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

Sponsors and Collaborators:	Centers for Disease Control and Prevention Department of Veterans Affairs
Information provided by:	Centers for Disease Control and Prevention
ClinicalTrials.gov Identifier:	NCT00023348

Purpose

Primary Objectives:

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

Secondary Objectives:

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

Condition	Intervention	Phase
HIV Infections Tuberculosis	Drug: Isoniazid Drug: Rifabutin	Phase II Phase III

MedlinePlus related topics: AIDS Tuberculosis

Drug Information available for: Isoniazid Rifabutin Ftivazide

U.S. FDA Resources

Study Type:	Interventional
Study Design:	Treatment, Non-Randomized, Open Label, Historical Control, Single Group Assignment, Pharmacokinetics Study
Official Title:	TBTC Study 23A: Pharmacokinetics of Intermittent Isoniazid and Rifabutin in USPHS Study 23: Treatment of HIV-Related Tuberculosis Using a Rifabutin-Based Regimen

Further study details as provided by Centers for Disease Control and Prevention:

Primary Outcome Measures:

To determine the proportion of patients with HIV-related tuberculosis who have abnormal pharmacokinetics of isoniazid and rifabutin.

Secondary Outcome Measures:

1) To determine risk factors for abnormal pharmacokinetics of 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.

Estimated Enrollment:	150
Study Start Date:	July 1999
Estimated Study Completion Date:	November 2002

Detailed Description:

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).

Eligibility

Ages Eligible for Study:	18 Years and older
Genders Eligible for Study:	Both
Accepts Healthy Volunteers:	No

Criteria

Inclusion:

Patient enrolled in TBTC Study 23
Informed consent

Exclusion:

1. Severe anemia (Hct <25%)

Contacts and Locations

Please refer to this study by its ClinicalTrials.gov identifier: NCT00023348

Show 23 Study Locations

Sponsors and Collaborators

Centers for Disease Control and Prevention

Department of Veterans Affairs

Investigators

Principal Investigator:

Marc Weiner, MD

Audie L. Murphy VA Medical Center, San Antonio TX

More Information

Additional Information:

(Click here for more information about the Tuberculosis Trials Consortium (TBTC) This link exits the ClinicalTrials.gov site

Publications:

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. Epub 2005 Apr 14.

Study ID Numbers:	CDC-NCHSTP-2173, 23A
Study First Received:	September 6, 2001
Last Updated:	September 9, 2005
ClinicalTrials.gov Identifier:	NCT00023348 History of Changes
Health Authority:	United States: Federal Government; United States: Food and Drug Administration

Keywords provided by Centers for Disease Control and Prevention:

Tuberculosis
TB

Study placed in the following topic categories:

Antimetabolites
Bacterial Infections
Sexually Transmitted Diseases, Viral
Rifabutin
Antilipemic Agents
Acquired Immunodeficiency Syndrome
Immunologic Deficiency Syndromes
Virus Diseases
Anti-Bacterial Agents

Gram-Positive Bacterial Infections
HIV Infections
Sexually Transmitted Diseases
Mycobacterium Infections
Tuberculosis
Antitubercular Agents
Retroviridae Infections
Isoniazid

Additional relevant MeSH terms:

Bacterial Infections
Antimetabolites
Anti-Infective Agents
Sexually Transmitted Diseases, Viral
Slow Virus Diseases
Rifabutin
Molecular Mechanisms of Pharmacological Action
Infection
Anti-Bacterial Agents
Gram-Positive Bacterial Infections
Therapeutic Uses
Tuberculosis
Retroviridae Infections
Isoniazid
RNA Virus Infections

Immune System Diseases
Antilipemic Agents
Acquired Immunodeficiency Syndrome
Immunologic Deficiency Syndromes
Actinomycetales Infections
Pharmacologic Actions
Antibiotics, Antitubercular
Virus Diseases
HIV Infections
Sexually Transmitted Diseases
Lentivirus Infections
Mycobacterium Infections
Antitubercular Agents
Fatty Acid Synthesis Inhibitors

ClinicalTrials.gov processed this record on May 06, 2009