Safety and Immune Response to Two Doses of rDEN2/4delta30 Dengue Vaccine
31. desember 2012 oppdatert 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.
Studieoversikt
Status
Fullført
Forhold
Intervensjon / Behandling
Detaljert beskrivelse
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.
Studietype
Intervensjonell
Registrering (Faktiske)
25
Fase
- Fase 1
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiesteder
-
-
Maryland
-
Baltimore, Maryland, Forente stater, 21205
- Center for Immunization Research
-
-
Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
18 år til 50 år (Voksen)
Tar imot friske frivillige
Nei
Kjønn som er kvalifisert for studier
Alle
Beskrivelse
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
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Forebygging
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Dobbelt
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / 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
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Determine the frequency of vaccine related AEs for each dose, graded by severity.
Tidsramme: 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
Tidsramme: At 4 and 6 weeks after each vaccination
|
At 4 and 6 weeks after each vaccination
|
Sekundære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Assess the frequency, quantity, and duration of viremia after each dose of vaccine.
Tidsramme: Throughout study
|
Throughout study
|
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Determine the number of vaccinees infected with rDEN2/4Δ30(ME)
Tidsramme: 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
Tidsramme: Throughout study
|
Throughout study
|
|
Evaluation of the phenotype and activation of peripheral blood mononuclear cells at primary infection and upon reinfection with the DEN2/4Δ30(ME) vaccine.
Tidsramme: Throughout study
|
Throughout study
|
Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Etterforskere
- Hovedetterforsker: Anna Durbin, MD, Johns Hopkins Bloomberg School of Public Health
Publikasjoner og nyttige lenker
Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart
1. januar 2009
Primær fullføring (Faktiske)
1. januar 2010
Studiet fullført (Faktiske)
1. januar 2010
Datoer for studieregistrering
Først innsendt
11. juni 2009
Først innsendt som oppfylte QC-kriteriene
11. juni 2009
Først lagt ut (Anslag)
15. juni 2009
Oppdateringer av studieposter
Sist oppdatering lagt ut (Anslag)
3. januar 2013
Siste oppdatering sendt inn som oppfylte QC-kriteriene
31. desember 2012
Sist bekreftet
1. desember 2012
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- CIR 250
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .