Booster Dose Study to Assess the Safety and Immunogenicity of ACM-001 Administered Intramuscularly or Intranasally.

Sponsor
ACM Biolabs (Industry)
Overall Status
Recruiting
CT.gov ID
NCT05385991
Collaborator
(none)
80
4
8
18
20
1.1

Study Details

Study Description

Brief Summary

An open label, randomized, dose comparison, sequential cohorts study design in healthy volunteers (young adults) is a frequently used design in vaccine Phase 1 studies.

ACM-001 is developed as a booster vaccine against SARS-CoV-2 after a full primary vaccination and booster (3 doses) schedule with any registered and commercial SARS-CoV-2 vaccines.

The plan is to start with a low dosage of antigen alone, followed by a combination of antigen and adjuvant and then to progress to higher dosages to define the safety profile of the candidate vaccine as primary endpoint, and its immunogenicity as secondary endpoint.

Condition or Disease Intervention/Treatment Phase
  • Biological: ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001)
Phase 1

Detailed Description

  • Open label, randomized, single dose study.

  • The ACM-001 vaccine will be evaluated in a single ascending dose (administered IM in 4 groups of 10 subjects and IN in 4 groups of 10 subjects), which will explore the amount of SARS-CoV-2 spike protein derived from strain B.1.351 (doses 1 and 2) and adjuvant CpG7909 (Doses 1 and 2) required to provide the optimum immunogenicity and safety, as a booster dose in subjects who were previously vaccinated (three doses) against SARS-CoV-2.

  • Eighty (N=80) healthy adult volunteers aged 18-55 years, will be enrolled and randomized in the IN and IM cohorts if they meet eligibility criteria at baseline. Participants who benefited from a complete 2 dose-primary vaccination followed by a booster dose schedule with registered and commercial COVID-19 vaccine(s), at least 4 months prior to study vaccination (maximum 1,000 IU of anti-S IgG), with or without previous infection by COVID-19 can be enrolled in this study.

  • Participants of cohorts 1,3,5 and 7 will receive an IM injection into the deltoid region, consisting of 0.4 mL per dose on Day 1. In cohorts 2, 4, 6 and 8, the vaccine will be administered IN (2 x 0.2 mL per dose) on Day 1.

  • Participants will be observed closely in the research unit for at least 2 hours following vaccination.

  • Participants will attend on-site follow-up visits 1 (Day 8) and 4 weeks (Day 29) after vaccination. Additional follow-up visits will occur at Months 3, 6 and 12.

  • Solicited local and systemic AEs will be collected for 7 days following the vaccination using a daily reactogenicity electronic diary (eDiary). Non-serious unsolicited AEs will be collected from administration until 28 days following vaccination. Serious AEs (SAEs) and AEs of special interest (AESI; list determined by the Safety Platform for Emergency Vaccines (SPEAC; Brighton collaboration)) will be collected throughout the whole 12-month study period.

  • Sentinel dosing will be applied to all cohorts for the early detection of safety signals. Three subjects will be dosed ahead of the other volunteers (at least 48 hours), with an interval of at least 2 hours between them, to ensure there are no serious acute reactions following vaccination. After global evaluation by the Investigator (or the responsible physician) and phone contact with the subjects on Day 3, and providing there are no safety concerns, the rest of the cohort (N=7) will be dosed.

  • Seven-day safety data of all subjects (N=20) of a given Ag/CpG dose level will be reviewed by an independent data safety monitoring board (DSMB). The interval between the last subject receiving his/her vaccine and vaccination of three sentinel subjects with the ascending dose levels will be at least 10 days.

  • On Day 1 (pre-vaccination) and on Days 8 and 29 (28 days post-vaccination), blood samples will be drawn for analysis of safety parameters.

  • At all timepoints, serum and saliva samples will be collected for analysis of the humoral immune responses (IgG, IgA and neutralizing antibodies).

  • On Day 1 (pre-vaccination), Day 29 (28 days post-vaccination) and Day 360 (one year post-vaccination) whole blood samples will be drawn for analysis of the cellular immune responses in peripheral blood mononuclear cells (PBMCs).

Study Design

Study Type:
Interventional
Anticipated Enrollment :
80 participants
Allocation:
Randomized
Intervention Model:
Sequential Assignment
Masking:
None (Open Label)
Primary Purpose:
Prevention
Official Title:
An Open Label, Randomized,Phase 1 Study to Evaluate the Safety and Immunogenicity of the ACM-SARS-CoV-2-beta With ACM-CpG Vaccine Candidate (ACM-001), Administered IM or IN as a 4th Dose in Healthy Adults
Actual Study Start Date :
Jul 1, 2022
Anticipated Primary Completion Date :
Dec 31, 2022
Anticipated Study Completion Date :
Dec 31, 2023

Arms and Interventions

Arm Intervention/Treatment
Experimental: SARS-CoV-2 beta S vaccine arm 1

SARS-CoV-2 beta S vaccine Antigen dose 1, no adjuvant, IM

Biological: ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001)
ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001): Artificial Cell Membranes (ACM) containing recombinant SARS-CoV-2, beta- variant strain, spike protein and ACMs containing CpG adjuvant

Experimental: SARS-CoV-2 beta S vaccine arm 2

SARS-CoV-2 beta S vaccine Antigen dose 1, no adjuvant, IN

Biological: ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001)
ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001): Artificial Cell Membranes (ACM) containing recombinant SARS-CoV-2, beta- variant strain, spike protein and ACMs containing CpG adjuvant

Experimental: SARS-CoV-2 beta S vaccine arm 3

SARS-CoV-2 beta S vaccine Antigen dose 2, adjuvant dose 1, IM

Biological: ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001)
ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001): Artificial Cell Membranes (ACM) containing recombinant SARS-CoV-2, beta- variant strain, spike protein and ACMs containing CpG adjuvant

Experimental: SARS-CoV-2 beta S vaccine arm 4

SARS-CoV-2 beta S vaccine Antigen dose 2, adjuvant dose 1, IN

Biological: ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001)
ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001): Artificial Cell Membranes (ACM) containing recombinant SARS-CoV-2, beta- variant strain, spike protein and ACMs containing CpG adjuvant

Experimental: SARS-CoV-2 beta S vaccine arm 5

SARS-CoV-2 beta S vaccine Antigen dose 1, adjuvant dose 1, IM

Biological: ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001)
ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001): Artificial Cell Membranes (ACM) containing recombinant SARS-CoV-2, beta- variant strain, spike protein and ACMs containing CpG adjuvant

Experimental: SARS-CoV-2 beta S vaccine arm 6

SARS-CoV-2 beta S vaccine Antigen dose 1, adjuvant dose 1, IN

Biological: ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001)
ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001): Artificial Cell Membranes (ACM) containing recombinant SARS-CoV-2, beta- variant strain, spike protein and ACMs containing CpG adjuvant

Experimental: SARS-CoV-2 beta S vaccine arm 7

SARS-CoV-2 beta S vaccine Antigen dose 1, adjuvant dose 2, IM

Biological: ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001)
ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001): Artificial Cell Membranes (ACM) containing recombinant SARS-CoV-2, beta- variant strain, spike protein and ACMs containing CpG adjuvant

Experimental: SARS-CoV-2 beta S vaccine arm 8

SARS-CoV-2 beta S vaccine Antigen dose 1, adjuvant dose 2, IN

Biological: ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001)
ACM-SARS-CoV-2-beta ACM-CpG vaccine candidate (ACM-001): Artificial Cell Membranes (ACM) containing recombinant SARS-CoV-2, beta- variant strain, spike protein and ACMs containing CpG adjuvant

Outcome Measures

Primary Outcome Measures

  1. Adverses events [through study completion, an average of 1 year]

    Frequency, duration and intensity of solicited local AEs reported during 7 days following vaccination: injection site pain, erythema/redness (including size), and swelling/induration (including size) after IM injection, or nose pain, ear pain, runny nose, sneezing, stuffy nose and throat pain after IN administration.

Secondary Outcome Measures

  1. Immune responses [through study completion, an average of 1 year]

    Humoral, cellular and mucosal immune responses

Eligibility Criteria

Criteria

Ages Eligible for Study:
18 Years to 55 Years
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
Yes
Inclusion Criteria:
  1. Signed informed consent prior to any study-related procedure;

  2. Subjects must have received a complete primary vaccination schedule and a third booster dose with registered and commercial vaccine(s) against SARS-CoV-2, of which the last dose was given at least 4 months prior to study vaccination (maximum of 1,000 IU of anti-S IgG);

  3. Healthy males and females, 18-55 years of age, inclusive at screening;

  4. Body mass index (BMI) ≥ 18.0 and < 30.0 kg/m2;

  5. Good health, based upon the results of medical history, physical examination, vital signs, laboratory profiles of both blood and urine, and according to the clinical judgement of the investigator;

  6. Female participants of childbearing potential must be willing to comply with effective contraception up to 90 days after the study vaccine administration;

  7. Willing to comply with the study procedures.

Exclusion Criteria:
    1. Known immune deficiency; 2. Chronic airway disease; 3. Has experienced an acute illness, as determined by the investigator, or fever (>38.5°C) within 72 hours prior to study vaccine administration; in such case, the subject may be screened again after normalization of the temperature and/or healing of the illness; 4. Active hay fever or other active allergies involving the lower airways (bronchial and pulmonary); 5. Laboratory-confirmed PCR positive result for SARS-CoV-2 in nose/throat swab during screening; 6. Previous participation in a study to evaluate a non-registered COVID-19 vaccine; 7. Received any other commercial vaccine within the 28 days prior to enrolment in the study, or immunization planned within 3 months after enrolment in the study (influenza vaccines are allowed up to one week before and one week after study vaccination; Exclusion criteria CONFIDENTIAL Cohort 2: 15 μg Protein (N=10), IN Cohort 4: 5 μg Protein, 25 μg CpG (N=10), IN Cohort 6: 15 μg Protein, 25 μg CpG (N=10), IN Cohort 8: 15 μg Protein, 125 μg CpG (N=10), IN ACM-001-01 Version 2.0 09 May 2022 Page 10 of 74 DocuSign Envelope ID: C34D91C3-4686-427D-BB78-CF7178216E74 CONFIDENTIAL 8. Any confirmed severe allergic reactions (urticaria, angioedema or anaphylaxis); 9. Evidence of any other active or chronic disease (hematologic, renal, hepatic, cardiovascular, neurologic, endocrinal, gastrointestinal, oncologic, pulmonary, immunologic or psychiatric disorders) or condition that could interfere with, or for which the treatment of might interfere with the conduct of the study, or that would pose an unacceptable risk to the subject in the opinion of the investigator (following a detailed medical history, physical examination, vital signs (systolic and diastolic blood pressure, and body temperature). Minor deviations from the normal range may be accepted, if judged without clinical relevance by the Investigator; 10. Clinicallysignificantabnormalities,asjudgedbytheInvestigator,in laboratory test results (including blood chemistry, hematology and urinalysis). In the case of uncertain or questionable results, tests performed during screening may be repeated before randomization to confirm eligibility or judged to be clinically irrelevant for healthy subjects; 11. Positive hepatitis B surface antigen, hepatitis C antibody, or human immunodeficiency virus antibody at screening; 12. Asplenia; 13. Useofanychronictreatmentwithsystemiccorticosteroids(episodic treatments with topical and intranasal corticosteroids are allowed) and immunosuppressive drugs; 14. Use of paracetamol or non-steroidal anti-inflammatory drugs (NSAIDs) within 72 hours prior to vaccination; 15. Receivedbloodproducts(transfusionsorimmunoglobulins)within3 months prior to screening, or planned administration of blood products or immunoglobulins during the study; 16. History of substance use disorder (alcohol, illegal substances), current alcohol use disorder (according to Australian guidelines: https://www.health.gov.au/news/australian-alcohol-guidelines- revised) or drug abuse;
  1. Participation in an investigational drug or device study within 3 months prior to first study vaccine administration or more than 4 times a year; 18. Lossordonationofbloodover500mLwithin3months(males)or4 months (females) prior to screening or intention to donate blood or blood products during the study; 19. History of bleeding disorder (e.g., factor deficiency, coagulopathy, or platelet disorder requiring special precautions), significant bleeding or bruising following IM injections or venous punctures, or currently receiving anticoagulants; 20. Has body art (e.g., tattoos), skin lesions or abnormalities that could interfere with the observation of injection site reactions; ACM-001-01 Version 2.0 09 May 2022 Page 11 of 74

DocuSign Envelope ID: C34D91C3-4686-427D-BB78-CF7178216E74 Endpoints 21. Close contact with laboratory-confirmed COVID-19 cases within 10 days prior to vaccination, high risk of exposure or has an occupation with a high risk of exposure to SARS-CoV-2 (emergency response); 22. Pregnancy confirmed by a positive pregnancy test, lactation or intention to become pregnant during the study; 23. Any cancer diagnosed and/or treated within the past 5 years (except basal cell carcinoma of the skin and cervical carcinoma in situ); 24. Veins not suitable for repeated blood sampling; 25. Serious reaction, such as anaphylactic reaction, following primary COVID-19 vaccination; 26. Any known factor, condition, or disease that might interfere with treatment compliance, study conduct or interpretation of the results; 27. Sponsor employees or Investigator site personnel directly affiliated with this study, and their immediate families. Immediate family is defined as a spouse, parent, child or sibling, whether biological or legally adopted, including children of newly composed families.

Contacts and Locations

Locations

Site City State Country Postal Code
1 Paratus Research Central Coast Kanwal New South Wales Australia 2259
2 Paratus Research Sydney Sydney New South Wales Australia
3 Paratus research Brisbane Brisbane Queensland Australia 4010
4 Paratus research Canberra Canberra Australia ACT 2617

Sponsors and Collaborators

  • ACM Biolabs

Investigators

None specified.

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.
Responsible Party:
ACM Biolabs
ClinicalTrials.gov Identifier:
NCT05385991
Other Study ID Numbers:
  • ACM-001-01
First Posted:
May 23, 2022
Last Update Posted:
Aug 12, 2022
Last Verified:
Jul 1, 2022
Studies a U.S. FDA-regulated Drug Product:
No
Studies a U.S. FDA-regulated Device Product:
No
Additional relevant MeSH terms:

Study Results

No Results Posted as of Aug 12, 2022