois, United States

Site Status

Hines VA Medical Center

Hines, Illinois, United States

Site Status

Johns Hopkins University School of Medicine

Baltimore, Maryland, United States

Site Status

Boston Medical Center

Boston, Massachusetts, United States

Site Status

New Jersey Medical School

Newark, New Jersey, United States

Site Status

New York University School of Medicine

New York, New York, United States

Site Status

Columbia University/Presbyterian Medical Center

New York, New York, United States

Site Status

Harlem Hospital Center

New York, New York, United States

Site Status

Carolinas Medical Center

Charlotte, North Carolina, United States

Site Status

Duke University Medical Center

Durham, North Carolina, United States

Site Status

Nashville VA Medical Center

Nashville, Tennessee, United States

Site Status

University of North Texas Health Science Center

Fort Worth, Texas, United States

Site Status

Thomas Street Clinic

Houston, Texas, United States

Site Status

Audi L. Murphy VA Hospital

San Antonio, Texas, United States

Site Status

Seattle King County Health Department

Seattle, Washington, United States

Site Status

University of British Columbia

Vancouver, British Columbia, Canada

Site Status

University of Manitoba

Winnipeg, Manitoba, Canada

Site Status

Montreal Chest Institute McGill University

Montreal, Quebec, Canada

Site Status

Countries

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United States Canada

References

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Weiner M, Benator D, Burman W, Peloquin CA, Khan A, Vernon A, Jones B, Silva-Trigo C, Zhao Z, Hodge T; Tuberculosis Trials Consortium. Association between acquired rifamycin resistance and the pharmacokinetics of rifabutin and isoniazid among patients with HIV and tuberculosis. Clin Infect Dis. 2005 May 15;40(10):1481-91. doi: 10.1086/429321. Epub 2005 Apr 14.

Reference Type RESULT
PMID: 15844071 (View on PubMed)

Related Links

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http://www.cdc.gov/nchstp/tb/tbtc/

(Click here for more information about the Tuberculosis Trials Consortium (TBTC)

Other Identifiers

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23A

Identifier Type: -

Identifier Source: secondary_id

CDC-NCHSTP-2173

Identifier Type: -

Identifier Source: org_study_id