A Phase 1/2, Randomized, Observer-blind Study of Varying Injection Schedules of a Tetravalent Dengue Virus Purified Inactivated Vaccine (TDENV-PIV) With AS03B Adjuvant and Placebo in Healthy Adults in the US
Overview
- Phase
- Phase 1
- Intervention
- Not specified
- Conditions
- Dengue
- Sponsor
- U.S. Army Medical Research and Development Command
- Enrollment
- 140
- Locations
- 2
- Primary Endpoint
- Number of unsolicited adverse events related to product
- Status
- Completed
- Last Updated
- 6 years ago
Overview
Brief Summary
This study is being conducted to evaluate the safety and immunogenicity and antibody persistence of the candidate dengue vaccine.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Subjects must be able to provide written informed consent.
- •Subjects must be healthy as established by medical history and clinical examination at study entry
- •Subjects who the investigator believes can and will comply with the requirements of the protocol (e.g., completion of the diary cards, return for follow-up visits, etc.)
- •Subjects at WRAIR CTC must be able to pass Department of Defense (DoD) base entry requirements, including the possession of a valid government issued ID card.
- •Male or non-pregnant, non-breastfeeding female between 20 and 49 years of age (inclusive) at the time of consent
- •Female subjects of non-childbearing potential (non-childbearing potential is defined as having had one of the following: a tubal ligation at least 3 months prior to enrollment, a hysterectomy, an ovariectomy, or is post-menopausal).
- •Female subjects of childbearing potential may be enrolled in the study, if all of the following apply:
- •Practiced adequate contraception (see Definition of Terms, section 5) for 30 days prior to vaccination
- •Has a negative urine pregnancy test on the day of vaccination
- •Agrees to continue adequate contraception until two months after completion of the vaccination series.
Exclusion Criteria
- •Use of any investigational or non-registered product (drug or vaccine) other than the study vaccines/placebo during the period starting 30 days preceding the first dose of study vaccine/placebo and/or planned use during the study period
- •Chronic administration (defined as more than 14 days in total) of immunosuppressants or other immune-modifying drugs during the period starting 90 days prior to the first vaccine/placebo dose (for corticosteroids, this will mean prednisone \>=5mg/day or equivalent; inhaled, intranasal and topical steroids are allowed)
- •Planned administration or administration of a vaccine/product not planned in the study protocol during the period starting 30 days prior to the first dose of vaccine/placebo until 30 days after the last dose of study vaccine/placebo (routine influenza vaccination will be allowed as long as it is not administered within 14 days of the vaccine/placebo, and will not lead to study exclusion although it should be reported to the PI)
- •History of dengue infection or dengue illness, or history of flavivirus vaccination (e.g., yellow fever, tick-borne-encephalitis virus \[TBEV\], Japanese encephalitis, and dengue)
- •Planned administration of any flavivirus vaccine for the entire study duration
- •Concurrently participating in another clinical study, at any time during the study period, in which the subject has been or will be exposed to an investigational or a non-investigational product (pharmaceutical product or device)
- •Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination (no laboratory testing required)
- •Family history of congenital or hereditary immunodeficiency
- •Autoimmune disease or history of autoimmune disease
- •History of any reaction or hypersensitivity likely to be exacerbated by any component of the study vaccine/placebo or related to a study procedure
Outcomes
Primary Outcomes
Number of unsolicited adverse events related to product
Time Frame: 28-day follow-up period after each dose
Intensity of unsolicited adverse events related to product
Time Frame: 28-day follow-up period after each dose
Number of solicited local adverse events related to product
Time Frame: 7-day follow-up period after each dose
Number of Grade 3 laboratory abnormalities
Time Frame: 7-day follow-up period after each dose
Neutralizing antibody titers to each DENV type
Time Frame: Day 0 and 28 days after the second and third doses of TDENV-PIV
Intensity of solicited general adverse events related to product
Time Frame: 7-day follow-up period after each dose
Intensity of solicited local adverse events related to product
Time Frame: 7-day follow-up period after each dose
Number of potential immune-mediated diseases from Day 0 through 28 days after the last dose
Time Frame: 7 months after first dose
Number of medically attended AEs related to product
Time Frame: Day 0 through 28 days after the last dose
Number of Grade 2 laboratory abnormalities
Time Frame: 7-day follow-up period after each dose
Number of serious adverse events from day 0 through 28 days after the last dose
Time Frame: 7 months after first dose
Number of general adverse events related to product
Time Frame: 7-day follow-up period after each dose
Secondary Outcomes
- Number of serious adverse events related to product(7 months after first dose to the end of study)
- Seropositivity status for each DENV type(12 months after the last dose of active vaccine for all groups)
- Neutralizing antibody titers to each DENV type(12 months after the last dose of active vaccine)
- Number of medically attended AEs from post Month 7 to Study End(7 months after first dose to the end of study)
- Number of potential immune-mediated diseases from post Month 7 to Study End(7 months after first dose to the end of study)
- Seropositivity status for each DENV type for the TDENV-PIV (0-1-6) group(56 days after the third dose of active vaccine)
- Neutralizing antibody titers to each DENV type for the TDENV-PIV (0-1-6) group(56 days after the third dose of active vaccine)