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Cytomegalovirus Vaccine in Healthy Participants

18. december 2009 opdateret af: City of Hope Medical Center

A Phase I Dose Escalation Study of Lipopeptide Vaccines With Activity Against Human Cytomegalovirus

RATIONALE: Vaccines may help the body build an effective immune response against cytomegalovirus.

PURPOSE: This randomized phase I trial is studying the side effects and best dose of cytomegalovirus vaccine in healthy participants.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

OBJECTIVES:

  • To establish whether 4 dose levels of the CMVpp65-A*0201 peptide vaccine are safe and well tolerated in cytomegalovirus (CMV)-seropositive participants.
  • To determine whether the CMVpp65-A*0201 peptide vaccine, when given as a single injection followed by one booster injection at a safe and well-tolerated dose, is capable of stimulating a memory response in CMV-seropositive participants.
  • To evaluate whether CMV-seronegative participants generate a de novo immune response against CMV after immunization with CMVpp65-A*0201 peptide vaccine given as a single injection followed by three booster injections.
  • To determine the duration of immune enhancement of CMV-specific cytotoxic T-lymphocyte function as assessed for up to 12 months after primary or secondary immunization with the CMVpp65-A*0201 peptide vaccine.

OUTLINE: This is a dose-escalation study of CMVpp65-A*0201 peptide vaccine in cytomegalovirus (CMV)-seropositive participants. Once a safe dose is established, CMV-seronegative participants are accrued and immunized at that dose. Participants are stratified according to gender.

  • CMV-seropositive participants: Participants are randomized to receive 1 of 4 escalating doses of CMVpp65-A*0201 peptide vaccine containing either helper T-lymphocyte (HTL) PADRE peptide or HTL tetanus toxoid peptide. Within each vaccine dose group, two participants are randomized to receive a placebo. Participants receive the vaccine or a placebo subcutaneously (SC) on days 0 and 28 in the absence of unacceptable toxicity.
  • CMV-seronegative participants: Participants are randomized to receive 1 of 4 established doses (established in CMV-seropositive participants) of CMVpp65-A*0201 peptide vaccine containing either HTL PADRE peptide or HTL tetanus toxoid peptide. Participants receive the vaccine on days 0, 28, and 56 in the absence of unacceptable toxicity. Participants with a partial or low-level immune response receive one additional booster vaccine on day 90.

Participants undergo blood sample collection at baseline and periodically during study for immunologic laboratory studies. Participants also undergo skin biopsy at baseline. Laboratory studies include assessment of human cytotoxic T-lymphocyte activity and response by ^51chromium-release assay, limiting-dilution analysis, and T-cell proliferation assay; and CD4/CD8 phenotyping by FACScan® flow cytometry.

After completion of study therapy, participants are followed for 12 months.

Undersøgelsestype

Interventionel

Tilmelding (Forventet)

46

Fase

  • Fase 1

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Forenede Stater
    • California
      • Duarte, California, Forenede Stater, 91010-3000
        • City of Hope Comprehensive Cancer Center

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 65 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

DISEASE CHARACTERISTICS:

  • Healthy participant
  • Cytomegalovirus seropositive or seronegative
  • HLA-A*0201-positive

PATIENT CHARACTERISTICS:

  • CBC within 1.5 times normal
  • SMA-18 within 1.5 times normal
  • Hepatitis B virus antigen seronegative
  • Hepatitis C virus seronegative
  • No diagnosis that is associated with immunodeficiency, including HIV infection
  • No serious abnormalities by EKG (in participants ≥ 50 years of age)
  • Not pregnant

PRIOR CONCURRENT THERAPY:

  • More than 6 months since prior surgery

  • No concurrent daily medications for chronic or current illness, except for the following:

    • Thyroid replacement therapy
    • Estrogen replacement therapy
    • Dietary vitamins and protein supplements
    • Antihistamine medication
    • Anticholesterol medication
    • Cardiac and antihypertensive medication
    • Any medication, as determined by the principal investigator, that is not known or likely to be immunosuppressive

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: CMV-seropositive participants
Participants are randomized to receive 1 of 4 escalating doses of CMVpp65-A*0201 peptide vaccine containing either helper T-lymphocyte (HTL) PADRE peptide or HTL tetanus toxoid peptide. Within each vaccine dose group, two participants are randomized to receive a placebo. Participants receive the vaccine or a placebo subcutaneously (SC) on days 0 and 28 in the absence of unacceptable toxicity.
Biologisk: CMVpp65-A*0201 peptide vaccine
Vaccine received on either days 0 and 28 or on days 0, 28, and 56 and perhaps day 90
Eksperimentel: CMV-seronegative participants
Participants are randomized to receive 1 of 4 established doses (established in CMV-seropositive participants) of CMVpp65-A*0201 peptide vaccine containing either HTL PADRE peptide or HTL tetanus toxoid peptide. Participants receive the vaccine on days 0, 28, and 56 in the absence of unacceptable toxicity. Participants with a partial or low-level immune response receive one additional booster vaccine on day 90.
Biologisk: CMVpp65-A*0201 peptide vaccine
Vaccine received on either days 0 and 28 or on days 0, 28, and 56 and perhaps day 90

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Sikkerhed og toksicitet
Immunologisk respons
Duration of immunologic response

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

City of Hope Medical Center

Samarbejdspartnere

National Cancer Institute (NCI)

Efterforskere

  • Ledende efterforsker: Don Diamond, PhD, City of Hope Comprehensive Cancer Center

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. november 1997

Primær færdiggørelse (Faktiske)

1. april 2009

Studieafslutning (Faktiske)

1. april 2009

Datoer for studieregistrering

Først indsendt

9. juli 2008

Først indsendt, der opfyldte QC-kriterier

9. juli 2008

Først opslået (Skøn)

10. juli 2008

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

21. december 2009

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

18. december 2009

Sidst verificeret

1. december 2009

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • CDR0000599675
  • P01CA030206 (U.S. NIH-bevilling/kontrakt)
  • CHNMC-97092

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med CMVpp65-A*0201 peptide vaccine

Søg i lignende forsøg

Sponsorer og samarbejdspartnere

Medicinske tilstande

Narkotikainterventioner

CROs by country

CROs in Belgium

Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

3
Abonner