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...

Conditions: Influenza

Summary: background:\ - flu virus that causes disease in birds can sometimes spread to people. it can cause severe illness, even death. vaccines are used to try to create resistance to such infections. researchers want to test a new vaccination strategy, combining two different vaccine types, the h7 dna vaccine (dna vaccine) and h7n9 monovalent inactivated vaccine (miv), to see if one of two combinations offer better protection against a certain type of bird flu in humans when compared to vaccination using two doses of miv alone. objectives: * to see if 2 vaccines for bird flu, are safe and tolerable for humans. * to study immune responses to these vaccines. eligibility: - healthy adults 18 60 years old. design: * participants will be screened through a separate protocol. * participants will be randomly assigned to 1 of 3 groups. each group will get a different combination of vaccines. * participants will have about 8 clinic visits. each visit takes 2 4 hours. blood will be drawn at some visits. urine samples may be collected. * participants will receive vaccinations at 2 of the visits, 16 weeks apart. * the h7n9 miv will be injected in the upper arm using a needle and syringe. the dna vaccine will be injected in the upper arm using a device that delivers the vaccine through the skin by pressure instead of a needle. * participants will be observed for at least 30 minutes after each vaccination. * soon after each vaccination, participants will get 1 2 phone calls, come to clinic for evaluation, and complete a diary at home for 1 week. they will record their temperature and symptoms and look at the injection site daily. * participants will have follow-up blood tests.

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.

Eligibility criteria:
* inclusion criteria: a subject must meet all of the following criteria: 1. 18 to 60 years old. 2. available for clinic visits for up to 28 weeks after enrollment. 3. able to provide proof of identity to the satisfaction of the study clinician completing the enrollment process. 4. willing to donate blood for sample storage to be used for future research. 5. in good general health without clinically significant medical history. 6. received a current seasonal influenza vaccine at least 2 weeks before enrollment. 7. 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: 8. hemoglobin within institutional normal limits 9. white blood cells (wbc) and differential either within institutional normal range or accompanied by site physician approval 10. total lymphocyte count greater than or equal to 800 cells/mm3 11. platelets = 125,000 500,000/mm3 12. alanine aminotransferase (alt) less than or equal to 1.25 x upper limit of normal (uln) 13. serum creatinine less than or equal to .1 x uln based on the institutional normal range criteria applicable to women of childbearing potential: 14. negative human chorionic gonadotropin ( \<=-hcg) pregnancy test (urine or serum) on day of enrollment 15. 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: 1. breast-feeding or planning to become pregnant while participating in the study subject has received any of the following substances: 2. 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 3. blood products within 16 weeks prior to enrollment 4. live attenuated vaccines within 4 weeks prior to initial study vaccine administration 5. investigational research agents within 4 weeks prior to enrollment or planning to receive investigational products while on the study 6. 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) 7. allergy treatment with antigen injections, unless on maintenance schedule 8. current anti-tb prophylaxis or therapy 9. previous h7 avian influenza investigational vaccine subject has a history of any of the following clinically significant conditions: 10. contraindication to receiving an fda-approved current seasonal influenza vaccination including hypersensitivity to eggs 11. serious reactions to vaccines that preclude receipt of study vaccinations as determined by the investigator 12. hereditary angioedema, acquired angioedema, or idiopathic forms of angioedema 13. 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 14. diabetes mellitus (type i or ii), with the exception of gestational diabetes 15. thyroid disease that is not well controlled 16. idiopathic urticaria within the past year 17. hypertension that is not well controlled 18. 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 19. 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 20. 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 21. asplenia, functional asplenia or any condition resulting in the absence or removal of the spleen. 22. type 1 hypersensitivity reaction to aminoglycoside antibiotics 23. guillain-barr(sqrroot)(copyright) syndrome 24. 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 25. 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

Keywords: a/anhui/1/2013 (h7n9) antibody response avian influenza a/shanghai/2/2013 (h7n9) immunogenicity