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VRC 307: A Double-Blind, Randomized Phase I Study of the Safety and Immunogenicity of a Prime-Boost Schedule of the Investigational DNA Trivalent Influenza Vaccine, VRC-FLUDNA047-00-VP, Followed by the 2008/2009 Seasonal Influenza Trivalent Inactivat...

NCT00858611 · Status: COMPLETED · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 51

Last updated 2017-07-02

No results posted yet for this study

Summary

Objectives:

* To evaluate the safety and tolerability of a prime-boost study regimen that includes the recombinant DNA vaccine followed by licensed 2008/2009 FluLaval(Registered Trademark) in adults ages 18-50 years and adults ages 51-70 years as compared with control groups that receive the licensed vaccine only.
* To evaluate whether the study participants in each age group receiving a prime-boost schedule have a greater frequency of H1 or H3 neutralizing antibodies compared with those of the same age group who received only the 2008/2009 trivalent influenza vaccine.
* To evaluate differences in antibody or T cell responses (quantity, quality, or durability) between the two groups.

Eligibility:

* Participants ages 18 to 70 years of age who are available for clinic follow-up through Week 24 and who have no previously undiagnosed clinically significant chronic diseases. Participants will provide blood samples for further testing to determine eligibility. Females must not be or become pregnant during the study.
* Volunteers who have been immunized with the current season FDA-approved influenza vaccine (2008-2009), or who are being treated for tuberculosis may not participate.

Design:

* The study lasts for 24 weeks.
* Week 0: The first day of Week 0 (i.e., Day 0) is defined as the day of enrollment and first injection. Specific eligibility is reviewed. Participants will receive an injection of either the DNA vaccine VRC-FLUDNA047-00-VP (at 4 mg dosage) or a placebo.
* Week 4: All study participants will receive an injection of the trivalent seasonal influenza vaccine, according to the manufacturer's package insert directions.
* Participants will be given 7-day diary cards on which to record temperature and symptoms (e.g., muscle aches, headache, chills, nausea) and injection site reactions (e.g., pain, tenderness). Participants may also enter this information via the Internet. Presence of symptoms may require additional visits to the clinic.
* Participants will return to the clinic 2 weeks after each injection for the following procedures:
* Blood draws for further tests to determine the immune system's response to the vaccine(s) Clinical evaluations: vital signs and weight, examinations of the lymph nodes, and targeted physical exam on any visit if indicated by interim complaints or laboratory findings.

Conditions

  • Influenza, Human

Interventions

DRUG

VRC-FLUDNA047-00-VP

DRUG

Flulaval (Registered) Seasonal Influenza Vaccine

Sponsors & Collaborators

  • National Institute of Allergy and Infectious Diseases (NIAID)

    lead NIH

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2009-03-03
Primary Completion
2010-06-21
Completion
2010-06-21

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00858611 on ClinicalTrials.gov