HIV InfectionsPhase 3NCT00474370
Vicriviroc in HIV-Treatment Experienced Subjects (Study P04889AM8)(COMPLETED)
A Phase 3 study testing Vicriviroc in people with HIV Infections and Acquired Immunodeficiency Syndrome, run by Merck Sharp & Dohme LLC.
Trial summary
Vicriviroc (vye-kri-VYE-rock) is an investigational drug (not yet approved by Government Regulatory Authorities for commercial use) that belongs to a new class of drugs, called CCR5 receptor blockers. This group of drugs blocks one of the ways HIV enters T-cells (the cells that fight infection). Read more about this study
- Who is it for?
- Ages 16 years and older
- Conditions the study is for
- HIV Infections, Acquired Immunodeficiency Syndrome
- What is being tested?
- Vicriviroc
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 400 participants
- Where
- No sites listed yet
- Study dates
- 15 May 2007to 26 Oct 2010
- Phase
- Phase 3
- 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 16 years and older
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Subject must be infected with HIV-1 virus.
- Subject must have documented plasma HIV-1 RNA >1000 copies/mL within 60 days of Visit 1/Day 1 (randomization) and must be either
- on a stable regimen of 3 or more antiretrovirals (ART) for at least 4
- weeks prior to the screening visit
- OR
- on no ART agents for at least 4 weeks prior to
Show all 12Show fewer
- the screening visit.
- Subject must be ART experienced and have documented resistance to at least 2 of the following 3 drug classes: nucleoside reverse transcriptase inhibitor (NRTI); non-nucleoside reverse transcriptase inhibitor (NNRTI); or protease inhibitor (PI)
- OR
- Subject must have ART class experience for at least 6 months with at least two of the following: one NRTI; one NNRTI; two PIs (excluding low-dose ritonavir).
- Women of child-bearing potential must agree to use a medically accepted method of contraceptive as defined by the protocol.
- Subject must be willing to initiate CD4+ cell count-guided chemoprophylaxis to prevent opportunistic infection as defined in protocol.
Who cannot join
- Subjects with detectable CXCR4-tropic or dual/mixed CCR5/CXCR4-tropic HIV isolates at Screening.
- Subjects with prior history of malignancy (with exceptions of cutaneous Kaposi's sarcoma without visceral or mucosal involvement that resolved with HAART but without systemic anti-cancer treatment, and basal-cell carcinoma of skin); or prior receipt of cytotoxic cancer chemotherapy that may increase the risk of malignancy.
- Subjects with seizure disorder requiring anti-seizure therapy or with any condition that is likely to increase risk of seizure (CNS malignancy or toxoplasmosis).
About this study
Official title: Vicriviroc in Combination Treatment With an Optimized ART Regimen in HIV-Infected Treatment-Experienced Subjects (VICTOR-E4)
Vicriviroc (vye-kri-VYE-rock) is an investigational drug (not yet approved by Government Regulatory Authorities for commercial use) that belongs to a new class of drugs, called CCR5 receptor blockers. This group of drugs blocks one of the ways HIV enters T-cells (the cells that fight infection). Previous smaller studies in HIV treatment-experienced patients, have shown that vicriviroc is safe and effective. The purpose of this study is to confirm the previous findings in a larger phase 3 study over a 48-week period, and show that when taken in combination with other appropriate HIV drugs, vicriviroc can decrease the level of HIV (viral load) in the blood and that it is well tolerated.
Read the detailed description
This is a randomized, double-blind, placebo-controlled, parallel-group, multi-center study of vicriviroc maleate in HIV subjects infected with CCR5-tropic virus only and who have documented resistance to at least 2 of the 3 antiretroviral drug classes (NRTI, NNRTI or PI) or at least 6 months experience with at
least 2 of the following: one NRTI, one NNRTI, or two PIs (excluding low-dose ritonavir)and failed at least one standard triple-drug regimen. The study will compare the virologic benefit of adding vicriviroc to an optimized background regimen to a control group receiving placebo plus the new optimized background therapy. The optimized background regimen will be chosen by the investigator based on results of drug susceptibility tests performed at Screening, history of prior antiretroviral drug use by the patient, and drug toxicity. OBT must include a PI boosted by ritonavir (>=100 mg of ritonavir), and at least 2 active drugs (ie, to which HIV isolate is fully susceptible). Primary efficacy analysis will be conducted when all subjects have completed 48 weeks of treatment. An interim analysis will be performed when all subjects have completed 24 weeks of treatment. After completing Week 48 of the study, subjects will be offered open-label vicriviroc 30 mg QD, if appropriate, until the drug is commercially available or until the sponsor terminates the clinical development of vicriviroc. Additionally, subjects who discontinued early from the study prior to Week 48 may be eligible for the open-label segment of the study.
- Conditions
- HIV Infections, Acquired Immunodeficiency Syndrome
- Being tested
- Vicriviroc, Placebo
- Keywords
- Acquired Immunodeficiency Syndrome
- Medical subject headings
- HIV Infections, Acquired Immunodeficiency Syndrome
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
VicrivirocDrug
Also called SCH 417690
One tablet of vicriviroc 30 mg once daily.
PlaceboDrug
One tablet of placebo once daily.
| Study group | Role | What they receive |
|---|---|---|
| Test Arm | Experimental | Vicriviroc 30 mg QD Receives: Drug: Vicriviroc |
| Placebo Control Arm | Placebo comparator | Placebo Receives: Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Proportion of subjects with undetectable plasma HIV-1 RNA (<50 copies/mL)
Measured: 48 weeks
Secondary outcomes (1)
Mean change from baseline in plasma HIV-1 RNA (log10 copies/mL); Proportion of subjects with <400 copies/mL of plasma HIV-1 RNA; Proportion of subjects with at least 2log10 reduction from baseline in plasma HIV-1 RNA
Measured: 48 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 May 2007 (estimated)
- Study start15 May 2007
- Primary completion24 Aug 2009
- Study completion26 Oct 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for HIV InfectionsStudies of the same condition, open and under way.
- More trials run by Merck Sharp & Dohme LLCThe sponsor's other registered studies.
- 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 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Investigator, Outcomes assessor
- Enrolment
- 400 participants (actual)
Sponsor and investigators
- Lead sponsor
- Merck Sharp & Dohme LLC
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Medical Director, Study director, Merck Sharp & Dohme LLC
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00474370
- Sponsor's protocol ID
- P04889
- Other IDs
- 3547030, 2006-006417-32
- Status last verified
- Aug 2022
- First submitted
- 15 May 2007
- Last updated
- 30 Aug 2022
- Results posted
- No
- Data monitoring committee
- Yes
- Individual data sharing
- Yes: http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf
Publications
Caseiro MM, Nelson M, Diaz RS, Gathe J, de Andrade Neto JL, Slim J, Solano A, Netto EM, Mak C, Shen J, Greaves W, Dunkle LM, Vilchez RA, Zeinecker J. Vicriviroc plus optimized background therapy for treatment-experienced subjects with CCR5 HIV-1 infection: final results of two randomized phase III trials. J Infect. 2012 Oct;65(4):326-35. doi: 10.1016/j.jinf.2012.05.008. Epub 2012 May 24.
PubMed 22634184
Study at a glance
From the registry record, last updated by the sponsor on 30 Aug 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Vicriviroc in Combination Treatment With an Optimized ART Regimen in HIV-Infected Treatment-Experienced Subjects (VICTOR-E4)
- ClinicalTrials.gov ID
- NCT00474370
- Acronym / sponsor ID
- P04889
- Conditions
- HIV Infections, Acquired Immunodeficiency Syndrome
- Keywords
- Acquired Immunodeficiency Syndrome
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 400 participants (actual)
- Lead sponsor
- Merck Sharp & Dohme LLCIndustry (pharma, biotech, devices)
- Study start
- 15 May 2007 (actual)
- Primary completion
- 24 Aug 2009 (actual)
- Study completion
- 26 Oct 2010 (actual)
- First posted
- 16 May 2007 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Vicriviroc (vye-kri-VYE-rock) is an investigational drug (not yet approved by Government Regulatory Authorities for commercial use) that belongs to a new class of drugs, called CCR5 receptor blockers. This group of drugs blocks one of the ways HIV enters T-cells (the cells that fight infection). Previous smaller studies in HIV treatment-experienced patients, have shown that vicriviroc is safe and effective. The purpose of this study is to confirm the previous findings in a larger phase 3 study over a 48-week period, and show that when taken in combination with other appropriate HIV drugs, vicriviroc can decrease the level of HIV (viral load) in the blood and that it is well tolerated.
Detailed description
This is a randomized, double-blind, placebo-controlled, parallel-group, multi-center study of vicriviroc maleate in HIV subjects infected with CCR5-tropic virus only and who have documented resistance to at least 2 of the 3 antiretroviral drug classes (NRTI, NNRTI or PI) or at least 6 months experience with at
least 2 of the following: one NRTI, one NNRTI, or two PIs (excluding low-dose ritonavir)and failed at least one standard triple-drug regimen. The study will compare the virologic benefit of adding vicriviroc to an optimized background regimen to a control group receiving placebo plus the new optimized background therapy. The optimized background regimen will be chosen by the investigator based on results of drug susceptibility tests performed at Screening, history of prior antiretroviral drug use by the patient, and drug toxicity. OBT must include a PI boosted by ritonavir (>=100 mg of ritonavir), and at least 2 active drugs (ie, to which HIV isolate is fully susceptible). Primary efficacy analysis will be conducted when all subjects have completed 48 weeks of treatment. An interim analysis will be performed when all subjects have completed 24 weeks of treatment. After completing Week 48 of the study, subjects will be offered open-label vicriviroc 30 mg QD, if appropriate, until the drug is commercially available or until the sponsor terminates the clinical development of vicriviroc. Additionally, subjects who discontinued early from the study prior to Week 48 may be eligible for the open-label segment of the study.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Test Arm | Experimental | Drug: VicrivirocVicriviroc 30 mg QD |
| Placebo Control Arm | Placebo comparator | Drug: PlaceboPlacebo |
Who may qualify
- Ages
- 16 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (12 listed)
- Subject must be infected with HIV-1 virus.
- Subject must have documented plasma HIV-1 RNA >1000 copies/mL within 60 days of Visit 1/Day 1 (randomization) and must be either
- weeks prior to the screening visit
- OR
- on no ART agents for at least 4 weeks prior to
Key exclusion criteria (3 listed)
- Subjects with detectable CXCR4-tropic or dual/mixed CCR5/CXCR4-tropic HIV isolates at Screening.
- Subjects with prior history of malignancy (with exceptions of cutaneous Kaposi's sarcoma without visceral or mucosal involvement that resolved with HAART but without systemic anti-cancer treatment, and basal-cell carcinoma of skin); or prior receipt of cytotoxic cancer chemotherapy that may increase the risk of malignancy.
- Subjects with seizure disorder requiring anti-seizure therapy or with any condition that is likely to increase risk of seizure (CNS malignancy or toxoplasmosis).
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 |
|---|---|---|
| VicrivirocAlso: SCH 417690One tablet of vicriviroc 30 mg once daily. | Drug | Test Arm |
| PlaceboOne tablet of placebo once daily. | Drug | Placebo Control Arm |
Primary outcome
Proportion of subjects with undetectable plasma HIV-1 RNA (<50 copies/mL)
Time frame: 48 weeks
1 secondary outcome
Mean change from baseline in plasma HIV-1 RNA (log10 copies/mL); Proportion of subjects with <400 copies/mL of plasma HIV-1 RNA; Proportion of subjects with at least 2log10 reduction from baseline in plasma HIV-1 RNA
Time frame: 48 weeks
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 30 Aug 2022.
- Derived from this study: PubMed 22634184Caseiro MM, Nelson M, Diaz RS, Gathe J, de Andrade Neto JL, Slim J, Solano A, Netto EM, Mak C, Shen J, Greaves W, Dunkle LM, Vilchez RA, Zeinecker J. Vicriviroc plus optimized background therapy for treatment-experienced subjects with CCR5 HIV-1 infection: final results of two randomized phase III trials. J Infect. 2012 Oct;65(4):326-35. doi: 10.1016/j.jinf.2012.05.008. Epub 2012 May 24.
- Individual participant dataSharing planned: Yes. http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf
Related trials for HIV Infections
Not yet recruiting
HealthMpowerment Korea: Pilot Testing the Cultural Adaptation of a Digital HIV Intervention for Men Who Have Sex With Men in South Korea
HIV Infections, HIV Prevention and Care
Not yet recruiting
Prescribe to Prevent HIV: A Hybrid Trial Helping Addiction Clinics Prevent HIV & Infections Through Safer Drug Use Support
People Who Use Opioids/People With Opioid Use Disorder (OUD)
Recruiting
Evaluating the Impact of Using the B-OK Bottles for HIV and ART Literacy in South Africa
HIV, HIV Treatment
Recruiting
Trial Phase: Syndemic Adapted Medly Uganda
Mental Health
RecruitingObservational study
Olfactory Function and Model-Based Behavior in People Living With HIV and SUD
HIV, Substance Use Disorder
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.
Medical Director study director
Merck Sharp & Dohme LLC
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Vicriviroc in people with HIV Infections and Acquired Immunodeficiency Syndrome, run by Merck Sharp & Dohme LLC.
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 12 inclusion and 3 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 30 Aug 2022. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. 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 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
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?
Proportion of subjects with undetectable plasma HIV-1 RNA (<50 copies/mL) (time frame: 48 weeks). 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 NCT00474370, 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 30 Aug 2022.