Study of a Dengue Vaccine (V180) in Healthy Adults (V180-001)

A Phase I Randomized, Double-Blind, Placebo-Controlled, Dose-Escalation Study to Evaluate the Safety, Tolerability, and Immunogenicity of a Tetravalent Recombinant Subunit Dengue Vaccine (V180) in Healthy Adults

This study will determine whether at least one formulation of an experimental dengue vaccine (V180) is safe and causes an immune response.

Selected Inclusion Criteria:

• In good health
• Voluntarily agrees to participate by giving written informed consent
• Able to read, understand, and complete study questionnaires
• Able to complete all scheduled visits and comply with study procedures
• Access to a telephone
• Agrees to avoid unusual, vigorous exercise from 72 hours before any dose of study vaccine/placebo through 15 days after that dose
• Weighs ≥110 pounds (50 kg) and has a body mass index (BMI) of 19 to 32 kg/m^2
• No fever (temperature ≥100.4°F/38.0°C) for 72 hours prior to vaccination
• Females of reproductive potential agree to remain abstinent or to use 2 acceptable methods of birth control from enrollment through 6 weeks after the last dose of study vaccine/placebo

Selected Exclusion Criteria:

• History of receiving any flavivirus vaccine (e.g. Japanese encephalitis, tick-borne encephalitis, or yellow fever) or planned receipt of any such vaccine during the study period
• History of any flavivirus infection or serologic evidence of any flavivirus infection, including West Nile, dengue, yellow fever, Saint Louis encephalitis (if available), Kunjin, Murray Valley encephalitis, and Japanese encephalitis
• History of residence for a cumulative period of >1 year in a country where dengue, Japanese encephalitis virus, or yellow fever virus is common
• Planned travel to an area where dengue is common through 28 days after receiving the last dose of study vaccine/placebo
• Known hypersensitivity to any component of the dengue vaccine
• Abuse of drugs or alcohol within 12 months prior to screening
• Pregnant or breastfeeding, or expecting to conceive in the time from enrollment through 6 weeks after the last dose of study vaccine/placebo
• Positive serum test for human immunodeficiency virus (HIV), hepatitis B surface antigen (HBsAg), and/or hepatitis C antibody
• Known, suspected, or a history of immunocompromise
• History of malignancy within 5 years prior to enrollment
• Poorly controlled diabetes mellitus
• Use of any immunosuppressive therapy (except topical and inhaled/nebulized steroids)
• Receipt of any licensed non-live vaccine within 14 days prior to the first dose of study vaccine/placebo or plans to receive a licensed non-live vaccine during the time between receiving the first dose and 28 days after receiving the last dose of study vaccine/placebo
• Receipt of any licensed live vaccine within 30 days prior to the first dose of study vaccine/placebo or plans to receive a licensed live vaccine during the time between receiving the first dose and 28 after receiving the last dose of study vaccine/placebo
• Received investigational drugs or vaccines within 2 months prior to the first dose of study vaccine/placebo
• History of receiving 1 or more doses of an investigational dengue vaccine
• Participation in another clinical study within 42 days prior to enrollment, or plans to participate in another clinical study from enrollment through 1 year after the last dose of study vaccine/placebo
• Planned donation of eggs or sperm from the time of enrollment through 28 days after the last dose of study vaccine/placebo
• Prior receipt of a blood transfusion or blood products within 6 months prior to the first dose of study vaccine/placebo
• Hospitalization for acute illness within 3 months prior to the first dose of vaccine/placebo