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HealthyPhase 1NCT01142362

Study of VGX-3400X, H5N1 Avian Influenza Virus DNA Plasmid + Electroporation in Healthy Adults

A Phase 1 study testing VGX-3400X in people with Healthy, run by Inovio Pharmaceuticals at 2 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

DNA vaccines consist of small pieces of DNA also known as plasmids, and have several potential advantages over traditional vaccines. Thus far, DNA vaccines appear to be well tolerated in humans. Read more about this study

Who is it for?
Ages 18 to 50 yearsHealthy volunteers can take part
Conditions the study is for
Healthy
What is being tested?
VGX-3400X
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
32 participants
Where
2 sitesUnited States
Study dates
Jun 2010to Nov 2011
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 50 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Written informed consent in accordance with institutional guidelines. If required by local law, candidates must also authorize the release and use of protected health information (PHI);
  • Adults of either gender 18-50 years of age;
  • Healthy subjects as judged by the Investigator;
  • Current nonsmoker;
  • Body mass index (BMI) ≤30 kg/m^2
  • Women of child-bearing potential (WOCBP) agree to remain sexually abstinent, use medically effective contraception or have a partner who is sterile for the duration of the study (7 months);
  • Able and willing to comply with all study procedures.

Who cannot join

  • Positive serological test for HIV, hepatitis C virus or hepatitis B virus surface antigen (HBsAg);
  • Pregnant or breastfeeding subjects;
  • Any concurrent condition requiring the continued use of systemic or topical steroids at or near the injection site or the use of immunosuppressive agents. All other corticosteroids must be discontinued > 4 weeks prior to Day 0 of study vaccine administration;
  • Administration of any blood product within 3 months of enrollment;
  • Prior receipt of an H5N1 influenza vaccine at any time;
  • Subjects with a contraindication to influenza vaccination other than egg allergy (such as Guillain-Barre Syndrome after receiving influenza vaccination);
Show all 15Show fewer
  • Administration of any vaccine within 6 weeks of enrollment;
  • Subject is currently participating or has participated in a study with an investigational compound or device within 30 days 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 implantable leads;
  • Active drug or alcohol use or dependence;
  • Prisoners or subjects who are compulsorily detained;
  • Any other conditions judged by the investigator that would limit the evaluation of a subject.

Trial locations and contacts

2 sites in 1 country.

United States2 sites
  • Vince & Associates

    Overland Park, Kansas, 66212

  • Accelovance

    Rockville, Maryland, 20850

Other trials in United States

About this study

Official title: Phase I, Open-label, Dose Escalation Study to Evaluate the Safety, Tolerability, and Immunogenicity in Healthy Adults of a DNA Plasmid Vaccine for H5 Avian Influenza (VGX-3400X) Administered by Intramuscular (IM) Injection Followed by Electroporation (EP)

DNA vaccines consist of small pieces of DNA also known as plasmids, and have several potential advantages over traditional vaccines. Thus far, DNA vaccines appear to be well tolerated in humans. The investigators have developed a DNA vaccine, VGX-3400X, which includes plasmids targeting the proteins of the H5N1 avian influenza virus. The vaccine will be delivered via electroporation (EP) which uses the CELLECTRA constant current device to deliver a small electric charge following injection, since animal studies have shown that this delivery method increases the immune response to vaccine. The vaccine will be given to 30 healthy adult subjects. It is hypothesized that VGX-3400X + EP will be well tolerated and immunogenic.

Read the 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 H5N1 avian 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 H5N1 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. IM injection of 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 H5N1 influenza virus genes in the VGX-3400X DNA vaccine.

Conditions
Healthy
Being tested
VGX-3400X
Keywords
H5N1, Avian Influenza, DNA Vaccine, Intramuscular (IM) Injection, Electroporation, Healthy Adults
Medical subject headings
Influenza in Birds

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • VGX-3400XBiological

    DNA plasmids delivered via IM injection + electroporation using CELLECTRA device

Study groups in NCT01142362
Study groupRoleWhat they receive
0.6mg of DNA/doseExperimentalSubjects will receive a 2 dose series of VGX-3400X containing 0.6 mg DNA/dose administered via IM injection + electroporation at Day 0 and Month 1
Receives: Biological: VGX-3400X
2mg DNA/doseExperimentalSubjects will receive a 2 dose series of VGX-3400X containing 2mg of DNA/dose administered via IM injection + electroporation at Day 0 and Month 1
Receives: Biological: VGX-3400X
6mg DNA/doseExperimentalSubjects will receive a 2 dose series of VGX-3400X containing 6 mg DNA/dose administered via IM injection + electroporation at Day 0 and Month 1
Receives: Biological: VGX-3400X

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Safety and tolerability

    Frequency and severity of local and systemic reactogenicity signs and symptoms, adverse events and serious adverse events.

    Measured: Day 0 through Month 12

Secondary outcomes (1)
  1. Humoral and cellular immune responses

    Magnitude and frequency of antibody and cell-mediated immune responses to influenza proteins.

    Measured: Day 0 through Month 12

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 Jun 2010 (estimated)
  2. Study startJun 2010
  3. Primary completionNov 2011
  4. Study completionNov 2011

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Prevention
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
32 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01142362
Sponsor's protocol ID
FLU-001
Status last verified
Sep 2017
First submitted
27 May 2010
Last updated
13 Sep 2017
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing VGX-3400X in people with Healthy, run by Inovio Pharmaceuticals at 2 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 15 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 13 Sep 2017. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Safety and tolerability (time frame: Day 0 through Month 12). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Sep 2017.

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