HIV InfectionsPhase 4NCT00998582
Artery Elasticity After Switch From Epzicom to Truvada
A Phase 4 study testing Tenofovir disoproxil in people with HIV Infections, run by Hennepin Healthcare Research Institute at 2 sites in United States.
Trial summary
Recent research as suggested that use of the HIV medication abacavir (Ziagen, or co-formulated with lamivudine as Epzicom) may increase risk for heart disease, though findings from multiple studies have been inconsistent. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- HIV Infections
- What is being tested?
- Tenofovir disoproxil
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 27 participants
- Where
- 2 sitesUnited States
- Study dates
- Oct 2009to Dec 2011
- Phase
- Phase 4
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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
- Adult (≥18 years) males or non-pregnant females, non-lactating females.
- HIV-infected participants currently receiving fixed-dose abacavir/lamivudine based regimen for ≥3 months preceding the screening visit.
- HIV-infection documented by a positive HIV-1 antibody (confirmatory western-blot) or an HIV RNA level ≥1000 copies/mL
- Two consecutive plasma HIV RNA concentrations below the limit of detection for clinical-based assays used for HCMC and ANW HIV clinics. The 1st HIV RNA concentration must be at least 3 months prior to study entry.
- Subjects receiving lipid lowering agents will be allowed; however, dosing for these medications must be stable for ≥3 months prior to study entry
- Adequate renal function defined as a calculated creatinine clearance (CLCr) ≥50 mL/min according to the Cockcroft-Gault formula:
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- MALE: (140 - age in years) x (wt in kg) = CLCr (mL/min) 72 x (serum creatinine in mg/dL)
- FEMALE: (140 - age in years) x (wt in kg) x 0.85 = CLCr (mL/min) 72 x (serum creatinine in mg/dL)
- Negative serum pregnancy test (females of childbearing potential only)
- Hepatic transaminases (AST and ALT) ≤ 5 x upper limit of normal (ULN).
- Males and females (of childbearing potential) must agree to avoid pregnancy by sexual abstinence, or utilization of a highly effective method of birth control throughout the study period and for 30 days following discontinuation of study drug (refer to Appendix A for definitions of 'childbearing potential' and 'highly effective method of birth control')
Who cannot join
- Subjects with known resistance to abacavir, lamivudine, tenofovir DF, or emtricitabine at anytime in the past (including but not limited to K65R, L74V/I, M184V/I, or thymidine analog mutations).
- A new AIDS-defining condition diagnosed (with the exception of CD4 criteria) within 30 days of baseline
- Previous therapy with agents with systemic myelosuppressive, pancreatoxic, hepatotoxic or cytotoxic potential within 3 months of study entry or the expectation for such therapy at the time of enrollment
- Proven or suspected acute hepatitis in the 30 days prior to study entry
- Receiving ongoing therapy with any of the following (administration of any of the following medications must be discontinued at least 30 days prior to the baseline visit and for the duration of the study period):
- Nephrotoxic agents (aminoglycoside antibiotics, amphotericin B, cidofovir, cisplatin, foscarnet, IV pentamidine, other agents with significant nephrotoxic potential)
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- Adefovir dipivoxil
- Probenecid
- Systemic chemotherapeutic agents (i.e., cancer treatment medications)
- Systemic corticosteroids
- Interleukin-2 (IL-2)
- Evidence of gastrointestinal malabsorption syndrome or chronic nausea or vomiting which may confer an inability to receive an orally administered medication.
- Current alcohol or substance abuse judged by the investigator to potentially interfere with subject adherence
- Malignancy other than cutaneous Kaposi's sarcoma (KS) or basal cell carcinoma. Participants with biopsy-confirmed cutaneous KS are eligible, but must not have received any systemic therapy for KS within 30 days of baseline and are not anticipated to require systemic therapy during the study.
- Active, serious infections (other than HIV-1 infection) requiring parenteral antimicrobial therapy within 15 days prior to screening.
- Prior history of significant renal or bone disease.
- Any other clinical condition or prior therapy that, in the opinion of the investigator, would make the subject unsuitable for the study or unable to comply with the dosing requirements.
- Known hypersensitivity to the study drugs, the metabolites or formulation excipients
Trial locations and contacts
2 sites in 1 country.
United States2 sites
Hennepin County Medical Center
Minneapolis, Minnesota, 55415
Abbott Northwestern Hospital and Clinics
Minneapolis, Minnesota
About this study
Recent research as suggested that use of the HIV medication abacavir (Ziagen, or co-formulated with lamivudine as Epzicom) may increase risk for heart disease, though findings from multiple studies have been inconsistent. This pilot study will examine vascular function, a marker of heart disease risk, among patients taking abacavir as part of their HIV medications and are then randomized to: 1) switch to tenofovir, another HIV medication, or 2) continue to take abacavir.
- Conditions
- HIV Infections
- Being tested
- Tenofovir disoproxil
- Keywords
- Cardiovascular Disease, HIV Infection, Abacavir, Artery Elasticity, Treatment experienced
- Medical subject headings
- HIV Infections, Cardiovascular Diseases
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Tenofovir disoproxilDrug
Participants taking an abacavir-based HIV treatment regimen will be randomized to switch to a tenofovir-based regimen or continue taking abacavir.
| Study group | Role | What they receive |
|---|---|---|
| Abacavir | Active comparator | Participants randomized to this arm will continue abacavir and their other HIV medications with no changes Receives: Drug: Tenofovir disoproxil |
| Tenofovir | Experimental | Participants randomized to this arm will switch from taking abacavir (co-formulated with lamivudine as Epzicom) and start taking tenofovir (co-formulated with emtricitabine as Truvada), and continue their other HIV medications Receives: Drug: Tenofovir disoproxil |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Small Artery Elasticity (mL/mmHg x100) From Baseline to Week 24
Small artery elasticity is a measure of vascular function, estimated through analysis of the blood pressure waveform. A sensor is placed on wrist over the radial pulse. The blood pressure waveform of the pulse is recorded and analyzed the elasticity, or compliance, of the small (and large) vasculature. Impaired artery elasticity, or increased stiffness, is an early sign of vascular disease that predicts risk for future cardiovascular events.
Measured: Change from baseline to 24 weeks
Outcome Was Change in Large Artery Elasticity (mL/mmHg x100) From Baseline to Week 24
Large artery elasticity is a measure of vascular function, estimated through analysis of the blood pressure waveform. A sensor is placed on wrist over the radial pulse. The blood pressure waveform of the pulse is recorded and analyzed the elasticity, or compliance, of the large (and small) vasculature. Impaired artery elasticity, or increased stiffness, is an early sign of vascular disease.
Measured: Change from baseline to 24 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted20 Oct 2009 (estimated)
- Study startOct 2009
- Primary completionJun 2011
- Study completionDec 2011
Why it stopped: Low enrollment
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for HIV InfectionsStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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 4
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 27 participants (actual)
Sponsor and investigators
- Lead sponsor
- Hennepin Healthcare Research Institute
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Jason Baker, MD, MS, Principal investigator, University of Minnesota; HCMC
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00998582
- Sponsor's protocol ID
- PCC-004
- Status last verified
- Oct 2012
- First submitted
- 19 Oct 2009
- Last updated
- 8 Oct 2012
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 8 Oct 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Artery Elasticity After Switch From Epzicom to Truvada
- ClinicalTrials.gov ID
- NCT00998582
- Acronym / sponsor ID
- PCC-004
- Conditions
- HIV Infections
- Keywords
- Cardiovascular Disease, HIV Infection, Abacavir, Artery Elasticity, Treatment experienced
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Low enrollment
- Enrolment
- 27 participants (actual)
- Lead sponsor
- Hennepin Healthcare Research InstituteUniversity, hospital or other
- Study start
- Oct 2009
- Primary completion
- Jun 2011 (actual)
- Study completion
- Dec 2011 (actual)
- First posted
- 20 Oct 2009 (estimated)
- Results
- Posted 23 Mar 2012
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Recent research as suggested that use of the HIV medication abacavir (Ziagen, or co-formulated with lamivudine as Epzicom) may increase risk for heart disease, though findings from multiple studies have been inconsistent. This pilot study will examine vascular function, a marker of heart disease risk, among patients taking abacavir as part of their HIV medications and are then randomized to: 1) switch to tenofovir, another HIV medication, or 2) continue to take abacavir.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Abacavir | Active comparator | Drug: Tenofovir disoproxilParticipants randomized to this arm will continue abacavir and their other HIV medications with no changes |
| Tenofovir | Experimental | Drug: Tenofovir disoproxilParticipants randomized to this arm will switch from taking abacavir (co-formulated with lamivudine as Epzicom) and start taking tenofovir (co-formulated with emtricitabine as Truvada), and continue their other HIV medications |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (11 listed)
- Adult (≥18 years) males or non-pregnant females, non-lactating females.
- HIV-infected participants currently receiving fixed-dose abacavir/lamivudine based regimen for ≥3 months preceding the screening visit.
- HIV-infection documented by a positive HIV-1 antibody (confirmatory western-blot) or an HIV RNA level ≥1000 copies/mL
- Two consecutive plasma HIV RNA concentrations below the limit of detection for clinical-based assays used for HCMC and ANW HIV clinics. The 1st HIV RNA concentration must be at least 3 months prior to study entry.
- Subjects receiving lipid lowering agents will be allowed; however, dosing for these medications must be stable for ≥3 months prior to study entry
Key exclusion criteria (18 listed)
- Subjects with known resistance to abacavir, lamivudine, tenofovir DF, or emtricitabine at anytime in the past (including but not limited to K65R, L74V/I, M184V/I, or thymidine analog mutations).
- A new AIDS-defining condition diagnosed (with the exception of CD4 criteria) within 30 days of baseline
- Previous therapy with agents with systemic myelosuppressive, pancreatoxic, hepatotoxic or cytotoxic potential within 3 months of study entry or the expectation for such therapy at the time of enrollment
- Proven or suspected acute hepatitis in the 30 days prior to study entry
- Receiving ongoing therapy with any of the following (administration of any of the following medications must be discontinued at least 30 days prior to the baseline visit and for the duration of the study period):
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Tenofovir disoproxilParticipants taking an abacavir-based HIV treatment regimen will be randomized to switch to a tenofovir-based regimen or continue taking abacavir. | Drug | Abacavir, Tenofovir |
Primary outcome
Change in Small Artery Elasticity (mL/mmHg x100) From Baseline to Week 24
Time frame: Change from baseline to 24 weeks
Small artery elasticity is a measure of vascular function, estimated through analysis of the blood pressure waveform. A sensor is placed on wrist over the radial pulse. The blood pressure waveform of the pulse is recorded and analyzed the elasticity, or compliance, of the small (and large) vasculature. Impaired artery elasticity, or increased stiffness, is an early sign of vascular disease that predicts risk for future cardiovascular events.
Outcome Was Change in Large Artery Elasticity (mL/mmHg x100) From Baseline to Week 24
Time frame: Change from baseline to 24 weeks
Large artery elasticity is a measure of vascular function, estimated through analysis of the blood pressure waveform. A sensor is placed on wrist over the radial pulse. The blood pressure waveform of the pulse is recorded and analyzed the elasticity, or compliance, of the large (and small) vasculature. Impaired artery elasticity, or increased stiffness, is an early sign of vascular disease.
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 8 Oct 2012.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Jason Baker, MD, MS principal investigator
University of Minnesota; HCMC
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing Tenofovir disoproxil in people with HIV Infections, run by Hennepin Healthcare Research Institute at 2 sites in United States.
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 11 inclusion and 18 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: stopped early, as of the sponsor's last update on 8 Oct 2012. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in United States. 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 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 23 Mar 2012). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
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?
Change in Small Artery Elasticity (mL/mmHg x100) From Baseline to Week 24 (time frame: Change from baseline to 24 weeks). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 8 Oct 2012.