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Pharmacokinetics of Emtricitabine/Tenofovir/Efavirenz in HIV-infected Patients With Tuberculosis (PETE)

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified December 2008 by African Poverty Related Infection Oriented Research Initiative.
Recruitment status was:  Recruiting
ClinicalTrials.gov Identifier:
First Posted: May 17, 2007
Last Update Posted: December 17, 2010
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Radboud University
Kilimanjaro Christian Medical Centre, Tanzania
Information provided by:
African Poverty Related Infection Oriented Research Initiative
In this pilot study the pharmacokinetics and safety of the antiretroviral combination of co-formulated emtricitabine/tenofovir/efavirenz will be studied in HIV-positive patients with pulmonary tuberculosis (TB) who are concomitantly treated with a standard rifampin-containing tuberculostatic regimen. It is expected that this antiretroviral combination causes minimal drug interactions with the rifampin-containing anti-tuberculosis medication.

Condition Intervention Phase
Tuberculosis HIV Infections Drug: Emtricitabine/tenofovir/efavirenz Phase 2

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: The Pharmacokinetics of Co-formulated Emtricitabine/Tenofovir/Efavirenz in HIV-infected Patients With Smear-positive Pulmonary Tuberculosis in the Kilimanjaro Region, Tanzania

Resource links provided by NLM:

Further study details as provided by African Poverty Related Infection Oriented Research Initiative:

Primary Outcome Measures:
  • Pharmacokinetic parameters of emtricitabine, tenofovir and efavirenz [ Time Frame: Two 24 hour pharmacokinetic (PK) curves (week 8 and 28) ]
  • Pharmacokinetic parameters of the tuberculostatic agents [ Time Frame: Pharmacokinetic (PK) samples at 2 hours and 6 hours postdose (week 2 and 8) ]

Secondary Outcome Measures:
  • Biochemistry and haematology samples for safety [ Time Frame: Samples at screening, baseline, week 2, 4, 6, 8, 12, 16, 24, 28 ]
  • Questioning about occurrence of adverse events [ Time Frame: At baseline, week 2, 4, 6, 8, 12, 16, 24, 28 ]
  • CD4 count and HIV-1 RNA [ Time Frame: At screening, week 4, week 16 and week 28 ]
  • Sputum staining and culture [ Time Frame: At screening, week 4, 8, and 28 ]

Estimated Enrollment: 30
Study Start Date: November 2008
Estimated Study Completion Date: December 2009
Estimated Primary Completion Date: December 2009 (Final data collection date for primary outcome measure)
Intervention Details:
    Drug: Emtricitabine/tenofovir/efavirenz

    Co-formulated in one tablet (taken once daily by oral administration):

    • emtricitabine 200 mg
    • tenofovir DF 300 mg
    • efavirenz 600 mg
Detailed Description:

The primary objectives of this pilot study in 30 patients are:

  1. To determine the effect of rifampin-containing tuberculostatic treatment on the pharmacokinetic profile of emtricitabine+tenofovir+efavirenz, when co-formulated in one tablet, in HIV-infected patients with smear-positive pulmonary tuberculosis in Tanzania.
  2. To determine the effect of the emtricitabine+tenofovir+efavirenz regimen on the pharmacokinetics of tuberculostatics in the same population.

The secondary objectives are:

  1. To determine the safety of co-administration of emtricitabine+tenofovir+efavirenz with treatment for smear-positive pulmonary tuberculosis.
  2. To determine the short-term (24 weeks) virological efficacy on HIV of an emtricitabine+tenofovir+efavirenz regimen in patients with smear-positive pulmonary tuberculosis.
  3. To determine the short-term bacteriological efficacy on smear-positive tuberculosis of the co-administration of a standard regimen for tuberculosis and an emtricitabine+tenofovir+efavirenz regimen.

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • A smear-positive pulmonary tuberculosis, based on positive smear of at least two sputum samples with Ziehl-Neelsen (ZN) staining.
  • HIV-infected as documented by positive HIV antibody test.
  • Subject is at least 18 years of age at the day of the first dosing of study medication.
  • Subject is able and willing to sign the Informed Consent Form prior to screening evaluations.
  • CD4 cell count > 50 copies/mm3.
  • Karnofsky score > 40.
  • Willing and able to regularly attend the Kibung'oto National Tuberculosis Hospital (KNTH) clinic.

Exclusion Criteria:

  • History of sensitivity/idiosyncrasy to the drug or chemically related compounds or excipients, which may be employed in the trial.
  • Previously treated for HIV infection with antiretroviral agents.
  • Pregnant or breastfeeding.
  • Relevant history or current condition that might interfere with drug absorption, distribution, metabolism or excretion.
  • A history of severe psychiatric disease such as psychosis, schizophrenia, etc.
  • Inability to understand the nature and extent of the trial and the procedures required.
  • Abnormal serum transaminases or creatinine, determined as levels being > 5 times upper limit of normal.
  • Active hepatobiliary or hepatic disease (Non B Chronic Hepatitis B/C co-infection is allowed).
  • CD4 cell count > 350 cells/mm3.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00474435

Contact: Gibson Kibiki, MMed, PhD +255 754 572767 gkibiki@gmail.com
Contact: Jossy van den Boogaard, MD +255 787 148431 jossyvandenboogaard@gmail.com

Kibong'oto National Tuberculosis Hospital Recruiting
Moshi, Kilimanjaro Region, Tanzania, P.O. Box 12
Contact: Liberate Mleoh, MD    027 2756194    lmleoh@yahoo.com   
Principal Investigator: Gibson Kibiki, MMed, PhD         
Sub-Investigator: Elton Kisanga, B-Pharm, PhD         
Sub-Investigator: Liberate Mleoh, MD         
Sub-Investigator: Jossy van den Boogaard, MD         
Sub-Investigator: Hadija Semvua, B-Pharm, MPH         
Sub-Investigator: Charles Mtabho, MD, MPH         
Sponsors and Collaborators
African Poverty Related Infection Oriented Research Initiative
Radboud University
Kilimanjaro Christian Medical Centre, Tanzania
Principal Investigator: Martin Boeree, MD, PhD University Lungcentre Dekkerswald, Groesbeek / University Medical Centre Nijmegen, the Netherlands
Principal Investigator: David Burger, PharmD, PhD University Medical Centre Nijmegen, the Netherlands
Principal Investigator: Gibson Kibiki, MMed, PhD Kilimanjaro Christian Medical Centre,Moshi,Tanzania
  More Information

Bowen EF, Rice PS, Cooke NT, Whitfield RJ, Rayner CF. HIV seroprevalence by anonymous testing in patients with Mycobacterium tuberculosis and in tuberculosis contacts. Lancet. 2000 Oct 28;356(9240):1488-9.
Msamanga GI, Fawzi WW. The double burden of HIV infection and tuberculosis in sub-Saharan Africa. N Engl J Med. 1997 Sep 18;337(12):849-51.
Dean GL, Edwards SG, Ives NJ, Matthews G, Fox EF, Navaratne L, Fisher M, Taylor GP, Miller R, Taylor CB, de Ruiter A, Pozniak AL. Treatment of tuberculosis in HIV-infected persons in the era of highly active antiretroviral therapy. AIDS. 2002 Jan 4;16(1):75-83.
Burman WJ, Gallicano K, Peloquin C. Comparative pharmacokinetics and pharmacodynamics of the rifamycin antibacterials. Clin Pharmacokinet. 2001;40(5):327-41. Review.
Finch CK, Chrisman CR, Baciewicz AM, Self TH. Rifampin and rifabutin drug interactions: an update. Arch Intern Med. 2002 May 13;162(9):985-92. Review.
López-Cortés LF, Ruiz-Valderas R, Viciana P, Alarcón-González A, Gómez-Mateos J, León-Jimenez E, Sarasanacenta M, López-Pua Y, Pachón J. Pharmacokinetic interactions between efavirenz and rifampicin in HIV-infected patients with tuberculosis. Clin Pharmacokinet. 2002;41(9):681-90.
Burger DM, Meenhorst PL, Koks CH, Beijnen JH. Pharmacokinetic interaction between rifampin and zidovudine. Antimicrob Agents Chemother. 1993 Jul;37(7):1426-31.
Gallicano KD, Sahai J, Shukla VK, Seguin I, Pakuts A, Kwok D, Foster BC, Cameron DW. Induction of zidovudine glucuronidation and amination pathways by rifampicin in HIV-infected patients. Br J Clin Pharmacol. 1999 Aug;48(2):168-79.
Friedland G, Abdool Karim S, Abdool Karim Q, Lalloo U, Jack C, Gandhi N, El Sadr W. Utility of tuberculosis directly observed therapy programs as sites for access to and provision of antiretroviral therapy in resource-limited countries. Clin Infect Dis. 2004 Jun 1;38 Suppl 5:S421-8.
Droste JA, Aarnoutse RE, Koopmans PP, Hekster YA, Burger DM. Evaluation of antiretroviral drug measurements by an interlaboratory quality control program. J Acquir Immune Defic Syndr. 2003 Mar 1;32(3):287-91.
Holland DT, DiFrancesco R, Stone J, Hamzeh F, Connor JD, Morse GD; Adult and Pediatric AIDS Clinical Trials Group Pharmacology Laboratory Committees, Pediatric AIDS Clinical Trials Group. Quality assurance program for clinical measurement of antiretrovirals: AIDS clinical trials group proficiency testing program for pediatric and adult pharmacology laboratories. Antimicrob Agents Chemother. 2004 Mar;48(3):824-31.
Marzolini C, Telenti A, Decosterd LA, Greub G, Biollaz J, Buclin T. Efavirenz plasma levels can predict treatment failure and central nervous system side effects in HIV-1-infected patients. AIDS. 2001 Jan 5;15(1):71-5.

Responsible Party: Martin Boeree, University Lungcentre Dekkerswald, Groesbeek, the Netherlands
ClinicalTrials.gov Identifier: NCT00474435     History of Changes
Other Study ID Numbers: UMCN-AKF 04.03
First Submitted: May 16, 2007
First Posted: May 17, 2007
Last Update Posted: December 17, 2010
Last Verified: December 2008

Keywords provided by African Poverty Related Infection Oriented Research Initiative:
Treatment Naive

Additional relevant MeSH terms:
HIV Infections
Lentivirus Infections
Retroviridae Infections
RNA Virus Infections
Virus Diseases
Sexually Transmitted Diseases, Viral
Sexually Transmitted Diseases
Immunologic Deficiency Syndromes
Immune System Diseases
Mycobacterium Infections
Actinomycetales Infections
Gram-Positive Bacterial Infections
Bacterial Infections
Emtricitabine, Tenofovir Disoproxil Fumarate Drug Combination
Antiviral Agents
Anti-Infective Agents
Reverse Transcriptase Inhibitors
Nucleic Acid Synthesis Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Anti-Retroviral Agents
Anti-HIV Agents
Cytochrome P-450 CYP2C9 Inhibitors
Cytochrome P-450 Enzyme Inhibitors
Cytochrome P-450 CYP2C19 Inhibitors
Cytochrome P-450 CYP2B6 Inducers

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