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    Clinical Trial Results:
    Evaluation of the SONAS® ultrasound device for the assessment of bilateral cerebral perfusion in subjects with acute stroke

    Summary
    EudraCT number
    2018-001279-19
    Trial protocol
    DE   AT  
    Global end of trial date
    29 Dec 2019

    Results information
    Results version number
    v1(current)
    This version publication date
    25 Dec 2021
    First version publication date
    25 Dec 2021
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    SONAS2018
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    -
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    BURL Concepts, Inc.
    Sponsor organisation address
    4901 Morena Blvd, suite 703, San Diego, CA 92117, United States,
    Public contact
    Clinical Trials Information, BURL Concepts, Inc., 001 619277 3702,
    Scientific contact
    Clinical Trials Information, BURL Concepts, Inc., 001 619277 3702,
    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
    20 Feb 2020
    Is this the analysis of the primary completion data?
    No
    Global end of trial reached?
    Yes
    Global end of trial date
    29 Dec 2019
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    To determine the safety and feasibility of detecting acoustic signals related to blood supply in subjects with acute stroke by using the SONAS® device.
    Protection of trial subjects
    The clinical investigation was conducted in compliance with the Declaration of Helsinki, clinical investigation plan, EN ISO 14155:2011, ICH GCP, and any conditions of approval imposed by the reviewing ethics committee, competent authority and/or local institution. Only subjects with acute stroke meeting all inclusion criteria and none of the exclusion criteria had to be entered in the clinical investigation. All subjects were free to withdraw at any time and for any reasons. Subjects underwent SONAS® testing only after receiving routine clinical care for stroke management (including cerebral imaging computed tomography [cCT] or cerebral magnetic resonance imaging [cMRI]). All subjects were carefully monitored for the occurrence of adverse events (AEs) from the start of any investigation-related procedure until 72 hours after the second SONAS® testing.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    01 Jan 2019
    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
    Germany: 20
    Worldwide total number of subjects
    20
    EEA total number of subjects
    20
    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)
    7
    From 65 to 84 years
    10
    85 years and over
    3

    Subject disposition

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    Recruitment
    Recruitment details
    Male and female subjects aged at least 18 years with acute stroke diagnosed within 24 hours of symptoms onset and assessed intracranial arteria circulation by cMRI or cCCT were recruited in 1 center in Germany. The first subject signed the informed consent form on 01-Apr-2019 and the last subject on 25-Dec-2019.

    Pre-assignment
    Screening details
    20 subjects signed the informed consent. The SONAS® test was performed at least once on all subjects using the SONAS® device.

    Period 1
    Period 1 title
    Overall investigation (overall period)
    Is this the baseline period?
    Yes
    Allocation method
    Not applicable
    Blinding used
    Not blinded

    Arms
    Arm title
    SONAS® test
    Arm description
    Subjects with 2 SONAS® tests using the SONAS® device 24 (±4) hours apart.
    Arm type
    Experimental

    Investigational medicinal product name
    SONAS® device
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Pharmaceutical dose form not applicable
    Routes of administration
    External use
    Dosage and administration details
    2 SONAS® tests using the SONAS® device were performed 24 (±4) hours apart.

    Number of subjects in period 1
    SONAS® test
    Started
    20
    Completed
    18
    Not completed
    2
         Adverse event, serious fatal
    1
         Adverse event, non-fatal
    1

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    SONAS® test
    Reporting group description
    Subjects with 2 SONAS® tests using the SONAS® device 24 (±4) hours apart.

    Reporting group values
    SONAS® test Total
    Number of subjects
    20 20
    Age categorical
    Units: Subjects
        Adults (≥18 years)
    20 20
    Age continuous
    Units: years
        median (full range (min-max))
    80.5 (44 to 91) -
    Gender categorical
    Units: Subjects
        Female
    14 14
        Male
    6 6
    Race
    Units: Subjects
        White
    20 20

    End points

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    End points reporting groups
    Reporting group title
    SONAS® test
    Reporting group description
    Subjects with 2 SONAS® tests using the SONAS® device 24 (±4) hours apart.

    Primary: Diagnostic performance results of SONAS® at first assessment

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    End point title
    Diagnostic performance results of SONAS® at first assessment [1]
    End point description
    The endpoint consists of the following parameters: • Diagnostic accuracy: percentage of subjects in whom the SONAS® assessment result matched the reference standard assessment • Sensitivity: percentage of subjects positive per SONAS®, among those subjects with confirmed strokes per the reference standard • Specificity: percentage of subjects negative per SONAS®, among those subjects confirmed as not having a stroke per the reference standard
    End point type
    Primary
    End point timeframe
    At Day 0 (first SONAS® test).
    Notes
    [1] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point.
    Justification: No statistical analysis for this end point was done.
    End point values
    SONAS® test
    Number of subjects analysed
    17 [2]
    Units: Percentage
    number (not applicable)
        Diagnostic accuracy (SONAS® and reference match)
    88.2
        Sensitivity (positive per SONAS®)
    92.9
        Specificity (negative per SONAS®)
    66.7
    Notes
    [2] - 3 subjects were excluded from analysis: N=1 met an exclusion criterion, N=2 had no usable data.
    No statistical analyses for this end point

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    From the start of any investigation-related procedure until 72 hours after the second SONAS® testing.
    Assessment type
    Non-systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    22.0
    Reporting groups
    Reporting group title
    SONAS® test
    Reporting group description
    -

    Serious adverse events
    SONAS® test
    Total subjects affected by serious adverse events
         subjects affected / exposed
    7 / 20 (35.00%)
         number of deaths (all causes)
    6
         number of deaths resulting from adverse events
    6
    Nervous system disorders
    Brain oedema
         subjects affected / exposed
    2 / 20 (10.00%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 1
    General disorders and administration site conditions
    Multiple organ dysfunction syndrome
         subjects affected / exposed
    2 / 20 (10.00%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 2
    Sudden cardiac death
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Infections and infestations
    Pneumonia
         subjects affected / exposed
    2 / 20 (10.00%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 2
    Frequency threshold for reporting non-serious adverse events: 0%
    Non-serious adverse events
    SONAS® test
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    17 / 20 (85.00%)
    Vascular disorders
    Arteriosclerosis
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Haematoma
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Hypertension
         subjects affected / exposed
    3 / 20 (15.00%)
         occurrences all number
    3
    Peripheral embolism
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    General disorders and administration site conditions
    Pain
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Respiratory, thoracic and mediastinal disorders
    Pleural effusion
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Psychiatric disorders
    Delirium
         subjects affected / exposed
    3 / 20 (15.00%)
         occurrences all number
    3
    Sleep disorder
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Investigations
    Blood creatinine increased
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Blood urine present
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Inflammatory marker increased
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Injury, poisoning and procedural complications
    Fibula fracture
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Joint dislocation
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Cardiac disorders
    Atrial fibrillation
         subjects affected / exposed
    2 / 20 (10.00%)
         occurrences all number
    2
    Cardiac failure
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Nervous system disorders
    Carotid artery thrombosis
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Headache
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Intracranial aneurysm
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Monoparesis
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Gastrointestinal disorders
    Nausea
         subjects affected / exposed
    3 / 20 (15.00%)
         occurrences all number
    3
    Vomiting
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Skin and subcutaneous tissue disorders
    Decubitus ulcer
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Renal and urinary disorders
    Acute kidney injury
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Infections and infestations
    Corneal infection
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Pneumonia
         subjects affected / exposed
    10 / 20 (50.00%)
         occurrences all number
    10
    Urinary tract infection
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Metabolism and nutrition disorders
    Hypercholesterolaemia
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Hyperglycaemia
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1
    Type 2 diabetes mellitus
         subjects affected / exposed
    1 / 20 (5.00%)
         occurrences all number
    1

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    10 Jul 2019
    Changes to version 3.0 (26-Nov-2018): - All components and subcomponents of the SONAS® system according to the investigator’s brochure were described. - Software version 1.12 was to be used for the SONAS® operating unit. - Inclusion criterion no. 3 was adapted. The required NIHSS score was reduced from ≥10 to ≥6, because neurological deficits may develop in a delayed manner, i.e. symptoms may be mild at admission despite a later proven vascular occlusion. - The targeted study population was extended from “subjects with acute large vessel occlusion stroke” to “subjects with acute stroke”, because in some subjects with severe neurological deficits, vascular occlusion cannot be proven anymore at admission (e.g. due to spontaneous recanalization). The requirement for a confirmed occlusion was removed in inclusion criterion no. 5. - If an MRI or CT is performed as part of the routine clinical practice at 24 hours, images were to be collected. - It was clarified that one SONAS® application may include a repeat test immediately after the first test to improve the data analysis if it does not jeopardize the subject's health according to the investigator’s judgement. - If the subject was able to give consent but was unable to sign the consent form in person due to a physical disability, the subject's willingness to participate in the study may be confirmed by a witness.

    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
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    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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