- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04142983
Tdap Vaccine Safety for Plasma Donors
November 14, 2022 updated by: GCAM Inc.
A Clinical Study of the Safety and Antibody Responses of Plasma Donors Vaccinated With a Licensed Tdap Vaccine
This is a prospective, open label, single-arm, multi-center, Phase 1 study measuring the safety and tetanus antibody responses to Tdap vaccine administered to plasma donors every 3 months ±1 week for 12 months (5 vaccinations) with a 6 month follow-up after the last vaccination.
After obtaining informed consent and screening for eligibility including plasmapheresis donor eligibility, subjects will have other baseline assessments performed and if eligible, will receive the scheduled vaccinations, will be assessed for adverse events (AEs) and have plasma samples collected for antibody titers each month thereafter for 11 months, and then at 1 and 6 months after the last vaccination.
As these subjects are participating in a standard donor plasmapheresis donor program, assessments for donor eligibility and routine plasmapheresis will be performed; however, only the data specifically required to meet the objectives of this study will be collected.
Study Overview
Study Type
Interventional
Enrollment (Actual)
110
Phase
- Phase 2
- Phase 3
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
Texas
-
Eagle Pass, Texas, United States, 78852
- GCAM Eagle Pass Center
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Laredo, Texas, United States, 78040
- GCAM Laredo Center
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 63 years (Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Male or female ages 18 to 63 years
- Females of childbearing potential who agree to employ adequate birth control measures during the study
- Signed the informed consent form (ICF)
- Met all of the criteria required by GCAM to be a Normal Source Plasma donor
- Subject is not participating in any other immunization program
Exclusion Criteria:
- Subject is pregnant
- Subject has a condition or abnormality that in the opinion of the Investigator would compromise the safety of the subject or the quality of the data
- Subject has repeated reactions or hypersensitivity to components in the vaccine (e.g., thimerosal, latex, etc.)
- Subject has history of a severe reaction to any immunization
- Subject has a history of Guillain-Barré Syndrome
- The Investigator concludes that the anticipated vaccination site (deltoid area) is not suitable for AE assessment
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Study Group
Participants will receive a single dose of Tdap vaccine (Adacel) every 3 months for a total of 5 immunizations over a period of 12 months.
|
0.5 mL, Intramuscular
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number of Participants With Treatment Emergent Adverse Events (TEAEs)
Time Frame: Up to 18 months
|
An adverse event (AE) is any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship.
TEAEs are defined as an adverse event occurring after first study treatment.
A serious TEAE was defined as an AE that resulted in any of the following outcomes: death; life-threatening; inpatient hospitalization or prolongation of hospitalization; persistent or significant incapacity or substantial disruption of the ability to conduct normal life functions, an important medical event that based on appropriate medical judgment may jeopardize the subject and may require medical or surgical intervention to prevent one of the aforementioned outcomes.
|
Up to 18 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Anti-tetanus Antibody Titers in Participants Over Time
Time Frame: Baseline, Month 1, Month 2, Month 3, Month 4, Month 5, Month 6, Month 7, Month 8, Month 9, Month 10, Month 11, Month 12, Month 13, Month 18
|
Anti-tetanus antibody titer levels after each vaccination presented at geometric means (GeoMean) over time.
|
Baseline, Month 1, Month 2, Month 3, Month 4, Month 5, Month 6, Month 7, Month 8, Month 9, Month 10, Month 11, Month 12, Month 13, Month 18
|
Number of Participants With Post Vaccination Anti-tetanus Antibody Range Levels
Time Frame: Baseline, Month 1, Month 2, Month 3, Month 4, Month 5, Month 6, Month 7, Month 8, Month 9, Month 10, Month 11, Month 12, Month 13, Month 18
|
The numbers and percentages of participants whose post vaccination antibody levels were <5 IU/mL; ≥5 IU/mL to 10 IU/mL; >10 IU/mL to 15 IU/mL; and, >15 IU/mL after each vaccination.
|
Baseline, Month 1, Month 2, Month 3, Month 4, Month 5, Month 6, Month 7, Month 8, Month 9, Month 10, Month 11, Month 12, Month 13, Month 18
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
February 3, 2020
Primary Completion (Actual)
November 3, 2021
Study Completion (Actual)
November 16, 2021
Study Registration Dates
First Submitted
October 25, 2019
First Submitted That Met QC Criteria
October 25, 2019
First Posted (Actual)
October 29, 2019
Study Record Updates
Last Update Posted (Estimate)
December 6, 2022
Last Update Submitted That Met QC Criteria
November 14, 2022
Last Verified
November 1, 2022
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- GCAM-TET-01
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
No
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Yes
Studies a U.S. FDA-regulated device product
No
product manufactured in and exported from the U.S.
No
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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