Efficacy and Safety of VICRIVIROC in HIV-Infected Treatment-Naïve Subjects (Study P04875AM3) - Full Text View

Sponsor:	Schering-Plough
Collaborator:	Bristol-Myers Squibb
Information provided by:	Schering-Plough
ClinicalTrials.gov Identifier:	NCT00551018

Purpose

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 evaluate the virologic efficacy of vicriviroc combined with ritonavir-boosted Reyataz® in HIV-infected treatment-naïve subjects.

Condition	Intervention	Phase
HIV Infections	Drug: Vicriviroc Drug: emtricitabine and tenofovir disoproxil fumarate	Phase II Phase III

Study Type:	Interventional
Study Design:	Treatment, Randomized, Open Label, Active Control, Parallel Assignment, Safety/Efficacy Study
Official Title:	Efficacy and Safety of VICRIVIROC in HIV-Infected Treatment-Naïve Subjects

Resource links provided by NLM:

MedlinePlus related topics: AIDS

Drug Information available for: Tenofovir Tenofovir disoproxil Tenofovir Disoproxil Fumarate Vicriviroc Truvada

U.S. FDA Resources

Further study details as provided by Schering-Plough:

Primary Outcome Measures:

Mean change from baseline in log10 HIV RNA [ Time Frame: Week 48 ] [ Designated as safety issue: No ]

Secondary Outcome Measures:

Proportion of subjects with plasma HIV RNA <50 copies/mL [ Time Frame: Week 48 ] [ Designated as safety issue: No ]

Estimated Enrollment:	200
Study Start Date:	December 2007
Estimated Study Completion Date:	June 2012
Estimated Primary Completion Date:	June 2012 (Final data collection date for primary outcome measure)

Arms	Assigned Interventions
Vicriviroc + Reyataz + ritonavir: Experimental vicriviroc 30 mg tablet QD + Reyataz® (atazanavir sulfate) 300 mg (1x300 mg capsule or 2x150 mg capsules) QD + Norvir® (ritonavir) 100 mg capsule QD	Drug: Vicriviroc one 30 mg tablet QD
Truvada® + Reyataz + ritonavir: Active Comparator Truvada® 200/300 combination tablet QD + Reyataz® (atazanavir sulfate) 300 mg (1x300 mg capsule or 2x150 mg capsules) QD + Norvir® (ritonavir) 100 mg capsule QD	Drug: emtricitabine and tenofovir disoproxil fumarate one 200/300 combination tablet QD

Detailed Description:

This is a randomized, open-label, active-controlled, parallel-group, multi-center study of vicriviroc maleate in treatment-naïve subjects infected with CCR5-tropic HIV. The study will compare the virologic benefit of vicriviroc combined with ritonavir-boosted Reyataz to a control group receiving Truvada plus ritonavir-boosted Reyataz. Interim analyses will be performed when the first cohort of 80 subjects have completed 24 weeks and 48 weeks of treatment. The second cohort of 120 subjects will be enrolled after the first interim analysis. The primary efficacy analysis will be conducted when all 200 subjects from both stages have completed 48 weeks of treatment or discontinued. The final analysis will be performed at Week 96, when all 200 subjects have completed 96 weeks of treatment or discontinued. If vicriviroc is shown to provide benefit at the studied dose, study participants will be offered vicriviroc free of charge through a rollover study or protocol extension until the drug is commercially available in their location.

Eligibility

Ages Eligible for Study:	18 Years and older
Genders Eligible for Study:	Both
Accepts Healthy Volunteers:	No

Criteria

Inclusion Criteria:

Adult subjects at least 18 years old or minimum age that defines an adult as determined by local regulatory authorities or legal requirements) of either sex or any race with CCR5-tropic HIV infection.
Cumulative lifetime anti-retroviral therapy exposure of at most 4 weeks (with the exception of prophylaxis to prevent mother-to-child transmission) and none in the 8 weeks preceding randomization.
A CD4 cell count of at least 100 cells/(cubic mm) at Screening (or as specified by local treatment guidelines).
HIV ribonucleic acid (RNA) must be at least 2000 copies/mL at Screening.
Subjects should meet International AIDS Society (IAS), Department of Health and Human Services (DHSS), or local recommendations for initiation of antiretroviral therapy (ART).
Platelet count must be at least 50,000/microL, hemoglobin at least 8 g/dL, absolute neutrophil count at least 1000/microL, serum creatinine <2.0 mg/dL (154 micromol/L), and SGOT/SGPT (serum glutamic oxaloacetic transaminase/serum glutamic pyruvic transaminase) at most 3 x upper limit of normal at Screening. Other clinical laboratory tests must be within normal limits or clinically acceptable to the investigator.
Female subjects of childbearing potential must be using a medically accepted method of birth control prior to Screening and agree to continue its use during the study, or must have been surgically sterilized.
Female subjects of childbearing potential must have a negative serum beta-hCG (human chorionic gonadotropin) pregnancy test at Screening and a negative urine beta-hCG pregnancy test on Day 1 prior to dosing.

Exclusion Criteria:

Female subjects of childbearing potential who are breastfeeding, pregnant, or planning to become pregnant.
Subjects with intercurrent illness, vaccinations, or who have used immunomodulators (within the 4 week period prior to randomization) that could influence plasma HIV RNA levels.
CXCR4 or dual-mixed (CXCR4 and CCR5) tropism.
Subjects with primary resistance mutations to any of proposed components of the study arms.
Subjects with active opportunistic infection or malignancy.
Subjects with seizure disorder requiring ongoing anti-seizure therapy or with a history of a seizure disorder who are, in the judgment of the investigator, at risk for seizures.

Contacts and Locations

No Contacts or Locations Provided

More Information

No publications provided

Responsible Party:	Schering-Plough ( Head, Clinical Trials Registry & Results Disclosure Group )
Study ID Numbers:	P04875
Study First Received:	October 29, 2007
Last Updated:	February 4, 2010
ClinicalTrials.gov Identifier:	NCT00551018 History of Changes
Health Authority:	United States: Food and Drug Administration

Keywords provided by Schering-Plough:

Treatment Naive

Additional relevant MeSH terms:

Anti-Infective Agents
Sexually Transmitted Diseases, Viral
Slow Virus Diseases
Molecular Mechanisms of Pharmacological Action
Infection
Reverse Transcriptase Inhibitors
Emtricitabine
Anti-Retroviral Agents
Therapeutic Uses
Tenofovir
Retroviridae Infections
Nucleic Acid Synthesis Inhibitors
Tenofovir disoproxil

RNA Virus Infections
Anti-HIV Agents
Immune System Diseases
Acquired Immunodeficiency Syndrome
Enzyme Inhibitors
Antiviral Agents
Immunologic Deficiency Syndromes
Pharmacologic Actions
Virus Diseases
HIV Infections
Sexually Transmitted Diseases
Lentivirus Infections

ClinicalTrials.gov processed this record on February 08, 2010