A trial to evaluate the ability to provoke an immune response and the safety of mRNA-1273.529 (Omicron Variant) in comparison with mRNA-1273 (prototype) booster vaccine
| ISRCTN | ISRCTN99890480 |
|---|---|
| DOI | https://doi.org/10.1186/ISRCTN99890480 |
| ClinicalTrials.gov (NCT) | Nil known |
| Clinical Trials Information System (CTIS) | 2022-000063-51 |
| Integrated Research Application System (IRAS) | 1004941 |
| Protocol serial number | mRNA-1273-P305, IRAS 1004941, CPMS 51566 |
| Sponsor | ModernaTX, Inc. (USA) |
| Funder | ModernaTX, Inc |
- Submission date
- 22/01/2022
- Registration date
- 18/03/2022
- Last edited
- 01/04/2022
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Infections and Infestations
Plain English summary of protocol
Background and study aims
An outbreak of COVID-19 caused by the novel coronavirus SARS-CoV-2 has spread throughout the world. There are now a number of vaccines that have been approved to prevent COVID-19.
Vaccines serve to prepare the immune system for fighting infection and preventing illness. The immune system produces antibodies which recognise viruses and make them harmless. COVID-19 vaccines boost the immune system to produce enough antibodies against SARS-CoV-2 so in case of an infection, the virus does not cause illness. The mRNA-1273 vaccine has been approved for emergency use for prevention of COVID-19. The mRNA-1273.529 vaccine targets the omicron strain of SARS-CoV-2 and is not yet approved.
The purpose of this study is to compare the body’s immune response to a booster dose of mRNA-1273 vaccine compared to mRNA-1273.529 vaccine.
Who can participate?
Healthy people who are at least 16 years old and have already received 2 or 3 doses of an authorised or approved COVID-19 vaccine may be eligible to participate.
What does the study involve?
Participants will be randomised in a 1:1 ratio to receive either the mRNA-1273 or mRNA-1273.529 vaccine. They will remain in the study for 12 months. They will attend the clinic for visits at screening, Day 1, (Day 8), and Months 1, 3, 6 and 12. They will also have 3 or 4 safety phone calls during this time. Procedures during the visits will include physical examination, vital signs, nasopharyngeal swab, blood sampling and participants will need to complete an e-diary.
What are the possible benefits and risks of participating?
Benefits:
Taking part in this study may be of no direct benefit to participants. However, the data gathered during this study may help doctors learn more about the study vaccine and this may help others in the future.
Risks:
All vaccines can cause side effects. No studies of the mRNA-1273.529 vaccine in people are ongoing at this time. There may be similar side effects to the mRNA-1273 vaccine.
Some people experienced reactions that kept them from their usual daily activities. Most of these reactions lasted about 1 to 3 days. They mostly occurred within the first few days after vaccination and went away within a few days. These side effects were usually mild or moderate but were occasionally severe.
The most common side effects seen when the mRNA-1273 vaccine was given to adults were:
- Pain at the injection site
- Fatigue (tiredness)
- Headache
- Muscle aches or pain
- Joint aches or pain
- Chills
The most common side effects seen when the mRNA-1273 vaccine was given to adolescents were:
- Pain at the injection site
- Swelling at the injection site
- Redness at the injection site
- Fatigue (tiredness)
- Headache
- Muscle aches or pain
- Joint aches or pain
- Chills
- Gland swelling under the arm on the side of study vaccination
- Nausea/vomiting
- Fever
Where is the study run from?
St George's, University of London (UK)
When is the study starting and how long is it expected to run for?
January 2022 to March 2023
Who is funding the study?
ModernaTX, Inc. (USA)
Who is the main contact?
Dr Catherine Cosgrove, ccosgrov@sgul.ac.uk
Contact information
Principal investigator
Blackshaw Road
London
SW17 0QT
United Kingdom
 ORCID ID |
0000-0003-0295-6893 |
|---|---|
| Phone | +44 208 725 2788 |
| ccosgrov@sgul.ac.uk |
Study information
| Primary study design | Interventional |
|---|---|
| Study design | Observer-blind stratified interventional randomized controlled trial |
| Secondary study design | Randomised controlled trial |
| Study type | Participant information sheet |
| Scientific title | A phase 2/3, randomized, observer-blind, active-controlled, multicenter study to evaluate the immunogenicity and safety of mRNA-1273.529 (B.1.1.529, Omicron Variant) in comparison with mRNA-1273 (prototype) booster vaccine |
| Study objectives | - To demonstrate non-inferiority of the immune response of mRNA-1273.529 compared to mRNA-1273 booster administered as a 4th dose against the B.1.1.529 strain at Day 29 - To evaluate the safety and reactogenicity of mRNA-1273.529 and mRNA-1273 administered as a booster dose - To demonstrate the superiority of the immune response of mRNA-1273.529 compared to mRNA-1273 administered as a 4th dose against the B.1.1.529 strain at Day 29 or Month 3 - To demonstrate non-inferiority of the immune response of mRNA-1273.529 compared to mRNA-1273 booster administered as a 4th dose against theprototype strain at Day 29 - To evaluate the sero response rate (SRR) of mRNA-1273.529 and mRNA-1273 boosters administered as a 4th dose - To evaluate the immunogenicity of mRNA-1273.529 booster compared to mRNA-1273 booster administered as a 3rd dose - To evaluate the immunogenicity of mRNA-1273.529 booster compared to mRNA-1273 booster administered as a 3rd or the 4th dose study vaccine - To evaluate the immunogenicity of mRNA-1273.529 and mRNA-1273 booster at all evaluable time points after the vaccination administration |
| Ethics approval(s) | Approved 03/02/2022, Fast Track Research Ethics Committee (Health Research Authority, 2 Redman Place, Stratford, London, E20 1JQ, UK; no telephone number provided; fasttrack.rec@hra.nhs.uk), ref: 22/HRA/0060 |
| Health condition(s) or problem(s) studied | COVID-19 (SARS-CoV-2 infection) |
| Intervention | Study Arms: mRNA-1273 (Moderna COVID-19 Vaccine, Spikevax®) 50 μg (mRNA) mRNA-1273.529 (Moderna Omicron Variant Vaccine) 50 μg (mRNA) All participants will have previously received 2 or 3 doses of an authorized/approved COVID-19 vaccine. Participants who had previously received 2 doses of a COVID-19 vaccine as a primary series will receive mRNA-1273.529 or mRNA-1273 as the third dose, and participants who have previously received a primary series and 1 booster dose will receive mRNA-1273.529 or mRNA-1273 as the 4th dose. Participants who will receive the 4th dose as part of the study must have previously received a mRNA vaccine as the 3rd dose of a COVID-19 vaccine. Participants who will receive the 3rd dose as part of the study may have previously received 2 doses of a mRNA or a non-mRNA COVID-19 vaccine. Study visits: will consist of a Screening Visit (up to 28 days before the Day 1 visit), Vaccination Visit at Day 1 and subsequent study visits on Day 8 (for a subset of participants), Day 29 (Month 1), Day 85 (Month 3), Day 179 (Month 6), and Day 359 (Month 12), with up to 13 months of study participation. Unscheduled visits for potential symptoms of COVID-19 will include PCR testing. Randomisation: Randomization will be performed using an interactive response technology (IRT). Approximately 2,924 participants will be randomized in a 1:1 ratio to receive a single dose of either 50 μg of mRNA-1273.529 or 50 μg of mRNA-1273 (active control). Randomization will be stratified by age groups (16 to <65 years or ≥65 years) and number of booster doses received (to receive study vaccine as the 4th dose or to receive study vaccine as the 3rd dose). At least ≥90% of participants will receive study vaccine as the 4th dose. |
| Intervention type | Biological/Vaccine |
| Phase | Phase II/III |
| Drug / device / biological / vaccine name(s) | mRNA-1273.529, mRNA-1273 booster |
| Primary outcome measure(s) |
To demonstrate non-inferiority of the immune response of mRNA-1273.529 compared to mRNA-1273 booster administered as a 4th dose against the B.1.1.529 strain at Day 29: |
| Key secondary outcome measure(s) |
To demonstrate superiority of the immune response of mRNA-1273.529 compared to mRNA-1273 administered as a |
| Completion date | 17/03/2023 |
Eligibility
| Participant type(s) | Healthy volunteer |
|---|---|
| Age group | Mixed |
| Sex | All |
| Target sample size at registration | 2924 |
| Key inclusion criteria | 1. Male or female, at least 16 years of age at the time of consent (Screening Visit) 2. Investigator’s assessment that participant understands and is willing and physically able to comply with protocol-mandated follow-up, including all procedures 3. Participant has provided written informed consent for participation in this study, including all evaluations and procedures as specified in this protocol 4. Female participants of nonchildbearing potential may be enrolled in the study. Nonchildbearing potential is defined as bilateral tubal ligation > 1 year prior to the Screening Visit, bilateral oophorectomy, hysterectomy, or postmenopausal (defined as amenorrhea for ≥ 12 consecutive months prior to the Screening Visit without an alternative medical cause). A follicle stimulating hormone (FSH) level may be measured at the discretion of the investigator to confirm postmenopausal status 5. Female participants of childbearing potential may be enrolled in the study if the participant fulfills all the following criteria: 5.1 Has a negative pregnancy test at the Screening Visit and on the day of vaccination prior to vaccine dose being administered on Day 1. 5.2 Has practiced adequate contraception or has abstained from all activities that could result in pregnancy for at least 28 days prior to the first dose (Day 1). Adequate female contraception is defined as consistent and correct use of a local health authority approved contraceptive method in accordance with the product label. 5.3 Has agreed to continue adequate contraception through 90 days following vaccine administration 6. Has received 2 prior doses of one of the following approved/authorized COVID-19 vaccines: Moderna, Pfizer/BioNTech, Oxford/AstraZeneca, Janssen. A heterologous vaccine regimen is acceptable 7. Participants who will receive the 4th dose as part of the study must have previously received a mRNA vaccine (Moderna or Pfizer/BioNTech) as the 3rd dose of a COVID-19 vaccine. Participants who will receive the 3rd dose as part of the study may have previously received 2 doses of an approved/authorized mRNA or a non-mRNA COVID-19 vaccine (a heterologous vaccine regimen is acceptable). |
| Key exclusion criteria | 1. Had significant exposure to someone with SARS-CoV-2 infection or COVID-19 in the past 14 days, as defined by the CDC as a close contact (without PPE) of someone who has had COVID 19. 2. Participant is acutely ill or febrile (temperature ≥ 38.0°C/100.4°F) 72 hours prior to or at the Screening Visit or Day 1. Participants meeting this criterion may be rescheduled within the 28-day screening window and will retain their initially assigned participant number. 3. Had tested positive for SARS-CoV-2 by approved/authorized lateral flow/rapid antigen or PCR test on 08 November 2021 or later. 4. Has received a COVID-19 vaccine within 3 months of the Screening Visit. 5. Has received a total of 4 doses or more of COVID-19 vaccine. 6. Has received a COVID-19 vaccine at a dose different from the authorized/approved dose. 7. History of a diagnosis or condition that, in the judgment of the Investigator, is clinically unstable or may affect participant safety, assessment of safety endpoints, assessment of immune response, or adherence to study procedures. Clinically unstable is defined as a diagnosis or condition requiring significant changes in management or medication within the 2 months prior to screening and includes ongoing workup of an undiagnosed illness that could lead to a new diagnosis or condition. 8. Reported history of congenital or acquired immunodeficiency, immunosuppressive condition, or immune-mediated disease requiring immunosuppressive treatment or other immunosuppressive condition. 9. Dermatologic conditions that could affect local solicited AR assessments (eg, tattoos, psoriasis patches affecting skin over the deltoid areas). 10. Reported history of anaphylaxis or severe hypersensitivity reaction after receipt of any components of mRNA vaccine. 11. Reported history of bleeding disorder that is considered a contraindication to intramuscular (IM) injection or phlebotomy. 12. Any medical, psychiatric, or occupational condition, including reported history of substance abuse, that, in the opinion of the Investigator, might pose additional risk due to participation in the study or could interfere with the interpretation of study results. Asymptomatic conditions and conditions with no evidence of end organ involvement (eg, mild hypertension, dyslipidemia) are not exclusionary, provided that they are being appropriately managed and are clinically stable (ie, unlikely to result in symptomatic illness within the time course of this study). Illnesses or conditions may be exclusionary, even if otherwise stable, due to therapies used to treat them (eg, immune modifying treatments), at the discretion of the Investigator. 13. Has received systemic immunosuppressants or immune-modifying drugs for > 14 days in total within 181 days prior to screening (for corticosteroids ≥ 10 mg/day of prednisone equivalent) or is anticipating the need for immunosuppressive treatment at any time during participation in the study. 14. Has received or plans to receive any licensed vaccine ≤ 28 days prior to the study injection (Day 1) or plans to receive a licensed vaccine within 28 days after the study injection (with the exception that approved seasonal influenza vaccine may be received by at least 7 and preferably 14 days apart from the study injection). 15. Has received systemic immunoglobulins or blood products within 90 days prior to the Screening Visit or plans to receive during the study. 16. Diagnosis of malignancy within previous 10 years (excluding nonmelanoma skin cancer). 17. Has donated ≥ 450 mL of blood products within 28 days prior to the Screening Visit or plans to donate blood products during the study. 18. Has participated in an interventional clinical study within 28 days prior to the Screening Visit based on the medical history interview or plans to do so while participating in this study. 19. Is an immediate family member or household member of study personnel, study site staff, or Sponsor personnel. |
| Date of first enrolment | 16/02/2022 |
| Date of final enrolment | 30/04/2023 |
Locations
Countries of recruitment
- United Kingdom
- England
Study participating centres
Eccles
Salford
M6 8HD
United Kingdom
London
NW1 2PG
United Kingdom
Cottingham
HU16 5JX
United Kingdom
Bath
BA1 3NG
United Kingdom
Gloucester
GL1 3NN
United Kingdom
Truro
TR1 3LJ
United Kingdom
Newcastle upon Tyne
TS1 4LP
United Kingdom
369 Fulham Road
London
SW10 9NH
United Kingdom
Pond Street
London
NW3 2QG
United Kingdom
Bradford
BD9 6RJ
United Kingdom
Aberdeen
AB25 2ZN
United Kingdom
De Crespigny Park
Denmark Hill
London
SE5 8AB
United Kingdom
23 Pounds Gate
Queen Street
Portsmouth
PO1 3HN
United Kingdom
C Floor, Huntsmnan Building
Herries Road
Sheffield
S5 7AU
United Kingdom
Yarwell Road
Wansford
Peterborough
PE8 6PL
United Kingdom
Barrack Road
Exeter
EX2 5DW
United Kingdom
Derriford
Plymouth
PL6 8DH
United Kingdom
London
SW17 0QT
United Kingdom
Results and Publications
| Individual participant data (IPD) Intention to share | Yes |
|---|---|
| IPD sharing plan summary | Available on request |
| IPD sharing plan | The sponsor is committed to responsible sharing of clinical data with the goal of advancing medical science and improving patient care. Independent researchers will be permitted to use anonymised data collected from participants during this study to conduct additional scientific research, which may be unrelated to the study vaccine. The data provided to external researchers will not include identifiable information. |
Study outputs
| Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
|---|---|---|---|---|---|
| Participant information sheet | Participant information sheet | 11/11/2025 | 11/11/2025 | No | Yes |
| Study website | Study website | 11/11/2025 | 11/11/2025 | No | Yes |
Editorial Notes
01/04/2022: added CPMS number to Protocol /serial number field.
23/02/2022: ISRCTN received notification of combined HRA/MHRA approval for this trial on 05/02/2022
24/01/2022: Trial's existence confirmed by NHS HRA.
