Effect of Gender and HIV Infection on Zidovudine and Lamivudine Pharmacokinetics

March 2, 2020 updated by: University of Colorado, Denver

Sex and Disease Dependent Nucleoside Analog Toxicity

This study evaluated the blood and blood cell concentrations of zidovudine and lamivudine in men versus women and in those with versus without HIV infection. Additionally, markers of side effects were correlated with blood levels of the drugs. The hypothesis was that women and those with HIV would have higher drug levels, as well as markers of side effects.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

43

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Colorado
      • Aurora, Colorado, United States, 80045
        • University of Colorado Denver and Health Sciences Center

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

Ages Eligible for Study

18 years to 55 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Documented physician-diagnosed HIV-infection (HIV+ antibody or plasma HIV-RNA+); HIV-negative volunteers must have a negative HIV-ELISA.
  • Age 18 to 55 years;
  • Either antiretroviral naïve, or no HIV-therapy in the preceding 6 months;
  • Planned antiretroviral regimen includes standard doses of ZDV plus 3TC as part of the antiretroviral regimen. Once- or twice-daily 3TC will be allowed.

Exclusion Criteria:

  • Any medical condition that in the opinion of the investigators would jeopardize the intent of the study.
  • In the opinion of the investigator, any concomitant immunomodulatory medications, chemotherapeutic agents, investigational drugs, and alternative therapies, including, glucocorticoids, recombinant growth factors or cytokines (e.g. Granulocyte-macrophage colony-stimulating factor, Granulocyte colony-stimulating factor, interferon-alpha or gamma, human growth hormone, etc), ribavirin, birth-control pills, and sex hormones that could interfere with the cellular pharmacology of the study medications;
  • Concomitant medications that interfere with renal drug clearances including, tenofovir, adefovir, cidofovir, ganciclovir, probenecid, or any similarly problematic medication in the opinion of the investigators;
  • Concomitant warfarin or daily aspirin (to prevent excess bleeding from biopsy).
  • Pregnancy or a plan to become pregnant, or menopause;
  • Any > or = grade II abnormality in hemoglobin, absolute neutrophil count, routine liver function tests, serum creatinine, or other organ function abnormalities.
  • Any medical or personal condition that, in the judgment of the investigators, may influence the subject's ability to comply with study conditions, such as active mental illnesses, or plans to leave the geographical area.
  • Inability to give informed consent.
  • Triple nucleoside analog reverse transcriptase regimens.

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: Other
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: HIV-negative
This group was used to compare intracellular ZDV- and 3TC-triphosphate concentrations to the HIV-infected group and in men versus women.
Drug: zidovudine 300mg and lamivudine 150mg as Combivir
twice daily for 12 days in the HIV-negative group and indefinitely for their care in the HIV-positive group
Active Comparator: HIV-infected
This group was started on ZDV-3TC based therapy. Intracellular ZDV- and 3TC-triphosphate concentrations were compared in men versus women and the HIV-negative group.
Drug: zidovudine 300mg and lamivudine 150mg as Combivir
twice daily for 12 days in the HIV-negative group and indefinitely for their care in the HIV-positive group

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
ZDV-TP Drug Levels Compared Between HIV Negative and HIV Infected Subject
Time Frame: Day 12 of dosing
To compare ZDV- triphosphate concentrations in HIV-negative versus HIV-infected subjects.
Day 12 of dosing
3TC-TP Drug Levels Compared Between HIV Negative and HIV Infected Subject
Time Frame: Day 12 of dosing
To compare 3TC- triphosphate concentrations in HIV-negative versus HIV-infected subjects.
Day 12 of dosing

Collaborators and Investigators

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

Sponsor

University of Colorado, Denver

Collaborators

National Institute of Allergy and Infectious Diseases (NIAID)
University of Hawaii

Investigators

  • Principal Investigator: Peter L. Anderson, PharmD, University of Colorado Denver and Health Sciences Center

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.

General Publications

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

May 1, 2005

Primary Completion (Actual)

July 1, 2008

Study Completion (Actual)

July 1, 2010

Study Registration Dates

First Submitted

June 28, 2011

First Submitted That Met QC Criteria

June 30, 2011

First Posted (Estimate)

July 1, 2011

Study Record Updates

Last Update Posted (Actual)

March 16, 2020

Last Update Submitted That Met QC Criteria

March 2, 2020

Last Verified

March 1, 2020

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 04-1101
  • R01AI064029 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

No plan to share.

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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