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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT05542862
Registration number
NCT05542862
Ethics application status
Date submitted
8/09/2022
Date registered
16/09/2022
Titles & IDs
Public title
Booster Study of SpikoGen COVID-19 Vaccine
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Scientific title
Immunogenicity and Safety Study in Ambulatory Adults of a Single Intramuscular Dose of SpikoGen Vaccine as a Heterologous or Homologous Booster Dose Following Completion of a Primary Course of Covid-19 Vaccine
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Secondary ID [1]
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AUST-C19-booster
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
COVID-19
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Condition category
Condition code
Infection
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Other infectious diseases
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Respiratory
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Other respiratory disorders / diseases
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Other - SpikoGen vaccine
Experimental: SpikoGen vaccine - Single booster dose of SpikoGen Covid-19 vaccine
Treatment: Other: SpikoGen vaccine
Recombinant spike protein based Covid-19 vaccine
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Intervention code [1]
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Treatment: Other
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Seroconversion
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Assessment method [1]
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Proportion of study participants who seroconvert (4-fold or greater rise in serum spike antibody) by primary vaccine group
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Timepoint [1]
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Between baseline and 4 weeks post the booster dose
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Primary outcome [2]
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Seroprotection
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Assessment method [2]
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Proportion of study participants who achieve a spike protein neutralisation titer of 32 or greater by primary vaccine group
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Timepoint [2]
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Between baseline and 4 weeks post the booster dose
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Primary outcome [3]
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Geometric mean titer fold change
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Assessment method [3]
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Increase in Geometric mean titer of spike neutralisation antibodies by primary vaccine group
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Timepoint [3]
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Between baseline and 4 weeks post the booster dose
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Primary outcome [4]
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Safety assessment 1
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Assessment method [4]
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Frequency of Adverse events by primary vaccine group
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Timepoint [4]
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Occurring within 7 days after booster dose.
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Primary outcome [5]
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Safety assessment 2
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Assessment method [5]
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Frequency of Serious Adverse events by primary vaccine group
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Timepoint [5]
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Between time of administration of booster dose and through study completion, an average of 3 months
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Primary outcome [6]
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SARS-CoV-2 infection
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Assessment method [6]
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Frequency of SARS-CoV-2 infections in study participants by primary vaccine group, age, gender, co-morbidities, and past infection
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Timepoint [6]
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Between time of administration of booster dose and through study completion, an average of 3 months
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Primary outcome [7]
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Antibody durability
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Assessment method [7]
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The proportion of subjects who remain seroprotected throughout the duration of the study including broken down by primary vaccine group.
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Timepoint [7]
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Between time of administration of booster dose and through study completion, an average of 3 months
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Primary outcome [8]
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Seroconversion in participants with and without evidence of past infection
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Assessment method [8]
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Spike antibody seroconversion in baseline nuclear protein antibody positive versus negative participants by primary vaccine group
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Timepoint [8]
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Between baseline and 4 weeks post the booster dose and through study completion, an average of 3 months
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Primary outcome [9]
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Seroprotection in participants with and without evidence of past infection
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Assessment method [9]
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Spike antibody seroprotection in baseline nuclear protein antibody positive versus negative participants by primary vaccine group
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Timepoint [9]
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Between baseline and 4 weeks post the booster dose and through study completion, an average of 3 months
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Primary outcome [10]
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Spike antibody GMT in participants with and without evidence of past infection
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Assessment method [10]
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Spike antibody GMT in baseline nuclear protein antibody positive versus negative participants by primary vaccine group.
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Timepoint [10]
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Between baseline and 4 weeks post the booster dose and through study completion, an average of 3 months
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Secondary outcome [1]
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Antibody correlates of protection
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Assessment method [1]
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SARS-CoV-2 antibody levels in subjects with or without breakthrough SARS-CoV-2 infection
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Timepoint [1]
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Baseline and 4 weeks post the booster dose, and through study completion, an average of 3 months
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Eligibility
Key inclusion criteria
* Able to provide written informed consent
* Males or females 18 years of age or older
* Have previously had a primary course of Covid-19 vaccine with the most recent dose no less than 3 months previously.
* Understand and are likely to comply with planned study procedures and be available for all study visits.
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Minimum age
18
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
Exclusion Criteria
* Allergy to Spikogen vaccine or one of its components, e.g. polysorbate 80.
* Have received an experimental agent within 30 days prior to the study vaccination or expect to receive another experimental agent during the trial reporting period.
* Any serious medical, social or mental condition which, in the opinion of the investigator, would be detrimental to the subjects or the study.
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Study design
Purpose of the study
Prevention
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Allocation to intervention
NA
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Single group
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Other design features
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Phase
Phase 3
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Active, not recruiting
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
7/09/2022
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
30/10/2024
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Actual
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Sample size
Target
150
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
SA
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Recruitment hospital [1]
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ARASMI - Adelaide
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Recruitment postcode(s) [1]
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5042 - Adelaide
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
Vaxine Pty Ltd
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Address
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Country
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Other collaborator category [1]
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Other
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Name [1]
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Australian Respiratory and Sleep Medicine Institute Ltd
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Address [1]
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Country [1]
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Other collaborator category [2]
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Commercial sector/industry
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Name [2]
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Cinnagen
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Address [2]
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Country [2]
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Ethics approval
Ethics application status
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Summary
Brief summary
The purpose of the study is to assess the effectiveness of Spikogen vaccine when used as a 3rd or 4th dose booster in adults who have been previously vaccinated with any Covid-19 vaccine types, including mRNA vaccine, adenoviral vector vaccines, recombinant protein vaccines, or inactivated virus vaccines.
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Trial website
https://clinicaltrials.gov/study/NCT05542862
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Trial related presentations / publications
Tabarsi P, Anjidani N, Shahpari R, Mardani M, Sabzvari A, Yazdani B, Roshanzamir K, Bayatani B, Taheri A, Petrovsky N, Li L, Barati S. Safety and immunogenicity of SpikoGen(R), an Advax-CpG55.2-adjuvanted SARS-CoV-2 spike protein vaccine: a phase 2 randomized placebo-controlled trial in both seropositive and seronegative populations. Clin Microbiol Infect. 2022 Sep;28(9):1263-1271. doi: 10.1016/j.cmi.2022.04.004. Epub 2022 Apr 15. Tabarsi P, Anjidani N, Shahpari R, Roshanzamir K, Fallah N, Andre G, Petrovsky N, Barati S. Immunogenicity and safety of SpikoGen(R), an adjuvanted recombinant SARS-CoV-2 spike protein vaccine as a homologous and heterologous booster vaccination: A randomized placebo-controlled trial. Immunology. 2022 Nov;167(3):340-353. doi: 10.1111/imm.13540. Epub 2022 Jul 13. Li L, Honda-Okubo Y, Baldwin J, Bowen R, Bielefeldt-Ohmann H, Petrovsky N. Covax-19/Spikogen(R) vaccine based on recombinant spike protein extracellular domain with Advax-CpG55.2 adjuvant provides single dose protection against SARS-CoV-2 infection in hamsters. Vaccine. 2022 May 20;40(23):3182-3192. doi: 10.1016/j.vaccine.2022.04.041. Epub 2022 Apr 18. Li L, Honda-Okubo Y, Huang Y, Jang H, Carlock MA, Baldwin J, Piplani S, Bebin-Blackwell AG, Forgacs D, Sakamoto K, Stella A, Turville S, Chataway T, Colella A, Triccas J, Ross TM, Petrovsky N. Immunisation of ferrets and mice with recombinant SARS-CoV-2 spike protein formulated with Advax-SM adjuvant protects against COVID-19 infection. Vaccine. 2021 Sep 24;39(40):5940-5953. doi: 10.1016/j.vaccine.2021.07.087. Epub 2021 Aug 3. Tabarsi P, Anjidani N, Shahpari R, Mardani M, Sabzvari A, Yazdani B, Kafi H, Fallah N, Ebrahimi A, Taheri A, Petrovsky N, Barati S. Evaluating the efficacy and safety of SpikoGen(R), an Advax-CpG55.2-adjuvanted severe acute respiratory syndrome coronavirus 2 spike protein vaccine: a phase 3 randomized placebo-controlled trial. Clin Microbiol Infect. 2023 Feb;29(2):215-220. doi: 10.1016/j.cmi.2022.09.001. Epub 2022 Sep 10.
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Public notes
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Contacts
Principal investigator
Name
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Dimitar Sajkov, MD/PhD
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Address
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ARASMI
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for scientific queries
Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No
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No/undecided IPD sharing reason/comment
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT05542862