- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01244867
Immunogenicity, Safety, Tolerability of a Plant-Made H5 VLP Influenza Vaccine
July 30, 2012 updated by: Medicago
A Phase 2, Randomized, Observer-blind, Single Center, Dose-Ranging Study to Evaluate the Immunogenicity Safety and Tolerability of the H5 VLP Influenza Vaccine With or Without Alhydrogel in Healthy Adults 18-60 Years of Age.
The primary objective is to assess the immunogenicity and safety and tolerability of two consecutive doses of H5 VLP Influenza vaccine given 21 days apart, at three dose levels: in part A: 20 µg, 30 µg and 45 µg combined with Alhydrogel® 1%, or 45 µg without Alhydrogel®, compared to the placebo, (100mM phosphate buffer + 150mM NaCl + 0.01% Tween 80).
Study Overview
Status
Completed
Conditions
Detailed Description
An adaptive design is proposed for this phase 2 trial.
Part A of this study will consist of dose-ranging in 135 subjects who will be randomized to receive one injection of either 20 µg, 30 µg or 45 µg H5 VLP Influenza vaccine combined with Alhydrogel®, or 45 µg without Alhydrogel®, or the placebo preparation, (100mM phosphate buffer + 150mM NaCl + 0.01% Tween 80) at Days 0 and 21.
Seven-day (7) safety data after the first immunization for subjects in all five treatment groups will be tabulated and reviewed by a panel consisting of 2 external medical advisors, prior to permitting the second immunization of vaccine/placebo for all treatment groups at Day 21 (Part A).
Twenty-one (21) days after the last subject vaccine administration in Part A, all safety and immunogenicity data will be collected and analysed to determine the optimal dose level.
Following selection of the optimal dose, Part B of the trial will commence and consist of administration of the selected optimal dose(s) in one hundred (100) subjects, plus administration of placebo in twenty (20) subjects (total of 120 subjects in part B).
These subjects will similarly receive two vaccinations 21 days apart and will be followed in the exact same fashion as Part A, except that there will be no 7-day safety analysis.
Depending on data analysis one or a maximum of two vaccine doses could be selected to be further evaluated during part B of the trial.
All Part A and B subjects will be followed for safety until Day 228.
Study Type
Interventional
Enrollment (Actual)
255
Phase
- Phase 2
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
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Ontario
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Toronto, Ontario, Canada, M5V 2T3
- Kendle Early Stage
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-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 60 years (Adult)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Male and female adults, 18 to 60 years of age;
- Healthy as judged by the Principal Investigator (PI) and determined by medical history, physical examination, vital signs, screening laboratories and medical history conducted no more than 30 days prior to study vaccine administration;
- BMI of ≥18 and ≤ 32;
- Comprehension of the study requirements, expressed availability for the required study period and ability to attend scheduled visits;
- Accessible by telephone on a consistent basis;
- In the opinion of the Investigator, competence and willingness to provide written, informed consent for participation after reading the informed consent form. The subject must have adequate opportunity to discuss the study with an Investigator or qualified designee;
- If female and capable of child-bearing, have a negative serum pregnancy test result at study entry, has been consistently using effective birth control for the 28 days prior to study entry and agree to continue employing adequate birth control measures for the duration of the study.
Exclusion Criteria:
Presence of significant acute or chronic, uncontrolled medical or neuropsychiatric illness. "Uncontrolled" is defined as:
- Requiring a new medical or surgical treatment within one month prior to study vaccine administration;
- Requiring a change in medication dosage in one month prior to test article administration due to uncontrolled symptoms or drug toxicity (elective dosage adjustments in stable subjects are acceptable), or
- Hospitalization or an event fulfilling the definition of a serious adverse event within one month prior to test article administration;
- Any medical or neuropsychiatric condition which, in the Investigator's opinion, would render the subject incompetent to provide informed consent or unable to provide valid safety observations and reporting;
- Any confirmed or suspected immunosuppressive condition or immunodeficiency including history of human immunodeficiency virus (HIV) infection or Hepatitis B or C or presence of lymphoproliferative disease;
- Presence of any febrile illness, oral temperature of >38.0˚C within 24 hours of test article administration. Such subjects may be re-evaluated for enrolment after resolution of illness;
- History of autoimmune disease;
- Administration of any vaccine (including any other influenza vaccine) within a 30 day period prior to study enrolment, or planned administration within the period from the first vaccination up to blood sampling at Day 42 or within 30 days prior to blood sampling at Day 228. Immunization on an emergency basis of a tetanus and diphtheria toxoids adsorbed for adult use (Td) will be allowed provided the vaccine is not administered within two weeks prior to test article administration. Receipt of any other emergency immunizations (e.g. rabies) will result in a case-by-case review of continued participation;
- Use of any investigational or non-registered product within 30 days prior to study enrolment or planned use during the study period. Subjects may not participate in any other drug study while participating in this study;
- Treatment with systemic glucocorticoids at a dose exceeding ≥ 10 mg of prednisone per day, or equivalent for more than 7 consecutive days or for 10 or more days in total, within one month of first test article administration, or any other cytotoxic or immunosuppressant drug or any immune globulin preparation within three months of vaccination. Nasal or inhaled glucocorticoids are allowed;
- Any significant disorder of coagulation or treatment with Coumadin derivatives or heparin. Persons receiving prophylactic anti-platelet medications, e.g., low-dose aspirin, and without a clinically apparent bleeding tendency are eligible;
- History of previous H5N1 vaccination or a history of exposure to H5N1 virus;
- History of allergy to any of the constituents of H5 VLP (H5N1) study vaccine, Alhydrogel® (aluminum hydroxide), or the phosphate buffer;
- History of severe allergic reactions or anaphylaxis;
- History of tobacco allergy;
- History of anti-histaminics used continuously for 4 weeks or more at any time in the past year;
- Have a rash, dermatological condition or tattoos which may interfere with injection site reaction rating;
- Have received a blood transfusion or immunoglobulins within 90 days of study entry;
- If female, and of childbearing potential, has not been consistently using effective birth control for the 28 days prior to study entry. An example of highly effective birth control is oral contraceptives, hormone implants, abstinence (confirmed by Investigator), or male condom plus spermicide. All female subjects, regardless of birth control history must provide a serum sample for pregnancy screening. Effective birth control must be used for the duration of the study for female of child bearing potential must have no plan to become pregnant during the study period.;
- Among female subjects, either known pregnancy or urine beta-human chorionic gonadotropin (ß-hCG) test results consistent with pregnancy prior to test article administration on Day 0;
- Female subjects who are lactating;
- Vital sign abnormalities: systolic blood pressure ≥150 mmHg, diastolic blood pressure ≥90 mmHg, resting pulse rate <40 bpm or >100 bpm or according to the Investigator's opinion;
- Cancer or treatment for cancer within 3 years of test article administration. Persons with a history of cancer who are disease-free without treatment for 3 years or more are eligible. Persons with treated and uncomplicated basal cell carcinoma of the skin are eligible.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Placebo Comparator: Placebo
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2 doses given 21 days apart of the placebo
|
Experimental: 20 microgram H5 VLP vaccine + Alhydrogel
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2 doses given 21 days apart of 20 micrograms of H5 VLP vaccine mixed with Alhydrogel
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Experimental: 30 micrograms H5 VLP vaccine + Alhydrogel
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2 doses given 21 days apart of 30 micrograms of H5 VLP vaccine mixed with Alhydrogel
|
Experimental: 45 micrograms H5 VLP vaccine + Alhydrogel
|
2 doses given 21 days apart of 45 micrograms of H5 VLP vaccine mixed with Alhydrogel
|
Experimental: 45 micrograms H5 VLP vaccine
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2 doses given 21 days apart of 45 micrograms of H5 VLP vaccine
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Immunogenicity
Time Frame: 21 days after each injection and 6-month follow-up period
|
Immunogenicity Geometric mean titres: (GMTs) of hemagglutination inhibition (HI) antibody on Days 0, 21 and 42.
Follow-up serology samples for GMTs will be taken at Day 228.
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21 days after each injection and 6-month follow-up period
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Safety
Time Frame: 21 days after each vaccination and 6-month follow-up
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Safety will be assessed by the rate and severity of solicited and unsolicited adverse events post-vaccination.
A 6-month follow-up period will be performed.
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21 days after each vaccination and 6-month follow-up
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Immunogenicity
Time Frame: 21 dyas after each injection
|
The secondary objective is to assess the cross-reactivity of antibodies induced by two consecutive doses of H5 VLP influenza vaccine given 21 days apart, at three dose levels: 20 µg, 30 µg and 45 µg combined with Alhydrogel® 1%, or 45 µg without Alhydrogel® 1% as measured by HI antibody titers for the A/Vietnam/1203/04, A/Anhui/01/2005 and A/turkey/Turkey/1/05 H5N1 strains and as measured by MicroNeutralisation(MN) antibody titers for the A/Indonesia/5/05 and A/Vietnam/1203/04 H5N1 strains.
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21 dyas after each injection
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Investigators
- Principal Investigator: Edward M. Sellers, MD, Kendle Early Stage Toronto Canada
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
November 1, 2010
Primary Completion (Actual)
July 1, 2011
Study Completion (Actual)
September 1, 2011
Study Registration Dates
First Submitted
November 15, 2010
First Submitted That Met QC Criteria
November 18, 2010
First Posted (Estimate)
November 19, 2010
Study Record Updates
Last Update Posted (Estimate)
July 31, 2012
Last Update Submitted That Met QC Criteria
July 30, 2012
Last Verified
July 1, 2012
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- CP-H5VLP-002
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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