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A Worldwide, Phase I, Dose-Escalating Study of a 3-Dose Regimen of the MRKAd5 (Clade B) Vaccine in Healthy Adults (V520-018)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT00849732
Recruitment Status : Completed
First Posted : February 24, 2009
Last Update Posted : February 27, 2015
Sponsor:
Collaborators:
Information provided by (Responsible Party):

Study Description
Brief Summary:
This three stage study will evaluate the safety and tolerability of MRKAd5 HIV-1 Gag Vaccine. In Stage I subjects will be randomized to receive the vaccine at 1x10^9 viral particles/dose (vp/d) or placebo. In Stage II subjects will be randomized to receive the vaccine at 1x10^10 vp/d or placebo. In Stage III subjects will be randomized to receive the vaccine at 1x10^9 vp/d, at 1x10^10 vp/d, or placebo. Immunogenicity of the single dose regimen of MRKAd5 HIV-1 Gag Vaccine will also be measured.

Condition or disease Intervention/treatment Phase
HIV-1 HIV Infections Biological: V520 Biological: Comparator: V520 (1x10^9 vp/d) Biological: Comparator: V520 (1x10^10 vp/d) Biological: Comparator: Placebo Phase 1

Study Design

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 360 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Prevention
Official Title: A Worldwide, Phase I, Dose-Escalating Study of Safety, Tolerability, and Immunogenicity of a 3-Dose Regimen of the MRKAd5 HIV-1 Gag Vaccine in Healthy Adults
Study Start Date : June 2003
Primary Completion Date : October 2006
Study Completion Date : February 2011

Resource links provided by the National Library of Medicine

MedlinePlus related topics: HIV/AIDS
U.S. FDA Resources

Arms and Interventions

Arm Intervention/treatment
Experimental: 1
V520 (1x10^9 vp/d)
Biological: V520
Intentionally Blank
Biological: Comparator: V520 (1x10^9 vp/d)
1.0 mL intramuscular injection of MRKAd5 HIV-1 gag vaccine at 1x10^9 vp/d given at Day 1, Week 4, and Week 26
Experimental: 2
V520 (1x10^10 vp/d)
Biological: Comparator: V520 (1x10^10 vp/d)
1.0 mL intramuscular injection of MRKAd5 HIV-1 gag vaccine at 1x10^10 vp/d given at Day 1, Week 4, and Week 26
Placebo Comparator: 3
Placebo to V520
Biological: Comparator: Placebo
Placebo to MRKAd5 HIV-1 gag vaccine 1.0 mL intramuscular injection given at Day 1, Week 4, and Week 26


Outcome Measures

Primary Outcome Measures :
  1. Safety and tolerability of 3 dose prime-boost regimen of MRKAd5 HIV-1 gag vaccine [ Time Frame: 4 weeks after third vaccination ]

Secondary Outcome Measures :
  1. breadth of immune response measured by several assays [ Time Frame: 4 weeks after third vaccination ]

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 50 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Subject is in good general health
  • Subject tests negative for Hepatitis B, Hepatitis C, and HIV
  • Subjects of reproductive potential agree to use an accepted method of birth control through the entire study

Exclusion Criteria:

  • Subject has a recent history of fever at time of vaccination
  • Subject has received immune globulin or blood product 3 months prior to injection
  • Subject has been vaccinated with live virus vaccine 30 days prior to receipt of first dose
  • Subject has been vaccinated with inactivated vaccine with 14 days prior to receipt of first dose
  • Subject has a chronic medical condition that is considered progressive
  • Subject has history of malignancy
  • Subject weighs less than 105 lb.
  • Female subject is pregnant or breast feeding, Male subject is planning to impregnate during the first year of study
  • Subject has contraindication to intramuscular injection
  • Subject is unlikely or unwilling to adhere to lower risk sex practices during the course of the study
  • Subject has a tattoo on the deltoid region of the arm or the injection of Depo-Provera
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00849732


Sponsors and Collaborators
Merck Sharp & Dohme Corp.
HIV Vaccine Trials Network
National Institute of Allergy and Infectious Diseases (NIAID)
Investigators
Study Director: Medical Monitor Merck Sharp & Dohme Corp.
More Information

Publications:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Merck Sharp & Dohme Corp.
ClinicalTrials.gov Identifier: NCT00849732     History of Changes
Other Study ID Numbers: V520-018
2009_549
First Posted: February 24, 2009    Key Record Dates
Last Update Posted: February 27, 2015
Last Verified: February 2015

Keywords provided by Merck Sharp & Dohme Corp.:
HIV Seronegativity
Preventive Vaccine

Additional relevant MeSH terms:
HIV Infections
Lentivirus Infections
Retroviridae Infections
RNA Virus Infections
Virus Diseases
Sexually Transmitted Diseases, Viral
Sexually Transmitted Diseases
Immunologic Deficiency Syndromes
Immune System Diseases
Vaccines
Immunologic Factors
Physiological Effects of Drugs