Acellular PertussisPhase 4NCT01323959
Immunogenicity and Safety of Booster Dose of BoostrixTM Polio Vaccine in Previously Boosted Adults
A Phase 4 study testing BoostrixTM Polio in people with Acellular Pertussis and Poliomyelitis, run by GlaxoSmithKline at 15 sites in 2 countries.
Trial summary
This study will evaluate the persistence of immune response against diphtheria, tetanus, pertussis and poliomyelitis in healthy adults, 10 years after a booster dose, and also assess the immunogenicity and safety of another booster dose of BoostrixTM Polio. Read more about this study
- Who is it for?
- Ages 25 years and olderHealthy volunteers can take part
- Conditions the study is for
- Acellular Pertussis, Poliomyelitis, Diphtheria
- What is being tested?
- BoostrixTM Polio
- Type of treatment
- Vaccines, Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 212 participants
- Where
- 15 sitesin 2 countries
- Study dates
- 1 Apr 2011to 1 Mar 2012
- Phase
- Phase 4
- 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 25 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Subjects who the investigator believes can and will comply with the requirements of the protocol.
- Male or female subjects who have received vaccine in study NCT01277705.
- Written informed consent obtained from the subject.
- Healthy subjects as established by medical history and clinical examination before entering into the study.
- Female subjects of non-childbearing potential may be enrolled in the study.
- Female subjects of childbearing potential may be enrolled in the study and receive the booster vaccine, if the subject:
Show all 9Show fewer
- practices/has practiced adequate contraception for 30 days prior to vaccination, and
- has a negative pregnancy test on the day of vaccination, and
- agrees to continue adequate contraception during the entire booster epoch.
Who cannot join
- Use of any investigational or non-registered product other than the study vaccine within 30 days preceding the booster dose of the study vaccine, or planned use during the study period.
- Chronic administration of immunosuppressants or other immune-modifying drugs within six months prior to the booster dose.
- Administration of a vaccine not foreseen by the study protocol within 30 days prior to booster vaccination, or planned administration during the active study period.
- Concurrently participating in another clinical study, at any time during the study period, in which the subject has been or will be exposed to an investigational or a non-investigational product.
- History of any reaction or hypersensitivity likely to be exacerbated by any component of the vaccine.
- Previous booster vaccination against diphtheria, tetanus, pertussis or poliovirus since the dose received in study NCT01277705. In Germany, previous dose of a monovalent vaccine against pertussis is allowed for subjects in the Group C.
Show all 19Show fewer
- History of diphtheria, tetanus, pertussis or poliomyelitis diseases following the receipt of booster dose in study NCT01277705.
- Any confirmed or suspected immunosuppressive or immunodeficiency condition based on medical history and physical examination.
- Occurrence of transient thrombocytopenia or neurological complications following an earlier immunisation against diphtheria and/or tetanus.
- Occurrence of any of the following adverse event after a previous administration of a DTP vaccine:
- Hypersensitivity reaction to any component of the vaccine,
- encephalopathy of unknown aetiology occurring within seven days following previous vaccination with pertussis-containing vaccine,
- fever ≥ 40°C within 48 hours of vaccination not due to another identifiable cause,
- collapse or shock-like state within 48 hours of vaccination,
- convulsions with or without fever, occurring within 3 days of vaccination.
- Administration of immunoglobulins and/or any blood products within the three months preceding the booster dose or planned administration during the study period.
- Acute disease and/or fever at the time of enrolment.
- Pregnant or lactating female.
- Female planning to become pregnant or planning to discontinue contraceptive precautions.
Trial locations and contacts
15 sites in 2 countries.
15 sites in 2 countries
Germany8 sites
GSK Investigational Site
Deggendorf, Bavaria, 94469
GSK Investigational Site
Höhenkirchen-Siegertsbrunn, Bavaria, 85635
GSK Investigational Site
Munich, Bavaria, 80337
GSK Investigational Site
Regensburg, Bavaria, 93053
GSK Investigational Site
Selbitz, Bavaria, 95152
GSK Investigational Site
Vilshofen, Bavaria, 94474
GSK Investigational Site
Weilheim, Bavaria, 82362
GSK Investigational Site
Würzburg, Bavaria, 97070
France7 sites
GSK Investigational Site
Derval, 44590
GSK Investigational Site
La Chapelle-Basse-Mer, 44450
GSK Investigational Site
La Riche, 37250
GSK Investigational Site
Nantes, 44277
GSK Investigational Site
Nantes, 44300
GSK Investigational Site
Tours, 37000
GSK Investigational Site
Tours, 37200
About this study
Official title: Evaluation of GSK Biologicals' Boostrix™ Polio in Healthy Adults, 10 Years After a Booster Vaccination
This study will evaluate the persistence of immune response against diphtheria, tetanus, pertussis and poliomyelitis in healthy adults, 10 years after a booster dose, and also assess the immunogenicity and safety of another booster dose of BoostrixTM Polio.
Read the detailed description
This protocol posting has been updated following protocol amendment 1, dated 03 June 2011. The impacted section is: Eligibility Criteria (Exclusion criteria).
- Conditions
- Acellular Pertussis, Poliomyelitis, Diphtheria, Tetanus
- Being tested
- BoostrixTM Polio
- Keywords
- BoostrixTM Polio, dTpa-IPV, booster
- Medical subject headings
- Poliomyelitis, Diphtheria, Tetanus
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
BoostrixTM PolioBiological
Single dose, intramuscular administration.
| Study group | Role | What they receive |
|---|---|---|
| BOOSTRIX POLIO GROUP | Experimental | Healthy subjects who had received one booster dose Boostrix™ Polio vaccine in the NCT01277705 study received one additional booster dose of Boostrix™ Polio vaccine in this study, administered as an intramuscular injection into the deltoid region of the left arm. Receives: Biological: BoostrixTM Polio |
| BOOSTRIX+POLIORIX GROUP | Experimental | Healthy subjects who had received one booster dose of the co-administered Boostrix™ and Poliorix™ vaccines in the NCT01277705 study received one booster dose Boostrix™ Polio vaccine in this study, administered as an intramuscular injection into the deltoid region of the left arm. Receives: Biological: BoostrixTM Polio |
| REVAXIS GROUP | Experimental | Healthy subjects who had received one booster dose of Revaxis® vaccine in the NCT01277705 study received one booster dose of Boostrix™ Polio vaccine in this study, administered as an intramuscular injection into the deltoid region of the left arm. Receives: Biological: BoostrixTM Polio |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Antigens
A seroprotected subject is defined as a vaccinated subject with anti-D and anti-T antibody concentration greater than or equal to (≥) 0.1 international units per millilitre (IU/mL).
Measured: At Month 1
Number of Seroprotected Subjects Against Poliovirus Types 1, 2 and 3
A seroprotected subject is defined as a vaccinated subject with anti-poliovirus types 1, 2 and 3 antibody concentration greater than or equal to (≥) 8 Effective Dose 50 (ED50)
Measured: At Month 1
Number of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Antigens
A seroprotected subject is defined as a vaccinated subject with anti-D and anti-T antibody concentration greater than or equal to (≥) 0.1 international units per millilitre (IU/mL)
Measured: At Day 0
Number of Seroprotected Subjects Against Poliovirus Types 1, 2 and 3
A seroprotected subject is defined as a vaccinated subject with anti-poliovirus types 1, 2 and 3 antibody concentration greater than or equal to (≥) 8 Effective Dose 50 (ED50)
Measured: At Day 0
Number of Subjects With Anti-pertussis Toxoid (Anti-PT), Anti-filamentous Haemagglutinin (Anti-FHA), Anti-pertactin (Anti-PRN) Antibodies
Cut-off values assessed were greater than or equal to ≥ 5 Enzyme Linked Immunosorbent Assay (ELISA) units per millilitre (EL.U/ml)
Measured: At Day 0
Anti-diphteria (Anti-D) and Anti-tetanus (Anti-T) Antibody Concentrations
Concentrations are presented as geometric mean concentrations (GMCs), expressed in international units per millilitre (IU/mL)
Measured: At Day 0
Anti-polio 1, Anti-polio 2 and Anti-polio 3 Antibody Titers
Titers are presented as geometric mean titers (GMTs).
Measured: At Day 0
Anti-pertussis Toxoid (Anti-PT), Anti-filamentous Haemagglutinin (Anti-FHA), Anti-pertactin (Anti-PRN) Antibodies Antibody Concentrations
Concentrations are presented as geometric mean concentrations (GMCs), expressed in expressed in ELISA units per millilitre (EL.U/mL)
Measured: At Day 0
Secondary outcomes (9)
Number of Subjects With Booster Response to Pertussis Toxoid (PT), Filamentous Haemagglutinin (FHA), Pertactin (PRN)
Booster response was defined as: for initially seronegative subjects: antibody concentration ≥ 20 EL.U/mL at post booster vaccination; for initially seropositive subjects with pre-vaccination antibody concentration < 20 EL.U/mL: antibody concentration at post booster ≥ 4 fold the pre-vaccination antibody concentration; and for initially seropositive subjects with pre-vaccination antibody concentration ≥ 20 EL.U/mL: antibody concentration at post booster ≥ 2 fold the pre-vaccination antibody concentration.
Measured: At Month 1
Number of Subjects With Anti-pertussis Toxoid (Anti-PT), Anti-filamentous Haemagglutinin (Anti-FHA), Anti-pertactin (Anti-PRN) Antibodies Above the Cut-off
Cut-off values assessed were greater than or equal to ≥ 5 Enzyme Linked Immunosorbent Assay (ELISA) units per millilitre (EL.U/ml)
Measured: At Month 1
Anti-diphteria (Anti-D) and Anti-tetanus (Anti-T) Antibody Concentrations
Concentrations are presented as geometric mean concentrations (GMCs), expressed in international units per millilitre (IU/mL)
Measured: At Month 1
Anti-polio 1, Anti-polio 2 and Anti-polio 3 Antibody Titers
Titers are presented as geometric mean titers (GMTs).
Measured: At Month 1
Anti-pertussis Toxoid (Anti-PT), Anti-filamentous Haemagglutinin (Anti-FHA), Anti-pertactin (Anti-PRN) Antibodies Antibody Concentrations
Concentrations are presented as geometric mean concentrations (GMCs), expressed in expressed in ELISA units per millilitre (EL.U/mL)
Measured: At Month 1
Number of Subjects With Any and Grade 3 Solicited Local Symptoms
Assessed solicited local symptoms were pain, redness and swelling. Any = occurrence of the symptom regardless of intensity grade. Grade 3 pain = pain that prevented normal activity. Grade 3 redness/swelling = redness/swelling spreading beyond 50 millimeters (mm) of injection site.
Measured: During the 4-day (Day 0-Day 3) follow-up period after vaccination
Number of Subjects With Any, Grade 3 and Related Solicited General Symptoms.
Assessed solicited general symptoms were fatigue, fever [defined as axillary temperature equal to or above (≥) 37.5 degrees Celsius (°C)], headache and gastrointestinal symptoms. Any = occurrence of the symptom regardless of intensity grade. Grade 3 symptom = symptom that prevented normal activity. Grade 3 fever = fever > 39.0 °C. Related = symptom assessed by the investigator as related to the vaccination.
Measured: During the 4-day (Day 0-Day 3) follow-up period after vaccination
Number of Subjects With Any Unsolicited Adverse Events (AEs).
An unsolicited AE covers any untoward medical occurrence in a clinical investigation subject temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product and reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms. Any was defined as the occurrence of any unsolicited AE regardless of intensity grade or relation to vaccination.
Measured: During the 31-day (Day 0-Day 30) follow-up period after vaccination
Number of Subjects With Serious Adverse Events (SAEs).
Serious adverse events (SAEs) assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization or result in disability/incapacity.
Measured: Month 0 - Month 1
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Mar 2011 (estimated)
- Study start1 Apr 2011
- Primary completion1 Mar 2012
- Study completion1 Mar 2012
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.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Acellular PertussisStudies of the same condition, open and under way.
- More trials run by GlaxoSmithKlineThe sponsor's other registered studies.
- 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 4
- Primary purpose
- Prevention
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 212 participants (actual)
Sponsor and investigators
- Lead sponsor
- GlaxoSmithKline
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- GSK Clinical Trials, Study director, GlaxoSmithKline
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01323959
- Sponsor's protocol ID
- 113060
- Status last verified
- Apr 2017
- First submitted
- 24 Mar 2011
- Last updated
- 6 Jun 2018
- Results posted
- Yes, on ClinicalTrials.gov
- Individual data sharing
- Yes: Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.
Publications
Kovac M, Rathi N, Kuriyakose S, Hardt K, Schwarz TF. Immunogenicity and reactogenicity of a decennial booster dose of a combined reduced-antigen-content diphtheria-tetanus-acellular pertussis and inactivated poliovirus booster vaccine (dTpa-IPV) in healthy adults. Vaccine. 2015 May 21;33(22):2594-601. doi: 10.1016/j.vaccine.2015.03.104. Epub 2015 Apr 14.
PubMed 25882172
Study at a glance
From the registry record, last updated by the sponsor on 6 Jun 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation of GSK Biologicals' Boostrix™ Polio in Healthy Adults, 10 Years After a Booster Vaccination
- ClinicalTrials.gov ID
- NCT01323959
- Acronym / sponsor ID
- 113060
- Conditions
- Acellular Pertussis, Poliomyelitis, Diphtheria, Tetanus
- Keywords
- BoostrixTM Polio, dTpa-IPV, booster
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 212 participants (actual)
- Lead sponsor
- GlaxoSmithKlineIndustry (pharma, biotech, devices)
- Study start
- 1 Apr 2011
- Primary completion
- 1 Mar 2012 (actual)
- Study completion
- 1 Mar 2012 (actual)
- First posted
- 28 Mar 2011 (estimated)
- Results
- Posted 3 Aug 2017
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will evaluate the persistence of immune response against diphtheria, tetanus, pertussis and poliomyelitis in healthy adults, 10 years after a booster dose, and also assess the immunogenicity and safety of another booster dose of BoostrixTM Polio.
Detailed description
This protocol posting has been updated following protocol amendment 1, dated 03 June 2011. The impacted section is: Eligibility Criteria (Exclusion criteria).
Study design
- Primary purpose
- Prevention
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| BOOSTRIX POLIO GROUP | Experimental | Biological: BoostrixTM PolioHealthy subjects who had received one booster dose Boostrix™ Polio vaccine in the NCT01277705 study received one additional booster dose of Boostrix™ Polio vaccine in this study, administered as an intramuscular injection into the deltoid region of the left arm. |
| BOOSTRIX+POLIORIX GROUP | Experimental | Biological: BoostrixTM PolioHealthy subjects who had received one booster dose of the co-administered Boostrix™ and Poliorix™ vaccines in the NCT01277705 study received one booster dose Boostrix™ Polio vaccine in this study, administered as an intramuscular injection into the deltoid region of the left arm. |
| REVAXIS GROUP | Experimental | Biological: BoostrixTM PolioHealthy subjects who had received one booster dose of Revaxis® vaccine in the NCT01277705 study received one booster dose of Boostrix™ Polio vaccine in this study, administered as an intramuscular injection into the deltoid region of the left arm. |
Who may qualify
- Ages
- 25 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (9 listed)
- Subjects who the investigator believes can and will comply with the requirements of the protocol.
- Male or female subjects who have received vaccine in study NCT01277705.
- Written informed consent obtained from the subject.
- Healthy subjects as established by medical history and clinical examination before entering into the study.
- Female subjects of non-childbearing potential may be enrolled in the study.
Key exclusion criteria (19 listed)
- Use of any investigational or non-registered product other than the study vaccine within 30 days preceding the booster dose of the study vaccine, or planned use during the study period.
- Chronic administration of immunosuppressants or other immune-modifying drugs within six months prior to the booster dose.
- Administration of a vaccine not foreseen by the study protocol within 30 days prior to booster vaccination, or planned administration during the active study period.
- Concurrently participating in another clinical study, at any time during the study period, in which the subject has been or will be exposed to an investigational or a non-investigational product.
- History of any reaction or hypersensitivity likely to be exacerbated by any component of the vaccine.
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 |
|---|---|---|
| BoostrixTM PolioSingle dose, intramuscular administration. | Biological | BOOSTRIX POLIO GROUP, BOOSTRIX+POLIORIX GROUP, REVAXIS GROUP |
Primary outcome
Number of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Antigens
Time frame: At Month 1
A seroprotected subject is defined as a vaccinated subject with anti-D and anti-T antibody concentration greater than or equal to (≥) 0.1 international units per millilitre (IU/mL).
Number of Seroprotected Subjects Against Poliovirus Types 1, 2 and 3
Time frame: At Month 1
A seroprotected subject is defined as a vaccinated subject with anti-poliovirus types 1, 2 and 3 antibody concentration greater than or equal to (≥) 8 Effective Dose 50 (ED50)
Number of Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Antigens
Time frame: At Day 0
A seroprotected subject is defined as a vaccinated subject with anti-D and anti-T antibody concentration greater than or equal to (≥) 0.1 international units per millilitre (IU/mL)
Number of Seroprotected Subjects Against Poliovirus Types 1, 2 and 3
Time frame: At Day 0
A seroprotected subject is defined as a vaccinated subject with anti-poliovirus types 1, 2 and 3 antibody concentration greater than or equal to (≥) 8 Effective Dose 50 (ED50)
Number of Subjects With Anti-pertussis Toxoid (Anti-PT), Anti-filamentous Haemagglutinin (Anti-FHA), Anti-pertactin (Anti-PRN) Antibodies
Time frame: At Day 0
Cut-off values assessed were greater than or equal to ≥ 5 Enzyme Linked Immunosorbent Assay (ELISA) units per millilitre (EL.U/ml)
Anti-diphteria (Anti-D) and Anti-tetanus (Anti-T) Antibody Concentrations
Time frame: At Day 0
Concentrations are presented as geometric mean concentrations (GMCs), expressed in international units per millilitre (IU/mL)
Anti-polio 1, Anti-polio 2 and Anti-polio 3 Antibody Titers
Time frame: At Day 0
Titers are presented as geometric mean titers (GMTs).
Anti-pertussis Toxoid (Anti-PT), Anti-filamentous Haemagglutinin (Anti-FHA), Anti-pertactin (Anti-PRN) Antibodies Antibody Concentrations
Time frame: At Day 0
Concentrations are presented as geometric mean concentrations (GMCs), expressed in expressed in ELISA units per millilitre (EL.U/mL)
9 secondary outcomes
Number of Subjects With Booster Response to Pertussis Toxoid (PT), Filamentous Haemagglutinin (FHA), Pertactin (PRN)
Time frame: At Month 1
Number of Subjects With Anti-pertussis Toxoid (Anti-PT), Anti-filamentous Haemagglutinin (Anti-FHA), Anti-pertactin (Anti-PRN) Antibodies Above the Cut-off
Time frame: At Month 1
Anti-diphteria (Anti-D) and Anti-tetanus (Anti-T) Antibody Concentrations
Time frame: At Month 1
Anti-polio 1, Anti-polio 2 and Anti-polio 3 Antibody Titers
Time frame: At Month 1
Anti-pertussis Toxoid (Anti-PT), Anti-filamentous Haemagglutinin (Anti-FHA), Anti-pertactin (Anti-PRN) Antibodies Antibody Concentrations
Time frame: At Month 1
Number of Subjects With Any and Grade 3 Solicited Local Symptoms
Time frame: During the 4-day (Day 0-Day 3) follow-up period after vaccination
Number of Subjects With Any, Grade 3 and Related Solicited General Symptoms.
Time frame: During the 4-day (Day 0-Day 3) follow-up period after vaccination
Number of Subjects With Any Unsolicited Adverse Events (AEs).
Time frame: During the 31-day (Day 0-Day 30) follow-up period after vaccination
Number of Subjects With Serious Adverse Events (SAEs).
Time frame: Month 0 - Month 1
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 Jun 2018.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 25882172Kovac M, Rathi N, Kuriyakose S, Hardt K, Schwarz TF. Immunogenicity and reactogenicity of a decennial booster dose of a combined reduced-antigen-content diphtheria-tetanus-acellular pertussis and inactivated poliovirus booster vaccine (dTpa-IPV) in healthy adults. Vaccine. 2015 May 21;33(22):2594-601. doi: 10.1016/j.vaccine.2015.03.104. Epub 2015 Apr 14.
- Researchers can use this site to request access to anonymised patient level data and/or supporting documents from clinical studies to conduct further research.Link provided by the sponsor.
- Individual participant dataSharing planned: Yes. Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.
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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.
GSK Clinical Trials study director
GlaxoSmithKline
15 sites in 2 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing BoostrixTM Polio in people with Acellular Pertussis and Poliomyelitis, run by GlaxoSmithKline at 15 sites in 2 countries.
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 9 inclusion and 19 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 Jun 2018. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 15 sites in Germany, France. 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 phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
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 3 Aug 2017). 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 Seroprotected Subjects Against Diphteria (D) and Tetanus (T) Antigens (time frame: At Month 1). The study lists 8 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01323959, which also lists 1 linked publication.
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 Jun 2018.