A Two Year Study of the Clinical Efficacy of the Combination of Emtricitabine, Tenofovir, and Nevirapine

This study has been completed.
Sponsor:
Collaborator:
Boehringer Ingelheim
Information provided by (Responsible Party):
Charles E. Davis, Jr. MD, University of Maryland
ClinicalTrials.gov Identifier:
NCT00344461
First received: June 22, 2006
Last updated: August 3, 2012
Last verified: August 2012
  Purpose

Open label, two year study of the clinical efficacy of the combination of FTC, Tenofovir, and Nevirapine. Sixty HIV infected patients without previous exposure to antiretroviral therapy will be enrolled. Study will include a pharmacokinetic substudy to evaluate the interaction of FTC and Nevirapine. Truvada may be used.


Condition Intervention Phase
HIV
Drug: Nevirapine, FTC, and Tenofovir
Phase 4

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Cell Cycle Independent Antiretroviral Therapy: Combination of Nevirapine, FTC, and Tenofovir

Resource links provided by NLM:


Further study details as provided by University of Maryland:

Primary Outcome Measures:
  • The primary endpoint will be evidence of viral failure as determined by two consecutive viral load measurements of >500 copies/ml. [ Time Frame: In this study, a virologic failure is defined as failure to reach a viral load <500 copies/ml at the week 24 visit, or having 2 consecutive viral loads >500 copies/ml after week 24 ] [ Designated as safety issue: Yes ]

Secondary Outcome Measures:
  • proportion of patients with grade 2, 3 and 4 adverse events and laboratory toxicities [ Time Frame: Protocol length is 96 weeks ] [ Designated as safety issue: Yes ]
  • proportion of patients with plasma HIV RNA < 50 copies/mL [ Time Frame: 96 weeks. ] [ Designated as safety issue: Yes ]
  • proportion of patients with plasma HIV RNA < 400 copies/mL [ Time Frame: 96 weeks ] [ Designated as safety issue: No ]
  • change from baseline in plasma HIV RNA at 24, 48, 72, and 96 weeks [ Time Frame: Weeks 24, 48, 72,96 ] [ Designated as safety issue: Yes ]
  • changes in CD4 cell counts, in each group, from baseline, and at weeks 24, 48, 72, and 96 [ Time Frame: Weeks 24, 48, 72, 96 ] [ Designated as safety issue: Yes ]
  • changes in Mitochondrial DNA to Cellular DNA ratio [ Time Frame: Weeks 24, 48, 72, 96 ] [ Designated as safety issue: No ]

Enrollment: 54
Study Start Date: March 2004
Study Completion Date: July 2008
Primary Completion Date: July 2008 (Final data collection date for primary outcome measure)
Intervention Details:
    Drug: Nevirapine, FTC, and Tenofovir
    One arm only - Open label using FTC 200 mg p.o. qd, and Tenofovir 300 mg p.o. qd, and Nevirapine 200 mg b.i.d.
Detailed Description:

Description of study design This is an open-labeled clinical trial evaluating an antiretroviral treatment regimen in which the drugs have demonstrated in vitro activity in both, resting and activated mononuclear cells. These drugs include: FTC 200 mg p.o. qd, and Tenofovir 300 mg p.o. qd, and Nevirapine 200 mg b.i.d.

Eligible patients must be at least 18 years of age, be referred by their primary HIV provider for antiretroviral therapy or if the patient is self referred, have a CD4 cell count of < 250/mm3 and have a viral load >5,000c/ml. Eligibility requirement for women is that they must have a CD4 cell count of <250 at the time of enrollment. This cutoff for women is based on unpublished data that there may be increased hepatotoxicity in women with a CD4 cell count > 250 cell/mm3. The screening evaluation will take place the day the informed consent is signed. During that screening evaluation, the patient will undergo a history and physical examination, and will have study labs drawn. Within 60 days of the screening evaluation and meeting all eligible criteria, the patient will be placed on the study treatment regimen. Patients will be evaluated at the clinic on Day 0 (therapy initiation), weeks 2, 4, 6, 8, 12, 16, and then every 8 weeks until 48 weeks and thereafter every 12 weeks through week 96. At the end of the study, all patients may continue their current antiretroviral treatment regimen at the discretion of the patient and their primary care provider.

Pharmacokinetic Analysis Sub Study A pharmacokinetic evaluation will be performed in first 7 volunteers to assess the impact of FTC on Nevirapine and vice versa. Pharmacokinetic analysis will be performed at end of week 2 ( day 14) during 200mg qd start up period. Samples will be obtained at baseline and 1, 3, 6, 12 and 24 hours post Nevirapine dosing. Pharmacokinetic analysis will be repeated at the week 8 visit. Samples will be obtained at baseline and 1, 3, 6, 12 and 24 hours post Nevirapine.

Assignment of patients There will be 60 patients involved in this clinical trial. This is an open-labeled study. There are no placebos involved in this study.

Dose and dose selection The dosages of medications are those that are currently used as standard clinical practice: Nevirapine 200 mg b.i.d. (1-200 mg tablet b.i.d.); Emtricitabine (FTC) 200mg po qd.(1-200mg capsule); Tenofovir 300 mg once-a-day (1-300 mg tablet qd).

Justification of study design All study patients require treatment for their HIV infection. All of the drugs used in this study are FDA-Approved. Tenofovir and FTC are approved as a once-a-day treatment medication. Nevirapine (NVP) is approved for BID dosing.

NOTE: That whenever Nevirapine is being prescribed, there will be a lead-in period of 14 days in which Nevirapine will be prescribed as 200 mg once a day followed by 200 mg BID as is the recommended standard of care.

  Eligibility

Ages Eligible for Study:   18 Years to 75 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  1. HIV-1 infection, as documented by any licensed ELISA test kit, and confirmed by Western blot, positive HIV-1 blood culture, positive HIV serum antigen, or plasma viremia at any time prior to study entry. If no record exists, testing must occur at screening.
  2. Male or female, age 18 to 75 years of age.
  3. Able to sign the informed consent, and is willing to comply with the requirements of this clinical trial.
  4. Available for at least 96 weeks of follow up.
  5. Males: deemed a candidate for antiretroviral therapy per referring primary care provider. (If patient is self referred, CD4 cell count must be <400 cells/mm3 and viral load>5,000c/ml) Females: CD4 cell count must be less than 250 cells/mm3 and viral load >5,000 c/mL at time of enrollment.
  6. If female and of child bearing potential must consent to using at least two forms of contraception.
  7. Participants will be "treatment naive" as no prior antiretroviral therapy or antiretroviral therapy for less than 7 days in the past.

Exclusion Criteria:

  1. Evidence of mutation associated with primary drug resistance to Nevirapine (K103N, Y181C, Y188L, G190S), Tenofovir (M41L, T69 insertion, Q151M, L210W,and K65R), and/or FTC (184V) previously documented, or at time of screening.
  2. Patients with any of the following laboratory parameters at the screening visit: estimated creatinine clearance of <60 ml/min; aspartate aminotransferase (AST) or alanine aminotransferase (ALT) >2.5 times the upper limits of normal; total bilirubin >1.5 mg/dL.
  3. Women with CD4 cell count > 250 cells/ mm3 at time of entry or in males with a CD4 cell count less than 400/mm3, along with a viral load greater than 5,000c/ml. for both males and females.
  4. Pregnant women or women who are breast feeding.
  5. Unwillingness to use effective barrier contraception.
  6. Patients with current alcohol abuse or illicit drug use that in the opinion of the Principal Investigator may interfere with the patient's ability to comply with the protocol requirements.
  7. Patients with malabsorption or severe chronic diarrhea for more than 30 days.
  8. Current treatment for malignancy other than basal or squamous cell carcinoma of the skin or carcinoma in situ of the cervix.
  9. History of any chronic illness or other condition that in the opinion of the investigator would interfere with the conduct or completion of the study.
  10. Patient who is, in the opinion of the investigator, unable to complete the 96-week dosing period and protocol evaluations and assessments.
  11. Experimental vaccines, to include HIV vaccines.
  12. Patient who is currently enrolled in an experimental protocol, or is receiving an experimental medication.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00344461

Locations
United States, Maryland
University of Maryland, Institute of Human Virology
Baltimore, Maryland, United States, 21201
Sponsors and Collaborators
University of Maryland
Boehringer Ingelheim
Investigators
Principal Investigator: Robert R Redfield, MD University of Maryland, School of Medicine, IHV
Principal Investigator: Charles E Davis, MD University of Maryland, School of Medicine, IHV
  More Information

No publications provided by University of Maryland

Additional publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Charles E. Davis, Jr. MD, Principal Investigator, University of Maryland
ClinicalTrials.gov Identifier: NCT00344461     History of Changes
Other Study ID Numbers: H-23783
Study First Received: June 22, 2006
Last Updated: August 3, 2012
Health Authority: United States: Institutional Review Board
United States: Food and Drug Administration

Additional relevant MeSH terms:
Nevirapine
Tenofovir
Tenofovir disoproxil
Anti-HIV Agents
Anti-Retroviral Agents
Antiviral Agents
Anti-Infective Agents
Therapeutic Uses
Pharmacologic Actions
Reverse Transcriptase Inhibitors
Nucleic Acid Synthesis Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action

ClinicalTrials.gov processed this record on July 28, 2014