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    Clinical Trial Results:
    Immunological Responses after Vaccination for COVID-19 with the mRNA Vaccine Comirnaty in Immunosuppressed and Immunocompetent Individuals. An open, non-randomized , phase IV multicenter study

    Summary
    EudraCT number
    2021-000175-37
    Trial protocol
    SE  
    Global end of trial date
    08 May 2024

    Results information
    Results version number
    v1(current)
    This version publication date
    13 Jul 2025
    First version publication date
    13 Jul 2025
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    2021-000175-37
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT04780659
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Karolinska University Hospital
    Sponsor organisation address
    Hälsovägen 13, Huddinge, Sweden, 141 57
    Public contact
    Sponsor representative, Soo Aleman, Karolinska University Hospital, +46 72595 7225, soo.aleman@regionstockholm.se
    Scientific contact
    Sponsor representative, Soo Aleman, Karolinska University Hospital, +46 72595 7225, soo.aleman@regionstockholm.se
    Paediatric regulatory details
    Is trial part of an agreed paediatric investigation plan (PIP)
    No
    Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial?
    No
    Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial?
    No
    Results analysis stage
    Analysis stage
    Final
    Date of interim/final analysis
    15 Oct 2021
    Is this the analysis of the primary completion data?
    Yes
    Primary completion date
    15 Oct 2021
    Global end of trial reached?
    Yes
    Global end of trial date
    08 May 2024
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    The primary objective was to investigate immunological efficacy of Comirnaty, by measuring the incidence of seroconversion (development of antibodies against SARS-CoV-2 upon vaccination in seronegative individuals) after 2 vaccine doses.
    Protection of trial subjects
    The study was conducted in compliance with the protocol, regulatory requirements, good clinical practice (GCP) and the ethical principles of the latest revision of the Declaration of Helsinki as adopted by the World Medical Association.
    Background therapy
    Concomitant medications not mentioned in the exclusion criteria were permitted. Ongoing drug treatments for the underlying disease, and recently completed immunosuppressive therapy (i.e., within 4 weeks prior to inclusion) were recorded at the screening visit. Ongoing immunosuppressive treatments were categorized as either steroid or non-steroidal treatments. All newly initiated medications from the day of vaccination to 14 days after each vaccine dose were registered (i.e., following both vaccine dose 1 and dose 2). The rationale for this time frame was to enable assessment of potential causality between observed adverse events and either study drugs or concomitant medications during the AE observation period. Although no formal interaction studies had been performed in previous clinical trials, no drug interactions between the study drug and other medications were expected. Subjects scheduled to receive any other vaccination were already excluded per the exclusion criteria. However, newly initiated immunosuppressive or immunoglobulin treatments after Day 0 (screening) were recorded, as these could influence vaccine efficacy. Any concomitant use of other medications was documented in the Case Report Form (CRF).
    Evidence for comparator
    -
    Actual start date of recruitment
    18 Feb 2021
    Long term follow-up planned
    No
    Independent data monitoring committee (IDMC) involvement?
    No
    Population of trial subjects
    Number of subjects enrolled per country
    Country: Number of subjects enrolled
    Sweden: 539
    Worldwide total number of subjects
    539
    EEA total number of subjects
    539
    Number of subjects enrolled per age group
    In utero
    0
    Preterm newborn - gestational age < 37 wk
    0
    Newborns (0-27 days)
    0
    Infants and toddlers (28 days-23 months)
    0
    Children (2-11 years)
    0
    Adolescents (12-17 years)
    0
    Adults (18-64 years)
    208
    From 65 to 84 years
    331
    85 years and over
    0

    Subject disposition

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    Recruitment
    Recruitment details
    -

    Pre-assignment
    Screening details
    781 participants were screened for the study at at Karolinska University Hospital between February 12th and 22nd, 2021 and 539 were included and recived the first vaccin dose. The main reasons for screening failure were previous COVID-19 infection, patient refusal, and that some study subjects already had been vaccinated outside the study.

    Period 1
    Period 1 title
    Intervention period (overall period)
    Is this the baseline period?
    Yes
    Allocation method
    Non-randomised - controlled
    Blinding used
    Not blinded

    Arms
    Are arms mutually exclusive
    Yes

    Arm title
    All immunocompromised patients
    Arm description
    This arm consists of five different primary immunodeficiency disorders; (n=90) HIV: human immunodeficiency virus, (n=90) HSCT: hematopoietic stem cell transplantation, (n=90) CLL: chronic lymphocytic leukemia,(n=89) SOT: solid organ transplantation. The different transplants in the SOT-grou were: n=57 liver, n=26 kidney, n=6 kidney and pancreas.
    Arm type
    Experimental

    Investigational medicinal product name
    Comirnaty
    Investigational medicinal product code
    J07BX03
    Other name
    Pharmaceutical forms
    Concentrate for solution for injection
    Routes of administration
    Intramuscular use
    Dosage and administration details
    Comirnaty is administered intramuscularly after dilution with sodium chloride as a vaccination series consisting of 2 doses (0.3 ml each) at least 21 days apart. One dose contains 30 micrograms of mRNA vaccine.

    Arm title
    Controls
    Arm description
    The control group consisted of individuals without a primary immunodeficiency disorder. The group was stratified by age: 18–39 years (n=30), 40–59 years (n=30), and ≥60 years (n=30).
    Arm type
    Active comparator

    Investigational medicinal product name
    Comirnaty
    Investigational medicinal product code
    J07BX03
    Other name
    Pharmaceutical forms
    Concentrate for solution for injection
    Routes of administration
    Intramuscular use
    Dosage and administration details
    Comirnaty is administered intramuscularly after dilution with sodium chloride as a vaccination series consisting of 2 doses (0.3 ml each) at least 21 days apart. One dose contains 30 micrograms of mRNA vaccine.

    Number of subjects in period 1
    All immunocompromised patients Controls
    Started
    449
    90
    Completed
    439
    90
    Not completed
    10
    0
         Adverse event, serious fatal
    3
    -
         Consent withdrawn by subject
    3
    -
         Physician decision
    1
    -
         Leukemia relapse (more than 6 weeks after dose 2)
    1
    -
         Died in original disease
    2
    -

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    All immunocompromised patients
    Reporting group description
    This arm consists of five different primary immunodeficiency disorders; (n=90) HIV: human immunodeficiency virus, (n=90) HSCT: hematopoietic stem cell transplantation, (n=90) CLL: chronic lymphocytic leukemia,(n=89) SOT: solid organ transplantation. The different transplants in the SOT-grou were: n=57 liver, n=26 kidney, n=6 kidney and pancreas.

    Reporting group title
    Controls
    Reporting group description
    The control group consisted of individuals without a primary immunodeficiency disorder. The group was stratified by age: 18–39 years (n=30), 40–59 years (n=30), and ≥60 years (n=30).

    Reporting group values
    All immunocompromised patients Controls Total
    Number of subjects
    449 90 539
    Age categorical
    Units: Subjects
        <65 years
    268 63 331
        18-65 years
    181 27 208
    Gender categorical
    Units: Subjects
        Female
    242 51 293
        Male
    207 39 246
    Ongoing immunosuppression
    Ongoing immunosuppression at baseline
    Units: Subjects
        Corticosteroids
    26 0 26
        Other immunosuppressive agents
    159 0 159
        No ongoing immunosuppression at baseline
    264 90 354
    Laboratory parameters at baseline
    Units: IgG (g/L)
        median (full range (min-max))
    9.9 (1.0 to 34.4) 11.0 (7.2 to 21.2) -
    Laboratory parameters at baseline, Absolute lymphocyte count (x109/L)
    Controls n=87, Immunocompromised n=446
    Units: x109/L
        median (full range (min-max))
    1.6 (0.2 to 112.6) 1.8 (1.0 to 4.1) -

    End points

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    End points reporting groups
    Reporting group title
    All immunocompromised patients
    Reporting group description
    This arm consists of five different primary immunodeficiency disorders; (n=90) HIV: human immunodeficiency virus, (n=90) HSCT: hematopoietic stem cell transplantation, (n=90) CLL: chronic lymphocytic leukemia,(n=89) SOT: solid organ transplantation. The different transplants in the SOT-grou were: n=57 liver, n=26 kidney, n=6 kidney and pancreas.

    Reporting group title
    Controls
    Reporting group description
    The control group consisted of individuals without a primary immunodeficiency disorder. The group was stratified by age: 18–39 years (n=30), 40–59 years (n=30), and ≥60 years (n=30).

    Primary: Proportion (95% CI) that seroconverts to positive response to SARS-CoV-2 IgG serology specimen after two doses of vaccine

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    End point title
    Proportion (95% CI) that seroconverts to positive response to SARS-CoV-2 IgG serology specimen after two doses of vaccine
    End point description
    End point type
    Primary
    End point timeframe
    Measured 2 weeks after second vaccine dose
    End point values
    All immunocompromised patients Controls
    Number of subjects analysed
    388
    78
    Units: Proportion
        Seroconverted
    280
    78
        Seronegative
    108
    0
    Statistical analysis title
    Comparison of seroconversion between cohorts
    Comparison groups
    All immunocompromised patients v Controls
    Number of subjects included in analysis
    466
    Analysis specification
    Pre-specified
    Analysis type
    other
    P-value
    < 0.05
    Method
    Fisher exact
    Confidence interval

    Secondary: Proportion (95% CI) who experience adverse events, with AE/SAE/SUSAR (after dose 2)

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    End point title
    Proportion (95% CI) who experience adverse events, with AE/SAE/SUSAR (after dose 2)
    End point description
    The endpoint was assessed descriptively; no statistical testing was conducted to compare the cohorts.
    End point type
    Secondary
    End point timeframe
    During the intervention period
    End point values
    All immunocompromised patients Controls
    Number of subjects analysed
    446
    88
    Units: Proportion
        AE
    87
    5
        SAE
    13
    0
        SUSAR
    0
    0
        No AE/SAE/SUSAR
    346
    83
    No statistical analyses for this end point

    Secondary: Number and proportion (95% CI) who experience local and systemic reactions (after dose 1)

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    End point title
    Number and proportion (95% CI) who experience local and systemic reactions (after dose 1)
    End point description
    End point type
    Secondary
    End point timeframe
    During the study period
    End point values
    All immunocompromised patients Controls
    Number of subjects analysed
    444
    89
    Units: Proportion
        Any reaction (grade 1 – 4)
    378
    71
        No reaction
    66
    18
    Statistical analysis title
    Comparison of reactions between cohorts
    Comparison groups
    All immunocompromised patients v Controls
    Number of subjects included in analysis
    533
    Analysis specification
    Pre-specified
    Analysis type
    other
    P-value
    < 0.05
    Method
    Chi-squared
    Confidence interval

    Secondary: Proportion (95% CI) diagnosed with a new SARS-CoV-2 infection confirmed by a positive PCR test

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    End point title
    Proportion (95% CI) diagnosed with a new SARS-CoV-2 infection confirmed by a positive PCR test
    End point description
    The endpoint was assessed descriptively; no statistical testing was conducted to compare the cohorts.
    End point type
    Secondary
    End point timeframe
    During the study period
    End point values
    All immunocompromised patients Controls
    Number of subjects analysed
    388
    78
    Units: Proportion
        Yes
    18
    2
        No
    370
    76
    No statistical analyses for this end point

    Secondary: Proportion (95% CI) who experience adverse events, with AE/SAE/SUSAR (after dose 1)

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    End point title
    Proportion (95% CI) who experience adverse events, with AE/SAE/SUSAR (after dose 1)
    End point description
    The endpoint was assessed descriptively; no statistical testing was conducted to compare the cohorts.
    End point type
    Secondary
    End point timeframe
    During the study
    End point values
    All immunocompromised patients Controls
    Number of subjects analysed
    449
    90
    Units: Proportion
        AE
    94
    6
        SAE
    10
    0
        SUSAR
    1
    0
        No AE/SAE/SUSAR
    344
    84
    No statistical analyses for this end point

    Secondary: Number and proportion (95% CI) who experience local and systemic reactions (after dose 2)

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    End point title
    Number and proportion (95% CI) who experience local and systemic reactions (after dose 2)
    End point description
    End point type
    Secondary
    End point timeframe
    During the intervention period
    End point values
    All immunocompromised patients Controls
    Number of subjects analysed
    422
    87
    Units: Proportion
        Any reaction (grade 1 – 4)
    337
    74
        No reaction
    85
    13
    Statistical analysis title
    Comparisson of reactions between the cohorts
    Comparison groups
    All immunocompromised patients v Controls
    Number of subjects included in analysis
    509
    Analysis specification
    Pre-specified
    Analysis type
    other
    P-value
    < 0.05
    Method
    Chi-squared
    Confidence interval

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    Adverse events (AEs) were recorded from the time of inclusion until visit 4, which occurred two weeks after administration of the second vaccine dose. Serious Adverse events (SAE) were documented up to visit 5, six weeks after the second vaccine dose.
    Adverse event reporting additional description
    A total of 273 adverse events (AEs), 30 serious adverse events (SAEs) and one SUSAR were reported in the immunosuppressed group. In the control group, 11 AEs were reported, with no SAEs or SUSAR.
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    CTCAE
    Dictionary version
    5.0
    Reporting groups
    Reporting group title
    All immunocompromised patients
    Reporting group description
    -

    Reporting group title
    Controlls
    Reporting group description
    -

    Serious adverse events
    All immunocompromised patients Controlls
    Total subjects affected by serious adverse events
         subjects affected / exposed
    23 / 449 (5.12%)
    0 / 90 (0.00%)
         number of deaths (all causes)
    5
    0
         number of deaths resulting from adverse events
    3
    0
    Investigations
    Increased CRP
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Cardiac disorders
    Myocardial infarction
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Atrial fibrillation
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Heard failure
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 2
    0 / 0
         deaths causally related to treatment / all
    0 / 1
    0 / 0
    Surgical and medical procedures
    Surgery for colon carcinoma
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Nervous system disorders
    Syncope
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    2 / 2
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    General disorders and administration site conditions
    Organ rejection
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Gastrointestinal disorders
    Ileus
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Pancreatitis
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 1
    0 / 0
    Abdominal pain
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Hepatobiliary disorders
    Alanine aminotransferase increase/aspartate aminotransferase increase
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Respiratory, thoracic and mediastinal disorders
    Pneumonitis
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    2 / 2
    0 / 0
         deaths causally related to treatment / all
    1 / 1
    0 / 0
    Renal and urinary disorders
    Urinary tract obstruction
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 2
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Musculoskeletal and connective tissue disorders
    Back pain
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Infections and infestations
    COVID-19
         subjects affected / exposed
    3 / 449 (0.67%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 3
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Bone infection
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Urinary tract infection
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Sepsis
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 3
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Sinusitis
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Catheter related infection
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Metabolism and nutrition disorders
    Dehydration
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Hyperglycemia
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 0%
    Non-serious adverse events
    All immunocompromised patients Controlls
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    173 / 449 (38.53%)
    11 / 90 (12.22%)
    Vascular disorders
    Hypertension
         subjects affected / exposed
    13 / 449 (2.90%)
    0 / 90 (0.00%)
         occurrences all number
    13
    0
    Superficial thrombophlebitis
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Hematoma
         subjects affected / exposed
    3 / 449 (0.67%)
    0 / 90 (0.00%)
         occurrences all number
    3
    0
    Surgical and medical procedures
    Lymph node punction
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    General disorders and administration site conditions
    Increase thirst
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Localized edema
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Injection site reaction
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Flu like symptoms
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Fever
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Vaccination site lymphadenopathy
         subjects affected / exposed
    6 / 449 (1.34%)
    1 / 90 (1.11%)
         occurrences all number
    6
    1
    Chest pain
         subjects affected / exposed
    3 / 449 (0.67%)
    0 / 90 (0.00%)
         occurrences all number
    3
    0
    Fatigue
         subjects affected / exposed
    10 / 449 (2.23%)
    3 / 90 (3.33%)
         occurrences all number
    10
    3
    Reproductive system and breast disorders
    Vaginal dryness
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Breast pain
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Respiratory, thoracic and mediastinal disorders
    Dyspnea
         subjects affected / exposed
    4 / 449 (0.89%)
    0 / 90 (0.00%)
         occurrences all number
    4
    0
    Hoarseness
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Unpleasantness while breathing
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Rhinorrhea
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Tachypnea
         subjects affected / exposed
    6 / 449 (1.34%)
    0 / 90 (0.00%)
         occurrences all number
    6
    0
    Allergic rhinitis
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Development of bronchiolitis
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Epistaxis
         subjects affected / exposed
    3 / 449 (0.67%)
    0 / 90 (0.00%)
         occurrences all number
    3
    0
    Cough
         subjects affected / exposed
    3 / 449 (0.67%)
    0 / 90 (0.00%)
         occurrences all number
    3
    0
    Psychiatric disorders
    Insomnia
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Confusion
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Nightmares
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Investigations
    Lymphocyte count decreased
         subjects affected / exposed
    4 / 449 (0.89%)
    0 / 90 (0.00%)
         occurrences all number
    4
    0
    Cholesterol high
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Leukopenia
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Platelet count decreased
         subjects affected / exposed
    17 / 449 (3.79%)
    0 / 90 (0.00%)
         occurrences all number
    17
    0
    Pancytopenia
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Monocyte count increased
         subjects affected / exposed
    6 / 449 (1.34%)
    0 / 90 (0.00%)
         occurrences all number
    6
    0
    Neutrophil count deceased
         subjects affected / exposed
    5 / 449 (1.11%)
    0 / 90 (0.00%)
         occurrences all number
    5
    0
    Increased lymphocyte count
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Creatinine increased
         subjects affected / exposed
    17 / 449 (3.79%)
    2 / 90 (2.22%)
         occurrences all number
    17
    2
    Blood bilirubin increased
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Cardiac disorders
    Tachycardia
         subjects affected / exposed
    4 / 449 (0.89%)
    0 / 90 (0.00%)
         occurrences all number
    4
    0
    Nervous system disorders
    Vasovagal reaction
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Migraine
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Headache
         subjects affected / exposed
    6 / 449 (1.34%)
    0 / 90 (0.00%)
         occurrences all number
    6
    0
    Memory impairment
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Dizziness
         subjects affected / exposed
    3 / 449 (0.67%)
    0 / 90 (0.00%)
         occurrences all number
    3
    0
    Blood and lymphatic system disorders
    Increased neutrophil count
         subjects affected / exposed
    3 / 449 (0.67%)
    0 / 90 (0.00%)
         occurrences all number
    3
    0
    Leukocytosis
         subjects affected / exposed
    4 / 449 (0.89%)
    0 / 90 (0.00%)
         occurrences all number
    4
    0
    Anemia
         subjects affected / exposed
    7 / 449 (1.56%)
    0 / 90 (0.00%)
         occurrences all number
    7
    0
    Ear and labyrinth disorders
    External otitis
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Tinnitus
         subjects affected / exposed
    1 / 449 (0.22%)
    1 / 90 (1.11%)
         occurrences all number
    1
    1
    Eye disorders
    GVHD in eye
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Gastrointestinal disorders
    Rectal hemorrhage
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Gastritis
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Dysphagia
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Dry mouth
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Diarrhea
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Abdominal pain
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Vomiting
         subjects affected / exposed
    4 / 449 (0.89%)
    0 / 90 (0.00%)
         occurrences all number
    4
    0
    Mucositis
         subjects affected / exposed
    4 / 449 (0.89%)
    0 / 90 (0.00%)
         occurrences all number
    5
    0
    Hepatobiliary disorders
    Increased LFTs
         subjects affected / exposed
    9 / 449 (2.00%)
    0 / 90 (0.00%)
         occurrences all number
    9
    0
    Increased AST/ALT
         subjects affected / exposed
    11 / 449 (2.45%)
    0 / 90 (0.00%)
         occurrences all number
    11
    0
    Skin and subcutaneous tissue disorders
    Pruritus
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Hyperhidrosis
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Skin rash
         subjects affected / exposed
    4 / 449 (0.89%)
    0 / 90 (0.00%)
         occurrences all number
    4
    0
    Skin ulceration
         subjects affected / exposed
    1 / 449 (0.22%)
    1 / 90 (1.11%)
         occurrences all number
    1
    1
    GVHD
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Endocrine disorders
    Enlarged thyroid gland
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Musculoskeletal and connective tissue disorders
    Pain in extremity
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Neck pain
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Myalgia
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Muscle cramp
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Traumatic knee injury
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Tendititis
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Back pain
         subjects affected / exposed
    3 / 449 (0.67%)
    0 / 90 (0.00%)
         occurrences all number
    3
    0
    Arthralgia
         subjects affected / exposed
    2 / 449 (0.45%)
    1 / 90 (1.11%)
         occurrences all number
    2
    1
    Infections and infestations
    Covid-19
         subjects affected / exposed
    4 / 449 (0.89%)
    2 / 90 (2.22%)
         occurrences all number
    4
    2
    Shingles
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    BK-viremia
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Bronchiolitis obliterans
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Conjunctivitis
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Bacterial infection
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Urinary tract infection
         subjects affected / exposed
    6 / 449 (1.34%)
    0 / 90 (0.00%)
         occurrences all number
    6
    0
    Upper respiratory infection
         subjects affected / exposed
    21 / 449 (4.68%)
    0 / 90 (0.00%)
         occurrences all number
    22
    0
    Sinusitis
         subjects affected / exposed
    3 / 449 (0.67%)
    0 / 90 (0.00%)
         occurrences all number
    3
    0
    Strongyloides infection
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Bacterial infection UNS
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Herpes simplex reactivation
         subjects affected / exposed
    3 / 449 (0.67%)
    0 / 90 (0.00%)
         occurrences all number
    3
    0
    Cytomegalovirus infection reactivation
         subjects affected / exposed
    2 / 449 (0.45%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0
    Metabolism and nutrition disorders
    Hypercalcemia
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Hyperuricemia
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    1
    0
    Hyperglycemia
         subjects affected / exposed
    1 / 449 (0.22%)
    0 / 90 (0.00%)
         occurrences all number
    2
    0

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    02 Dec 2021
    The study was extended to include blood sample collection at 12, 18, 20, and 24 months after the second vaccine dose, a modification of the total blood sample volume, and a change of sponsor representative. A new version of the informed consent form and study protocol was implemented accordingly.
    10 Jul 2023
    The study was further extended to include sample collection at 30 to 36 months post-second vaccine dose. A new version of the informed consent form and study protocol was implemented accordingly.

    Interruptions (globally)

    Were there any global interruptions to the trial? No

    Limitations and caveats

    Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data.
    None reported
    For support, Contact us.
    The status and protocol content of GB trials is no longer updated since 1 January 2021. For the UK, as of 31 January 2021, EU Law applies only to the territory of Northern Ireland (NI) to the extent foreseen in the Protocol on Ireland/NI. Legal notice
    As of 31 January 2023, all EU/EEA initial clinical trial applications must be submitted through CTIS . Updated EudraCT trials information and information on PIP/Art 46 trials conducted exclusively in third countries continues to be submitted through EudraCT and published on this website.

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