Trial to Evaluate the Immunogenicity and Safety of Panblok® (H7 rHA) in Healthy Adults Aged 18 and Older

Influenza Clinical Trial

— PSC26  

Official title:

Phase 1/2 Adaptive Design Trial to Evaluate the Immunogenicity and Safety of Panblok (H7 rHA) at Three Dose Levels Adjuvanted With a Stable Oil-in-Water Emulsion Compared With Unadjuvanted H7 rHA in Healthy Adults Aged 18 and Older

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02464163
• Other study ID #: PSC26
• Status: Completed
• Phase: Phase 1/Phase 2
• First received: June 1, 2015
• Last updated: September 26, 2017
• Start date: July 2015
• Est. completion date: August 2016

Study information

• Verified date: September 2017
• Source: Protein Sciences Corporation
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The purpose of this study is to investigate the safety and immunogenicity of a recombinant hemagglutinin (rHA) influenza vaccine derived from A/Anhui/1/2013 (H7N9) administered at 3 dose levels in adjuvanted (SE) rHA formulations and 1 dose levels in an unadjuvanted rHA formulation.

Description:

All currently licensed influenza vaccines in the United States are produced in embryonated hen's eggs. There are several well-recognized disadvantages to the use of eggs as the substrate for influenza vaccine. Eggs require specialized manufacturing facilities and could be difficult to scale up rapidly in response to an emerging need such as a pandemic. It is usually necessary to adapt candidate vaccine viruses for high-yield growth in eggs, a process that can be time consuming, is not always successful, and can select receptor variants that may have suboptimal immunogenicity. In addition, agricultural diseases that affect chicken flocks, and that might be an important issue in a pandemic due to an avian influenza virus strain, could easily disrupt the supply of eggs for vaccine manufacturing. Therefore, development of alternative substrates for influenza vaccine production has been identified as a high-priority objective.

One potential alternative method for production of influenza vaccine is expression of the influenza virus hemagglutinin (HA) using recombinant DNA techniques. This alternative avoids dependence on eggs and is very efficient because of the high levels of protein expression under the control of the baculovirus polyhedrin promoter.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 407
• Est. completion date: August 2016
• Est. primary completion date: August 2016
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

1. Adults, regardless of gender, aged 18 years and above

2. Able to give written informed consent to participate.

3. Body temperature <100.0ºF.

4. The subject must be in reasonably good health as determined by targeted physical examination, when necessary, based on medical history.

5. Women of child-bearing potential (WOCBP) must have a negative urine pregnancy test within 24 hours preceding receipt of first and second vaccine doses.

6. Women are considered not of child-bearing potential if they are:

• Surgically sterile

• Menopausal, defined as no natural menses for =12 months

7. Comprehension of the study requirements, expressed availability for the required study period, and ability to attend scheduled visits and remote contacts.

Exclusion Criteria:

1. Persons who previously received an H5N1 or H7N9 influenza vaccine or who plan to receive an H5N1or H7N9 influenza vaccine while participating in the study.

2. Persons who plan to receive a seasonal influenza vaccine earlier than Day 42 of participation in this study, i.e. before the post-vaccination serology sample is obtained.

3. Persons with an acute or chronic medical condition that, in the opinion of the investigator, would render vaccination unsafe or would interfere with the evaluation of immune responses.

4. Persons taking medications or treatments that may adversely affect the immune system, e.g. cytotoxic agents, immunosuppressive doses of corticosteroids, anti-TNFa agents.

5. Persons with an active neoplastic disease (excluding non-melanoma skin cancer that was successfully treated) or a history of any hematological malignancy. For this criterion, "active" is defined as having received treatment within the past 5 years.

6. Persons with a history of documented autoimmune disease.

7. Women currently pregnant, nursing mothers or women planning a pregnancy between enrollment and 42 days after randomization.

8. Persons who have had a prior serious reaction to any influenza vaccine.

9. Persons with a known history of Guillain-Barré Syndrome (GBS).

10. Persons with a history of anaphylactic-type reaction to injected vaccines.

11. Persons with a history of illicit drug use or alcohol abuse that may compromise the subject's ability to comply with the protocol.

12. Persons who received a seasonal influenza vaccine < 6 months prior to enrollment (may delay enrollment).

13. Persons who received any licensed inactivated or recombinant (non-live) vaccine within 2 weeks prior to enrollment or any licensed live vaccine within 1 month prior to enrollment (may delay enrollment) (See separate exclusion criteria #1 and #12 for seasonal and H5N1 influenza vaccines.)

14. Persons who have had an acute illness or fever (>38º C or >100º F) within three days prior to study enrollment (enrollment may be delayed for full recovery, if acceptable to investigator).

15. Persons currently participating or planning to participate in a study that involves an experimental agent (vaccine, drug, biologic, device, or medication) or have received an experimental agent within 1 month prior to enrollment in this study, or who expect to receive another experimental agent during participation, or intend to donate blood during the 42-day primary study period.

16. Persons who received immunoglobulin or another blood product within the 3 months prior to enrollment in this study. Persons who expect to receive immunoglobulin or another blood product during the 42-day primary period of this study.

Related Conditions & MeSH terms

• Influenza

Intervention

Biological:
• Panblok
Intramuscular injection
• rHA adjuvant
Intramuscular injection

Locations

Country	Name	City	State
United States	Benchmark Reseach	Austin	Texas
United States	Rapid Medical Research, Inc.	Cleveland	Ohio
United States	Avail Clinical Research	DeLand	Florida
United States	Regional Clinical Research, Inc.	Endwell	New York
United States	Benchmark Research - Fort Worth	Fort Worth	Texas
United States	Coastal Clinical Research	Mobile	Alabama
United States	Meridian Clinical Research	Omaha	Nebraska
United States	Jean Brown Research	Salt Lake City	Utah
United States	Meridian Clinical Research	Savannah	Georgia

Sponsors (1)

Lead Sponsor	Collaborator
Protein Sciences Corporation

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Demonstrate That the Immunogenicity of Adjuvanted Panblok H7 rHA is Sufficient to Support Emergency Use Authorization in the Event of a Declared Pandemic.	The primary endpoint will be "seroprotection rate" to the selected dose of adjuvanted H7 rHA, defined by a post-vaccination HAI titer =40 on Day 42. The definition of success will be a lower bound of the two-sided 95% CI = 70% for adults <65 and =60% for adults =65 years of age.	42 Days
Secondary	Reactogenicity Immediately After Each Injection, Extending to Day 7	Solicited events of local and systemic reactogenicity Days 0-7	7 Days
Secondary	Long-term Safety Assessed by Incidence of SAEs, NOCIs. AESs Over 12 Months Following Vaccination		13 months
Secondary	Unsolicited Adverse Events (UAEs) During Days 0-42 Following the First Administration of Study Vaccine	Unsolicited adverse events (UAEs) Days 0-42.	42 Days