A Comparison of Two Tests for Anti-HIV Drug Resistance

This study has been completed.
Sponsor:
Information provided by:
National Institute of Allergy and Infectious Diseases (NIAID)
ClinicalTrials.gov Identifier:
NCT00006490
First received: November 8, 2000
Last updated: September 24, 2008
Last verified: July 2004
  Purpose

The purpose of this study is to compare 2 different types of tests of the HIV virus to see which specific anti-HIV drugs would work the best.

Drug resistance is a major reason for therapy failure in HIV patients. Two types of tests can detect resistance to drugs: 1) genotyping (sequencing), which looks at the DNA sequence of a virus to see whether it has developed any genetic resistance; 2) phenotyping, which looks at the ability of different drugs to suppress virus growth in the laboratory. Genotyping and phenotyping can help doctors give patients the most effective drug therapy.


Condition
HIV Infections

Study Type: Observational
Official Title: HIV-1 Resistance Testing During Antiretroviral Failure: Comparison of Sequencing Versus Phenotyping

Resource links provided by NLM:


Further study details as provided by National Institute of Allergy and Infectious Diseases (NIAID):

Estimated Enrollment: 600
Detailed Description:

The emergence of drug resistance is a major factor contributing to the failure of antiretroviral therapy in HIV-infected patients. Drug resistance can be detected by genotypic or phenotypic assays, both having distinct advantages and disadvantages. Results from genotypic and phenotypic testing are helpful in excluding from the subsequent regimen drugs to which the resistance is identified, and both tests predict virologic response to salvage therapy in patients who have failed a previous regimen. Resistance testing is likely to be beneficial as an aid in selecting a salvage regimen.

At entry, patients are randomized to Arm A (sequencing) or Arm B (phenotyping) and have a resistance test drawn while still receiving the current regimen even though regimen failure is suspected. The test results are available between Weeks 1 and 4, inclusive. There are weekly visits for the first 4 weeks after entry to monitor viral load and maintenance of the current failing (prestudy) regimen. If virologic failure is confirmed, a new regimen is chosen and prescribed at the first visit after resistance test results are available. [AS PER AMENDMENT 12/6/00: If the resistance assay fails to yield results, another regimen is chosen and prescribed based on the patient's medical and medication history.] If virologic failure is not confirmed, the current drug regimen is not changed. Otherwise, on-site study visits occur every 4 weeks until Week 24 and then every 8 weeks thereafter through Week 48. [AS PER AMENDMENT 12/6/00: on-site study visits occur every 4 weeks until Week 24 and then every 8 weeks thereafter]. Medical resource use is assessed at baseline and then every 8 weeks through Week 48. Quality of life is assessed at baseline and then every 16 weeks through Week 48.

  Eligibility

Ages Eligible for Study:   14 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria

Patients may be eligible for this study if they:

  • Are HIV-positive.
  • Have failed 2 to 4 anti-HIV regimens containing 3 or more combinations of drugs. A patient has failed his/her current regimen if he/she has, within 30 days of study entry, either a viral load (level of HIV in the blood) of at least 10,000 copies/ml or 2 tests which show a viral load between 1,000 and 10,000 copies/ml.
  • Have taken 3 or more anti-HIV drugs for 8 or more weeks before the study.
  • Are at least 14 years old.
  • Have consent of parent or guardian if less than 18 years old.

Exclusion Criteria

Patients will not be eligible for this study if they:

  • Have failed only 1 anti-HIV drug combination.
  • Have failed 5 or more anti-HIV drug combinations, each containing 3 to 5 drugs.
  • Have had and received the results of prior resistance tests.
  • Have had treatment with a combination of 6 or more anti-HIV drugs.
  • Have problems absorbing food in the intestine.
  • Have had HIV vaccines.
  • Have taken drugs that affect the immune system or investigational drugs.
  • Are taking medications not allowed with protease inhibitors (PIs) if PIs would be part of their anti-HIV treatment during the study.
  • Have failed anti-HIV therapy due to nonadherence to medication.
  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 ClinicalTrials.gov identifier: NCT00006490

  Hide Study Locations
Locations
United States, Alabama
Univ of Alabama at Birmingham
Birmingham, Alabama, United States, 35294
United States, California
Univ of Southern California / LA County USC Med Ctr
Los Angeles, California, United States, 900331079
UCLA CARE Ctr
Los Angeles, California, United States, 90095
Willow Clinic
Menlo Park, California, United States, 94025
University of California San Francisco
San Francisco, California, United States, 941104206
Univ of California San Francisco
San Francisco, California, United States, 94110
Santa Clara Valley Med Ctr / AIDS Community Rsch Consortium
San Jose, California, United States, 951282699
San Mateo AIDS Program / Stanford Univ
Stanford, California, United States, 943055107
Stanford Univ Med Ctr
Stanford, California, United States, 943055107
Harbor UCLA Med Ctr
Torrance, California, United States, 90502
United States, Colorado
Univ of Colorado Health Sciences Ctr
Denver, Colorado, United States, 80262
Denver Dept of Health and Hosps
Denver, Colorado, United States, 80262
United States, Florida
Univ of Miami School of Medicine
Miami, Florida, United States, 331361013
United States, Georgia
Emory Univ
Atlanta, Georgia, United States, 30308
United States, Hawaii
Univ of Hawaii
Honolulu, Hawaii, United States, 96816
United States, Illinois
Northwestern Univ Med School
Chicago, Illinois, United States, 60611
Rush Presbyterian - Saint Luke's Med Ctr
Chicago, Illinois, United States, 60612
The CORE Ctr
Chicago, Illinois, United States, 60612
United States, Maryland
Johns Hopkins Hosp
Baltimore, Maryland, United States, 21287
United States, Massachusetts
Harvard (Massachusetts Gen Hosp)
Boston, Massachusetts, United States, 02114
Beth Israel Deaconess - West Campus
Boston, Massachusetts, United States, 02215
Brigham and Women's Hosp
Boston, Massachusetts, United States, 02215
United States, New York
SUNY / Erie County Med Ctr at Buffalo
Buffalo, New York, United States, 14215
Bellevue Hosp / New York Univ Med Ctr
New York, New York, United States, 10016
Cornell Univ Med Ctr
New York, New York, United States, 10021
Mount Sinai Med Ctr
New York, New York, United States, 10029
Beth Israel Med Ctr
New York, New York, United States, 10003
Columbia Presbyterian Med Ctr
New York, New York, United States, 10032
Cornell Clinical Trials Unit - Chelsea Clinic
New York, New York, United States, 10011
United States, North Carolina
Univ of North Carolina
Chapel Hill, North Carolina, United States, 275997215
Carolinas Med Ctr
Charlotte, North Carolina, United States, 28203
Duke Univ Med Ctr
Durham, North Carolina, United States, 27710
Moses H Cone Memorial Hosp
Greensboro, North Carolina, United States, 27401
United States, Ohio
Univ of Cincinnati
Cincinnati, Ohio, United States, 452670405
MetroHealth Med Ctr
Cleveland, Ohio, United States, 441091998
Case Western Reserve Univ
Cleveland, Ohio, United States, 44106
Ohio State Univ Hosp Clinic
Columbus, Ohio, United States, 432101228
United States, Pennsylvania
Univ of Pennsylvania
Philadelphia, Pennsylvania, United States, 19104
Philadelphia Veterans Administration Med Ctr
Philadelphia, Pennsylvania, United States, 19104
Univ of Pittsburgh
Pittsburgh, Pennsylvania, United States, 15213
United States, Rhode Island
Miriam Hosp / Brown Univ
Providence, Rhode Island, United States, 02906
Brown Univ / Miriam Hosp
Providence, Rhode Island, United States, 02906
United States, South Carolina
Julio Arroyo
West Columbia, South Carolina, United States, 29169
United States, Tennessee
Vanderbilt Univ Med Ctr
Nashville, Tennessee, United States, 37203
United States, Texas
Univ of Texas, Southwestern Med Ctr of Dallas
Dallas, Texas, United States, 75390
United States, Washington
Univ of Washington
Seattle, Washington, United States, 98104
Puerto Rico
Univ of Puerto Rico
San Juan, Puerto Rico, 009365067
Sponsors and Collaborators
Investigators
Study Chair: Richard D'Aquila
Study Chair: Daniel Kuritzkes
  More Information

Additional Information:
No publications provided

ClinicalTrials.gov Identifier: NCT00006490     History of Changes
Other Study ID Numbers: ACTG A5076, AACTG A5076
Study First Received: November 8, 2000
Last Updated: September 24, 2008
Health Authority: United States: Federal Government

Keywords provided by National Institute of Allergy and Infectious Diseases (NIAID):
HIV-1
Drug Resistance, Microbial
Sequence Analysis, DNA
Microbial Sensitivity Tests
Genotype
Phenotype
Anti-HIV Agents

Additional relevant MeSH terms:
HIV Infections
Acquired Immunodeficiency Syndrome
Lentivirus Infections
Retroviridae Infections
RNA Virus Infections
Virus Diseases
Sexually Transmitted Diseases, Viral
Sexually Transmitted Diseases
Immunologic Deficiency Syndromes
Immune System Diseases
Slow Virus Diseases
Anti-HIV Agents
Anti-Retroviral Agents
Antiviral Agents
Anti-Infective Agents
Therapeutic Uses
Pharmacologic Actions

ClinicalTrials.gov processed this record on July 22, 2014