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    Clinical Trial Results:
    A single-site, randomised, controlled, parallel design, open-label investigation of an approved nebulised recombinant human DNase enzyme (dornase alfa) to reduce hyperinflammation in hospitalised participants with COVID-19 (The COVASE trial)

    Summary
    EudraCT number
    2020-001937-11
    Trial protocol
    GB  
    Global end of trial date
    05 Nov 2021

    Results information
    Results version number
    v2(current)
    This version publication date
    22 Dec 2023
    First version publication date
    04 Jun 2023
    Other versions
    v1
    Version creation reason
    • Correction of full data set
    Minor corrections
    Summary report(s)
    CSR COVASE V2.0

    Trial information

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    Trial identification
    Sponsor protocol code
    132333
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT04359654
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    University College London
    Sponsor organisation address
    Gower Street, London, United Kingdom, WC1E 6BT
    Public contact
    Joint Research Office, University College London, ctimps@ucl.ac.uk
    Scientific contact
    Professor Joanna Porter, University College London, joanna.porter@ucl.ac.uk
    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
    04 Feb 2022
    Is this the analysis of the primary completion data?
    Yes
    Primary completion date
    05 Nov 2021
    Global end of trial reached?
    Yes
    Global end of trial date
    05 Nov 2021
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    To assess the effect of nebulised dornase alpha on C-reactive Protein (CRP) in hospitalised participants with COVID-19
    Protection of trial subjects
    The IMP treatment had been in widespread clinical use since the 1960s without side effects Reassured that they could withdraw at any time with no impact on their clinical treatment. Trial team were happy to involve family members if needed for discussions.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    16 Jun 2020
    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
    United Kingdom: 41
    Worldwide total number of subjects
    41
    EEA total number of subjects
    0
    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)
    25
    From 65 to 84 years
    16
    85 years and over
    0

    Subject disposition

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    Recruitment
    Recruitment details
    31 subjects were randomised to BAC + dornase-alfa, with 10 randomised to BAC. 1 subject from the BAC + dornase alfa group withdrew consent prior to treatment and was replaced. There were 30 evaluable participants in the BAC + dornase-alfa group. 1 subject from the BAC group had a baseline CRP measurement and no more, hence was unevaluable.

    Pre-assignment
    Screening details
    Inclusion criteria 1. 18 years+ 2. Participants who are hospitalised for suspected Coronavirus (SARS-CoV)-2 infection confirmed by polymerase chain reaction (PCR) test or radiological confirmation with chest CT 3. Stable oxygen saturation (>=94%) on supplementary oxygen 4. CRP >= 30 mg/L All patients admitted with SARS-Cov-2 screened.

    Period 1
    Period 1 title
    Overall trial (overall period)
    Is this the baseline period?
    Yes
    Allocation method
    Randomised - controlled
    Blinding used
    Not blinded
    Blinding implementation details
    Not applicable.

    Arms
    Are arms mutually exclusive
    Yes

    Arm title
    Dornase Alfa
    Arm description
    Nebulised Dornase Alfa (DA) 2.5mg bd for 7 days or until discharge whatever was sooner
    Arm type
    Experimental

    Investigational medicinal product name
    Dornase Alfa
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Concentrate for nebuliser solution
    Routes of administration
    Inhalation use
    Dosage and administration details
    2.5mg bd

    Arm title
    Best available care
    Arm description
    Standard treatment
    Arm type
    No intervention

    Investigational medicinal product name
    No investigational medicinal product assigned in this arm
    Number of subjects in period 1
    Dornase Alfa Best available care
    Started
    31
    10
    Completed
    30
    9
    Not completed
    1
    1
         Consent withdrawn by subject
    1
    -
         Discharged from hospital before data collected
    -
    1

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Overall trial
    Reporting group description
    -

    Reporting group values
    Overall trial Total
    Number of subjects
    41 41
    Age categorical
    Units: Subjects
        Adults 18+
    39 39
        Not recorded
    2 2
    Age continuous
    Units: years
        median (full range (min-max))
    56 (31 to 77) -
    Gender categorical
    Units: Subjects
        Female
    9 9
        Male
    30 30
        Not recorded
    2 2

    End points

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    End points reporting groups
    Reporting group title
    Dornase Alfa
    Reporting group description
    Nebulised Dornase Alfa (DA) 2.5mg bd for 7 days or until discharge whatever was sooner

    Reporting group title
    Best available care
    Reporting group description
    Standard treatment

    Primary: Changes in CRP

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    End point title
    Changes in CRP
    End point description
    Changes in acute phase reactant (C-Reactive Protein (CRP)) - a clinically important marker of inflammation.
    End point type
    Primary
    End point timeframe
    The analysis is conducted at 7 days.
    End point values
    Dornase Alfa Best available care
    Number of subjects analysed
    30
    9
    Units: mg/L
        number (not applicable)
    30
    9
    Statistical analysis title
    Analysis
    Statistical analysis description
    The primary outcome was CRP up to 7 days or at hospital discharge, whichever was sooner, analysed on the log scale. Pre-specified secondary outcomes included days on oxygen; time to hospital discharge; mortality by day 35; and changes in clinically relevant biomarkers including lymphocyte count and D-dimer levels. Efficacy assessments of the primary and secondary outcomes in the modified intention-to-treat population were performed on all randomised participants who had received at least 1 dose
    Comparison groups
    Dornase Alfa v Best available care
    Number of subjects included in analysis
    39
    Analysis specification
    Pre-specified
    Analysis type
    superiority
    P-value
    < 0.05 [1]
    Method
    Mixed models analysis
    Parameter type
    least square mean
    Point estimate
    -0.5
    Confidence interval
         level
    95%
         sides
    2-sided
         lower limit
    -0.97
         upper limit
    -0.02
    Variability estimate
    Standard error of the mean
    Dispersion value
    0.23
    Notes
    [1] - Mixed models analysis, CRP analysed on log scale

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    Adverse events were assessed by research from randomisation to 35 days follow.
    Adverse event reporting additional description
    As per the trial protocol SAEs assessed as anticipated with COVID-19 infection were not reportable to Sponsor. Of the 16 SAEs recorded on the trial database only 6 were reported to Sponsor. All SAEs were assessed as not related to trial IMP.
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    24.0
    Reporting groups
    Reporting group title
    Best Available Care
    Reporting group description
    -

    Reporting group title
    Dornase Alfa
    Reporting group description
    -

    Serious adverse events
    Best Available Care Dornase Alfa
    Total subjects affected by serious adverse events
         subjects affected / exposed
    2 / 9 (22.22%)
    8 / 30 (26.67%)
         number of deaths (all causes)
    0
    1
         number of deaths resulting from adverse events
    0
    0
    Injury, poisoning and procedural complications
    Subdural haematoma
         subjects affected / exposed
    1 / 9 (11.11%)
    0 / 30 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Respiratory, thoracic and mediastinal disorders
    Pulmonary embolism
         subjects affected / exposed
    1 / 9 (11.11%)
    2 / 30 (6.67%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Respiratory failure type 2
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Respiratory distress
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Organising pneumonia
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Respiratory failure type 1
         subjects affected / exposed
    0 / 9 (0.00%)
    4 / 30 (13.33%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 4
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Pulmonary hypertension
         subjects affected / exposed
    1 / 9 (11.11%)
    0 / 30 (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
    Pyelonephritis
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Aspiration pneumonia
         subjects affected / exposed
    1 / 9 (11.11%)
    0 / 30 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Hospital Acquired Pneumonia
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 2.5%
    Non-serious adverse events
    Best Available Care Dornase Alfa
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    4 / 9 (44.44%)
    16 / 30 (53.33%)
    General disorders and administration site conditions
    Chest pain
         subjects affected / exposed
    0 / 9 (0.00%)
    3 / 30 (10.00%)
         occurrences all number
    0
    3
    Chest tightness
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Respiratory, thoracic and mediastinal disorders
    Cough
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Dry nose
         subjects affected / exposed
    1 / 9 (11.11%)
    0 / 30 (0.00%)
         occurrences all number
    1
    0
    Dysphonia
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Emphysema
         subjects affected / exposed
    1 / 9 (11.11%)
    0 / 30 (0.00%)
         occurrences all number
    1
    0
    Haemoptysis
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Hypercapnia
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Sputum bloody
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Tachypnoea
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Psychiatric disorders
    Confusion aggravated
         subjects affected / exposed
    1 / 9 (11.11%)
    0 / 30 (0.00%)
         occurrences all number
    1
    0
    Depression
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Sleep disturbance
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Investigations
    Blood glucose increased
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Oxygen saturation decreased
         subjects affected / exposed
    1 / 9 (11.11%)
    0 / 30 (0.00%)
         occurrences all number
    1
    0
    Injury, poisoning and procedural complications
    Fall
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Cardiac disorders
    Bradycardia
         subjects affected / exposed
    1 / 9 (11.11%)
    1 / 30 (3.33%)
         occurrences all number
    1
    1
    Pericardial Effusion
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Nervous system disorders
    Cognitive impairment
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Dizziness
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Dizzy spells
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Headache
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Tingling feet/hands
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Blood and lymphatic system disorders
    Microcytic anaemia
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Gastrointestinal disorders
    Blood in stool
         subjects affected / exposed
    1 / 9 (11.11%)
    0 / 30 (0.00%)
         occurrences all number
    1
    0
    Constipation
         subjects affected / exposed
    1 / 9 (11.11%)
    1 / 30 (3.33%)
         occurrences all number
    1
    1
    Diarrhoea
         subjects affected / exposed
    1 / 9 (11.11%)
    0 / 30 (0.00%)
         occurrences all number
    1
    0
    Dry mouth
         subjects affected / exposed
    1 / 9 (11.11%)
    0 / 30 (0.00%)
         occurrences all number
    1
    0
    Haemorrhoids
         subjects affected / exposed
    1 / 9 (11.11%)
    0 / 30 (0.00%)
         occurrences all number
    1
    0
    Rectal bleeding
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Tingling mouth
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Ulcerative Colitis relapse
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Hepatobiliary disorders
    Transaminitis
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Musculoskeletal and connective tissue disorders
    Leg spasm
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Polyarthralgia
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Infections and infestations
    Lower Respiratory Tract Infection
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Metabolism and nutrition disorders
    Dehydration
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1
    Hyperglycaemia
         subjects affected / exposed
    0 / 9 (0.00%)
    1 / 30 (3.33%)
         occurrences all number
    0
    1

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? No

    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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