DNA-based Influenza Vaccine in the Elderly

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. Identifier: NCT01587131
Recruitment Status : Completed
First Posted : April 27, 2012
Last Update Posted : April 17, 2015
Inovio Pharmaceuticals
Information provided by (Responsible Party):
University of Manitoba

Brief Summary:
The purpose of this study is to determine whether FVH1, a DNA-based influenza vaccine, will be safe and generally well tolerated in healthy elderly adult volunteers and will result in greater immunogenicity when used to prime the immune response to a dose of a trivalent inactivated seasonal vaccine.

Condition or disease Intervention/treatment Phase
Influenza, Human Orthomyxoviridae Infections RNA Virus Infections Virus Diseases Respiratory Tract Infections Respiratory Tract Diseases Biological: FVH1 - a DNA-based influenza vaccine Phase 1

Detailed Description:

The use of DNA plasmids containing genes that express viral antigens may be a promising way to formulate a vaccine that can effectively prevent infection and disease caused by the H1N1 influenza virus. Plasmid vectors are simple to construct and are easy to manufacture at a relatively low cost. Vaccination with plasmids that express influenza proteins should induce the development of serum antibodies and might also induce significant quantities of secretory IgA antibodies and/or CMI. The DNA sequences included in the vaccine could also result in the proliferation of T lymphocytes that could broaden the effectiveness of the vaccine to include variant strains of H1N1 with antigenically modified HA (i.e., drifted strains).

Electroporation (EP) is a technology in which a transmembrane electrical field is applied to increase the permeability of cell membranes to create microscopic pathways (pores) and thereby enhance the uptake of drugs, vaccines, or other agents into target cells. Their presence allows macromolecules, ions, and water to pass from one side of the membrane to the other. The presence of a constant field influences the kinetics of directional translocation of the macromolecular plasmid, such that the plasmid delivery in vivo has been sufficient to achieve physiological levels of secreted proteins. ID injection of a plasmid followed by EP has been used very successfully to deliver therapeutic genes that encode for a variety of hormones, cytokines, or enzymes in a variety of species. EP is currently being used in humans to deliver cancer vaccines and therapeutics as well as in gene therapy. The expression levels are increased by as much as 3 orders of magnitude over plasmid injection alone.

The use of EP via the CELLECTRA® device should increase the expression of H1N1 influenza virus genes in the study vaccine.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 50 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Phase I, Open Label Study of a DNA Vaccine's Ability to Increase the Immune Response to the Trivalent Seasonal Influenza Vaccine in the Elderly
Study Start Date : June 2012
Actual Primary Completion Date : August 2014
Actual Study Completion Date : March 2015

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Flu Flu Shot

Arm Intervention/treatment
Experimental: Group 1- DNA prime DNA boost
0.9 mg of FVH1 vaccine delivered ID followed by electroporation on Day 0, Week 15 and Week 27
Biological: FVH1 - a DNA-based influenza vaccine
0.9 mg FVH1 vaccine

Experimental: Group 2 - DNA prime Seasonal Vaccine boost
0.9 mg FVH1 vaccine delivered ID followed by electroporation on Day 0 and Trivalent Seasonal Influenza Vaccine delivered IM on Week 15
Biological: FVH1 - a DNA-based influenza vaccine
0.9 mg FVH1 vaccine

Placebo Comparator: Group 3 - sWFI prime Seasonal Vaccine boost
100 microliters of sterile water for injection delivered ID followed by electroporation on Day 0 and Trivalent Seasonal Influenza Vaccine delivered IM on Week 15
Biological: FVH1 - a DNA-based influenza vaccine
0.9 mg FVH1 vaccine

Primary Outcome Measures :
  1. Safety and tolerability of a DNA-based influenza vaccine composed of a combination of two different H1 HA plasmids administered ID followed by electroporation in healthy elderly adult subjects [ Time Frame: Day 0 through Month 12 ]
    Frequency and severity of local and systemic reactogenicity signs and symptoms, adverse events and serious adverse events

Secondary Outcome Measures :
  1. Humoral and cellular immune responses [ Time Frame: Day 0 through Month 12 ]
    Magnitude and frequency of antibody and cell mediated immune response to influenza proteins

Information from the National Library of Medicine

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Ages Eligible for Study:   65 Years and older   (Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Written informed consent in accordance with institutional guidelines;
  • Adults of either gender ≥ 65 years of age at entry;
  • Healthy subjects, as judged by the Qualified Investigator based on medical history, physical examination, and normal results of an electrocardiogram (ECG), complete blood count (CBC), serum chemistries, and urinalysis done up to 4 weeks prior to enrollment and administration of vaccine or placebo by ID/EP;
  • Current non-smoker (for 3 months prior to vaccine study);
  • Willing to forego any other influenza vaccination during the study;
  • Able and willing to comply with all study procedures.

Exclusion Criteria:

  • Any concurrent condition requiring the continued use of systemic or topical steroids at or near the injection site (excluding inhaled and eye drop-containing corticosteroids) or the use of other immunosuppressive agents. All other corticosteroids must be discontinued ≥ 4 weeks prior to Day 1 of study vaccine administration;
  • Administration of any blood product within 3 months of enrollment;
  • Subjects with contraindications to influenza vaccination other than egg allergy (such as a history of Guillain-Barre Syndrome after receiving influenza vaccine);
  • Administration of any vaccine within 6 weeks of enrollment; subjects may not receive any licensed seasonal influenza vaccine during the study unless they have been assigned to a study group receiving the seasonal vaccine;
  • Participation in a study with an investigational compound or device within 4 weeks of signing informed consent;
  • Subjects with cardiac pre-excitation syndromes (such as Wolff-Parkinson-White);
  • Subjects with a history of seizures (unless seizure free for 5 years);
  • Subjects with tattoos, scars, or active lesions/rashes within 2 cm of the site of vaccination + EP;
  • Subjects with any implanted heart leads;
  • Active drug or alcohol use or dependence that, in the opinion of the investigator, would interfere with adherence to study requirements;
  • Prisoner subjects who are compulsorily detained (involuntarily incarcerated) for treatment of either a psychiatric or physical (i.e. infections disease) illness must not be enrolled into this study;
  • Any other conditions judged by the investigator that would limit the evaluation of a subject.

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 identifier (NCT number): NCT01587131

Canada, Manitoba
MS Building Health Sciences Centre
Winnipeg, Manitoba, Canada, R3A 1R9
Sponsors and Collaborators
University of Manitoba
Inovio Pharmaceuticals
Principal Investigator: Gary Kobinger, PhD National Microbiology & University of Manitoba
Study Director: Trina Racine, PhD National Microbiology Laboratory, Canada

Responsible Party: University of Manitoba Identifier: NCT01587131     History of Changes
Other Study ID Numbers: B2011:131
First Posted: April 27, 2012    Key Record Dates
Last Update Posted: April 17, 2015
Last Verified: January 2013

Keywords provided by University of Manitoba:
Universal Influenza
Intradermal DNA-Based Vaccine

Additional relevant MeSH terms:
Influenza, Human
Communicable Diseases
Virus Diseases
Respiratory Tract Infections
Respiratory Tract Diseases
Orthomyxoviridae Infections
RNA Virus Infections
Immunologic Factors
Physiological Effects of Drugs