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CompletedNCT05546502Updated Jun 3, 2025

Safety and Immunogenicity of SARS-CoV-2 Protein Subunit Recombinant Vaccine in Healthy Children

A Phase 3 interventional study of SARS-CoV-2 Protein Subunit Recombinant Vaccine and Active Comparator in Vaccine Reaction and Vaccine Adverse Reaction, sponsored by PT Bio Farma. Completed at 10 sites in Indonesia. Open to participants aged 12 Years to 17 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-06-03.

Sponsored by PT Bio Farma · Phase 3, Interventional, and Prevention

Phase
Phase 3
Study type
Interventional
Enrollment
1,050
Allocation
Randomized
Ages
12 Years to 17 Years
Sex
All
01

Study summary

A Phase III, Observer-blind, randomized, active-controlled prospective intervention study

Read the detailed description

This trial is randomized, prospective intervention study. A total of 1,050 subjects aged 12-17 years (COVID-19 vaccine naive) who are willing to participate in the study by signing the consent form, will be involved in this trial.

The subjects will be divided into twostudy subsets, namely Main Study and Exploratory Study.

Main Study for immunogenicity and safety evaluation.

Exploratory Study for cellular immunity evaluation,

02

Conditions studied

  • Vaccine Reaction
  • Vaccine Adverse Reaction
03

In context

Lead sponsor

PT Bio Farma is the lead sponsor of 44 studies on the registry; 5 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
12 Years to 17 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  1. Clinically healthy children aged 12-17 years.
  2. Parent and/or legal guardian has been informed properly regarding the study and signed the informed consent form (and assent for subjects aged 12-17 years).
  3. Parent and/or legal guardian will commit to comply with the instructions of the investigator and the schedule of the trial.

Exclusion criteria

Exclusion Criteria:

  1. Subjects concomitantly enrolled or scheduled to be enrolled in another trial.
  2. History of vaccination with any COVID-19 vaccine (based on anamnesis).
  3. Subjects who have history of COVID-19 in the last 3 months (based on anamnesis).
  4. Evolving mild, moderate or severe illness, especially infectious disease or fever (body temperature ≥37.5℃, measured with infrared thermometer/thermal gun).
  5. History of asthma, history of allergy to vaccines or vaccine ingredients, and severe adverse reactions to vaccines, such as urticaria, dyspnea, and angioneurotic edema.
  6. History of uncontrolled coagulopathy or blood disorders contraindicating intramuscular injection.
  7. Patients with serious chronic diseases (serious cardiovascular diseases, uncontrolled hypertension and diabetes, liver and kidney diseases, malignant tumors, etc) which according to the investigator might interfere with the assessment of the trial objectives.
  8. Subjects who have any history of confirmed or suspected immunosuppressive or immunodeficient state, or received in the previous 4 weeks a treatment likely to alter the immune response (intravenous immunoglobulins, blood-derived products or long-term corticosteroid therapy (> 2 weeks)).
  9. Subjects who have history of uncontrolled epilepsy or other progressive neurological disorders, such as Guillain-Barre Syndrome.
  10. Subjects receive any vaccination (other than COVID-19 vaccine) within 1 month before and after IP immunization.
  11. Female who are pregnant or planning to become pregnant during the study period (judged by self-report of subjects and urine pregnancy test results).
  1. Subjects plan to move from the study area before the end of study period.
05

Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
1,050 participants (actual)

Study arms

  • Experimental
    COVID-19 Protein Subunit Recombinant Vaccine

    2 doses of COVID-19 Protein Subunit Recombinant Vaccine administered with 28 days interval (0.5 mL per dose)

    Biological: SARS-CoV-2 Protein Subunit Recombinant Vaccine

  • Active comparator
    Active Comparator

    2 doses of Covovax® - administered with 28 days interval (0.5 mL per dose)

    Biological: Active Comparator

Interventions

  • BiologicalSARS-CoV-2 Protein Subunit Recombinant Vaccine

    SARS-CoV-2 RBD subunit recombinant protein, manufactured by PT. Bio Farma

  • BiologicalActive Comparator

    Covovax

06

What researchers measure

Primary outcomes

  1. To evaluate immunogenic non-inferiority immune response of SARS-CoV-2 neutralizing antibody of Bio Farma vaccine compared to vaccine control at 14 days after primary series

    Geometric Mean Titer (GMT) and GMT ratio of neutralizing antibody to the SARS-CoV-2, measured by neutralization assay (against omicron variant) at 14 days after primary series

    Time frame: 14 days after primary series

Secondary outcomes

  1. To evaluate SARS-CoV-2 (RBD)-binding IgG antibody titer before and 14 days after primary series of Bio Farma vaccine.

    Seroconversion rate and Seropositive rate of neutralizing antibody at baseline and 14 days after primary series vaccination.

    Time frame: 14 days after primary series

  2. To evaluate safety of SARS-CoV-2 Protein Subunit Recombinant Vaccine (Bio Farma).

    Local reactions and systemic events

    Time frame: 28 days after each dose

  3. To evaluate safety of SARS-CoV-2 Protein Subunit Recombinant Vaccine (Bio Farma).

    Serious Adverse Event

    Time frame: 12 months after primary series

  4. To compare safety between SARS-CoV-2 protein subunit recombinant vaccine (Bio Farma) and control group.

    local reactions, systemic events

    Time frame: 28 days after each dose

  5. To compare immunogenicity between SARS-CoV-2 protein subunit recombinant vaccine (Bio Farma) and control group.

    SARS-CoV-2 (RBD)-binding IgG antibody titer, neutralizing antibody

    Time frame: 28 days after each dose

  6. To evaluate antibody persistence 3, 6 and 12 months after primary series

    SARS-CoV-2 (RBD)-binding IgG antibody titer, neutralizing antibody

    Time frame: 3, 6 and 12 months after primary series

07

Study locations

10 sites
  • Bali Mandara Hospital
    Denpasar, Bali, Indonesia
  • Universitas Udayana Hospital
    Denpasar, Bali, Indonesia
  • RSUD Hj. Anna Lasmanah
    Banjarnegara, Central Java, Indonesia
  • Abdoel Moeloek Hospital
    Bandar Lampung, Lampung, Indonesia
  • Rumpin Primary Health Care
    Bogor, West Java, Indonesia
  • Duren Seribu Primary Health Care
    Depok, West Java, Indonesia
  • Pasir Putih Primary Health Care
    Depok, West Java, Indonesia
  • Universitas Mataram Hospital
    Mataram, West Nusa Tenggara, Indonesia
  • M Djamil Hospital
    Padang, West Sumatra, Indonesia
  • RS Universitas Andalas
    Padang, West Sumatra, Indonesia
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 3, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05546502
Lead sponsor
PT Bio Farma
Collaborators
Center for Child Health Universitas Gadjah Mada (CCH-PRO UGM, Cipto Mangunkusumo Hospital/Department of Child Health, Faculty of Medicine, University of Indonesia, Jakarta, Faculty of Medicine, Andalas University
Responsible party
Sponsor
First posted
Sep 19, 2022
Start date
Oct 9, 2022
Primary completion
Dec 31, 2023
Completion
Jan 31, 2024
Last update
Jun 3, 2025

Study contacts

Cahya Satria, MD
principal investigator · CC PRO UGM
Bernie Medise, MD
principal investigator · Fakultas Kedokteran Universitas Indonesia
Asrawati Asrawati, MD
principal investigator · Faculty of Medicine Universitas Andalas

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jun 2025. You cannot join it, but the record below documents what was studied.

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