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Capravirine (AG1549) in Combination With Viracept and Two NRTIs in HIV Infected Patients Who Failed an Initial NNRTI Containing Regimen

This study has been completed.
Information provided by:
Pfizer Identifier:
First received: January 16, 2003
Last updated: May 9, 2011
Last verified: May 2011

This is a 48 week study that is intended for HIV Infected persons whose first treatment regimen was with a nonnucleoside reverse transcriptase inhibitor (NNRTI) and who are now failing that regimen. They must be currently on their failing regimen to be eligible.

Condition Intervention Phase
Human Immunodeficiency Virus
Drug: Capravirine
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double-Blind
Primary Purpose: Treatment
Official Title: A Double Blind- Randomized, Placebo-controlled Study of Two Doses of Capravirine (AG1549) in Combination With Viracept and Two Nucleoside Reverse Transcriptase Inhibitors in HIV Infected Patients Who Failed an Initial Nonnucleoside Reverse Transcriptase Inhibitor Containing Regimen

Resource links provided by NLM:

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • The primary objective was to determine whether the addition of capravirine to a regimen of VIRACEPT and 2 new nucleoside reverse transcriptase inhibitors would provide a higher virologic response rate over 48 weeks
  • when compared to a 3-drug regimen without capravirine in patients who had experienced virologic failure while on a nonnucleoside reverse transcriptase inhibitor regimen.

Secondary Outcome Measures:
  • The safety and tolerability of 2 doses of capravirine.
  • The difference between 2 doses of capravirine in terms of tolerability, efficacy, and pharmacokinetics
  • The relationship of HIV resistance (genotype and phenotype) to virologic response.
  • The immunologic response as determined by CD4 and CD8 absolute lymphocyte counts
  • The population pharmacokinetics of capravirine and VIRACEPT
  • The pharmacokinetics of potential drug-drug interactions.

Enrollment: 179
Study Start Date: August 2002
Study Completion Date: November 2004

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

Inclusion Criteria:

  • Male or female at least 18 years old
  • HIV RNA level >1000 copies/mL at screening
  • CD4 >50 cells/uL at screening
  • Patient is currently taking a regimen that includes an NNRTI plus 2 NRTIs for at least 28 days and is currently failing this regimen
  • Patient has adequate hematology tests (absolute neutrophil count >1000/uL, Platelets>75,000uL, hemoglobin 9g/L)
  • Patient has adequate renal function (serum creatinine of <1.5 upper limit of normal)
  • Patient has adequate liver function (AST, ALT, and bilirubin < 2.5 upper limit of normal)

Exclusion Criteria:

  • Previous use of protease inhibitors (except if patient has short duration of PI and was switched for tolerability reasons when viral load was <50 copies) This exception does not include Viracept
  • Women who are pregnant or lactating
  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: NCT00051844

  Hide Study Locations
United States, California
Pfizer Investigational Site
Beverly Hills, California, United States, 90211
Pfizer Investigational Site
Long Beach, California, United States, 90813
Pfizer Investigational Site
Newport Beach, California, United States, 92663
Pfizer Investigational Site
San Francisco, California, United States, 94121
Pfizer Investigational Site
San Francisco, California, United States, 94115
Pfizer Investigational Site
West Hollywood, California, United States, 90069
United States, Florida
Pfizer Investigational Site
Fort Lauderdale, Florida, United States, 33311
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Miami, Florida, United States, 33137
Pfizer Investigational Site
Safety Harbor, Florida, United States, 34695
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Tampa, Florida, United States, 33602
United States, Georgia
Pfizer Investigational Site
Atlanta, Georgia, United States, 30339-3915
Pfizer Investigational Site
Jonesboro, Georgia, United States, 30236
Pfizer Investigational Site
Tucker, Georgia, United States, 30084
United States, Illinois
Pfizer Investigational Site
Chicago, Illinois, United States, 60611
United States, Kansas
Pfizer Investigational Site
Wichita, Kansas, United States, 67214
United States, Mississippi
Pfizer Investigational Site
Jackson, Mississippi, United States, 39202
United States, New York
Pfizer Investigational Site
Brooklyn, New York, United States, 11203
Pfizer Investigational Site
New York, New York, United States, 10003
Pfizer Investigational Site
Stony Brook, New York, United States, 11794
United States, North Carolina
Pfizer Investigational Site
Huntersville, North Carolina, United States, 28078
Pfizer Investigational Site
Winston-Salem, North Carolina, United States, 27157-1042
United States, Ohio
Pfizer Investigational Site
Akron, Ohio, United States, 44304
Pfizer Investigational Site
Cincinnati, Ohio, United States, 45267
United States, Oregon
Pfizer Investigational Site
Portland, Oregon, United States, 97209
Pfizer Investigational Site
Portland, Oregon, United States, 97210
United States, Pennsylvania
Pfizer Investigational Site
Philadelphia, Pennsylvania, United States, 19107
United States, Texas
Pfizer Investigational Site
Austin, Texas, United States, 78705
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Dallas, Texas, United States, 75246
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Galveston, Texas, United States, 77555
Pfizer Investigational Site
Houston, Texas, United States, 77009
Pfizer Investigational Site
Lyon, Cedex 02, France, 69288
Pfizer Investigational Site
Paris, Cedex 10, France, 74575
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Lyon, Cedex 3, France, 69437
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Nantes, France, 44035
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Ulm, Bavaria, Germany, 89070
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Brescia, Italy, 25123
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Milano, Italy, 20127
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Milano, Italy, 20157
Pfizer Investigational Site
Roma, Italy, 00149
South Africa
Pfizer Investigational Site
Cape Town, South Africa, 7925
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Cape Town, South Africa, 7405
Pfizer Investigational Site
Johannesburg, South Africa, 02198
Pfizer Investigational Site
Johannesburg, South Africa, 2193
Pfizer Investigational Site
Johannesburg, South Africa, 2008
Pfizer Investigational Site
Pietermaritzburg, South Africa, 3201
Pfizer Investigational Site
Port Elizabeth, South Africa, 6001
Pfizer Investigational Site
Pretoria North, South Africa, 0182
Pfizer Investigational Site
Soweto, South Africa, 2013
Pfizer Investigational Site
Baracaldo, Bilbao, Vizcaya, Spain, 48903
Pfizer Investigational Site
Bilbao, Vizcaya, Spain, 48903
Pfizer Investigational Site
Barcelona, Spain, 08035
Pfizer Investigational Site
Cordoba, Spain, 14004
Sponsors and Collaborators
  More Information

No publications provided

Responsible Party: Director, Clinical Trial Disclosure Group, Pfizer, Inc. Identifier: NCT00051844     History of Changes
Other Study ID Numbers: A4311002
Study First Received: January 16, 2003
Last Updated: May 9, 2011
Health Authority: United States: Food and Drug Administration

Keywords provided by Pfizer:
NNRTI Failure
HIV Infections

Additional relevant MeSH terms:
Acquired Immunodeficiency Syndrome
HIV Infections
Immune System Diseases
Immunologic Deficiency Syndromes
Lentivirus Infections
RNA Virus Infections
Retroviridae Infections
Sexually Transmitted Diseases
Sexually Transmitted Diseases, Viral
Slow Virus Diseases
Virus Diseases
Reverse Transcriptase Inhibitors
Anti-Infective Agents
Anti-Retroviral Agents
Antiviral Agents
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Nucleic Acid Synthesis Inhibitors
Pharmacologic Actions
Therapeutic Uses processed this record on February 27, 2015