- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00712634
Cytomegalovirus Vaccine in Healthy Participants
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.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
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.
Study Type
Enrollment (Anticipated)
Phase
- Phase 1
Contacts and Locations
Study Locations
-
-
California
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Duarte, California, United States, 91010-3000
- City of Hope Comprehensive Cancer Center
-
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
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
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: 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.
|
Vaccine received on either days 0 and 28 or on days 0, 28, and 56 and perhaps day 90
|
Experimental: 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.
|
Vaccine received on either days 0 and 28 or on days 0, 28, and 56 and perhaps day 90
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
---|
Safety and toxicity
|
Immunologic response
|
Duration of immunologic response
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Don Diamond, PhD, City of Hope Comprehensive Cancer Center
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- CDR0000599675
- P01CA030206 (U.S. NIH Grant/Contract)
- CHNMC-97092
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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