Infections, MeningococcalPhase 2NCT03652610
A Study to Investigate the Safety and Immunogenicity of Different Formulations of GSK Biologicals' Meningococcal ACWY Conjugate Vaccine (GSK3536820A and Menveo) Administered to Healthy Adults 18 to 40 Years of Age
A Phase 2 study testing MenACWY liquid vaccine with approximately 30% MenA FS (GSK3536820A) and Licensed GSK MenACWY vaccine (Menveo) in people with Infections, Meningococcal, run by GlaxoSmithKline at 30 sites in 5 countries.
Trial summary
MenACWY (Menveo) is a GSK vaccine intended for protection against disease caused by meningococcal bacteria groups A, C, W and Y in infants, children and adults, licensed in more than 60 countries. Read more about this study
- Who is it for?
- Ages 18 to 40 yearsHealthy volunteers can take part
- Conditions the study is for
- Infections, Meningococcal
- What is being tested?
- MenACWY liquid vaccine with approximately 30% MenA FS (GSK3536820A) and Licensed GSK MenACWY vaccine (Menveo)
- Type of treatment
- Vaccines, Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 996 participants
- Where
- 30 sitesin 5 countries
- Study dates
- 7 Sep 2018to 11 Jun 2019
- Phase
- Phase 2
- 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 40 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Subjects who, in the opinion of the investigator, can and will comply with the requirements of the protocol or subjects' parent(s)/Legally Acceptable Respresentative(s) [LAR(s)] who, in the opinion of the investigator, can and will comply, with the requirements of the protocol.
- Written informed consent obtained from the subject/from the parents(s)/LAR(s) of the subject prior to performance of any study specific procedure.
- Written informed assent obtained for subjects below legal age of consent, if required by local regulations, at the time of enrolment.
- A male or female between, and including, ≥18 to ≤40 YoA at the time of the first vaccination.
- 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.
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- Non-childbearing potential is defined as pre-menarche, current bilateral tubal ligation or occlusion, hysterectomy, bilateral ovariectomy or post-menopause.
- Female subjects of childbearing potential may be enrolled in the study, if the subject:
- has practiced adequate contraception for 30 days prior to vaccination, and
- has a negative pregnancy test on the day of vaccination, and
- has agreed to continue adequate contraception during the entire treatment period. (approximately 1 month after vaccination).
Who cannot join
- Anaphylaxis following the administration of vaccine
- Any (clinical) condition that in the judgment of the investigator would make intramuscular injection unsafe and/or represents a contraindication to intramuscular vaccination and blood draws.
- Any confirmed or suspected immunosuppressive or immunodeficient condition, including HIV infection.
- Progressive, unstable or uncontrolled clinical conditions.
- Hypersensitivity, including allergy, to any component of vaccines, medicinal products or medical equipment whose use is foreseen in this study.
- Hypersensitivity to the active substances or to any of the excipients of the vaccine, including diphtheria toxoid (CRM197), or a life-threatening reaction after previous administration of a vaccine containing similar components.
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- Abnormal function of the immune system resulting from:
- Clinical conditions.
- Systemic administration of corticosteroids (Per os [PO]/ Intravenous [IV]/ Intramuscular [IM]) for more than 14 consecutive days within 90 days prior to informed consent, and until the Day 29 blood draw.
- Administration of antineoplastic and immuno-modulating agents or radiotherapy within 90 days prior to informed consent, and until the Day 29 blood draw.
- Received immunoglobulins or any blood products within 180 days prior to informed consent.
- Received an investigational or non-registered medicinal product within 30 days prior to informed consent.
- Any other clinical condition that, in the opinion of the investigator, might interfere with the results of the study or pose additional risk to the subject due to participation in the study.
- History of any meningococcal vaccination.
- Individuals who received any other vaccines within 7 days (for inactivated vaccines) or 14 days (for live vaccines) prior to enrolment in this study or who are planning to receive any vaccine within 28 days from the study vaccines*.
- In case an emergency mass vaccination for an unforeseen public health threat (e.g.: a pandemic) is organised by the public health authorities, outside the routine immunization program, the time period described above can be reduced if necessary for that vaccine provided it is licensed and used according to its Summary of Product Characteristics (SmPC) or Prescribing Information and according to the local governmental recommendations and provided a written approval of the Sponsor is obtained.
- Administration of long-acting immune-modifying drugs at any time during the study period (e.g. infliximab).
- 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 vaccine/product. (pharmaceutical product or device).
- Current or previous, confirmed or suspected disease caused by N. meningitidis.
- Household contact with and/or intimate exposure to an individual with any laboratory confirmed N. meningitidis infection within 60 days prior to study vaccination.
- Acute disease and/or fever within 3 days prior to study vaccination. Note: enrolment may be postponed/delayed until such transient circumstances have ended.
- Fever is defined as body temperature ≥ 38.0°C / 100.4°F. The preferred location for measuring temperature in this study will be the oral cavity.
- Subjects with a minor illness (such as mild diarrhoea, mild upper respiratory infection) without fever may be enrolled at the discretion of the investigator.
- Received systemic antibiotic treatment within 3 days prior to study vaccination or blood draw.
- Study personnel as an immediate family or household member.
- Pregnant or lactating women.
Trial locations and contacts
30 sites in 5 countries.
30 sites in 5 countries
Canada10 sites
GSK Investigational Site
Brampton, Ontario, L6T 0G1
GSK Investigational Site
Halifax, Nova Scotia, B3K 6R8
GSK Investigational Site
London, Ontario, N5W 6A2
GSK Investigational Site
Mirabel, Quebec, J7J 2K8
GSK Investigational Site
Pointe-Claire, Quebec, H9R 4S3
GSK Investigational Site
Québec, Quebec, G1W 4R4
GSK Investigational Site
Sherbrooke, Quebec, J1L 0H8
GSK Investigational Site
Toronto, Ontario, M9W 4L6
GSK Investigational Site
Truro, Nova Scotia, B2N 1L2
GSK Investigational Site
Victoria, British Columbia, V8V 3M9
Australia8 sites
GSK Investigational Site
Adelaide, South Australia, 5000
GSK Investigational Site
Blacktown, New South Wales, 2148
GSK Investigational Site
Gold Coast, Queensland, 4222
GSK Investigational Site
Kanwal, New South Wales, 2259
GSK Investigational Site
Melbourne, Victoria, 3004
GSK Investigational Site
Melbourne
GSK Investigational Site
Murdoch, Western Australia, 6150
GSK Investigational Site
Sherwood, Queensland, 4075
Germany6 sites
GSK Investigational Site
Berlin, 10117
GSK Investigational Site
Essen, North Rhine-Westphalia, 45355
GSK Investigational Site
Goch, North Rhine-Westphalia, 47574
GSK Investigational Site
Hamburg, 22143
GSK Investigational Site
Mainz, Rhineland-Palatinate, 55116
GSK Investigational Site
Würzburg, Bavaria, 97070
Italy4 sites
GSK Investigational Site
Chieti, Abruzzo, 66013
GSK Investigational Site
Conegliano - Treviso, 31015
GSK Investigational Site
Genoa, Liguria, 16132
GSK Investigational Site
Massafra (TA), 74016
Belgium2 sites
GSK Investigational Site
Ghent, 9000
GSK Investigational Site
Leuven, 3000
About this study
Official title: Immunogenicity, Reactogenicity and Safety of Two Formulations of GSK Biologicals' Meningococcal ACWY Conjugate Vaccine (GSK3536820A and Menveo) in Healthy Adults 18 to 40 Years of Age
MenACWY (Menveo) is a GSK vaccine intended for protection against disease caused by meningococcal bacteria groups A, C, W and Y in infants, children and adults, licensed in more than 60 countries.
The purpose of this study is to compare the immunogenicity of the currently licensed MenACWY vaccine with the investigational MenACWY liquid vaccine.
- Conditions
- Infections, Meningococcal
- Being tested
- MenACWY liquid vaccine with approximately 30% MenA FS (GSK3536820A), Licensed GSK MenACWY vaccine (Menveo)
- Keywords
- Meningitis, Liquid formulation, Meningococcal disease
- Medical subject headings
- Meningococcal Infections, Meningitis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
MenACWY liquid vaccine with approximately 30% MenA FS (GSK3536820A)Biological
Also called GSK3536820A
Single dose administered at Day 1, by intramuscular injection in the deltoid of the non-dominant arm
Licensed GSK MenACWY vaccine (Menveo)Biological
Single dose administered at Day 1, by intramuscular injection in the deltoid of the non-dominant arm
| Study group | Role | What they receive |
|---|---|---|
| GSK3536820A ACWY_Liq Group | Experimental | Healthy adults, 18 to 40 years of age, receiving at Day 1 a single dose of investigational MenACWY liquid vaccine (GSK3536820A) formulation with approximately 30% Men A FS. Receives: Biological: MenACWY liquid vaccine with approximately 30% MenA FS (GSK3536820A) |
| ACWY Group | Active comparator | Healthy adults 18 to 40 years of age, receiving at Day 1 a single dose of licensed GSK's MenACWY vaccine formulation (Menveo). Receives: Biological: Licensed GSK MenACWY vaccine (Menveo) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Adjusted Human Serum Bactericidal Activity (hSBA) Geometric Mean Titers (GMTs) Against N. Meningitidis Serogroup A for Each Vaccine Group, and Between-group Ratios
hSBA titers against N.meningitidis serogroup A were calculated in terms of GMTs adjusted for pre-vaccination titer.
Measured: At Day 29
Secondary outcomes (10)
hSBA GMTs Against Each of the N.Meningitidis Serogroups A, C, W and Y for Each Vaccine Group, and Between-group Ratios
hSBA titers were calculated in terms of GMTs, at Day 1 and Day 29, against each of the N. meningitidis serogroups A, C, W and Y.
Measured: At Day 1 and Day 29
Within-group Geometric Mean Ratios (GMRs) Against Each of the N.Meningitidis Serogroups A, C, W and Y
Within-group ratios of hSBA GMTs against each of the N.meningitidis serogroups A, C, W and Y at Day 29 compared to Day 1.
Measured: At Day 29
Percentages of Subjects With a ≥4 Fold Rise in hSBA Antibody Titers for Each of the N.Meningitidis Serogroups A, C,W and Y for Each Vaccine Group, and Between-group Differences
The percentages of subjects with a ≥ 4-fold rise in post-vaccination hSBA (at Day 29 compared to Day 1) and associated 2-sided 95% Clopper-Pearson CIs were computed by group and for each N. meningitidis serogroups A, C, W and Y. A 4-fold rise in the hSBA titers is defined as: for individuals, whose pre-vaccination titers are < the LOD (limit of detection), the post-vaccination titers must be ≥ 4-fold the LOD or ≥ the LLOQ (lower of limit of quantitation) whichever is greater; for individuals, whose pre-vaccination titers are ≥ the LOD and ≤ the LLOQ, the post-vaccination titers must be at least four times the LLOQ; for individuals whose pre-vaccination titers are > the LLOQ, the post-vaccination titers must be at least four times the pre-vaccination
Measured: At Day 29
Percentages of Subjects With hSBA Titers ≥8 Against Each of the N. Meningitidis Serogroups A, C, W and Y for Each Vaccine Group, and Between-group Differences
For each vaccine group the percentage of subjects with hSBA titer ≥8, and its associated two-sided 95% Clopper-Pearson CIs were computed for each of the N. meningitidis serogroups A, C, W and Y.
Measured: At Day 1 and Day 29
Percentages of Subjects With hSBA Titers ≥LLOQ Against Each of the N. Meningitidis Serogroups A, C, W and Y for Each Vaccine Group, and Between-group Differences
For each vaccine group the percentage of subjects with hSBA titer ≥LLOQ, and its associated two-sided 95% Clopper-Pearson CIs were computed for each of the N. meningitidis serogroups A, C, W and Y.
Measured: At Day 1 and Day 29
Number of Subjects Reported With Solicited Local and Systemic AEs
Number of subjects with solicited local and systemic AEs during the 7-days period (including the day of vaccination) after the vaccination.
Measured: From Day 1 (6 hours) to Day 7 after vaccination
Number of Subjects Reported With Other Indicators of Reactogenicity
Number of subjects reporting other indicators of reactogenicity such as use of analgesics/antipyretics within 7 days after vaccination
Measured: From Day 1 to Day 7 after vaccination
Number of Subjects Reported With Any Unsolicited AEs Within 29 Days After Vaccination
An AE is defined as any untoward medical occurrence in a subject or clinical investigation subject administered with a pharmaceutical product at any dose that does not necessarily have to have a causal relationship with this treatment.
Measured: From Day 1 to Day 29 after vaccination
Number of Subjects Reported With AEs Leading to Withdrawal, Medically Attended AEs and Serious Adverse Events (SAEs)
Medically attended AEs are defined as events for which the subject received medical attention defined as hospitalization, an emergency room visit, or a visit to or from medical personnel (medical doctor) for any reason. Any medically attended AE(s) is occurrence of any medically attended AE(s) regardless of intensity grade or relation to vaccination. Serious adverse event is any congenital anomaly/birth defect in the offspring of a study subject or any untoward medical occurrence that results in death or life threatening or requires hospitalization or results in disability or incapacity
Measured: From Day 1 to Day 181 (during the entire study period)
Number of Subjects Reported With Any Unsolicited Adverse Events (AEs) Within 30 Minutes After Vaccination
An AE is defined as any untoward medical occurrence in a subject or clinical investigation subject administered with a pharmaceutical product at any dose that does not necessarily have to have a causal relationship with this treatment.
Measured: Within 30 minutes after vaccination at Day 1
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Aug 2018
- Study start7 Sep 2018
- Primary completion17 Jan 2019
- Study completion11 Jun 2019
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 Infections, MeningococcalStudies 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 2
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 996 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
- NCT03652610
- Sponsor's protocol ID
- 205343
- Other IDs
- V59_71, 2017-003692-61, 2017
- Status last verified
- Jan 2021
- First submitted
- 28 Aug 2018
- Last updated
- 9 Feb 2021
- Results posted
- Yes, on ClinicalTrials.gov
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: IPD for this study will be made available via the Clinical Study Data Request site.
Publications
Vir Singh P, Tiberi P, Di Domenico GF, Romolini V, Mzolo T, Costantini M, Akhund T, Basile V, Lattanzi M, Pellegrini M. Fully Liquid MenACWY-CRM Vaccine: Results from an Integrated Safety Analysis. Drug Saf. 2023 Jan;46(1):99-108. doi: 10.1007/s40264-022-01242-8. Epub 2022 Nov 11.
PubMed 36369456
Study at a glance
From the registry record, last updated by the sponsor on 9 Feb 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Immunogenicity, Reactogenicity and Safety of Two Formulations of GSK Biologicals' Meningococcal ACWY Conjugate Vaccine (GSK3536820A and Menveo) in Healthy Adults 18 to 40 Years of Age
- ClinicalTrials.gov ID
- NCT03652610
- Acronym / sponsor ID
- 205343
- Conditions
- Infections, Meningococcal
- Keywords
- Meningitis, Liquid formulation, Meningococcal disease
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 996 participants (actual)
- Lead sponsor
- GlaxoSmithKlineIndustry (pharma, biotech, devices)
- Study start
- 7 Sep 2018 (actual)
- Primary completion
- 17 Jan 2019 (actual)
- Study completion
- 11 Jun 2019 (actual)
- First posted
- 29 Aug 2018 (actual)
- Results
- Posted 9 Feb 2021
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
MenACWY (Menveo) is a GSK vaccine intended for protection against disease caused by meningococcal bacteria groups A, C, W and Y in infants, children and adults, licensed in more than 60 countries.
The purpose of this study is to compare the immunogenicity of the currently licensed MenACWY vaccine with the investigational MenACWY liquid vaccine.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| GSK3536820A ACWY_Liq Group | Experimental | Biological: MenACWY liquid vaccine with approximately 30% MenA FS (GSK3536820A)Healthy adults, 18 to 40 years of age, receiving at Day 1 a single dose of investigational MenACWY liquid vaccine (GSK3536820A) formulation with approximately 30% Men A FS. |
| ACWY Group | Active comparator | Biological: Licensed GSK MenACWY vaccine (Menveo)Healthy adults 18 to 40 years of age, receiving at Day 1 a single dose of licensed GSK's MenACWY vaccine formulation (Menveo). |
Who may qualify
- Ages
- 18 to 40 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (11 listed)
- Subjects who, in the opinion of the investigator, can and will comply with the requirements of the protocol or subjects' parent(s)/Legally Acceptable Respresentative(s) [LAR(s)] who, in the opinion of the investigator, can and will comply, with the requirements of the protocol.
- Written informed consent obtained from the subject/from the parents(s)/LAR(s) of the subject prior to performance of any study specific procedure.
- Written informed assent obtained for subjects below legal age of consent, if required by local regulations, at the time of enrolment.
- A male or female between, and including, ≥18 to ≤40 YoA at the time of the first vaccination.
- Healthy subjects as established by medical history and clinical examination before entering into the study.
Key exclusion criteria (26 listed)
- Anaphylaxis following the administration of vaccine
- Any (clinical) condition that in the judgment of the investigator would make intramuscular injection unsafe and/or represents a contraindication to intramuscular vaccination and blood draws.
- Any confirmed or suspected immunosuppressive or immunodeficient condition, including HIV infection.
- Progressive, unstable or uncontrolled clinical conditions.
- Hypersensitivity, including allergy, to any component of vaccines, medicinal products or medical equipment whose use is foreseen in this study.
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 |
|---|---|---|
| MenACWY liquid vaccine with approximately 30% MenA FS (GSK3536820A)Also: GSK3536820ASingle dose administered at Day 1, by intramuscular injection in the deltoid of the non-dominant arm | Biological | GSK3536820A ACWY_Liq Group |
| Licensed GSK MenACWY vaccine (Menveo)Single dose administered at Day 1, by intramuscular injection in the deltoid of the non-dominant arm | Biological | ACWY Group |
Primary outcome
Adjusted Human Serum Bactericidal Activity (hSBA) Geometric Mean Titers (GMTs) Against N. Meningitidis Serogroup A for Each Vaccine Group, and Between-group Ratios
Time frame: At Day 29
hSBA titers against N.meningitidis serogroup A were calculated in terms of GMTs adjusted for pre-vaccination titer.
10 secondary outcomes
hSBA GMTs Against Each of the N.Meningitidis Serogroups A, C, W and Y for Each Vaccine Group, and Between-group Ratios
Time frame: At Day 1 and Day 29
Within-group Geometric Mean Ratios (GMRs) Against Each of the N.Meningitidis Serogroups A, C, W and Y
Time frame: At Day 29
Percentages of Subjects With a ≥4 Fold Rise in hSBA Antibody Titers for Each of the N.Meningitidis Serogroups A, C,W and Y for Each Vaccine Group, and Between-group Differences
Time frame: At Day 29
Percentages of Subjects With hSBA Titers ≥8 Against Each of the N. Meningitidis Serogroups A, C, W and Y for Each Vaccine Group, and Between-group Differences
Time frame: At Day 1 and Day 29
Percentages of Subjects With hSBA Titers ≥LLOQ Against Each of the N. Meningitidis Serogroups A, C, W and Y for Each Vaccine Group, and Between-group Differences
Time frame: At Day 1 and Day 29
Number of Subjects Reported With Solicited Local and Systemic AEs
Time frame: From Day 1 (6 hours) to Day 7 after vaccination
Number of Subjects Reported With Other Indicators of Reactogenicity
Time frame: From Day 1 to Day 7 after vaccination
Number of Subjects Reported With Any Unsolicited AEs Within 29 Days After Vaccination
Time frame: From Day 1 to Day 29 after vaccination
Number of Subjects Reported With AEs Leading to Withdrawal, Medically Attended AEs and Serious Adverse Events (SAEs)
Time frame: From Day 1 to Day 181 (during the entire study period)
Number of Subjects Reported With Any Unsolicited Adverse Events (AEs) Within 30 Minutes After Vaccination
Time frame: Within 30 minutes after vaccination at Day 1
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 Feb 2021.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 36369456Vir Singh P, Tiberi P, Di Domenico GF, Romolini V, Mzolo T, Costantini M, Akhund T, Basile V, Lattanzi M, Pellegrini M. Fully Liquid MenACWY-CRM Vaccine: Results from an Integrated Safety Analysis. Drug Saf. 2023 Jan;46(1):99-108. doi: 10.1007/s40264-022-01242-8. Epub 2022 Nov 11.
- Individual participant dataSharing planned: Yes. IPD for this study will be made available via the Clinical Study Data Request 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
30 sites in 5 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing MenACWY liquid vaccine with approximately 30% MenA FS (GSK3536820A) and Licensed GSK MenACWY vaccine (Menveo) in people with Infections, Meningococcal, run by GlaxoSmithKline at 30 sites in 5 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 11 inclusion and 26 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 9 Feb 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 30 sites in Canada, Australia, Germany, Italy, Belgium. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
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 9 Feb 2021). 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?
Adjusted Human Serum Bactericidal Activity (hSBA) Geometric Mean Titers (GMTs) Against N. Meningitidis Serogroup A for Each Vaccine Group, and Between-group Ratios (time frame: At Day 29). 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 NCT03652610, 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 9 Feb 2021.