Clinical Trials


Vicriviroc, a CCR5 Inhibitor, Added to an Optimized Antiretroviral Therapy for Previously Treated HIV (VICTOR-E2) (Study P04285)(TERMINATED)

This study has been terminated

Information provided by (Responsible Party)
Schering-Plough Identifier

First received: October 20, 2005
Last updated: October 21, 2009
Last Verified: October 2009
History of Changes


This is an international study of vicriviroc in 500 adult HIV-infected subjects who are failing standard antiretroviral therapy (ART). HIV must be of a certain type known as R5/X4-mixed tropic. Subjects allowed into the trial will be randomly assigned to treatment with vicriviroc 10 mg QD, vicriviroc 15 mg QD, or placebo in addition to other antiretrovirals (selected by the investigator to be optimal for the specific subject) containing at least 3 drugs, including a protease inhibitor (PI) boosted with at least 100 mg ritonavir QD. Subjects will be continued for up to 48 weeks of dosing.

Condition Intervention Phase
HIV Infections
Acquired Immunodeficiency Syndrome

Drug : Vicriviroc
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double
Primary Purpose: Treatment
Official Title: Vicriviroc (SCH 417690) in Combination Treatment With Optimized ART Regimen in Experienced Subjects (VICTOR-E2)

Further study details as provided by Schering-Plough:

Estimated Enrollment: 500
Study Start Date: September 2005

Detailed Description:

This is a randomized, placebo-controlled, multi-site, parallel-group, double-blind study of vicriviroc (SCH 417690) in 500 adult HIV-infected subjects with R5/X4 mixed viral tropism who have at least 5000 copies/mL HIV RNA despite standard antiretroviral therapy (ART) that the subject has been receiving continuously for at least 3 months. Eligible subjects will be randomized to treatment with vicriviroc 10 mg QD, vicriviroc 15 mg QD, or placebo in addition to an individually optimized PI-containing ART regimen containing at least 3 drugs, including a PI, boosted by at least 100 mg ritonavir QD prescribed by the investigator. The vicriviroc dose and placebo will be double-blind, and the optimized background therapy will be open-label. Treatment visits after Day 1 are scheduled for Weeks 1, 2, 4, 8, 12, 16, 20, 24, 32, 40, and 48. A planned interim analysis will be conducted when 100 subjects have completed 12 weeks of dosing. After completion of the primary analysis (24-week virologic response of all subjects), subjects will be given the optimal dose of vicriviroc and follow-up will be continued to at least 48 weeks. Safety will be monitored by standard laboratory tests, assessment of adverse events, and emergence of complicating medical conditions. Cardiac safety will be monitored periodically by ECG, and plasma samples will be collected from all subjects through the study for population pharmacokinetic analyses.



Ages Eligible for Study: 18 Years and older  
Sexes Eligible for Study: All  
Accepts Healthy Volunteers: No  


Inclusion Criteria:

  • Adult subjects with documented R5/X4 mixed-tropic HIV infection
  • Prior therapy for greater than or equal to 3 months with greater than or equal to 3 classes of currently marketed antiretroviral agents (NRTIs, NNRTIs, PIs, or fusion inhibitors) at any time prior to screening
  • HIV RNA greater than or equal to 5000 copies/mL on a stable ART regimen of at least 3 months of duration
  • Greater than or equal to 1 genotypically documented resistance mutation to a reverse transcriptase (RT) inhibitor and greater than or equal to 1 primary resistance mutation to a PI
  • Acceptable hematologic, renal, and hepatic laboratory parameters.

Exclusion Criteria:
  • No history of recurrent seizure or CNS condition predisposing to seizure
  • No active AIDS-defining opportunistic infection
  • Subjects who have previously used a CCR5 inhibitor for greater than 4 weeks and/or within 30 days of the screening visit
  • Use of any drugs that predispose to seizures.

contacts and locations

Contacts and Locations

Choosing to participate in a study is an important personal decision.Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00243568

Sponsors and Collaborators

More Information

More Information

Responsible Party: Head, Clinical Trials Registry & Results Disclosure Group, Schering-Plough Identifier: NCT00243568   History of Changes  
Other Study ID Numbers: P04285  
  EudraCT number 2005-001058-26  
Study First Received: October 20, 2005  
Last Updated: October 21, 2009  

Keywords provided by Schering-Plough:

HIV Infections
Acquired Immunodeficiency Syndrome
CCR5/CXCR4 mixed tropism
R5/X4 mixed tropism
CCR5 inhibitor

Additional relevant MeSH terms:
HIV Infections
Immunologic Deficiency Syndromes
Acquired Immunodeficiency Syndrome processed this data on September 25, 2018
This information is provided by