Safety and Immune Response to Two Doses of rDEN2/4delta30 Dengue Vaccine
31 december 2012 uppdaterad av: National Institute of Allergy and Infectious Diseases (NIAID)
Safety and Immunogenicity of a 2-Dose Regimen of rDEN2/4Δ30 Dengue Vaccine With Boosting at 4 Versus 6 Months
Dengue fever, caused by dengue viruses, is a major health problem in the tropical and subtropical regions of the world.
The purpose of this study is to test the safety of and immune response to a new dengue virus vaccine in healthy adults.
Studieöversikt
Status
Avslutad
Betingelser
Intervention / Behandling
Detaljerad beskrivning
Dengue viruses, which cause dengue fever and dengue shock syndrome, are a major cause of morbidity and mortality in several of the world's tropical and subtropical regions. The rDEN2/4delta30(ME) vaccine is a live attenuated dengue virus vaccine that may be protective against dengue virus serotype 2 (DEN2). The purpose of this study is to evaluate the safety and immunogenicity of the rDEN2/4delta30(ME) vaccine in healthy adults.
This study will last approximately 5 to 7 months with 25 study visits. Participants will be randomly assigned into one of two cohorts. Participants in Cohort 1 will receive an injection of rDEN2/4delta30(ME) or placebo vaccine at Days 0 and 180. Participants in Cohort 2 will receive an injection of rDEN2/4delta30(ME) or placebo vaccine at Days 0 and 120. Participants will be asked to record their temperature in a diary for 16 days after each vaccination. At each study visit a physical examination, symptom history, and blood and urine collection will occur.
Studietyp
Interventionell
Inskrivning (Faktisk)
25
Fas
- Fas 1
Kontakter och platser
Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.
Studieorter
-
-
Maryland
-
Baltimore, Maryland, Förenta staterna, 21205
- Center for Immunization Research
-
-
Deltagandekriterier
Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.
Urvalskriterier
Åldrar som är berättigade till studier
18 år till 50 år (Vuxen)
Tar emot friska volontärer
Nej
Kön som är behöriga för studier
Allt
Beskrivning
Inclusion Criteria:
- Good general health as determined by means of the screening procedures.
- Available for the duration of the study (32 weeks for cohort 1 and 23 weeks for cohort 2)
- Willing to use effective methods of contraception
Exclusion Criteria:
- Evidence of clinically significant neurologic, cardiac, pulmonary, hepatic, rheumatologic, autoimmune, or renal disease by history, physical examination, and/or laboratory studies
- Behavioral, cognitive, or psychiatric disease that in the opinion of the investigator will affect the ability of the volunteer to understand and cooperate with the requirements of the study protocol
- Neutropenia as defined by an ANC ≤1500/mm3
- ALT level above the laboratory-defined upper limit of normal
- Serum creatinine level above the laboratory-defined upper limit of normal
- Any other condition that, in the opinion of the investigator, would jeopardize the safety or rights of a volunteer participating in the trial or would render the subject unable to comply with the protocol.
- Medical, occupational, or family problems as a result of alcohol or illicit drug use during the past 12 months
- History of a severe allergic reaction or anaphylaxis
- Severe asthma (emergency room visit or hospitalization within the last 6 months)
- Positive HIV-1 serology by screening and confirmatory assays
- Positive for hepatitis C virus (HCV) by screening and confirmatory assays
- Positive hepatitis B surface antigen (HBsAg) by enzyme-linked immunosorbent assay (ELISA)
- Known immunodeficiency syndrome
- Use of corticosteroids (excluding topical or nasal) or immunosuppressive drugs within 30 days of starting this study
- Receipt of a live vaccine within the 4 weeks or a killed vaccine within the 2 weeks prior to entry into the study
- Has had spleen surgically removed
- Receipt of blood products within the 6 months prior to study entry
- History or serologic evidence of previous dengue virus infection or other flavivirus infection (e.g. yellow fever virus, St. Louis encephalitis, West Nile virus).
- Previous receipt of yellow fever or dengue vaccine (licensed or experimental)
- Persons who have received any investigational agent in the 30 days prior to study entry
- Persons who have definite plans to travel to a dengue endemic area during the study
Studieplan
Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Förebyggande
- Tilldelning: Randomiserad
- Interventionsmodell: Parallellt uppdrag
- Maskning: Dubbel
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
|
Aktiv komparator: 1
Participants will receive 1 injection of rDEN2/4delta30(ME) or placebo vaccine on Days 0 and 180
|
10^3 PFU dose
placebo for rDEN2/4delta30(ME) vaccine
|
|
Aktiv komparator: 2
Participants will receive 1 injection of rDEN2/4delta30(ME) or placebo vaccine on Days 0 and 120
|
10^3 PFU dose
placebo for rDEN2/4delta30(ME) vaccine
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Tidsram |
|---|---|
|
Determine the frequency of vaccine related AEs for each dose, graded by severity.
Tidsram: Throughout study
|
Throughout study
|
|
Compare the immunogenicity of the two 2-dose regimens of the rDEN2/4Δ30(ME) candidate vaccine as assessed by neutralizing antibody titers to DEN2
Tidsram: At 4 and 6 weeks after each vaccination
|
At 4 and 6 weeks after each vaccination
|
Sekundära resultatmått
Resultatmått |
Tidsram |
|---|---|
|
Assess the frequency, quantity, and duration of viremia after each dose of vaccine.
Tidsram: Throughout study
|
Throughout study
|
|
Determine the number of vaccinees infected with rDEN2/4Δ30(ME)
Tidsram: Throughout study
|
Throughout study
|
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Comparison of infectivity rates, safety, and immunogenicity between dose 1 and dose 2 withhin cohort and between cohorts
Tidsram: Throughout study
|
Throughout study
|
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Evaluation of the phenotype and activation of peripheral blood mononuclear cells at primary infection and upon reinfection with the DEN2/4Δ30(ME) vaccine.
Tidsram: Throughout study
|
Throughout study
|
Samarbetspartners och utredare
Det är här du hittar personer och organisationer som är involverade i denna studie.
Utredare
- Huvudutredare: Anna Durbin, MD, Johns Hopkins Bloomberg School of Public Health
Publikationer och användbara länkar
Den som ansvarar för att lägga in information om studien tillhandahåller frivilligt dessa publikationer. Dessa kan handla om allt som har med studien att göra.
Studieavstämningsdatum
Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.
Studera stora datum
Studiestart
1 januari 2009
Primärt slutförande (Faktisk)
1 januari 2010
Avslutad studie (Faktisk)
1 januari 2010
Studieregistreringsdatum
Först inskickad
11 juni 2009
Först inskickad som uppfyllde QC-kriterierna
11 juni 2009
Första postat (Uppskatta)
15 juni 2009
Uppdateringar av studier
Senaste uppdatering publicerad (Uppskatta)
3 januari 2013
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
31 december 2012
Senast verifierad
1 december 2012
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- CIR 250
Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .