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HIV InfectionPhase 2PRADANCT00943540

Pharmacokinetic and Safety Study of Raltegravir and Atazanavir in a Once Daily Dose Regimen in HIV-1 Infected Patients

A Phase 2 study testing raltegravir QD, atazanavir and lamivudine (or emtricitabine) in people with HIV Infection and HIV Infections, run by Radboud University Medical Center at 4 sites in 2 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The licensed dose of raltegravir is 400 mg twice daily with or without food. Raltegravir is metabolized predominantly through glucuronidation by UGT1A1. Atazanavir increases the plasma concentrations of raltegravir 400 mg twice daily by 72% due to inhibition of UGT 1A1. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
HIV Infection, HIV Infections
What is being tested?
raltegravir QD, atazanavir and lamivudine (or emtricitabine)
Could I receive a placebo?
No, everyone receives an active treatment
How many people
20 participants
Where
4 sitesin 2 countries
Study dates
Jul 2009to Jan 2011
Phase
Phase 2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • HIV-infected as documented by positive HIV antibody test and confirmed by Western Blot.
  • Subject is at least 18 years of age at the day of screening.
  • Subject is able and willing to sign the Informed Consent Form prior to screening evaluations.
  • HIV-1 RNA < 40 copies/mL for at least 6 months on antiretroviral therapy.
  • Subject has no history of previous virological failure or documented resistance mutations

Who cannot join

  • History of sensitivity/idiosyncrasy to the drug or chemically related compounds or excipients, which may be employed in the trial.
  • Relevant history or current condition that might interfere with drug absorption, distribution, metabolism or excretion.
  • Inability to understand the nature and extent of the trial and the procedures required.
  • Pregnant female (as confirmed by an HCG test performed less than 3 weeks before the first dose) or breast-feeding female.
  • Abnormal serum transaminases determined as levels being > 5 times upper limit of normal (see Appendix A for normal ranges of clinical laboratory values).
  • Concomitant use of medications that interfere with raltegravir or atazanavir pharmacokinetics: rifampicin, irinotecan, midazolam, triazolam, ergotamine, dihydroergotamine, cisapride, pimozide, lovastatin, simvastatin, indinavir, proton pump inhibitors, H2 receptor antagonists, St. john's wort, Ginkgo Biloba, didanosine, tenofovir, efavirenz, nevirapine, antacids, clarithromycin, phenytoin, phenobarbital, carbamazepine.
  • Active hepatobiliary or hepatic disease (including chronic hepatitis B infection).
  • Alcohol abuse.

Trial locations and contacts

4 sites in 2 countries.

4 sites in 2 countries

Netherlands3 sites
  • Rijnstate Hospital Arnhem

    Arnhem

  • Radboud University Medical Centre Nijmegen

    Nijmegen

  • Erasmus Medical Center Rotterdam

    Rotterdam

Other trials in Netherlands

Germany1 site
  • University of Bonn

    Bonn

Other trials in Germany

About this study

Official title: Pharmacokinetic and Safety Pilotstudy of RAltegravir and Atazanavir in a Once DAily Dose Regimen in HIV-1 Infected Patients (PRADA)

The licensed dose of raltegravir is 400 mg twice daily with or without food. Raltegravir is metabolized predominantly through glucuronidation by UGT1A1. Atazanavir increases the plasma concentrations of raltegravir 400 mg twice daily by 72% due to inhibition of UGT 1A1.

This suggests that combined use of atazanavir and a lower dose frequency of raltegravir, once daily for example, is possible. Another reason why raltegravir most likely can be applied is that its pharmacodynamic effect is not related to Cmin but to AUC which is expected to be similar for an 800mg QD dose when compared to 400mg BD. Phase III clinical trials evaluating QD dosing of raltegravir are currently ongoing and interim results are expected to be published in mid 2009.

A regimen of atazanavir and raltegravir in combination with lamivudine or emtricitabine may be a well tolerated and effective NNRTI-, and ritonavir-sparing regimen that could be an attractive option for both first and second line (after NRTI/NNRTI failure) treatment regimens.

Being tested
raltegravir QD, atazanavir, lamivudine (or emtricitabine)
Keywords
pharmacokinetics, single dose, raltegravir, Treatment experienced
Medical subject headings
HIV Infections

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • raltegravir QDDrug

    Raltegravir 800mg QD

  • atazanavirDrug

    atazanavir

  • lamivudine (or emtricitabine)Drug

    lamivudine (or emtricitabine)

Study groups in NCT00943540
Study groupRoleWhat they receive
Raltegravir BID-QDExperimentalWeek 1-4 * 600 mg of atazanavir to be taken once daily * 400 mg of raltegravir to be taken twice daily * 300 mg of lamivudine (or 200 mg of emtricitabine) to be taken once daily Week 5-8 * 600 mg of atazanavir to be taken once daily * 800 mg of raltegravir to be taken once daily * 300 mg of lamivudine (or 200 mg of emtricitabine) to be taken once daily
Receives: Drug: raltegravir QD; Drug: atazanavir; Drug: lamivudine (or emtricitabine)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. pharmacokinetics of raltegravir

    Measured: after two weeks of reference treatment and after two weeks of test treatment

Secondary outcomes (2)
  1. Viral load

    Measured: after two weeks treatment with the reference treatment and after two weeks treatment with the test treatment

  2. Adverse events

    Measured: entire trial

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted22 Jul 2009 (estimated)
  2. Study startJul 2009
  3. Primary completionDec 2010
  4. Study completionJan 2011

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Single group
Masking
None (open label)
Enrolment
20 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00943540
Sponsor's protocol ID
UMCN-AKF 08.07
Acronym
PRADA
Status last verified
Nov 2020
First submitted
21 Jul 2009
Last updated
12 Nov 2020
Results posted
No
Data monitoring committee
No

Publications

  • Jansen A, Colbers EP, van der Ven AJ, Richter C, Rockstroh JK, Wasmuth JC, van Luin M, Burger DM. Pharmacokinetics of the combination raltegravir/atazanavir in HIV-1-infected patients. HIV Med. 2013 Aug;14(7):449-52. doi: 10.1111/hiv.12029. Epub 2013 Mar 18.

    PubMed 23506243

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing raltegravir QD, atazanavir and lamivudine (or emtricitabine) in people with HIV Infection and HIV Infections, run by Radboud University Medical Center at 4 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 12 Nov 2020. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 4 sites in Netherlands, Germany. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

pharmacokinetics of raltegravir (time frame: after two weeks of reference treatment and after two weeks of test treatment). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00943540, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Nov 2020.

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