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    Clinical Trial Results:
    A Phase 3b, Multi-center, Randomized, Double-blind, Placebo-controlled, Parallel-group Trial with an Open-label Extension Phase to Evaluate the Efficacy and Safety of Avatrombopag for the Treatment of Thrombocytopenia in Pediatric Subjects with Immune Thrombocytopenia for ≥6 Months

    Summary
    EudraCT number
    2020-003232-24
    Trial protocol
    FR   HU   DE   PL  
    Global end of trial date
    28 Oct 2025

    Results information
    Results version number
    v2(current)
    This version publication date
    23 May 2026
    First version publication date
    22 May 2024
    Other versions
    v1
    Version creation reason
    • New data added to full data set
    Trial has finished.
    Summary report(s)
    AVA-PED-301 Lay Language Summary Results

    Trial information

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    Trial identification
    Sponsor protocol code
    AVA-PED-301
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT04516967
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Sobi Inc.
    Sponsor organisation address
    890 Winter Street, Suite 200, Waltham, United States, 02451
    Public contact
    Medical Information, Sobi, Inc., +1 781 786 7370, medinfo.us@sobi.com
    Scientific contact
    Medical Information, Sobi, Inc., +1 781 786 7370, medinfo.us@sobi.com
    Paediatric regulatory details
    Is trial part of an agreed paediatric investigation plan (PIP)
    Yes
    EMA paediatric investigation plan number(s)
    EMEA-001136-PIP01-11
    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?
    Yes
    Results analysis stage
    Analysis stage
    Final
    Date of interim/final analysis
    18 Nov 2025
    Is this the analysis of the primary completion data?
    Yes
    Primary completion date
    08 Nov 2023
    Global end of trial reached?
    Yes
    Global end of trial date
    28 Oct 2025
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    To demonstrate that the efficacy of avatrombopag is superior to placebo for the treatment of pediatric subjects with ITP of ≥6 months duration who have had an insufficient response to a previous treatment
    Protection of trial subjects
    The study was in compliance with the ethical principles derived from the Declaration of Helsinki and the International Conference on Harmonization (ICH) and Good Clinical Practice (GCP) guidelines. All the local regulatory requirements pertinent to safety of trial subjects were also followed during the conduct of the trial.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    02 Mar 2021
    Long term follow-up planned
    No
    Independent data monitoring committee (IDMC) involvement?
    Yes
    Population of trial subjects
    Number of subjects enrolled per country
    Country: Number of subjects enrolled
    Poland: 4
    Country: Number of subjects enrolled
    United Kingdom: 13
    Country: Number of subjects enrolled
    France: 1
    Country: Number of subjects enrolled
    Germany: 3
    Country: Number of subjects enrolled
    Hungary: 5
    Country: Number of subjects enrolled
    United States: 13
    Country: Number of subjects enrolled
    Russian Federation: 5
    Country: Number of subjects enrolled
    Ukraine: 2
    Country: Number of subjects enrolled
    Türkiye: 29
    Worldwide total number of subjects
    75
    EEA total number of subjects
    13
    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)
    1
    Children (2-11 years)
    45
    Adolescents (12-17 years)
    29
    Adults (18-64 years)
    0
    From 65 to 84 years
    0
    85 years and over
    0

    Subject disposition

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    Recruitment
    Recruitment details
    -

    Pre-assignment
    Screening details
    To be eligible for the study, the subject must have had a confirmed diagnosis of primary ITP for ≥6 months duration and had an insufficient response to a previous treatment with an average of 2 platelet counts <30×10^9/L with no single count >35×10^9/L.

    Period 1
    Period 1 title
    Core Phase
    Is this the baseline period?
    Yes
    Allocation method
    Randomised - controlled
    Blinding used
    Double blind
    Roles blinded
    Subject, Investigator, Monitor, Data analyst, Carer, Assessor

    Arms
    Are arms mutually exclusive
    Yes

    Arm title
    Avatrombopag
    Arm description
    -
    Arm type
    Experimental

    Investigational medicinal product name
    Avatrombopag
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Powder for oral suspension, Tablet
    Routes of administration
    Oral use
    Dosage and administration details
    Subjects received avatrombopag or matching placebo as either the film-coated oral tablet or the powder for oral suspension. The powder for oral suspension was contained in a capsule that was to be opened to sprinkle the contents into an appropriate vehicle to prepare the suspension. No partial dosing from the capsule was allowed; the entire contents were to be used to prepare the suspension. On Day 1, Cohort 1 (≥12 to <18 years old) and Cohort 2 (≥6 to <12 years old) had a starting dose of avatrombopag of 20 mg once daily, administered as an oral tablet, consistent with the approved adult dosing. The starting dose for Cohort 3 (≥1 to <6 years old) was 10 mg once daily administered as an oral suspension. The dose of study drug was to be titrated up or down based on the subject’s platelet count to maintain a platelet count between ≥50 and ≤150×10^9/L.

    Arm title
    Placebo
    Arm description
    -
    Arm type
    Placebo

    Investigational medicinal product name
    Placebo to match avatrombopag
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Powder for oral suspension, Tablet
    Routes of administration
    Oral use
    Dosage and administration details
    Subjects received avatrombopag or matching placebo as either the film-coated oral tablet or the powder for oral suspension. The powder for oral suspension was contained in a capsule that was to be opened to sprinkle the contents into an appropriate vehicle to prepare the suspension. No partial dosing from the capsule was allowed; the entire contents were to be used to prepare the suspension. On Day 1, Cohort 1 (≥12 to <18 years old) and Cohort 2 (≥6 to <12 years old) had a starting dose of avatrombopag of 20 mg once daily, administered as an oral tablet, consistent with the approved adult dosing. The starting dose for Cohort 3 (≥1 to <6 years old) was 10 mg once daily administered as an oral suspension. The dose of study drug was to be titrated up or down based on the subject’s platelet count to maintain a platelet count between ≥50 and ≤150×10^9/L.

    Number of subjects in period 1
    Avatrombopag Placebo
    Started
    54
    21
    Completed
    44
    1
    Not completed
    10
    20
         Physician decision
    1
    1
         Adverse event, non-fatal
    2
    1
         Lack of efficacy
    7
    18
    Period 2
    Period 2 title
    Extension Phase
    Is this the baseline period?
    No
    Allocation method
    Not applicable
    Blinding used
    Not blinded
    Blinding implementation details
    Open label Extension Phase

    Arms
    Arm title
    Avatrombopag
    Arm description
    Avatrombopag
    Arm type
    Active comparator

    Investigational medicinal product name
    Avatrombopag
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Tablet, Powder for oral suspension
    Routes of administration
    Oral use
    Dosage and administration details
    Subjects received avatrombopag or matching placebo as either the film-coated oral tablet or the powder for oral suspension. The powder for oral suspension was contained in a capsule that was to be opened to sprinkle the contents into an appropriate vehicle to prepare the suspension. No partial dosing from the capsule was allowed; the entire contents were to be used to prepare the suspension. On Day 1, Cohort 1 (≥12 to <18 years old) and Cohort 2 (≥6 to <12 years old) had a starting dose of avatrombopag of 20 mg once daily, administered as an oral tablet, consistent with the approved adult dosing. The starting dose for Cohort 3 (≥1 to <6 years old) was 10 mg once daily administered as an oral suspension. The dose of study drug was to be titrated up or down based on the subject’s platelet count to maintain a platelet count between ≥50 and ≤150×10^9/L.

    Number of subjects in period 2 [1] [2]
    Avatrombopag
    Started
    44
    Completed
    49
    Not completed
    24
         Consent withdrawn by subject
    3
         Subject non-compliance
    1
         Adverse event, non-fatal
    5
         Sponsor request
    6
         Lack of efficacy
    9
    Joined
    29
         Transferred in from other group/arm
    29
    Notes
    [1] - The number of subjects starting the period is not consistent with the number completing the preceding period. It is expected the number of subjects starting the subsequent period will be the same as the number completing the preceding period.
    Justification: Subjects may enter the extension phase even if they discontinue the core phase as per the protocol this is the definition of who enters: Subjects who complete the 12 week Core Phase of the study, or who meet the stopping criteria as defined in Section 5.3 of the protocol and are discontinued from the Core Phase, will be eligible to enter the open-label Extension Phase, if they continue to meet the inclusion criteria and do not meet any exclusion criteria for this phase of the study.
    [2] - The number of subjects transferring in and out of the arms in the period are not the same. It is expected the net number of transfers in and out of the arms in a period, will be zero.
    Justification: Subjects may enter the extension phase even if they discontinue the core phase as per the protocol. The subjects who discontinued the core phase had to be listed in the extension phase as transferred into the extension phase. All of these subjects didn't have to discontinue the extension phase so it will not equal zero.

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Avatrombopag
    Reporting group description
    -

    Reporting group title
    Placebo
    Reporting group description
    -

    Reporting group values
    Avatrombopag Placebo Total
    Number of subjects
    54 21 75
    Age categorical
    Units: Subjects
        Infants and toddlers (28 days-23 months)
    1 0 1
        Children (2-11 years)
    32 13 45
        Adolescents (12-17 years)
    21 8 29
    Age continuous
    Units: years
        arithmetic mean (standard deviation)
    8.9 ( 4.36 ) 9.9 ( 4.13 ) -
    Gender categorical
    Units: Subjects
        Female
    24 12 36
        Male
    30 9 39
    Subject analysis sets

    Subject analysis set title
    Full Analysis Set
    Subject analysis set type
    Full analysis
    Subject analysis set description
    All randomized subjects.

    Subject analysis sets values
    Full Analysis Set
    Number of subjects
    75
    Age categorical
    Units: Subjects
        Infants and toddlers (28 days-23 months)
    1
        Children (2-11 years)
    45
        Adolescents (12-17 years)
    29
    Age continuous
    Units: years
        arithmetic mean (standard deviation)
    ( )
    Gender categorical
    Units: Subjects
        Female
        Male

    End points

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    End points reporting groups
    Reporting group title
    Avatrombopag
    Reporting group description
    -

    Reporting group title
    Placebo
    Reporting group description
    -
    Reporting group title
    Avatrombopag
    Reporting group description
    Avatrombopag

    Subject analysis set title
    Full Analysis Set
    Subject analysis set type
    Full analysis
    Subject analysis set description
    All randomized subjects.

    Primary: Durable Platelet Response

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    End point title
    Durable Platelet Response
    End point description
    The primary efficacy endpoint was durable platelet response as defined by the proportion of subjects achieving at least 6 out of 8 weekly platelet counts ≥50×10^9/L during the last 8 weeks of the 12-week Treatment Period in the Core Phase in the absence of rescue medication.
    End point type
    Primary
    End point timeframe
    12 Weeks
    End point values
    Avatrombopag Placebo
    Number of subjects analysed
    54
    21
    Units: Percentage
        Yes
    15
    0
        No
    39
    21
    Statistical analysis title
    Durable Platelet Response
    Comparison groups
    Avatrombopag v Placebo
    Number of subjects included in analysis
    75
    Analysis specification
    Pre-specified
    Analysis type
    equivalence
    P-value
    = 0.0077
    Method
    Fisher exact
    Confidence interval

    Primary: Platelet Response

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    End point title
    Platelet Response
    End point description
    Platelet response was defined as having at least 2 consecutive platelet assessments ≥50×10^9/L over the 12 weeks of treatment in the Core Phase in the absence of rescue medication.
    End point type
    Primary
    End point timeframe
    12 Weeks
    End point values
    Avatrombopag Placebo
    Number of subjects analysed
    54
    21
    Units: Percentage
        Yes
    44
    0
        No
    10
    21
    Statistical analysis title
    Platelet Response - FAS
    Comparison groups
    Avatrombopag v Placebo
    Number of subjects included in analysis
    75
    Analysis specification
    Pre-specified
    Analysis type
    equivalence
    P-value
    = 0.0067
    Method
    Fisher exact
    Confidence interval

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    Core Phase - 12 weeks, Extension Phase - End of Study
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    26.1
    Reporting groups
    Reporting group title
    Avatrombopag
    Reporting group description
    -

    Reporting group title
    Placebo
    Reporting group description
    -

    Reporting group title
    Open Label Extension
    Reporting group description
    Adverse Events reported through the End of Study visit.

    Serious adverse events
    Avatrombopag Placebo Open Label Extension
    Total subjects affected by serious adverse events
         subjects affected / exposed
    5 / 54 (9.26%)
    1 / 21 (4.76%)
    22 / 73 (30.14%)
         number of deaths (all causes)
    0
    0
    0
         number of deaths resulting from adverse events
    0
    0
    0
    Injury, poisoning and procedural complications
    Abdominal Injury
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Head injury
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Vascular disorders
    Deep vein thrombosis
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Nervous system disorders
    Headache
         subjects affected / exposed
    1 / 54 (1.85%)
    0 / 21 (0.00%)
    0 / 73 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Dysarthria
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    11 / 73 (15.07%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Paraesthesia
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Tethered cord syndrome
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Blood and lymphatic system disorders
    Immune thrombocytopenia
         subjects affected / exposed
    1 / 54 (1.85%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 2
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Thrombocytosis
         subjects affected / exposed
    1 / 54 (1.85%)
    0 / 21 (0.00%)
    2 / 73 (2.74%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
    2 / 2
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Aplastic Anaemia
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Bone Marrow Disorder
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Bone Marrow Reticulin Fibrosis
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Febrile neutropenia
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Thrombocytopenia
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    4 / 73 (5.48%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 8
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    General disorders and administration site conditions
    Influenza like illness
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Mucosal haemorrhage
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    2 / 73 (2.74%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 3
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Immune system disorders
    Hypogammaglobulinaemia
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Gastrointestinal disorders
    Mouth haemorrhage
         subjects affected / exposed
    1 / 54 (1.85%)
    1 / 21 (4.76%)
    0 / 73 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Oral purpura
         subjects affected / exposed
    1 / 54 (1.85%)
    0 / 21 (0.00%)
    0 / 73 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Rectal haemorrhage
         subjects affected / exposed
    1 / 54 (1.85%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Dental caries
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Gastritis
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Reproductive system and breast disorders
    Heavy menstrual bleeding
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Vaginal haemorrhage
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Respiratory, thoracic and mediastinal disorders
    Epistaxis
         subjects affected / exposed
    1 / 54 (1.85%)
    0 / 21 (0.00%)
    4 / 73 (5.48%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 6
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Skin and subcutaneous tissue disorders
    Skin haemorrhage
         subjects affected / exposed
    0 / 54 (0.00%)
    1 / 21 (4.76%)
    0 / 73 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Petechiae
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Urticaria
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Infections and infestations
    Appendicitis
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Gastroenteritis
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    2 / 73 (2.74%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Gastroenteritis viral
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    1 / 73 (1.37%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 5%
    Non-serious adverse events
    Avatrombopag Placebo Open Label Extension
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    50 / 54 (92.59%)
    16 / 21 (76.19%)
    71 / 73 (97.26%)
    Injury, poisoning and procedural complications
    Contusion
         subjects affected / exposed
    3 / 54 (5.56%)
    1 / 21 (4.76%)
    4 / 73 (5.48%)
         occurrences all number
    7
    1
    22
    Head injury
         subjects affected / exposed
    1 / 54 (1.85%)
    0 / 21 (0.00%)
    4 / 73 (5.48%)
         occurrences all number
    1
    0
    5
    Joint injury
         subjects affected / exposed
    1 / 54 (1.85%)
    0 / 21 (0.00%)
    4 / 73 (5.48%)
         occurrences all number
    1
    0
    4
    Vascular disorders
    Haematoma
         subjects affected / exposed
    3 / 54 (5.56%)
    3 / 21 (14.29%)
    4 / 73 (5.48%)
         occurrences all number
    3
    6
    9
    Nervous system disorders
    Headache
         subjects affected / exposed
    10 / 54 (18.52%)
    4 / 21 (19.05%)
    17 / 73 (23.29%)
         occurrences all number
    22
    4
    44
    General disorders and administration site conditions
    Pyrexia
         subjects affected / exposed
    9 / 54 (16.67%)
    0 / 21 (0.00%)
    18 / 73 (24.66%)
         occurrences all number
    9
    0
    32
    Fatigue
         subjects affected / exposed
    1 / 54 (1.85%)
    0 / 21 (0.00%)
    4 / 73 (5.48%)
         occurrences all number
    1
    0
    7
    Blood and lymphatic system disorders
    Anaemia
         subjects affected / exposed
    1 / 54 (1.85%)
    1 / 21 (4.76%)
    4 / 73 (5.48%)
         occurrences all number
    1
    1
    9
    Thrombocytopenia
         subjects affected / exposed
    0 / 54 (0.00%)
    1 / 21 (4.76%)
    4 / 73 (5.48%)
         occurrences all number
    0
    3
    13
    Gastrointestinal disorders
    Diarrhoea
         subjects affected / exposed
    4 / 54 (7.41%)
    0 / 21 (0.00%)
    12 / 73 (16.44%)
         occurrences all number
    5
    0
    18
    Vomiting
         subjects affected / exposed
    4 / 54 (7.41%)
    0 / 21 (0.00%)
    8 / 73 (10.96%)
         occurrences all number
    6
    0
    17
    Abdominal Pain
         subjects affected / exposed
    3 / 54 (5.56%)
    0 / 21 (0.00%)
    7 / 73 (9.59%)
         occurrences all number
    3
    0
    16
    Gingival bleeding
         subjects affected / exposed
    2 / 54 (3.70%)
    2 / 21 (9.52%)
    3 / 73 (4.11%)
         occurrences all number
    2
    3
    3
    Rectal haemorrhage
         subjects affected / exposed
    0 / 54 (0.00%)
    2 / 21 (9.52%)
    1 / 73 (1.37%)
         occurrences all number
    0
    2
    1
    Abdominal pain upper
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    8 / 73 (10.96%)
         occurrences all number
    0
    0
    11
    Nausea
         subjects affected / exposed
    2 / 54 (3.70%)
    0 / 21 (0.00%)
    9 / 73 (12.33%)
         occurrences all number
    5
    0
    12
    Toothache
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    4 / 73 (5.48%)
         occurrences all number
    0
    0
    6
    Respiratory, thoracic and mediastinal disorders
    Epistaxis
         subjects affected / exposed
    12 / 54 (22.22%)
    4 / 21 (19.05%)
    17 / 73 (23.29%)
         occurrences all number
    30
    9
    154
    Cough
         subjects affected / exposed
    9 / 54 (16.67%)
    0 / 21 (0.00%)
    20 / 73 (27.40%)
         occurrences all number
    11
    0
    57
    Oropharyngeal pain
         subjects affected / exposed
    7 / 54 (12.96%)
    0 / 21 (0.00%)
    12 / 73 (16.44%)
         occurrences all number
    7
    0
    17
    Rhinorrhoea
         subjects affected / exposed
    3 / 54 (5.56%)
    0 / 21 (0.00%)
    10 / 73 (13.70%)
         occurrences all number
    3
    0
    11
    Nasal congestion
         subjects affected / exposed
    2 / 54 (3.70%)
    0 / 21 (0.00%)
    8 / 73 (10.96%)
         occurrences all number
    3
    0
    22
    Skin and subcutaneous tissue disorders
    Petechiae
         subjects affected / exposed
    14 / 54 (25.93%)
    6 / 21 (28.57%)
    9 / 73 (12.33%)
         occurrences all number
    20
    6
    16
    Ecchymosis
         subjects affected / exposed
    10 / 54 (18.52%)
    1 / 21 (4.76%)
    9 / 73 (12.33%)
         occurrences all number
    19
    1
    24
    Dry skin
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    4 / 73 (5.48%)
         occurrences all number
    0
    0
    4
    Pruritus
         subjects affected / exposed
    0 / 54 (0.00%)
    1 / 21 (4.76%)
    4 / 73 (5.48%)
         occurrences all number
    0
    1
    6
    Rash
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    5 / 73 (6.85%)
         occurrences all number
    0
    0
    7
    Musculoskeletal and connective tissue disorders
    Arthralgia
         subjects affected / exposed
    4 / 54 (7.41%)
    0 / 21 (0.00%)
    4 / 73 (5.48%)
         occurrences all number
    6
    0
    10
    Pain in extremity
         subjects affected / exposed
    3 / 54 (5.56%)
    0 / 21 (0.00%)
    2 / 73 (2.74%)
         occurrences all number
    4
    0
    2
    Infections and infestations
    Upper respiratory tract infection
         subjects affected / exposed
    6 / 54 (11.11%)
    2 / 21 (9.52%)
    30 / 73 (41.10%)
         occurrences all number
    6
    2
    75
    COVID-19
         subjects affected / exposed
    4 / 54 (7.41%)
    1 / 21 (4.76%)
    3 / 73 (4.11%)
         occurrences all number
    4
    1
    4
    Nasopharyngitis
         subjects affected / exposed
    4 / 54 (7.41%)
    0 / 21 (0.00%)
    13 / 73 (17.81%)
         occurrences all number
    5
    0
    20
    Viral upper respiratory tract infection
         subjects affected / exposed
    3 / 54 (5.56%)
    0 / 21 (0.00%)
    6 / 73 (8.22%)
         occurrences all number
    5
    0
    12
    Gastroenteritis
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    7 / 73 (9.59%)
         occurrences all number
    0
    0
    11
    Influenza
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    6 / 73 (8.22%)
         occurrences all number
    0
    0
    7
    Pharyngitis
         subjects affected / exposed
    1 / 54 (1.85%)
    0 / 21 (0.00%)
    5 / 73 (6.85%)
         occurrences all number
    1
    0
    11
    Sinusitis
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    5 / 73 (6.85%)
         occurrences all number
    0
    0
    5
    Urinary tract infection
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    4 / 73 (5.48%)
         occurrences all number
    0
    0
    5
    Viral infection
         subjects affected / exposed
    2 / 54 (3.70%)
    0 / 21 (0.00%)
    4 / 73 (5.48%)
         occurrences all number
    2
    0
    5
    Rhinitis
         subjects affected / exposed
    0 / 54 (0.00%)
    0 / 21 (0.00%)
    7 / 73 (9.59%)
         occurrences all number
    0
    0
    16
    Metabolism and nutrition disorders
    Iron deficiency
         subjects affected / exposed
    1 / 54 (1.85%)
    0 / 21 (0.00%)
    4 / 73 (5.48%)
         occurrences all number
    1
    0
    5

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    17 Dec 2020
    Amendment 1 refined several inclusion and exclusion criteria, clarified the allowable contraception methods, aligned the definition of a lack of treatment effect in the Extension Phase with the Core Phase definition, and confirmed that a protocol amendment would be implemented if two subjects in Cohort 3 require medical monitor approved dose escalations above 20 mg daily.
    02 Nov 2021
    Amendment 2 updated the sponsor name, and clarified corticosteroid use prior to Baseline, the minimum subject age at Baseline, and the timing of serial PK sampling.

    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

    Online references

    http://www.ncbi.nlm.nih.gov/pubmed/40418942
    http://www.ncbi.nlm.nih.gov/pubmed/41411046
    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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