Investigation of the Potential Pharmacokinetic Interaction Between Nevirapine, Abacavir and Amprenavir in HIV-1 Infected Non-Nucleoside Reverse Transcriptase Inhibitor (NNRTI) Naive Adults

July 11, 2014 updated by: Boehringer Ingelheim

An Investigation of the Potential Pharmacokinetic Interaction Between Nevirapine (VIRAMUNE®), Abacavir and Amprenavir in HIV-1 Infected NNRTI Naive Adults

Study to determine the effects of 28 days of nevirapine treatment on the steady-state pharmacokinetics of amprenavir and of abacavir and to further evaluate the pharmacokinetics of nevirapine in combination with amprenavir and abacavir compared to historical controls treated with nevirapine but without amprenavir or abacavir. In addition safety/tolerance of nevirapine, amprenavir and abacavir was to be assessed based on adverse events and clinical laboratory data.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
8

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 65 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Male or female patients between the ages of 18 and 65 years, inclusive;
  • Plasma HIV-1 RNA >= 5000 copies/mL, documenting HIV-1 infection
  • CD4+ cell count >= 100 cells/mm³

  • Patients who met the following laboratory parameter:

    • Lymphocyte count >= 1000 cells/mm³
    • Hemoglobin >= 9.0 g/dl (men and women)
    • Platelet count >= 75000 cells/mm3
    • Alkaline Phosphatase <= 3.0 times the upper limit of normal
    • Serum Glutamic-Oxaloacetic Transaminase (SGOT) and Serum Glutamic-Pyruvic Transaminase (SGPT) <= 3.0 times the upper limit of normal
    • Total bilirubin <= 1.5 times the upper limit of normal
    • Creatinine <= 2mg/dL
  • Female patients of reproductive potential had to be willing to use a reliable method of double-barrier contraception (such as diaphragm with spermicidal cream or jelly, or condoms with spermicidal foam)
  • Patients who were informed of and willing and able to comply with the investigational nature of the study and had signed a written consent in accordance with institutional and federal guidelines

Exclusion Criteria:

  • Female patients who were pregnant or breast-feeding
  • Female patients who intended to change their double-barrier contraception method within 28 days prior to Study Day 0 and throughout the trial
  • Patients who in the opinion of the investigator required treatment with a prohibited medication during the study including the potentially toxic substrates such as terfenadine, bepridil, astemizole, cisapride, triazolam, midazolam and ergotamine/dihydroergotamine containing regimes
  • Patients taking known inhibitors or inducers of Cytochrome P450 metabolic enzymes including macrolide antibiotics (erythromycin, clarithromycin, azithromycin) azole antifungals (fluconazole, itraconazole) and phenytoin within 28 days prior or Study day 0 and throughout the trial
  • Patients receiving immunomodulatory agents
  • Ketoconazole, rifabutin and rifampin were excluded during screening and throughout the trial
  • Patients with previous exposure to anti-retroviral, such as delavirdine, loviride, efavirenz, nevirapine, abacavir, saquinavir, ritonavir, indinavir, nelfinavir, amprenavir, zidovudine, Lamivudine (3TC), Stavudine (d4T), Didanosine (ddI) and Zalcitabine (ddC)
  • Patients receiving any investigational drug or systemic corticosteroids within 30 days of the first dose of study medication and system corticosteroids initially as well as throughout the study and any antineoplastic agent of radiotherapy other than local skin radiotherapy treatment within 12 weeks before starting study medication
  • Patients with malabsorption, severe chronic diarrhea or patients unable to maintain adequate oral intake
  • Patients currently abusing alcohol or substance abusing; patients on methadone substitution programs might be considered for inclusion in the trial
  • Patients undergoing treatment for an active infection
  • Patients with hepatic insufficiency due to cirrhosis
  • Patients with renal insufficiency
  • Patients who were heavy smokers (e.g. > 20 cigarettes per day)
  • Patients whose reliability was deemed to put them at risk for non-compliance with the study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: NON_RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: NONE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
EXPERIMENTAL: Nevirapine

Part I: Study days 15-43

Part II: Study day 44 to end of trial
Drug: Nevirapine
ACTIVE_COMPARATOR: Amprenavir

Part I: Study days 0 to 43

Part II: Study day 44 to end of trial
Drug: Amprenavir
ACTIVE_COMPARATOR: Abacavir

Part I: Study days 0 to 43

Part II Study day 44 to end of trial
Drug: Abacavir

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
AUC (area under plasma concentration time curve) of amprenavir in the absence and presence of nevirapine
Time Frame: Day 14, day 43
Day 14, day 43
Cmax (maximum observed concentration of the analyte in plasma) of amprenavir in the absence and presence of nevirapine
Time Frame: Day 14, day 43
Day 14, day 43
AUC (area under plasma concentration time curve) of abacavir in the absence and presence of nevirapine
Time Frame: Day 14, day 43
Day 14, day 43
Cmax (maximum observed concentration of the analyte in plasma) of abacavir in the absence and presence of nevirapine
Time Frame: Day 14, day 43
Day 14, day 43

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Change from baseline in HIV-1 Ribonucleic Acid (RNA)
Time Frame: Baseline, day 14, 21, 28, 35, 43 (Part I), up to 168 days (Part II)
Baseline, day 14, 21, 28, 35, 43 (Part I), up to 168 days (Part II)
Change from baseline in Lymphocytes Expressing CD4+ cell count
Time Frame: Baseline, day 14, 21, 28, 35, 43 (Part I), up to 168 days (Part II)
Baseline, day 14, 21, 28, 35, 43 (Part I), up to 168 days (Part II)
Proportion of patients who achieved RNA levels below limit of quantification (BLoQ) (responders)
Time Frame: up to 43 days (Part I), up to 168 days (Part II)
up to 43 days (Part I), up to 168 days (Part II)
Number of patients with adverse events
Time Frame: up to 240 days
up to 240 days
Number of patients with abnormal changes in laboratory parameters
Time Frame: Baseline, day 14, 28, 43 (Part I), up to 168 days (Part II)
Baseline, day 14, 28, 43 (Part I), up to 168 days (Part II)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Boehringer Ingelheim

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 1, 1999

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 1, 2001

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 3, 2014

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 3, 2014

First Posted (ESTIMATE)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 8, 2014

Study Record Updates

Last Update Posted (ESTIMATE)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 14, 2014

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 11, 2014

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2014

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 1100.1244

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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