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    Clinical Trial Results:
    A Multicenter, Uncontrolled, Open-label Study and Extension Study for Verification of Efficacy and Safety for Perampanel Monotherapy in Untreated Patients with Partial Onset Seizures (Including Secondarily Generalized Seizures)

    Summary
    EudraCT number
    2019-003734-17
    Trial protocol
    Outside EU/EEA  
    Global end of trial date
    27 Jul 2020

    Results information
    Results version number
    v1(current)
    This version publication date
    07 Feb 2021
    First version publication date
    07 Feb 2021
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    E2007-J000-342
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT03201900
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Eisai Co., Ltd.
    Sponsor organisation address
    4-6-10 Koishikawa, Bunkyo-Ku, Tokyo , Japan, 112-8088
    Public contact
    Inquiry Service., Eisai, Inc., eisai-chiken_hotline@hhc.eisai.co.jp
    Scientific contact
    Inquiry Service., Eisai, Inc., eisai-chiken_hotline@hhc.eisai.co.jp
    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?
    Yes
    Results analysis stage
    Analysis stage
    Final
    Date of interim/final analysis
    27 Jul 2020
    Is this the analysis of the primary completion data?
    No
    Global end of trial reached?
    Yes
    Global end of trial date
    27 Jul 2020
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    To evaluate the seizure-free rate of the 26-week Maintenance Period in untreated subjects with partial onset seizures (POS).
    Protection of trial subjects
    This study was conducted in accordance with standard operating procedures (SOPs) of the sponsor (or designee), which are designed to ensure adherence to Good Clinical Practice (GCP) guidelines as required by the following: - Principles of the World Medical Association Declaration of Helsinki (World Medical Association, 2008) - International Council on Harmonisation (ICH) E6 Guideline for GCP (CPMP/ICH/135/95) of the European Agency for the Evaluation of Medicinal Products, Committee for Proprietary Medicinal Products, International Council for Harmonisation of Technical Requirements for Registration of Pharmaceuticals for Human Use -Title 21 of the United States (US) Code of Federal Regulations (US 21 CFR) regarding clinical studies, including Part 50 and Part 56 concerning informed subject consent and Institutional Review Board (IRB) regulations and applicable sections of US 21 CFR Part 312 - European Good Clinical Practice Directive 2005/28/EC and Clinical Trial Directive 2001/20/EC for studies conducted within any European Union (EU) country. All suspected unexpected serious adverse reactions were reported, as required, to the Competent Authorities of all involved EU member states. -Article 14, Paragraph 3, and Article 80-2 of the Pharmaceutical Affairs Law (Law No. 145, 1960) for studies conducted in Japan, in addition to Japan’s GCP Subject Information and Informed Consent.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    28 Jun 2017
    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
    Japan: 43
    Country: Number of subjects enrolled
    Korea, Republic of: 46
    Worldwide total number of subjects
    89
    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)
    7
    Adults (18-64 years)
    71
    From 65 to 84 years
    11
    85 years and over
    0

    Subject disposition

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    Recruitment
    Recruitment details
    Subjects took part in the study at 38 investigative sites in Japan and Korea from 28 Jun 2017 to 27 Jul 2020. A total of 98 subjects were screened, of which 07 were screen failures and 91 entered Treatment Phase. Of these, 89 subjects received the study treatment.

    Pre-assignment
    Screening details
    Study consisted of 2 main phases: Treatment Phase (consisted of a 4¬milligram [mg] Treatment Phase [Titration Period {6 weeks} and Maintenance Period {26 weeks}], and for those subjects who need a higher dose, the 8 mg Treatment Phase [Titration Period {4 weeks} and Maintenance Period {26 weeks}]) and Extension Phase.

    Period 1
    Period 1 title
    Treatment Phase
    Is this the baseline period?
    Yes
    Allocation method
    Not applicable
    Blinding used
    Not blinded

    Arms
    Arm title
    Perampanel
    Arm description
    Subjects received 2 mg of perampanel tablets orally once daily (QD) for up to 2 weeks, then dose was up-titrated to 4 mg QD for 4 weeks in 4-mg Titration Period (6 Weeks) followed by 4 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). If a subject experienced seizures during 4-mg Maintenance Period, the subject was transitioned to 8-mg Titration Period based on the subject’s safety and tolerability. In 8-mg Titration Period (4 weeks), subjects received 6 mg of perampanel tablets orally QD for 2 weeks and up-titrated to 8 mg QD for 2 weeks followed by 8 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). Subjects who completed Treatment Phase or who ended Maintenance Period of Treatment Phase due to insufficient efficacy or intolerability, and who agreed to continue perampanel monotherapy entered Extension Phase and received perampanel until insufficient seizure control or lack of tolerability, or initiation of additional antiepileptic drug (AEDs).
    Arm type
    Experimental

    Investigational medicinal product name
    Perampanel
    Investigational medicinal product code
    E2007
    Other name
    Fycompa
    Pharmaceutical forms
    Tablet
    Routes of administration
    Oral use
    Dosage and administration details
    Subjects received 2 mg of perampanel tablets orally QD for up to 2 weeks, then dose was up-titrated to 4 mg QD for 4 weeks in 4-mg Titration Period (6 Weeks) followed by 4 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). If a subject experienced seizures during 4-mg Maintenance Period, the subject was transitioned to 8-mg Titration Period based on the subject’s safety and tolerability. In 8-mg Titration Period (4 weeks), subjects received 6 mg of perampanel tablets orally QD for 2 weeks and up-titrated to 8 mg QD for 2 weeks followed by 8 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). Subjects who completed Treatment Phase or who ended Maintenance Period of Treatment Phase due to insufficient efficacy or intolerability, and who agreed to continue perampanel monotherapy entered Extension Phase and received perampanel until insufficient seizure control or lack of tolerability, or initiation of additional AEDs.

    Number of subjects in period 1
    Perampanel
    Started
    89
    Completed
    54
    Not completed
    35
         Adverse event, non-fatal
    9
         Subject Choice
    1
         Other than specified
    11
         Withdrawal of consent
    6
         Inadequate therapeutic effect
    6
         Lost to follow-up
    2
    Period 2
    Period 2 title
    Extension Phase
    Is this the baseline period?
    No
    Allocation method
    Not applicable
    Blinding used
    Not blinded

    Arms
    Arm title
    Perampanel
    Arm description
    Subjects received 2 mg of perampanel tablets orally QD for up to 2 weeks, then dose was up-titrated to 4 mg QD for 4 weeks in 4-mg Titration Period (6 Weeks) followed by 4 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). If a subject experienced seizures during 4-mg Maintenance Period, the subject was transitioned to 8-mg Titration Period based on the subject’s safety and tolerability. In 8-mg Titration Period (4 weeks), subjects received 6 mg of perampanel tablets orally QD for 2 weeks and up-titrated to 8 mg QD for 2 weeks followed by 8 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). Subjects who completed Treatment Phase or who ended Maintenance Period of Treatment Phase due to insufficient efficacy or intolerability, and who agreed to continue perampanel monotherapy entered Extension Phase and received perampanel until insufficient seizure control or lack of tolerability, or initiation of additional AEDs.
    Arm type
    Experimental

    Investigational medicinal product name
    Perampanel
    Investigational medicinal product code
    E2007
    Other name
    Fycompa
    Pharmaceutical forms
    Tablet
    Routes of administration
    Oral use
    Dosage and administration details
    Subjects received 2 mg of perampanel tablets orally QD for up to 2 weeks, then dose was up-titrated to 4 mg QD for 4 weeks in 4-mg Titration Period (6 Weeks) followed by 4 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). If a subject experienced seizures during 4-mg Maintenance Period, the subject was transitioned to 8-mg Titration Period based on the subject’s safety and tolerability. In 8-mg Titration Period (4 weeks), subjects received 6 mg of perampanel tablets orally QD for 2 weeks and up-titrated to 8 mg QD for 2 weeks followed by 8 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). Subjects who completed Treatment Phase or who ended Maintenance Period of Treatment Phase due to insufficient efficacy or intolerability, and who agreed to continue perampanel monotherapy entered Extension Phase and received perampanel until insufficient seizure control or lack of tolerability, or initiation of additional AEDs.

    Number of subjects in period 2 [1]
    Perampanel
    Started
    46
    Completed
    38
    Not completed
    8
         Consent withdrawn by subject
    3
         Subject Choice
    1
         Pregnancy
    1
         Unspecified
    1
         Inadequate therapeutic effect
    1
         Lost to follow-up
    1
    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: Eligible subjects who completed Treatment Phase and agreed to continue in the Extension Phase.

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Perampanel
    Reporting group description
    Subjects received 2 mg of perampanel tablets orally once daily (QD) for up to 2 weeks, then dose was up-titrated to 4 mg QD for 4 weeks in 4-mg Titration Period (6 Weeks) followed by 4 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). If a subject experienced seizures during 4-mg Maintenance Period, the subject was transitioned to 8-mg Titration Period based on the subject’s safety and tolerability. In 8-mg Titration Period (4 weeks), subjects received 6 mg of perampanel tablets orally QD for 2 weeks and up-titrated to 8 mg QD for 2 weeks followed by 8 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). Subjects who completed Treatment Phase or who ended Maintenance Period of Treatment Phase due to insufficient efficacy or intolerability, and who agreed to continue perampanel monotherapy entered Extension Phase and received perampanel until insufficient seizure control or lack of tolerability, or initiation of additional antiepileptic drug (AEDs).

    Reporting group values
    Perampanel Total
    Number of subjects
    89 89
    Age categorical
    Units: Subjects
    Age continuous
    Units: years
        arithmetic mean (standard deviation)
    42.1 ± 18.19 -
    Gender categorical
    Units: Subjects
        Female
    44 44
        Male
    45 45
    Race
    Units: Subjects
        Asian
    89 89
    Ethnicity
    Units: Subjects
        Hispanic or Latino
    0 0
        Not Hispanic or Latino
    89 89
        Unknown or Not
    0 0

    End points

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    End points reporting groups
    Reporting group title
    Perampanel
    Reporting group description
    Subjects received 2 mg of perampanel tablets orally once daily (QD) for up to 2 weeks, then dose was up-titrated to 4 mg QD for 4 weeks in 4-mg Titration Period (6 Weeks) followed by 4 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). If a subject experienced seizures during 4-mg Maintenance Period, the subject was transitioned to 8-mg Titration Period based on the subject’s safety and tolerability. In 8-mg Titration Period (4 weeks), subjects received 6 mg of perampanel tablets orally QD for 2 weeks and up-titrated to 8 mg QD for 2 weeks followed by 8 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). Subjects who completed Treatment Phase or who ended Maintenance Period of Treatment Phase due to insufficient efficacy or intolerability, and who agreed to continue perampanel monotherapy entered Extension Phase and received perampanel until insufficient seizure control or lack of tolerability, or initiation of additional antiepileptic drug (AEDs).
    Reporting group title
    Perampanel
    Reporting group description
    Subjects received 2 mg of perampanel tablets orally QD for up to 2 weeks, then dose was up-titrated to 4 mg QD for 4 weeks in 4-mg Titration Period (6 Weeks) followed by 4 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). If a subject experienced seizures during 4-mg Maintenance Period, the subject was transitioned to 8-mg Titration Period based on the subject’s safety and tolerability. In 8-mg Titration Period (4 weeks), subjects received 6 mg of perampanel tablets orally QD for 2 weeks and up-titrated to 8 mg QD for 2 weeks followed by 8 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). Subjects who completed Treatment Phase or who ended Maintenance Period of Treatment Phase due to insufficient efficacy or intolerability, and who agreed to continue perampanel monotherapy entered Extension Phase and received perampanel until insufficient seizure control or lack of tolerability, or initiation of additional AEDs.

    Primary: Percentage of Subjects With POS Who Achieved Seizure-free Status During the 26-week Maintenance Period of 4 mg Perampanel

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    End point title
    Percentage of Subjects With POS Who Achieved Seizure-free Status During the 26-week Maintenance Period of 4 mg Perampanel [1]
    End point description
    A seizure was a brief episode of signs or symptoms due to abnormal excessive or synchronous neuronal activity in the brain. POS was a seizure that starts in one area of the brain that may or may not associated with loss of awareness and consciousness. Seizure-free status was defined as no incidence of seizure during the 26-week Maintenance Period of 4 mg perampanel. Modified intent to treat (mITT) set: group of subjects who signed informed consent, received at least 1 dose of study drug, who entered the 4-mg Maintenance Period and had at least 1 postdose primary efficacy measurement in the 26-week Maintenance Period.
    End point type
    Primary
    End point timeframe
    26 weeks in Maintenance Period of 4 mg perampanel
    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: Only descriptive statistics data was planned to be analyzed for this endpoint.
    End point values
    Perampanel
    Number of subjects analysed
    73
    Units: percentage of subjects
        number (not applicable)
    63.0
    No statistical analyses for this end point

    Secondary: Percentage of Subjects With POS Who Achieved Seizure-free Status During the 26-week Maintenance Period of 4 or 8 mg Perampanel

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    End point title
    Percentage of Subjects With POS Who Achieved Seizure-free Status During the 26-week Maintenance Period of 4 or 8 mg Perampanel
    End point description
    A seizure was a brief episode of signs or symptoms due to abnormal excessive or synchronous neuronal activity in the brain. POS was a seizure that starts in one area of the brain that may or may not associated with loss of awareness and consciousness. Seizure-free status was defined as no incidence of seizure during the 26-week Maintenance Period of last evaluated dose of 4 or 8 mg perampanel. mITT set: group of subjects who signed informed consent, received at least 1 dose of study drug, who entered the 4-mg Maintenance Period and had at least 1 postdose primary efficacy measurement in the 26-week Maintenance Period.
    End point type
    Secondary
    End point timeframe
    26 weeks in Maintenance Period of 4 or 8 mg perampanel
    End point values
    Perampanel
    Number of subjects analysed
    73
    Units: percentage of subjects
        number (not applicable)
    74.0
    No statistical analyses for this end point

    Secondary: Percentage of Subjects With POS Who Achieved Seizure-free Status During the 52-week Treatment Phase (26-week Maintenance Period Plus 26-week Extension Phase) of 4 mg of Perampanel

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    End point title
    Percentage of Subjects With POS Who Achieved Seizure-free Status During the 52-week Treatment Phase (26-week Maintenance Period Plus 26-week Extension Phase) of 4 mg of Perampanel
    End point description
    A seizure was a brief episode of signs or symptoms due to abnormal excessive or synchronous neuronal activity in the brain. POS was a seizure that started in one area of the brain that may or may not associated with loss of awareness and consciousness. Seizure-free status was defined as no incidence of seizure during the 52-week treatment phase of 4 mg perampanel. mITT set: group of subjects who signed informed consent, received at least 1 dose of study drug, who entered the 4-mg Maintenance Period and had at least 1 postdose primary efficacy measurement in the 26-week Maintenance Period.
    End point type
    Secondary
    End point timeframe
    52-week (Maintenance Period of 4 mg perampanel + Extension Phase of 4 mg perampanel)
    End point values
    Perampanel
    Number of subjects analysed
    73
    Units: percentage of subjects
        number (not applicable)
    32.9
    No statistical analyses for this end point

    Secondary: Percentage of Subjects With POS Who Achieved Seizure-free Status During the 52-week of Treatment Phase (26-week Maintenance Period Plus 26-week Extension Phase) of Last Evaluated Dose of 4 or 8 mg Perampanel

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    End point title
    Percentage of Subjects With POS Who Achieved Seizure-free Status During the 52-week of Treatment Phase (26-week Maintenance Period Plus 26-week Extension Phase) of Last Evaluated Dose of 4 or 8 mg Perampanel
    End point description
    A seizure was a brief episode of signs or symptoms due to abnormal excessive or synchronous neuronal activity in the brain. POS was a seizure that starts in one area of the brain that may or may not associated with loss of awareness and consciousness. Seizure-free status was defined as no incidence of seizure during the 52-week treatment phase of last evaluated dose of 4 or 8 mg perampanel. mITT set: group of subjects who signed informed consent, received at least 1 dose of study drug, who entered the 4-mg Maintenance Period and had at least 1 postdose primary efficacy measurement in the 26-week Maintenance Period.
    End point type
    Secondary
    End point timeframe
    52-week (Maintenance Period of last evaluated dose of 4 or 8 mg perampanel + Extension Phase of 4 or 8 mg perampanel)
    End point values
    Perampanel
    Number of subjects analysed
    73
    Units: percentage of subjects
        number (not applicable)
    42.5
    No statistical analyses for this end point

    Secondary: Time to Onset of First Seizure From the First dose of Study Drug in the Maintenance Period of 4 mg Perampanel

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    End point title
    Time to Onset of First Seizure From the First dose of Study Drug in the Maintenance Period of 4 mg Perampanel
    End point description
    Time to onset of first seizure was defined as the period from the first dose of study drug in the 4-mg Maintenance Period to the onset of first seizure. A seizure was a brief episode of signs or symptoms due to abnormal excessive or synchronous neuronal activity in the brain. mITT set: group of subjects who signed informed consent, received at least 1 dose of study drug, who entered the 4 mg Maintenance Period and had at least 1 postdose primary efficacy measurement in the 26-week Maintenance Period. 99999 refers to data not reported as median time was not estimable because less than (<) 50 percent (%) of subjects experienced a POS seizure event.
    End point type
    Secondary
    End point timeframe
    From the first dose of study drug in the Maintenance Period (Week 6) up to the first seizure onset (up to 150 weeks)
    End point values
    Perampanel
    Number of subjects analysed
    73
    Units: hours
        median (full range (min-max))
    99999 (99999 to 99999)
    No statistical analyses for this end point

    Secondary: Time to Onset of First Seizure From the First dose of Study Drug in the Maintenance Period of Last Evaluated Dose of 4 or 8 mg Perampanel

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    End point title
    Time to Onset of First Seizure From the First dose of Study Drug in the Maintenance Period of Last Evaluated Dose of 4 or 8 mg Perampanel
    End point description
    Time to onset of first seizure was defined as the period from the first dose of study drug in the 4 mg Maintenance Period to the onset of first seizure. A seizure was a brief episode of signs or symptoms due to abnormal excessive or synchronous neuronal activity in the brain. mITT set: group of subjects who signed informed consent, received at least 1 dose of study drug, who entered the 4 mg Maintenance Period and had at least 1 postdose primary efficacy measurement in the 26-week Maintenance Period. 99999 refers to data not reported as median time was not estimable because <50 % of subjects experienced a POS seizure event.
    End point type
    Secondary
    End point timeframe
    From the first dose of study drug in the Maintenance Period (Week 6) up to the first seizure onset (up to 150 weeks)
    End point values
    Perampanel
    Number of subjects analysed
    73
    Units: hours
        median (full range (min-max))
    99999 (99999 to 99999)
    No statistical analyses for this end point

    Secondary: Time to Withdrawal From the First Dose of Study Drug in the Maintenance Period of 4 mg Perampanel

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    End point title
    Time to Withdrawal From the First Dose of Study Drug in the Maintenance Period of 4 mg Perampanel
    End point description
    Time to withdrawal from the study was defined as the period from the first dose of study drug in the 4-mg Maintenance Period to the date of withdrawal from study, regardless of reason. mITT set: group of subjects who signed informed consent, received at least 1 dose of study drug, who entered the 4-mg Maintenance Period and had at least 1 postdose primary efficacy measurement in the 26-week Maintenance Period. 99999 refers to median time was not estimable because <50% of subjects discontinued the study.
    End point type
    Secondary
    End point timeframe
    From the first dose of study drug in the Maintenance Period (Week 6) up to the date of first withdrawal, regardless of reason (up to 150 weeks)
    End point values
    Perampanel
    Number of subjects analysed
    73
    Units: hours
        median (full range (min-max))
    99999 (99999 to 99999)
    No statistical analyses for this end point

    Secondary: Time to Withdrawal From the First Dose of Study Drug in the Maintenance Period of Last Evaluated Dose of 4 or 8 mg Perampanel

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    End point title
    Time to Withdrawal From the First Dose of Study Drug in the Maintenance Period of Last Evaluated Dose of 4 or 8 mg Perampanel
    End point description
    Time to withdrawal from the study was defined as the period from the first dose of study drug in the 4-mg Maintenance Period to the date of withdrawal from study, regardless of reason. mITT set: group of subjects who signed informed consent, received at least 1 dose of study drug, who entered the 4-mg Maintenance Period and had at least 1 postdose primary efficacy measurement in the 26-week Maintenance Period. 99999 refers to median time was not estimable because <50% of subjects discontinued the study.
    End point type
    Secondary
    End point timeframe
    From the first dose of study drug in the Maintenance Period (Week 6) up to the date of first withdrawal, regardless of reason (up to 150 weeks)
    End point values
    Perampanel
    Number of subjects analysed
    73
    Units: hours
        median (full range (min-max))
    99999 (99999 to 99999)
    No statistical analyses for this end point

    Secondary: Number of Subjects With Any Treatment-emergent Adverse Events (TEAEs), Treatment-emergent Serious Adverse Event (TESAEs), and TEAEs Leading to Discontinuation of the Study Drug

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    End point title
    Number of Subjects With Any Treatment-emergent Adverse Events (TEAEs), Treatment-emergent Serious Adverse Event (TESAEs), and TEAEs Leading to Discontinuation of the Study Drug
    End point description
    The safety analysis set was the group of subjects who signed informed consent, received at least one dose of study drug and had at least one postdose safety assessment.
    End point type
    Secondary
    End point timeframe
    From baseline up to 28 days after last dose of study drug (up to 160 weeks)
    End point values
    Perampanel
    Number of subjects analysed
    89
    Units: subjects
        TEAEs
    74
        TESAEs
    13
        TEAEs leading to discontinuation of study drug
    9
    No statistical analyses for this end point

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    From baseline up to 28 days after last dose of study drug (up to 160 weeks)
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    21.0
    Reporting groups
    Reporting group title
    Perampanel
    Reporting group description
    Subjects received 2 mg of perampanel tablets orally QD for up to 2 weeks, then dose was up-titrated to 4 mg QD for 4 weeks in 4-mg Titration Period (6 Weeks) followed by 4 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). If a subject experienced seizures during 4-mg Maintenance Period, the subject was transitioned to 8-mg Titration Period based on the subject’s safety and tolerability. In 8-mg Titration Period (4 weeks), subjects received 6 mg of perampanel tablets orally QD for 2 weeks and up-titrated to 8 mg QD for 2 weeks followed by 8 mg of perampanel tablets orally QD in Maintenance Period (26 weeks). Subjects who completed Treatment Phase or who ended Maintenance Period of Treatment Phase due to insufficient efficacy or intolerability, and who agreed to continue perampanel monotherapy entered Extension Phase and received perampanel until insufficient seizure control or lack of tolerability, or initiation of additional AEDs.

    Serious adverse events
    Perampanel
    Total subjects affected by serious adverse events
         subjects affected / exposed
    13 / 89 (14.61%)
         number of deaths (all causes)
    0
         number of deaths resulting from adverse events
    Injury, poisoning and procedural complications
    Humerus fracture
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Cardiac disorders
    Coronary artery stenosis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Nervous system disorders
    Epilepsy
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences causally related to treatment / all
    0 / 4
         deaths causally related to treatment / all
    0 / 0
    Headache
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Intracranial aneurysm
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Partial seizures with secondary generalisation
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Postictal state
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Status epilepticus
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    General disorders and administration site conditions
    Malaise
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Respiratory, thoracic and mediastinal disorders
    Pulmonary sarcoidosis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Musculoskeletal and connective tissue disorders
    Osteoarthritis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Infections and infestations
    Influenza
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Otitis media chronic
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 0%
    Non-serious adverse events
    Perampanel
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    73 / 89 (82.02%)
    Vascular disorders
    Haemorrhage
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Surgical and medical procedures
    Tooth extraction
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    General disorders and administration site conditions
    Fatigue
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Feeling abnormal
         subjects affected / exposed
    4 / 89 (4.49%)
         occurrences all number
    4
    Chest discomfort
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Gait disturbance
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Chest pain
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Oedema peripheral
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Pyrexia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Malaise
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Immune system disorders
    Seasonal allergy
         subjects affected / exposed
    3 / 89 (3.37%)
         occurrences all number
    3
    Reproductive system and breast disorders
    Dysmenorrhoea
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    2
    Benign prostatic hyperplasia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Menorrhagia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Respiratory, thoracic and mediastinal disorders
    Nasal congestion
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Asthma
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Cough
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Dyspnoea
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Epistaxis
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    3
    Rhinitis allergic
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Rhinorrhoea
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    2
    Respiratory symptom
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Psychiatric disorders
    Affect lability
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Anxiety
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Insomnia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    2
    Depressed mood
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Irritability
         subjects affected / exposed
    3 / 89 (3.37%)
         occurrences all number
    3
    Depression
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Emotional disorder
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Investigations
    Blood creatine phosphokinase increased
         subjects affected / exposed
    4 / 89 (4.49%)
         occurrences all number
    4
    Blood cholesterol increased
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Liver function test increased
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Blood lactate dehydrogenase increased
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Blood uric acid increased
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Electrocardiogram QT prolonged
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Weight increased
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Hepatic enzyme increased
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Thyroid function test abnormal
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Injury, poisoning and procedural complications
    Foot Fracture
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Ankle fracture
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Contusion
         subjects affected / exposed
    3 / 89 (3.37%)
         occurrences all number
    3
    Fall
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Procedural pain
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Laceration
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Ligament sprain
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Tooth fracture
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Cardiac disorders
    Myocardial ischaemia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Nervous system disorders
    Amnesia
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Head discomfort
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Aphasia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Headache
         subjects affected / exposed
    12 / 89 (13.48%)
         occurrences all number
    15
    Disturbance in attention
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    2
    Hypersomnia
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Memory impairment
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Dizziness
         subjects affected / exposed
    34 / 89 (38.20%)
         occurrences all number
    40
    Dysarthria
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Nervous system disorder
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Epilepsy
         subjects affected / exposed
    4 / 89 (4.49%)
         occurrences all number
    4
    Paraesthesia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Postictal headache
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    4
    Somnolence
         subjects affected / exposed
    12 / 89 (13.48%)
         occurrences all number
    13
    Syncope
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Tension headache
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    seizure
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Hypoaesthesia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Blood and lymphatic system disorders
    Anaemia
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Ear and labyrinth disorders
    Auditory disorder
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Meniere’s disease
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Hypoacusis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Vertigo
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Vestibular disorder
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Eye disorders
    Blepharitis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Conjunctivitis allergic
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    2
    Asthenopia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Posterior capsule opacification
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Gastrointestinal disorders
    Abdominal discomfort
         subjects affected / exposed
    3 / 89 (3.37%)
         occurrences all number
    3
    Abdominal pain
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    3
    Constipation
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Dental caries
         subjects affected / exposed
    3 / 89 (3.37%)
         occurrences all number
    3
    Gastric ulcer
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Diarrhoea
         subjects affected / exposed
    4 / 89 (4.49%)
         occurrences all number
    6
    Dyspepsia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Stomatitis
         subjects affected / exposed
    3 / 89 (3.37%)
         occurrences all number
    4
    Gingival pain
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Toothache
         subjects affected / exposed
    3 / 89 (3.37%)
         occurrences all number
    7
    Aphthous ulcer
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Gastritis erosive
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Gingival atrophy
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Vomiting
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Hepatobiliary disorders
    Hepatic steatosis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Skin and subcutaneous tissue disorders
    Acne
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    2
    Photosensitivity reaction
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Psoriasis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Dry skin
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Musculoskeletal and connective tissue disorders
    Back pain
         subjects affected / exposed
    3 / 89 (3.37%)
         occurrences all number
    3
    Intervertebral disc protrusion
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Neck pain
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Muscle spasms
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Musculoskeletal pain
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Musculoskeletal stiffness
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Spinal osteoarthritis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Tenosynovitis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Myalgia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Infections and infestations
    Angular cheilitis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Gingivitis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Enterocolitis viral
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Helicobacter infection
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Gastroenteritis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Hordeolum
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Nasopharyngitis
         subjects affected / exposed
    19 / 89 (21.35%)
         occurrences all number
    42
    Influenza
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Pharyngitis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Otitis externa
         subjects affected / exposed
    2 / 89 (2.25%)
         occurrences all number
    2
    Otitis media chronic
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Sinusitis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Skin infection
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Tinea versicolour
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Trichophytosis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Tonsillitis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Upper respiratory tract infection
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Urethritis gonococcal
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Pyelonephritis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Otitis media
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Periodontitis
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Paronychia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Metabolism and nutrition disorders
    Decreased appetite
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Hyperkalaemia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Hyperlipidaemia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Hypercholesterolaemia
         subjects affected / exposed
    1 / 89 (1.12%)
         occurrences all number
    1
    Type 2 diabetes mellitus
         subjects affected / exposed
    1 / 89 (1.12%)
         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
    04 Dec 2017
    Amendment 02: The purpose of this amendment was to add exclusion of subject who was diagnosed with dementia to clarify that dementia patients were not eligible in this study, concomitant use of antidementia drugs was prohibited and expand prohibited concomitant therapy to neuromodulation therapy (including vagal nerve stimulation and transcranial magnetic stimulation).
    05 Jul 2018
    Amendment 04: The purpose of this amendment was to add “Analysis at primary endpoint achievement” to conduct analysis at if the primary endpoint is achieved.
    22 Feb 2019
    Amendment 05: The purpose of this amendment was to add the End of Study Visit to clarify how to switch to the commercial product promptly.

    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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