Anti-HIV Drug Regimens With or Without Protease Inhibitors and Drug Level Monitoring in HIV Infected Adolescents

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. Identifier: NCT00075907
Recruitment Status : Completed
First Posted : January 13, 2004
Last Update Posted : October 7, 2013
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Information provided by (Responsible Party):
National Institute of Allergy and Infectious Diseases (NIAID)

Brief Summary:
The purpose of this study is to compare the effectiveness of anti-HIV drug regimens with or without a protease inhibitor (PI) in HIV infected adolescents. It will also determine if monitoring drug levels and adjusting the dose as necessary improves the effectiveness of these regimens.

Condition or disease Intervention/treatment Phase
HIV Infections Drug: Efavirenz + 2 NRTIs Drug: Lopinavir/Ritonavir + 2 NRTIs Procedure: Therapeutic Drug Monitoring Phase 3

Detailed Description:

HIV infected adolescents may have a significantly higher capacity for immune reconstitution following highly active antiretroviral therapy (HAART), compared to adults. Despite this advantage, HIV infected adolescents are often reluctant to get proper medical care, follow through with doctor appointments, and adhere to medication schedules and regimens necessary to keep their infection under control. Lopinavir/ritonavir (LPV/r), a PI, and efavirenz (EFV), a non-nucleoside reverse transcriptase inhibitor (NNRTI), both have long half-lives that make them ideal drugs for the adolescent population, as they are more forgiving if patients miss or sleep through doses. The availability of once-daily dosing of LPV/r will reduce pill burden and offers more flexibility in medication scheduling, also helping to promote treatment adherence among this age group. This study will examine the effectiveness of two HAART regimens, one with the PI LPV/r and two nucleoside reverse transcriptase inhibitors (NRTIs), and the other with the NNRTI EFV and two NRTIs. The efficacy of therapeutic drug monitoring (TDM) and subsequent dose adjustment will also be assessed with both regimens.

Patients will be enrolled in this study for 96 weeks and will be randomly assigned into one of two groups. Group 1 will receive LPV/r and 2 NRTIs. Treatment naive patients in Group 1 will have the option of receiving either once-daily dosing or twice-daily dosing of LPV/r. Treatment experienced patients will receive twice-daily dosing of LPV/r. Patients on once-daily dosing of LPV/r who become intolerant to the regimen will be permitted to switch to twice-daily dosing. Group 2 will receive EFV and 2 NRTIs. All patients will be independently and simultaneously randomly assigned to undergo either TDM with subsequent dose adjustment if necessary or no TDM.

Patient medical history and physical exam will be conducted at screening, entry, Weeks 2, 4, 8, every 8 weeks until Week 48, and every 12 weeks thereafter. Blood collection will occur at all study visits. Self-reported pill counts and MEMS TrackCap readings (on LPV/r and EFV bottles) will be noted at most visits. Patients will be asked to complete adherence questionnaires at selected study visits.

Patients enrolled in PACTG 390 (Different Combination Regimens and Treatment-Switching Guidelines in HIV Infected Children 18 Years of Age and Younger) are encouraged to coenroll simultaneously in this study and in PACTG 219C (Long-Term Effects of HIV Exposure and Infection in Children).

Study Type : Interventional  (Clinical Trial)
Enrollment : 240 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Comparative Trial of Protease-Containing and Protease-Sparing HAART Regimens in HIV-Infected Adolescents With an Evaluation of Therapeutic Drug Monitoring
Study Start Date : July 2004
Actual Study Completion Date : September 2006

Resource links provided by the National Library of Medicine

MedlinePlus related topics: HIV/AIDS

Primary Outcome Measures :
  1. Proportion of patients achieving viral suppression (viral load less than 1,000 copies/ml) at Week 24 and maintaining suppression through Week 48 while remaining on study treatment

Secondary Outcome Measures :
  1. Proportion of patients achieving virologic suppression (viral load less than 1,000 copies/ml) at Week 24 and maintaining suppression through Week 96 while remaining on study treatment
  2. adherence measured by MEMS TrackCap Monitors (percentage of doses taken, estimated using the frequency of bottle openings recorded by the MEMS TrackCap Monitors, the MEMS TrackCap Monitor tracking form, and the information recorded on the questionnaires)
  3. adherence measured by patient self-report (binary variable of perfect adherence measured 3 days prior to any study visit reported on the adherence questionnaires and the numbers of visits with reported perfect adherence up to Week 24, 48, and 96)
  4. adherence measured by pill count (percentage of pills taken, determined by counting the pills left in the bottles)
  5. HIV viral load at each study visit
  6. number and severity of symptoms of distress and central nervous system (CNS) side effects
  7. number and severity of all adverse events of Grade 3 or more attributed to study treatment
  8. time to virologic failure (first time viral load is measured to be 1,000 copies/ml or more after Week 24, time before discontinuing study treatment for any reason before Week 96, or time before terminating study for any reason before Week 96)
  9. HIV resistance mutations at baseline and at time of virologic failure (viral load returning to 1,000 copies/ml or more)
  10. baseline values for percentage and total number of CD19 (B cells), total T cells (CD3 T cells), CD4 (T helper cells), CD8 (cytotoxic T cells), naive CD4 T cells (CD62L/CD45RA/CD4), and activated CD8 T cells (HLADR/CD38/CD8)
  11. changes from baseline to Weeks 24, 48, and 96 for percentage and total number of CD19 (B cells), total T cells (CD3 T cells), CD4 (T helper cells), CD8 (cytotoxic T cells), naive CD4 T cells (CD62L/CD45RA/CD4), and activated CD8 T cells (HLADR/CD38/CD8)

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Ages Eligible for Study:   13 Years to 23 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • HIV infected
  • HIV RNA viral load of 10,000 copies/ml or more at screening
  • Weigh 35 kg (77.2 lbs) or more
  • HAART naive or received a single regimen of combination therapy consisting of NRTIs with or without a single PI (except LPV). Patients who received zidovudine monotherapy during pregnancy or used low-dose ritonavir (RTV) as a PI boost are not excluded.
  • For PI experienced patients, have sensitivity to LPV at screening
  • Able to receive, as part of background HAART chosen by their physician, at least one new NRTI that is likely to be active against the patient's virus and unlikely to have cross-resistance with previously used NRTIs
  • Willing to use acceptable forms of contraception
  • Parent or legal guardian willing to provide informed consent, if applicable

Exclusion Criteria:

  • Prior receipt of any NNRTI or LPV
  • Require certain medications
  • Grade 3 or 4 clinical or laboratory toxicity, as defined by the Division of AIDS Toxicity Table for Grading Severity of Pediatric Adverse Effects
  • Chemotherapy for active malignancy
  • Acute opportunistic or serious bacterial infection requiring therapy at study entry
  • Investigational treatment within 30 days of study entry
  • Score of 20 or more on Beck Depression Inventory (BDI-II) or suicidal thoughts on BDI-II (score of 2 or 3 on Question 9), regardless of total score
  • Pregnant within 48 hours of starting EFV
  • Breastfeeding

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 identifier (NCT number): NCT00075907

United States, California
Usc La Nichd Crs
Alhambra, California, United States, 91803
Long Beach Memorial Med. Ctr., Miller Children's Hosp.
Long Beach, California, United States, 90806
Children's Hospital of Los Angeles NICHD CRS
Los Angeles, California, United States, 90027
United States, Colorado
Univ. of Colorado Denver NICHD CRS
Aurora, Colorado, United States, 80045
United States, Illinois
Chicago Children's CRS
Chicago, Illinois, United States, 60614
United States, Louisiana
Tulane/LSU Maternal/Child CRS
New Orleans, Louisiana, United States, 70112
Children's Hosp.
New Orleans, Louisiana, United States, 70118
United States, Maryland
Johns Hopkins Hosp. & Health System - Dept. of Peds., Div. of Infectious Diseases
Baltimore, Maryland, United States, 21287
United States, New York
Bronx-Lebanon Hosp. IMPAACT CRS
Bronx, New York, United States, 10457
Stony Brook, New York, United States, 11794
United States, Tennessee
Memphis, Tennessee, United States, 38105
United States, Texas
Children's Med. Ctr. Dallas
Dallas, Texas, United States, 75235
Texas Children's Hosp. CRS
Houston, Texas, United States, 77030
Sponsors and Collaborators
National Institute of Allergy and Infectious Diseases (NIAID)
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Study Chair: Margarita Silio, MD Tulane Medical Center
Study Chair: Russell Van Dyke, MD Tulane Medical Center

Additional Information:

Responsible Party: National Institute of Allergy and Infectious Diseases (NIAID) Identifier: NCT00075907     History of Changes
Other Study ID Numbers: PACTG P1034
First Posted: January 13, 2004    Key Record Dates
Last Update Posted: October 7, 2013
Last Verified: October 2013

Keywords provided by National Institute of Allergy and Infectious Diseases (NIAID):
Acute Infection
Treatment Experienced
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
Protease Inhibitors
HIV Protease Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Anti-HIV Agents
Anti-Retroviral Agents
Antiviral Agents
Anti-Infective Agents
Cytochrome P-450 CYP3A Inhibitors
Cytochrome P-450 Enzyme Inhibitors
Reverse Transcriptase Inhibitors
Nucleic Acid Synthesis Inhibitors
Cytochrome P-450 CYP2C9 Inhibitors
Cytochrome P-450 CYP2C19 Inhibitors
Cytochrome P-450 CYP2B6 Inducers
Cytochrome P-450 Enzyme Inducers
Cytochrome P-450 CYP3A Inducers