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    Clinical Trial Results:
    Randomised, double-blind, placebo-controlled study of APD421 (amisulpride for IV injection) as treatment of established post-operative nausea and vomiting, in patients who have had prior prophylaxis

    Summary
    EudraCT number
    2015-003992-30
    Trial protocol
    DE  
    Global end of trial date
    20 Jan 2017

    Results information
    Results version number
    v1(current)
    This version publication date
    15 Jul 2018
    First version publication date
    15 Jul 2018
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    DP10019
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT02646566
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Acacia Pharma Ltd
    Sponsor organisation address
    Harston mill, Harston, United Kingdom, cb22 7gg
    Public contact
    Dr Gabriel Fox, Acacia Pharma Ltd, Medinfo@acaciapharma.com
    Scientific contact
    Dr Gabriel Fox, Acacia Pharma Ltd, Medinfo@acaciapharma.com
    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
    31 Mar 2017
    Is this the analysis of the primary completion data?
    Yes
    Primary completion date
    20 Jan 2017
    Global end of trial reached?
    Yes
    Global end of trial date
    20 Jan 2017
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    To compare the efficacy of 5 mg and 10 mg APD421 to placebo as treatment of established PONV, in adults who have had prior PONV prophylaxis
    Protection of trial subjects
    The investigator or individuals designated by the investigator (where acceptable by regulations) was responsible for ensuring that each patient were provided a signed and dated written informed consent before participating in the study. Each patient who attended a pre-study visit was provided with a written explanation of the study giving details of the investigational drug, study procedures and objectives, potential hazards involved and overall requirements for study subjects
    Background therapy
    N/A
    Evidence for comparator
    Placebo
    Actual start date of recruitment
    08 Feb 2016
    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
    France: 28
    Country: Number of subjects enrolled
    Germany: 158
    Country: Number of subjects enrolled
    Canada: 142
    Country: Number of subjects enrolled
    United States: 374
    Worldwide total number of subjects
    702
    EEA total number of subjects
    186
    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)
    638
    From 65 to 84 years
    63
    85 years and over
    1

    Subject disposition

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    Recruitment
    Recruitment details
    Planned (consent): 2,500 Planned (randomised): 700 (to give at least 690 evaluable patients, 230 in each of the three treatment arms) Planned (per country, randomised): Germany, 190; France, 15; Canada, 100; USA, 395 Enrolled (consented): 2,285

    Pre-assignment
    Screening details
    The study consisted of screening from days –28 to 0 (day of operation); a primary study period, which was the period beginning with the first episode of PONV (emesis and/or a request by the patient for anti-emetic medication to treat nausea) and ending 24 hours after administration of study medication, safety follow-up continued up to Day 7.

    Period 1
    Period 1 title
    Overall Trial (Overall Period)
    Is this the baseline period?
    Yes
    Allocation method
    Randomised - controlled
    Blinding used
    Double blind
    Roles blinded
    Subject, Investigator, Monitor, Data analyst
    Blinding implementation details
    The randomisation information was not available to the sponsor or to any personnel at any study site or at the CRO. The randomisation list was made available to the appropriate Qualified Person at the clinical packaging contractor for the study labelling Purpose

    Arms
    Are arms mutually exclusive
    Yes

    Arm title
    Placebo
    Arm description
    Study medication (APD421/placebo) was administered to each patient in a double-blind fashion, by slow IV push over about two minutes into a peripheral or central venous cannula
    Arm type
    Active comparator

    Investigational medicinal product name
    Placebo
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Intravenous use
    Dosage and administration details
    Study medication (APD421/placebo) was administered to each patient in a double-blind fashion, by slow IV push over about two minutes into a peripheral or central venous cannula

    Arm title
    APD421 at 5mg
    Arm description
    APD421 (Amisulpride) at 5mg was administered to each patient in a double-blind fashion, by slow IV push over about two minutes into a peripheral or central venous cannula.
    Arm type
    Experimental

    Investigational medicinal product name
    Amisulpride
    Investigational medicinal product code
    APD421
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Intravenous use
    Dosage and administration details
    APD421 at 5mg was administered to each patient in a double-blind fashion, by slow IV push over about two minutes into a peripheral or central venous cannula.

    Arm title
    APD421 at 10mg
    Arm description
    APD421 at 10mg was administered to each patient in a double-blind fashion, by slow IV push over about two minutes into a peripheral or central venous cannula.
    Arm type
    Experimental

    Investigational medicinal product name
    Amisulpride
    Investigational medicinal product code
    APD421
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Intravenous use
    Dosage and administration details
    APD421 at 10mg was administered to each patient in a double-blind fashion, by slow IV push over about two minutes into a peripheral or central venous cannula.

    Number of subjects in period 1
    Placebo APD421 at 5mg APD421 at 10mg
    Started
    235
    237
    230
    Completed
    230
    231
    226
    Not completed
    5
    6
    4
         Lost to follow-up
    5
    5
    4
         Dropped out
    -
    1
    -

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Placebo
    Reporting group description
    Study medication (APD421/placebo) was administered to each patient in a double-blind fashion, by slow IV push over about two minutes into a peripheral or central venous cannula

    Reporting group title
    APD421 at 5mg
    Reporting group description
    APD421 (Amisulpride) at 5mg was administered to each patient in a double-blind fashion, by slow IV push over about two minutes into a peripheral or central venous cannula.

    Reporting group title
    APD421 at 10mg
    Reporting group description
    APD421 at 10mg was administered to each patient in a double-blind fashion, by slow IV push over about two minutes into a peripheral or central venous cannula.

    Reporting group values
    Placebo APD421 at 5mg APD421 at 10mg Total
    Number of subjects
    235 237 230 702
    Age categorical
    Units: Subjects
        Adults (18-64 years)
    217 215 206 638
        From 65-84 years
    18 22 23 63
        85 years and over
    0 0 1 1
    Age continuous
    Units: years
        arithmetic mean (standard deviation)
    46 ± 13.38 45.8 ± 13.12 46.9 ± 13.03 -
    Gender categorical
    Units: Subjects
        Female
    212 213 208 633
        Male
    23 24 22 69
    Subject analysis sets

    Subject analysis set title
    mITT
    Subject analysis set type
    Modified intention-to-treat
    Subject analysis set description
    The mITT population was considered the primary efficacy analysis population and included all patients who had signed the ICF, were randomised into the study and received a dose of either APD421 or placebo.

    Subject analysis sets values
    mITT
    Number of subjects
    702
    Age categorical
    Units: Subjects
        Adults (18-64 years)
    638
        From 65-84 years
    63
        85 years and over
    1
    Age continuous
    Units: years
        arithmetic mean (standard deviation)
    46.3 ± 13.17
    Gender categorical
    Units: Subjects
        Female
    633
        Male
    69

    End points

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    End points reporting groups
    Reporting group title
    Placebo
    Reporting group description
    Study medication (APD421/placebo) was administered to each patient in a double-blind fashion, by slow IV push over about two minutes into a peripheral or central venous cannula

    Reporting group title
    APD421 at 5mg
    Reporting group description
    APD421 (Amisulpride) at 5mg was administered to each patient in a double-blind fashion, by slow IV push over about two minutes into a peripheral or central venous cannula.

    Reporting group title
    APD421 at 10mg
    Reporting group description
    APD421 at 10mg was administered to each patient in a double-blind fashion, by slow IV push over about two minutes into a peripheral or central venous cannula.

    Subject analysis set title
    mITT
    Subject analysis set type
    Modified intention-to-treat
    Subject analysis set description
    The mITT population was considered the primary efficacy analysis population and included all patients who had signed the ICF, were randomised into the study and received a dose of either APD421 or placebo.

    Primary: Number of Complete Responders in a 24-hour period after study drug administration

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    End point title
    Number of Complete Responders in a 24-hour period after study drug administration
    End point description
    The primary efficacy endpoint defined as success or failure of initial study treatment (complete response), where success was defined as no emetic episodes (vomiting or retching) from 30 minutes (to give time for the study medication to take effect) to 24 hours after administration of study medication and no administration of anti-emetic rescue medication at any time in the 24-hour period after administration of study medication.
    End point type
    Primary
    End point timeframe
    24 hour period after study drug administration
    End point values
    Placebo APD421 at 5mg APD421 at 10mg mITT
    Number of subjects analysed
    235
    237
    230
    702
    Units: Number of Complete Responders
    67
    96
    80
    702
    Statistical analysis title
    Pearson's chi-squared test
    Statistical analysis description
    Analysis 1: Primary efficacy analysis comparison of the incidence of the primary efficacy variable between the group that received 5mg APD421 and the group that received placebo using Pearson’s chi-squared test.
    Comparison groups
    APD421 at 5mg v Placebo
    Number of subjects included in analysis
    472
    Analysis specification
    Pre-specified
    Analysis type
    superiority
    P-value
    = 0.109 [1]
    Method
    Chi-squared
    Confidence interval
    Notes
    [1] - One-sided p-value,adjusted for multiplicity using the Hommel procedure.
    Statistical analysis title
    Pearson's chi-squared test
    Statistical analysis description
    Analysis 2: Primary efficacy analysis comparison of the incidence of the primary efficacy variable between the group that received 10mg APD421 and the group that received placebo using Pearson’s chi-squared test.
    Comparison groups
    Placebo v APD421 at 10mg
    Number of subjects included in analysis
    465
    Analysis specification
    Pre-specified
    Analysis type
    superiority
    P-value
    = 0.003 [2]
    Method
    Chi-squared
    Confidence interval
    Notes
    [2] - One-sided p-value,adjusted for multiplicity using the Hommel procedure.

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    Any Adverse events from randomization, throughout the clinical conduct and up to the follow-up visit.
    Assessment type
    Non-systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    18.1
    Reporting groups
    Reporting group title
    APD421 IV at 5mg
    Reporting group description
    APD421 given intravenously at 5mg

    Reporting group title
    APD421 IV at 10mg
    Reporting group description
    -

    Reporting group title
    APD421 IV Placebo
    Reporting group description
    -

    Serious adverse events
    APD421 IV at 5mg APD421 IV at 10mg APD421 IV Placebo
    Total subjects affected by serious adverse events
         subjects affected / exposed
    6 / 100 (6.00%)
    3 / 99 (3.03%)
    5 / 113 (4.42%)
         number of deaths (all causes)
    0
    0
    0
         number of deaths resulting from adverse events
    0
    0
    0
    Injury, poisoning and procedural complications
    Gastrointestinal anastomotic leak
    alternative assessment type: Systematic
         subjects affected / exposed
    0 / 100 (0.00%)
    0 / 99 (0.00%)
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Post procedural haemorrhage
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 100 (1.00%)
    0 / 99 (0.00%)
    0 / 113 (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
    Postoperative ileus
    alternative assessment type: Systematic
         subjects affected / exposed
    0 / 100 (0.00%)
    1 / 99 (1.01%)
    0 / 113 (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
    Cardiac disorders
    Acute Myocardial Infaction
    alternative assessment type: Systematic
         subjects affected / exposed
    0 / 100 (0.00%)
    1 / 99 (1.01%)
    0 / 113 (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
    Blood and lymphatic system disorders
    Leukocytosis
    alternative assessment type: Systematic
         subjects affected / exposed
    0 / 100 (0.00%)
    1 / 99 (1.01%)
    0 / 113 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Eye disorders
    Periorbital fat herniation
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 100 (1.00%)
    0 / 99 (0.00%)
    0 / 113 (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
    Gastrointestinal disorders
    Colitis
    alternative assessment type: Systematic
         subjects affected / exposed
    0 / 100 (0.00%)
    0 / 99 (0.00%)
    1 / 113 (0.88%)
         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 haemorrhage
    alternative assessment type: Systematic
         subjects affected / exposed
    0 / 100 (0.00%)
    1 / 99 (1.01%)
    0 / 113 (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
    Gastrointestinal inflammation
    alternative assessment type: Systematic
         subjects affected / exposed
    0 / 100 (0.00%)
    0 / 99 (0.00%)
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Intra abdominal Haematoma
    alternative assessment type: Systematic
         subjects affected / exposed
    0 / 100 (0.00%)
    0 / 99 (0.00%)
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Vomiting
    alternative assessment type: Systematic
         subjects affected / exposed
    0 / 100 (0.00%)
    0 / 99 (0.00%)
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Post procedural atomic bile leak
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 100 (1.00%)
    0 / 99 (0.00%)
    0 / 113 (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
    Infections and infestations
    Pelvic abscess
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 100 (1.00%)
    0 / 99 (0.00%)
    0 / 113 (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
    Urinary tract infection
    alternative assessment type: Systematic
         subjects affected / exposed
    0 / 100 (0.00%)
    1 / 99 (1.01%)
    0 / 113 (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
    Frequency threshold for reporting non-serious adverse events: 5%
    Non-serious adverse events
    APD421 IV at 5mg APD421 IV at 10mg APD421 IV Placebo
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    33 / 100 (33.00%)
    28 / 99 (28.28%)
    32 / 113 (28.32%)
    Nervous system disorders
    Headache
         subjects affected / exposed
    10 / 100 (10.00%)
    10 / 99 (10.10%)
    17 / 113 (15.04%)
         occurrences all number
    10
    10
    17
    General disorders and administration site conditions
    Infusion site pain
         subjects affected / exposed
    8 / 100 (8.00%)
    12 / 99 (12.12%)
    10 / 113 (8.85%)
         occurrences all number
    8
    12
    10
    Gastrointestinal disorders
    Nausea
         subjects affected / exposed
    30 / 100 (30.00%)
    27 / 99 (27.27%)
    30 / 113 (26.55%)
         occurrences all number
    33
    28
    32
    Flatulence
         subjects affected / exposed
    13 / 100 (13.00%)
    13 / 99 (13.13%)
    18 / 113 (15.93%)
         occurrences all number
    13
    13
    18
    Constipation
         subjects affected / exposed
    13 / 100 (13.00%)
    11 / 99 (11.11%)
    17 / 113 (15.04%)
         occurrences all number
    13
    11
    17
    Vomiting
         subjects affected / exposed
    11 / 100 (11.00%)
    10 / 99 (10.10%)
    13 / 113 (11.50%)
         occurrences all number
    14
    11
    13
    Skin and subcutaneous tissue disorders
    Pruritus
         subjects affected / exposed
    7 / 100 (7.00%)
    10 / 99 (10.10%)
    13 / 113 (11.50%)
         occurrences all number
    7
    10
    13

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    14 Mar 2016
    Country specific changes for France version 1.1- Change to exclusion criteria, addition of electrocardiogram and addition of ECG information.
    05 Oct 2016
    Substantial Amendment- Change to number of patients and estimated recruitment, change to expected number of study centers, change to exclusion criteria, expansion of secondary efficacy variable to include measures of the time course of nausea, addition of sensitivity analysis to secondary efficacy analysis, Change in sample size statement to include revised patient numbers and difference in response rate between treatments. Addition of electrocardiogram (This is applicable to France only) and addition of ECG information, including timing, equipment requirements, review and storage of tracings. Addition of ECG information.

    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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