ClinicalTrials.gg
WithdrawnNCT05029245PRIDEUpdated May 11, 2022

IntraDermal Versus Intramuscular Comirnaty® Efficacy Study

A Phase 3 interventional study of Comirnaty® in Covid19 Vaccine and Covid19, sponsored by Rajavithi Hospital. Withdrawn. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-05-11.

Sponsored by Rajavithi Hospital · Phase 3, Interventional, and Prevention

Why this study was withdrawn
No financial budget support
Phase
Phase 3
Study type
Interventional
Enrollment
0
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The 8-week, Prospective, Randomized controlled of IntraDermal administration of Comirnaty® 6 microgram compare to Intramuscular Comirnaty® 30 microgram by 28 days interval Efficacy Study in 4 groups of healthy volunteer ( 1 people who complete sinovac vaccination 2 people who received 1 dosage of AstraZeneca vaccine 3 naive vaccination 4 any other vaccination not in 1-3 with anti Spike antibody less than 650 AU/ ml) . Comparison of antibody level and T cell response to SAR-CoV-2 antigen in vitro after 28 day post vaccination is primary outcome and the side effect as well as infection rate in 8 weeks is secondary outcomes.

Read the detailed description

The 8-week, Prospective, Randomized controlled of IntraDermal administration of Comirnaty® 6 microgram compare to Intramuscular Comirnaty® 30 microgram by 28 days interval Efficacy Study in healthy volunteer.To compare the AntiSpike antibody, ( Anti RBD ) neutralized antibody ( if possible) of SAR-CoV-2 and T-cell response after injection with Intradermal Comirnaty® 6 microgram versus Intramuscular Comirnaty® 30 microgram by 28 days interval in healthy volunteer in various immunological background groups.1000 patients with or with out vaccinated and with our without history of previous COVID-19 infection (in various immunological background ) will be recruited and received Comirnaty® 6 microgram versus Intramuscular Comirnaty® 30 microgram by 28 days interval

Inclusion Criteria:

  1. Signed informed consent by any patient capable of giving consent, or, when the patient is not capable of giving consent, by his or her legal/authorized representatives prior to initiation of any study procedures.
  2. Men and women, ≥18 years of age at time of enrollment.
  3. Able to follow up the vaccination schedule.

Exclusion Criteria:

  1. Patient with known hypersensitivity or intolerance to Comirnaty® or Polyethylene glycol (PEG).
  2. Patient with previous receiveing mRNA vaccine ( Pfizer, Moderna or other).
  3. Pregnancy with gestational age less than 12 weeks.
  4. Patient with History of immunosuppessive drug ( oral , IV, IM ) of which discontinue less than 6 month or any immunological abnormality which impact to Antibody production and T cell function ( eg hypergammaglobulinemia, active immne deficiency).
  5. Patient with previous used of Intravenous immunoglobulin in previous 6 month
  6. Patient with history of abnormal coagulation or contraindication for intramuscular injection or intradermal injection.
  7. Patient with end stage disease or disease with life expectancy less than 2 years
  8. Patient with previous use of medication interfere with serum interferon other cytokine system or disease with cytokine abnormalities.
  9. Patient with history of abnormal platelet or platelet dysfunction, blood coagulopathy abnormality.
  10. Patient with active pulmonary tuberculosis or systemic tuberculosis, atypical non mycobacterium tuberculosis.

Primary efficacy: To compare the AntiSpike antibody, ( Anti RBD ) neutralized antibody ( if possible) of SAR-CoV-2 and T-cell response after injection with Intradermal Comirnaty® 6 microgram versus Intramuscular Comirnaty® 30 microgram by 28 days interval in healthy volunteer in various immunological background groups.

Secondary efficacy: Comparesion of infection rate in each arm.

02

Conditions studied

  • Covid19 Vaccine
  • Covid19

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03

In context

COVID-19

7,990 studies on the registry are indexed under COVID-19; 466 are open to participants now.

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Lead sponsor

Rajavithi Hospital is the lead sponsor of 46 studies on the registry; none are open to participants now.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Signed by any patient capable of giving consent, or, when the patient is not capable of giving consent, by his or her legal/authorized representatives prior to initiation of any study procedures.
  2. Men and women, ≥18 years of age at time of enrollment.
  3. Able to follow up the vaccination schedule.

Exclusion criteria

Exclusion Criteria:

  1. Patient with known or intolerance to Comirnaty® or Polyethylene glycol (PEG).
  2. Patient with previous receiveing mRNA vaccine ( Pfizer, Moderna or other).
  3. Pregnancy with gestational age less than 12 weeks.
  4. Patient with History of immunosuppessive drug ( oral , IV, IM ) of which discontinue less than 6 month or any immunological abnormality which impact to Antibody production and T cell function ( eg hypergammaglobulinemia, active immne deficiency).
  5. Patient with previous used of Intravenous immunoglobulin in previous 6 month
  6. Patient with history of abnormal coagulation or for intramuscular injection or intradermal injection.
  7. Patient with end stage disease or disease with less than 2 years
  8. Patient with previous use of medication interfere with serum interferon other cytokine system or disease with cytokine abnormalities.
  9. Patient with history of abnormal or platelet dysfunction, blood coagulopathy abnormality.
  10. Patient with active pulmonary tuberculosis or systemic tuberculosis, atypical non mycobacterium tuberculosis.
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

05

Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
0 participants (actual)

Study arms

  • Experimental
    Sinovac 2 dosage followed by Comirnaty® 6 microgram Intradermal

    Patients who had history of Coronavac vaccine 2 dosage at least 1 month before enrollment will received Intradermal Comirnaty® vaccine 6 microgram 2 dosage by 28 days interval

    Biological: Comirnaty®

  • Active comparator
    Sinovac 2 dosage followed by Comirnaty® 30 microgram Intramuscular

    Patients who had history of Coronavac vaccine 2 dosage at least 1 month before enrollment will received Intramuscular Comirnaty® vaccine 30 microgram 2 dosage by 28 days interval

    Biological: Comirnaty®

  • Experimental
    Aztrazeneca 1 dosage followed by Comirnaty® 6 microgram Intradermal

    Patients who had history of ChAdOX1 Cov-19 vaccine 1 dosage at least 1 month before enrollment will received Intradermal Comirnaty® vaccine 6 microgram 2 dosage by 28 days interval

    Biological: Comirnaty®

  • Active comparator
    Aztrazeneca 1 dosage followed by Comirnaty® 30 microgram Intramuscular

    Patients who had history of ChAdOX1 Cov-19 vaccine 1 dosage at least 1 month before enrollment will received intramuscular Comirnaty® vaccine 30 microgram 2 dosage by 28 days interval

    Biological: Comirnaty®

  • Experimental
    Naive vaccine followed by Comirnaty® 6 microgram Intradermal

    Patients who had no history SAR-CoV vaccine before enrollment will received intradermal Comirnaty® vaccine 6 microgram 2 dosage by 28 days interval

    Biological: Comirnaty®

  • Active comparator
    Naive vaccine followed by Comirnaty® 30 microgram Intramuscular

    Patients who had no history SAR-CoV vaccine before enrollment will received intramuscular Comirnaty® vaccine 30 microgram 2 dosage by 28 days interval

    Biological: Comirnaty®

  • Experimental
    Any history of vaccination with Anti-RBD< 650AU/ml followed by Comirnaty® 6 microgram Intradermal

    Patients who had history of any SAR-CoV vaccine at least 1 month before enrollment will received intradermal Comirnaty® vaccine 6 microgram 2 dosage by 28 days interval

    Biological: Comirnaty®

  • Active comparator
    Any history of vaccination with Anti-RBD <650AU/ml followed by Comirnaty® 30 microgram Intramuscular

    Patients who had history of any SAR-CoV vaccine at least 1 month before enrollment will received intramuscular Comirnaty® vaccine 30 microgram 2 dosage by 28 days interval

    Biological: Comirnaty®

Interventions

  • BiologicalComirnaty®

    intradermal injection or intramuscular injection

06

What researchers measure

Primary outcomes

  1. Level of Anti RBD antibody

    Level of Anti RBD antibody after first and second injection

    Time frame: 8 weeks

  2. Interferon gamma level

    Interferon gamma level ( production of interferon gamma Againts SAR-CoV-2 antigen in vitro after injection for 28 days

    Time frame: 8 weeks

Secondary outcomes

  1. COVID-19 infection

    COVID-19 infection rate after first and second injection

    Time frame: 8 weeks

  2. COVID-19 death

    COVID-19 death rate after first and second injection

    Time frame: 8 weeks

  3. adverse event after vaccination

    adverse event rate after first and second injection

    Time frame: 8 weeks

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 11, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05029245
Lead sponsor
Rajavithi Hospital
Collaborators
Department of Medical services
Responsible party
Dr Subsai Kongsaengdao (Associate Professor Subsai Kongsaengdao, M.D., Rajavithi Hospital) — Principal investigator
First posted
Aug 31, 2021
Start date
Aug 31, 2021 (estimated)
Primary completion
Aug 31, 2022 (estimated)
Completion
Oct 31, 2022 (estimated)
Last update
May 11, 2022

Oversight

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

Not currently enrolling

This study is withdrawn, as verified in May 2022. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: BNT162 Vaccine

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