H7 Influenza Prime-Boost Regimens in Healthy Adults: Recombinant H7 DNA Plasmid Vaccine, VRC-FLUDNA071-00-VP, Administered Alone or With Monovalent Influenza Subunit Virion H7N9 Vaccine (MIV) as Prime With MIV Boost Compared to MIV Prime With MIV Boo...

VRC 315 STUDY:

A Phase I Open-Label, Randomized Study of H7 Influenza Prime-Boost Regimens in Healthy Adults: Recombinant H7 DNA Plasmid Vaccine, VRC-FLUDNA071-00-VP, Administered Alone or with Monovalent Influenza Subunit Virion H7N9 Vaccine (MIV) as Prime with MIV Boost Compared to MIV Prime with MIV Boost

STUDY DESIGN:

This is a Phase I, randomized, open-label study to evaluate the safety, tolerability, and immunogenicity of prime-boost vaccination regimens against H7N9 Influenza. A vaccination regimen with the VRC-FLUDNA071-00-VP (H7 DNA) vaccine administered alone or concurrently in different arms with A/Shanghai/2/2013(H7N9) (MIV) as prime followed by inactivated MIV boost will be compared to MIV-MIV prime-boost with a 16 week boost interval. The primary hypothesis is that all the H7 DNA prime-MIV boost, DNA+MIV prime-MIV boost, and MIV-MIV study regimens will be safe for human administration. A secondary hypothesis is that the H7 DNAMIV regimen will elicit a greater frequency and/or magnitude of antibody against H7 than the MIV-MIV regimen. The primary objective is to evaluate the safety and tolerability in healthy adults of the investigational vaccine regimens. Secondary objectives are related to the immunogenicity of the vaccination regimens.

PRODUCT DESCRIPTION:

The investigational VRC-FLUDNA071-00-VP vaccine was developed by VRC, NIAID and is composed of a single closed-circular DNA plasmid that encodes the H7 hemagglutinin (HA) protein of A/Anhui/1/2013 (H7N9) influenza, and is supplied in single dose vials at a concentration of 4 mg/mL. H7 DNA vaccinations will be 4 mg administered as a 1 mL intramuscularly (IM) using the Biojector o 2000 Needle-Free Injection Management System (Biojector). The inactivated H7N9 vaccine is monovalent subunit virion vaccine, A/Shanghai/2/2013(H7N9) MIV, manufactured by Sanofi Pasteur, Inc (Swiftwater, PA), and supplied at 30 mcg/0.5 mL per vial. The H7N9 MIV vaccinations will be 45 mcg administered as a 0.75 mL IM injection using needle and syringe. All injections will be in the deltoid muscle.

SUBJECTS:

A total of up to 36 healthy adults, ages 18-60 years will be enrolled.

STUDY PLAN:

Subjects will be randomized equally into the three study groups and will receive two vaccinations as shown in the schema. The protocol requires 7 clinic visits and a telephone follow-up contact after each study injection. Durability of immune response will be followed through Study Week 28.

STUDY DURATION:

Subjects will be evaluated for safety and immune responses throughout the study for 12 weeks following the boost. Duration of time on study will be 28 weeks.

• INCLUSION CRITERIA:

A subject must meet all of the following criteria:

• 18 to 60 years old.
• Available for clinic visits for up to 28 weeks after enrollment.
• Able to provide proof of identity to the satisfaction of the study clinician completing the enrollment process.
• Willing to donate blood for sample storage to be used for future research.
• In good general health without clinically significant medical history.
• Received a current seasonal influenza vaccine at least 2 weeks before enrollment.
• Physical examination and laboratory results without clinically significant findings and a Body Mass Index (BMI) less than or equal to 40 within the 56 days prior to enrollment.

Laboratory Criteria within 56 days prior to enrollment:

• Hemoglobin within institutional normal limits
• White blood cells (WBC) and differential either within institutional normal range or accompanied by site physician approval
• Total lymphocyte count greater than or equal to 800 cells/mm3
• Platelets = 125,000 500,000/mm3
• Alanine aminotransferase (ALT) less than or equal to 1.25 x upper limit of normal (ULN)
• Serum creatinine less than or equal to .1 x ULN based on the institutional normal range

Criteria applicable to women of childbearing potential:

• Negative human chorionic gonadotropin ( <=-HCG) pregnancy test (urine or serum) on day of enrollment
• Agree to use an effective means of birth control from 21 days prior to enrollment through 4 weeks after the second study vaccination

Exclusion criteria

A subject will be excluded if one or more of the following conditions apply. Women Specific:

• Breast-feeding or planning to become pregnant while participating in the study

Subject has received any of the following substances:

• More than 10 days of systemic immunosuppressive medications or cytotoxic medications within the 4 weeks prior to enrollment or any within the 14 days prior to enrollment
• Blood products within 16 weeks prior to enrollment
• Live attenuated vaccines within 4 weeks prior to initial study vaccine administration
• Investigational research agents within 4 weeks prior to enrollment or planning to receive investigational products while on the study
• Medically indicated subunit or killed vaccines, e.g. influenza, pneumococcal within 2 weeks of initial study vaccine administration unless approved by the study Principal Investigator (PI)
• Allergy treatment with antigen injections, unless on maintenance schedule
• Current anti-TB prophylaxis or therapy
• Previous H7 avian influenza investigational vaccine

Subject has a history of any of the following clinically significant conditions:

• Contraindication to receiving an FDA-approved current seasonal influenza vaccination including hypersensitivity to eggs
• Serious reactions to vaccines that preclude receipt of study vaccinations as determined by the investigator
• Hereditary angioedema, acquired angioedema, or idiopathic forms of Angioedema
• Asthma that is unstable or required emergent care, urgent care, hospitalization or intubation during the past two years or that requires the use of oral or intravenous corticosteroids
• Diabetes mellitus (type I or II), with the exception of gestational diabetes
• Thyroid disease that is not well controlled
• Idiopathic urticaria within the past year
• Hypertension that is not well controlled
• Bleeding disorder diagnosed by a doctor (e.g. factor deficiency, coagulopathy, or platelet disorder requiring special precautions) or significant bruising or bleeding difficulties with IM injections or blood draws
• Malignancy that is active or treated malignancy for which there is not reasonable assurance of sustained cure or malignancy that is likely to recur during the period of the study
• Seizure disorder other than: 1) febrile seizures, 2) seizures secondary to alcohol withdrawal more than 3 years ago, or 3) seizures that have not required treatment within the last 3 years
• Asplenia, functional asplenia or any condition resulting in the absence or removal of the spleen.
• Type 1 hypersensitivity reaction to aminoglycoside antibiotics
• Guillain-Barr(SqrRoot)(Copyright) Syndrome
• Psychiatric condition that precludes compliance with the protocol; past or present psychoses; past or present bipolar disorder; disorder requiring lithium; or within 5 years prior to enrollment, a history of suicide plan or attempt
• Any medical, psychiatric, social condition, occupational reason or other responsibility that, in the judgment of the investigator, is a contraindication to protocol participation or impairs a volunteer s ability to give informed consent