Safety of and Immune Response to a Dengue Virus Vaccine (rDEN4delta30-4995) in Healthy Adults

This study has been completed.
Sponsor:
Collaborator:
Johns Hopkins Bloomberg School of Public Health
Information provided by:
National Institute of Allergy and Infectious Diseases (NIAID)
ClinicalTrials.gov Identifier:
NCT00322946
First received: May 4, 2006
Last updated: August 5, 2009
Last verified: November 2008
  Purpose

Dengue fever, which is caused by dengue viruses, is a major health problem in tropical and subtropical regions of the world. The purpose of this study is to evaluate the safety and immune response to the dengue vaccine DEN4delta30-4995 in healthy adults.


Condition Intervention Phase
Dengue
Biological: rDEN4delta30-4995
Biological: Placebo
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator)
Primary Purpose: Prevention
Official Title: Phase 1 Study of the Safety and Immunogenicity of rDEN4delta30-4995, a Live Attenuated Virus Vaccine Candidate for the Prevention of Dengue Serotype 4

Resource links provided by NLM:


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

Primary Outcome Measures:
  • Frequency of vaccine-related adverse events, graded by severity for each dose [ Time Frame: Throughout study ] [ Designated as safety issue: Yes ]
  • Immunogenicity of the rDEN4delta30-4995 vaccine against DEN4 virus by measurement of plaque reduction neutralization titers (PRNT) [ Time Frame: At Days 28 and 42 ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Durability of antibody responses to DEN4 virus [ Time Frame: At Month 6 ] [ Designated as safety issue: No ]
  • Frequency, quantity, and duration of viremia in each dose cohort studied based on the mean peak viremia, mean day onset of viremia, and mean duration of viremia of each dose cohort [ Time Frame: Throughout study ] [ Designated as safety issue: No ]
  • Number of vaccinees infected with the rDEN4delta30-4995 chimeric vaccine [ Time Frame: Throughout study ] [ Designated as safety issue: No ]

Estimated Enrollment: 84
Study Start Date: January 2007
Primary Completion Date: August 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
One subcutaneous vaccination with rDEN4delta30-4995 vaccine (10^5 PFU dose) into the deltoid region of either arm.
Biological: rDEN4delta30-4995
Live attenuated rDEN4delta30-4995 vaccine (one of three doses)
Experimental: 2
One subcutaneous vaccination with rDEN4delta30-4995 vaccine (10^3 PFU dose) into the deltoid region of either arm. This arm will enroll after Arm 1.
Biological: rDEN4delta30-4995
Live attenuated rDEN4delta30-4995 vaccine (one of three doses)
Experimental: 3
One subcutaneous vaccination with rDEN4delta30-4995 vaccine (10^1 PFU dose) into the deltoid region of either arm. This arm will enroll after Arms 1 and 2.
Biological: rDEN4delta30-4995
Live attenuated rDEN4delta30-4995 vaccine (one of three doses)
Placebo Comparator: 4
One subcutaneous vaccination with placebo into the deltoid region of either arm.
Biological: Placebo
Placebo for rDEN4delta30-4995

Detailed Description:

Dengue viruses account for more than 50 million cases of dengue fever and a half million cases of the more severe disease, dengue hemorrhagic fever/dengue shock syndrome. Infection with dengue viruses is the leading cause of hospitalization and death in children in at least eight Asian countries. The goal of producing a vaccine against dengue fever is to induce a long-lived antibody response against all four dengue serotypes. The rDEN4delta30-4995 vaccine candidate is a live attenuated recombinant virus derived from rDEN4delta30 for protection against dengue virus serotype 4. The purpose of this study is to evaluate the safety, reactogenicity, and immunogenicity of rDEN4delta30-4995 in healthy adults.

This study will last 180 days (6 months). Participants in Cohort 1 will be randomly assigned to receive the highest dose of rDEN4delta30 or placebo at study entry. Participants in Cohort 2 will be randomly assigned to receive a lower dose of rDEN4delta30 or placebo. Participants in Cohort 3 will be randomly assigned to receive the lowest dose of rDEN4delta30 or placebo. Cohorts 2 and 3 will begin after a safety review of all participants in the previous cohort.

After initial vaccination, participants in Cohort 1 will be followed every other day for the first 16 days of the study, monitoring their temperature three times a day through Day 16 and recording these measurements in a diary. After Day 16, study visits will occur on Days 21, 28, 42, and 180 and will include a physical exam and blood collection. Some participants will also be asked to undergo a skin biopsy or additional blood collection at selected visits.

  Eligibility

Ages Eligible for Study:   18 Years to 50 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Adult males and non-pregnant females between 18 and 50 years of age
  • Good general health
  • Available for the duration of the study
  • Willing to use acceptable methods of contraception for the duration of the study

Exclusion Criteria:

  • Significant neurologic, cardiac, lung, liver, rheumatologic, autoimmune, or kidney disease
  • Behavioral, cognitive, or psychiatric disease that, in the opinion of the investigator, may interfere with the study
  • Significant laboratory abnormalities
  • Medical, work, or family problems as a result of alcohol or illegal drug use within 12 months prior to study entry
  • History of severe allergic reaction or anaphylaxis
  • Severe asthma
  • HIV-1 serotype infected
  • Hepatitis C virus (HCV) infected
  • Hepatitis B surface antigen positive
  • Immunodeficiency syndrome
  • Use of corticosteroids or immunosuppressive medications within 2 weeks prior to study entry. Individuals using topical or nasal corticosteroids are not excluded.
  • Live vaccine within 4 weeks prior to study entry
  • Killed vaccine within 2 weeks prior to study entry
  • Absence of spleen
  • Blood products within 6 months prior to study entry
  • Previous dengue virus or other flavivirus (e.g., yellow fever virus, St. Louis encephalitis, West Nile virus) infection
  • Prior receipt of yellow fever or dengue vaccine (licensed or experimental)
  • Plans to travel to an area where dengue infection is common
  • Received an investigational agent within 30 days prior to study entry
  • Other condition that, in the opinion of the investigator, would affect participation in the study
  • Pregnant or breastfeeding
  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: NCT00322946

Locations
United States, Tennessee
Vanderbilt University School of Medicine
Nashville, Tennessee, United States, 37232-2581
Sponsors and Collaborators
Johns Hopkins Bloomberg School of Public Health
Investigators
Principal Investigator: Anna Durbin, MD Center for Immunization Research (CIR), Johns Hopkins School of Public Health
  More Information

Publications:
Responsible Party: Anna Durbin, MD, Center for Immunization Research, Johns Hopkins School of Public Health
ClinicalTrials.gov Identifier: NCT00322946     History of Changes
Other Study ID Numbers: CIR 221, WIRB Protocol Number 20061807
Study First Received: May 4, 2006
Last Updated: August 5, 2009
Health Authority: United States: Food and Drug Administration

Keywords provided by National Institute of Allergy and Infectious Diseases (NIAID):
Dengue Fever
Dengue Vaccine
Dengue Virus
Dengue Hemorrhagic Fever
Dengue Shock Syndrome

Additional relevant MeSH terms:
Dengue
Arbovirus Infections
Virus Diseases
Flavivirus Infections
Flaviviridae Infections
RNA Virus Infections
Hemorrhagic Fevers, Viral

ClinicalTrials.gov processed this record on July 22, 2014