TetanusPhase 2/3NCT04142983
Tdap Vaccine Safety for Plasma Donors
A Phase 2/3 study testing Adacel in people with Tetanus, run by GCAM Inc. at 2 sites in United States.
Trial summary
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. Read more about this study
- Who is it for?
- Ages 18 to 63 yearsHealthy volunteers can take part
- Conditions the study is for
- Tetanus
- What is being tested?
- Adacel
- Type of treatment
- Vaccines, Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 110 participants
- Where
- 2 sitesUnited States
- Study dates
- 3 Feb 2020to 16 Nov 2021
- Phase
- Phase 2/3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 63 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- 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
Who cannot join
- 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
Trial locations and contacts
2 sites in 1 country.
United States2 sites
GCAM Eagle Pass Center
Eagle Pass, Texas, 78852
GCAM Laredo Center
Laredo, Texas, 78040
About this study
Official title: 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.
- Conditions
- Tetanus
- Being tested
- Adacel
- Medical subject headings
- Tetanus
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
AdacelBiological
Also called Tdap Vaccine
0.5 mL, Intramuscular
| Study group | Role | What they receive |
|---|---|---|
| Study Group | Experimental | 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. Receives: Biological: Adacel |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Participants With Treatment Emergent Adverse Events (TEAEs)
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.
Measured: Up to 18 months
Secondary outcomes (2)
Anti-tetanus Antibody Titers in Participants Over Time
Anti-tetanus antibody titer levels after each vaccination presented at geometric means (GeoMean) over time.
Measured: 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
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.
Measured: 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
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Oct 2019
- Study start3 Feb 2020
- Primary completion3 Nov 2021
- Study completion16 Nov 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for TetanusStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2/3
- Primary purpose
- Prevention
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 110 participants (actual)
Sponsor and investigators
- Lead sponsor
- GCAM Inc.
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04142983
- Sponsor's protocol ID
- GCAM-TET-01
- Status last verified
- Nov 2022
- First submitted
- 25 Oct 2019
- Last updated
- 6 Dec 2022
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 6 Dec 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Clinical Study of the Safety and Antibody Responses of Plasma Donors Vaccinated With a Licensed Tdap Vaccine
- ClinicalTrials.gov ID
- NCT04142983
- Acronym / sponsor ID
- GCAM-TET-01
- Conditions
- Tetanus
- Phase
- Phase 2/3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 110 participants (actual)
- Lead sponsor
- GCAM Inc.Industry (pharma, biotech, devices)
- Study start
- 3 Feb 2020 (actual)
- Primary completion
- 3 Nov 2021 (actual)
- Study completion
- 16 Nov 2021 (actual)
- First posted
- 29 Oct 2019 (actual)
- Results
- Posted 6 Dec 2022
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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 design
- Primary purpose
- Prevention
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Study Group | Experimental | Biological: AdacelParticipants will receive a single dose of Tdap vaccine (Adacel) every 3 months for a total of 5 immunizations over a period of 12 months. |
Who may qualify
- Ages
- 18 to 63 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (5 listed)
- 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
Key exclusion criteria (6 listed)
- 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
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| AdacelAlso: Tdap Vaccine0.5 mL, Intramuscular | Biological | Study Group |
Primary outcome
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.
2 secondary outcomes
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
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
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 Dec 2022.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: No
Related trials for Tetanus
RecruitingPhase 1
Lm-LLO-TT and Gemcitabine in Unresectable Pancreatic Ductal Adenocarcinoma
Pancreas Cancer, Duct Cell Adenocarcinoma, Pancreatic Cancer
RecruitingPhase 2
A Phase II Clinical Trial of Absorbed Acellular Pertussis (Two-Component) Diphtheria-Tetanus Combined Vaccine (For Adults and Adolescents)
Pertussis (Whooping Cough), Diphtheria
RecruitingPhase 1/2
A Phase I/II Clinical Trial of the Diphtheria, Tetanus, Acellular Component Pertussis and Sabin Inactivated Poliomyelitis Vaccine Adsorbed
Diphtheria, Pertussis
RecruitingPhase 4
Concurrent Versus Sequential Administration of Tdap and RSV Vaccines in Pregnancy
RSV, Tdap - Tetanus, Diphtheria and Acellular Pertussis Vaccination
Not yet recruitingPhase 1/2
Safety and Immunogenicity of a Combined Diphtheria, Tetanus, Whole Cell Pertussis, Hepatitis B, Recombinant Poliomyelitis and Haemophilus Influenzae Type b (Hib) Vaccine (SIIPL DTwP-HepB-rPV-Hib)
Diptheria Immunization, Tetanus Immunization
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2/3 study testing Adacel in people with Tetanus, run by GCAM Inc. at 2 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 6 Dec 2022. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 6 Dec 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Participants With Treatment Emergent Adverse Events (TEAEs) (time frame: Up to 18 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Dec 2022.