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    Clinical Trial Results:
    A Phase 2, Efficacy, Safety, and Tolerability Study of ALKS 3831 in Schizophrenia with Alcohol Use Disorder

    Summary
    EudraCT number
    2014-001211-39
    Trial protocol
    BG   PL  
    Global end of trial date
    01 Feb 2017

    Results information
    Results version number
    v1(current)
    This version publication date
    10 Mar 2018
    First version publication date
    10 Mar 2018
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    ALK3831-401
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT02161718
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Alkermes, Inc.
    Sponsor organisation address
    852 Winter Street, Waltham, United States, 02451
    Public contact
    Eva Stroynowski, Alkermes, Inc., 001 781-609-7000, eva.stroynowski@alkermes.com
    Scientific contact
    Eva Stroynowski, Alkermes, Inc., 001 781-609-7000, eva.stroynowski@alkermes.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
    03 Jan 2018
    Is this the analysis of the primary completion data?
    Yes
    Primary completion date
    01 Feb 2017
    Global end of trial reached?
    Yes
    Global end of trial date
    01 Feb 2017
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    To evaluate the efficacy of olanzapine coadministered with samidorphan (ALKS 3831) compared with olanzapine coadministered with placebo in schizophrenia with alcohol use disorder (AUD).
    Protection of trial subjects
    This trial was conducted in compliance with Good Clinical Practice (GCP) guidelines for conducting clinical trials. The informed consent form (ICF), protocol, and amendments were reviewed and approved by the institutional review board (IRB) or independent ethics committee (IEC) for each clinical trial site.
    Background therapy
    All subjects received olanzapine; the olanzapine dose level throughout the study was determined individually by the Principal Investigator according to current clinical practice. The study included 5 periods: screening, open-label olanzapine, open-label ALKS 3831, double-blind treatment, and follow-up.
    Evidence for comparator
    -
    Actual start date of recruitment
    30 May 2014
    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
    United States: 221
    Country: Number of subjects enrolled
    Poland: 9
    Country: Number of subjects enrolled
    Bulgaria: 70
    Worldwide total number of subjects
    300
    EEA total number of subjects
    79
    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)
    299
    From 65 to 84 years
    1
    85 years and over
    0

    Subject disposition

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    Recruitment
    Recruitment details
    Subjects were adults with a diagnosis of schizophrenia and Alcohol Use Disorder (AUD). Subjects must also have recently experienced an exacerbation of disease symptoms (eg, hospitalization), but could not exceed a pre-defined level of symptom severity at the time of screening.

    Pre-assignment
    Screening details
    Subjects experiencing disease symptom exacerbation (eg, inpatient hospitalization) within the past 6 months were considered for screening.

    Period 1
    Period 1 title
    Randomized, double-blind period (overall period)
    Is this the baseline period?
    Yes
    Allocation method
    Randomised - controlled
    Blinding used
    Double blind
    Roles blinded
    Subject, Investigator, Monitor, Data analyst, Carer, Assessor
    Blinding implementation details
    Alkermes study and clinical staff, subjects, and caregivers were blinded to treatment assignment until the final database lock. Alkermes study staff involved in drug supply management and IWRS management were blinded except when their study function required unblinding. These unblinded staff followed standard operating procedures to ensure that they did not bias the study.

    Arms
    Are arms mutually exclusive
    Yes

    Arm title
    Olanzapine + Samidorphan
    Arm description
    Oral olanzapine taken daily as prescribed by physician + 10 mg samidorphan
    Arm type
    Experimental

    Investigational medicinal product name
    Olanzapine
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Tablet
    Routes of administration
    Oral use
    Dosage and administration details
    Dose of olanzapine was individualized, as determined by physician.

    Investigational medicinal product name
    Samidorphan
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Tablet
    Routes of administration
    Oral use
    Dosage and administration details
    10 mg oral samidorphan taken daily with olanzapine

    Arm title
    Olanzapine + Placebo
    Arm description
    Olanzapine as prescribed by Investigator + placebo
    Arm type
    Active comparator

    Investigational medicinal product name
    Olanzapine
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Tablet
    Routes of administration
    Oral use
    Dosage and administration details
    Dose of olanzapine was individualized, as determined by physician.

    Investigational medicinal product name
    Placebo
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Tablet
    Routes of administration
    Oral use
    Dosage and administration details
    Placebo matched to samidorphan

    Number of subjects in period 1 [1]
    Olanzapine + Samidorphan Olanzapine + Placebo
    Started
    112
    117
    Completed
    53
    58
    Not completed
    59
    59
         Received prohibitive treatment
    1
    2
         Relocation
    3
    -
         Adverse event, serious fatal
    1
    1
         Physician decision
    2
    4
         Consent withdrawn by subject
    23
    18
         Adverse event, non-fatal
    8
    9
         Noncompliance with study drug
    8
    2
         Lost to follow-up
    9
    15
         Non-compliance with study procedures
    2
    4
         Protocol deviation
    2
    3
         Lack of efficacy
    -
    1
    Notes
    [1] - The number of subjects reported to be in the baseline period are not the same as the worldwide number enrolled in the trial. It is expected that these numbers will be the same.
    Justification: This study had multiple periods including an open-label olanzapine period followed by an open-label ALKS 3831 period. The baseline period for this posting includes all subjects who were randomized into the double-blind period and received at least 1 dose of study drug, which coincides with the primary efficacy endpoint. The worldwide number enrolled includes subjects who entered the open-label olanzapine period.

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Olanzapine + Samidorphan
    Reporting group description
    Oral olanzapine taken daily as prescribed by physician + 10 mg samidorphan

    Reporting group title
    Olanzapine + Placebo
    Reporting group description
    Olanzapine as prescribed by Investigator + placebo

    Reporting group values
    Olanzapine + Samidorphan Olanzapine + Placebo Total
    Number of subjects
    112 117 229
    Age categorical
    Units: Subjects
        Adults (18-64 years)
    112 117 229
    Age continuous
    Units: years
        arithmetic mean (standard deviation)
    46.4 ± 10.60 45.1 ± 10.22 -
    Gender categorical
    Units: Subjects
        Female
    23 26 49
        Male
    89 91 180

    End points

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    End points reporting groups
    Reporting group title
    Olanzapine + Samidorphan
    Reporting group description
    Oral olanzapine taken daily as prescribed by physician + 10 mg samidorphan

    Reporting group title
    Olanzapine + Placebo
    Reporting group description
    Olanzapine as prescribed by Investigator + placebo

    Primary: Time from Randomization to First Event of Exacerbation of Disease Symptoms (EEDS)

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    End point title
    Time from Randomization to First Event of Exacerbation of Disease Symptoms (EEDS)
    End point description
    EEDS was related to worsening of disease symptoms, as confirmed by the Independent Adjudication Committee (IAC). Key efficacy analyses were based on the intent-to-treat (ITT) population defined as all randomized subjects who received at least 1 dose of study drug post-randomization. All EEDS cases were reviewed by the IAC in a blinded manner. Only events confirmed by the IAC were used for efficacy analyses. Subjects who completed or discontinued the double-blind period without an EEDS were censored at the last EEDS assessment date. For all other subjects with EEDS, the date of first EEDS was counted as event date in the analysis of primary endpoint.
    End point type
    Primary
    End point timeframe
    Assessments were collected between study weeks 3 (time of randomization) through 63 (total of 60 weeks)
    End point values
    Olanzapine + Samidorphan Olanzapine + Placebo
    Number of subjects analysed
    112
    117
    Units: Subjects
        Number of subjects with EEDS
    25
    29
        Number of subjects censored
    87
    88
    Statistical analysis title
    Hazard ratio
    Statistical analysis description
    Hazard ratio of ALKS 3831 (olanzapine + samidorphan) to olanzapine + placebo
    Comparison groups
    Olanzapine + Samidorphan v Olanzapine + Placebo
    Number of subjects included in analysis
    229
    Analysis specification
    Pre-specified
    Analysis type
    superiority
    P-value
    = 0.746
    Method
    Logrank
    Parameter type
    Hazard ratio (HR)
    Point estimate
    0.91
    Confidence interval
         level
    95%
         sides
    2-sided
         lower limit
    0.53
         upper limit
    1.56

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    Adverse events are presented for the randomized, double-blind period (9-15 months) as well as the 2 week open-label ALKS 3831 (olanzapine + samidorphan) period for a total timeframe of up to 62 weeks.
    Adverse event reporting additional description
    3 SAEs were seen during the follow-up period, including a gastrointestinal haemorrhage (following open-label ALKS 3831), a uterine leiomyoma (following olanzapine + placebo), and an event of COPD (following olanzapine + samidorphan). There were no significant (>5%) AEs seen during the follow-up period.
    Assessment type
    Non-systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    17.0
    Reporting groups
    Reporting group title
    Open-label ALKS 3831
    Reporting group description
    A 2-week open-label period; all subjects received olanzapine (as prescribed by the Investigator) + 10 mg samidorphan

    Reporting group title
    Olanzapine + placebo
    Reporting group description
    All randomized subjects who received at least 1 dose of study drug (olanzapine + placebo) during the double-blind treatment period.

    Reporting group title
    Olanzapine + Samidorphan
    Reporting group description
    All randomized subjects who received at least 1 dose of ALKS 3831 (olanzapine + samidorphan) during the double-blind treatment period.

    Serious adverse events
    Open-label ALKS 3831 Olanzapine + placebo Olanzapine + Samidorphan
    Total subjects affected by serious adverse events
         subjects affected / exposed
    4 / 255 (1.57%)
    12 / 117 (10.26%)
    7 / 112 (6.25%)
         number of deaths (all causes)
    0
    1
    1
         number of deaths resulting from adverse events
    0
    1
    1
    Investigations
    Electrocardiogram abnormal
         subjects affected / exposed
    0 / 255 (0.00%)
    0 / 117 (0.00%)
    1 / 112 (0.89%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Injury, poisoning and procedural complications
    Fall
         subjects affected / exposed
    1 / 255 (0.39%)
    0 / 117 (0.00%)
    0 / 112 (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
    Laceration
         subjects affected / exposed
    1 / 255 (0.39%)
    0 / 117 (0.00%)
    0 / 112 (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
    Alcohol poisoning
         subjects affected / exposed
    0 / 255 (0.00%)
    1 / 117 (0.85%)
    0 / 112 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    1 / 1
    0 / 0
    Nervous system disorders
    Convulsion
         subjects affected / exposed
    1 / 255 (0.39%)
    0 / 117 (0.00%)
    0 / 112 (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
    Dizziness
         subjects affected / exposed
    1 / 255 (0.39%)
    0 / 117 (0.00%)
    0 / 112 (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
    Transient ischaemic attack
         subjects affected / exposed
    0 / 255 (0.00%)
    0 / 117 (0.00%)
    1 / 112 (0.89%)
         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
    Chronic obstructive pulmonary disease
         subjects affected / exposed
    0 / 255 (0.00%)
    0 / 117 (0.00%)
    1 / 112 (0.89%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    1 / 1
    Psychiatric disorders
    Alcoholism
         subjects affected / exposed
    1 / 255 (0.39%)
    0 / 117 (0.00%)
    0 / 112 (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
    Schizophrenia, paranoid type
         subjects affected / exposed
    1 / 255 (0.39%)
    0 / 117 (0.00%)
    0 / 112 (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
    Schizophrenia
         subjects affected / exposed
    0 / 255 (0.00%)
    4 / 117 (3.42%)
    3 / 112 (2.68%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 4
    0 / 3
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Paranoia
         subjects affected / exposed
    0 / 255 (0.00%)
    0 / 117 (0.00%)
    1 / 112 (0.89%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Psychotic disorder
         subjects affected / exposed
    0 / 255 (0.00%)
    0 / 117 (0.00%)
    1 / 112 (0.89%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Aggression
         subjects affected / exposed
    0 / 255 (0.00%)
    1 / 117 (0.85%)
    0 / 112 (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
    Agitation
         subjects affected / exposed
    0 / 255 (0.00%)
    1 / 117 (0.85%)
    0 / 112 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Disturbance in social behaviour
         subjects affected / exposed
    0 / 255 (0.00%)
    2 / 117 (1.71%)
    0 / 112 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 2
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Suicidal ideation
         subjects affected / exposed
    0 / 255 (0.00%)
    3 / 117 (2.56%)
    0 / 112 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 3
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Infections and infestations
    Parotitis
         subjects affected / exposed
    0 / 255 (0.00%)
    1 / 117 (0.85%)
    0 / 112 (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
    Open-label ALKS 3831 Olanzapine + placebo Olanzapine + Samidorphan
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    0 / 255 (0.00%)
    19 / 117 (16.24%)
    26 / 112 (23.21%)
    Investigations
    Weight increased
         subjects affected / exposed
    0 / 255 (0.00%)
    14 / 117 (11.97%)
    16 / 112 (14.29%)
         occurrences all number
    0
    15
    16
    Alanine aminotransferase increased
         subjects affected / exposed
    0 / 255 (0.00%)
    0 / 117 (0.00%)
    6 / 112 (5.36%)
         occurrences all number
    0
    0
    7
    Infections and infestations
    Nasopharyngitis
         subjects affected / exposed
    0 / 255 (0.00%)
    5 / 117 (4.27%)
    7 / 112 (6.25%)
         occurrences all number
    0
    6
    7

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    02 May 2014
    Protocol amendment #1 - updated duration of the study, projected enrollment, and study procedures
    22 May 2014
    Protocol amendment #2 - modified inclusion criterion.
    13 Jun 2014
    Protocol amendment #2 - EU ONLY - corrected definitions and addressed specific circumstances for sites in the European Union.
    07 Aug 2014
    Protocol amendment #3 - modified study procedures and inclusion/exclusion criteria.
    12 Nov 2014
    Protocol amendment #3 - CZECH REPUBLIC ONLY - clarified olanzapine dose levels, increased pregnancy testing, and modified an exclusion criterion.
    15 Dec 2014
    Protocol amendment #3 - BULGARIA ONLY - clarified study procedures in Bulgaria and modified exclusion criteria.
    20 May 2015
    Protocol amendment #4 - Removed Czech Republic from study, modified inclusion/exclusion criteria, and integrated changes from the Bulgarian-specific amendment into a single global amendment.
    28 Jul 2015
    Protocol amendment #5 - clarified timing for Timeline Follow-Back assessment and revised the EEDS criteria.
    01 Mar 2016
    Protocol amendment #6 - removed the interim futility analysis and clarified an EEDS criterion.

    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.
    Due to difficulties in recruitment of this specific population, the sample sizes in each group were small and patients were further stabilized during the olanzapine lead in, potentially masking treatment differences.
    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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