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    Clinical Trial Results:
    A Multi-center, Single-arm Study of Enzalutamide in Patients With Progressive Metastatic Castration-resistant Prostate Cancer Previously Treated With Abiraterone Acetate

    Summary
    EudraCT number
    2013-002271-17
    Trial protocol
    BE   DE   GB   ES  
    Global end of trial date
    29 Sep 2017

    Results information
    Results version number
    v1
    This version publication date
    25 Jul 2018
    First version publication date
    25 Jul 2018
    Other versions
    v2

    Trial information

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    Trial identification
    Sponsor protocol code
    9785-CL-0410
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT02116582
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Astellas Pharma Global Development, Inc.
    Sponsor organisation address
    1 Astellas Way, Northbrook, United States, 60062
    Public contact
    Clinical Trial Disclosure, Astellas Pharma Global Development, Inc., Astellas.resultsdisclosure@astellas.com
    Scientific contact
    Clinical Trial Disclosure, Astellas Pharma Global Development, Inc., Astellas.resultsdisclosure@astellas.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
    29 Sep 2017
    Is this the analysis of the primary completion data?
    No
    Global end of trial reached?
    Yes
    Global end of trial date
    29 Sep 2017
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    The primary objective of this study was to evaluate Radiographic Progression-free Survival (rPFS) in participants with progressive metastatic castration-resistant prostate cancer (mCRPC) previously treated with abiraterone acetate.
    Protection of trial subjects
    This clinical study was written, conducted and reported in accordance with the protocol, International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH) Good Clinical Practice (GCP) Guidelines, and applicable local regulations, including the European Directive 2001/20/EC, on the protection of human rights, and with the ethical principles that have their origin in the Declaration of Helsinki. Astellas ensures that the use and disclosure of protected health information (PHI) obtained during a research study complies with the federal, national and/or regional legislation related to the privacy and protection of personal information.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    23 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
    Belgium: 15
    Country: Number of subjects enrolled
    France: 47
    Country: Number of subjects enrolled
    Germany: 55
    Country: Number of subjects enrolled
    Spain: 32
    Country: Number of subjects enrolled
    United Kingdom: 66
    Worldwide total number of subjects
    215
    EEA total number of subjects
    215
    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)
    24
    From 65 to 84 years
    176
    85 years and over
    15

    Subject disposition

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    Recruitment
    Recruitment details
    Male participants with progressive metastatic castration-resistant prostate cancer were enrolled in this study.

    Pre-assignment
    Screening details
    A total of 272 participants were screened for enrollment & signed an informed consent form, & 57 of those screen failed. The primary reason for screening failure was not fulfilling inclusion/exclusion criteria (52 participants, 19.1%), followed by withdrawal (5 participants, 1.8%).

    Period 1
    Period 1 title
    Overall Study (overall period)
    Is this the baseline period?
    Yes
    Allocation method
    Non-randomised - controlled
    Blinding used
    Not blinded

    Arms
    Arm title
    Enzalutamide
    Arm description
    Participants received 160 mg of enzalutamide orally once daily until they experienced an adverse event, disease progression, started new anti-cancer therapy, withdrew consent, or other protocol-specified criteria.
    Arm type
    Experimental

    Investigational medicinal product name
    Enzalutamide
    Investigational medicinal product code
    MDV3100
    Other name
    Xtandi
    Pharmaceutical forms
    Capsule, soft
    Routes of administration
    Oral use
    Dosage and administration details
    Participants received 160 mg of enzalutamide orally once daily.

    Number of subjects in period 1
    Enzalutamide
    Started
    215
    Treated
    214
    Completed
    0
    Not completed
    215
         Transitioned to 9785-CL-0123
    12
         Adverse Event
    22
         Death
    9
         Progressive Disease
    148
         Miscellaneous
    11
         Withdrawal by Subject
    8
         Protocol Violation
    3
         Enrolled but Never Received Study Drug
    1
         Lost to follow-up
    1

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Enzalutamide
    Reporting group description
    Participants received 160 mg of enzalutamide orally once daily until they experienced an adverse event, disease progression, started new anti-cancer therapy, withdrew consent, or other protocol-specified criteria.

    Reporting group values
    Enzalutamide Total
    Number of subjects
    215
    Age categorical
    Units: Subjects
    Age continuous
    The analysis population for this baseline measure consisted of all participants who were enrolled in the study.
    Units: years
        log mean (standard deviation)
    73.2 ( 7.6 ) -
    Gender categorical
    The analysis population for this baseline measure consisted of all participants who were enrolled in the study.
    Units:
        Male
    215 215
        Female
    0 0
    Race/Ethnicity
    Race was not collected in France, because of country regulations. Ethnicity was not collected for this study. The analysis population for this baseline measure consisted of all participants who were enrolled in the study.
    Units: Subjects
        White
    165 165
        Black or African American
    2 2
        Other
    1 1
        Not Reported
    47 47

    End points

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    End points reporting groups
    Reporting group title
    Enzalutamide
    Reporting group description
    Participants received 160 mg of enzalutamide orally once daily until they experienced an adverse event, disease progression, started new anti-cancer therapy, withdrew consent, or other protocol-specified criteria.

    Primary: Radiographic progression-free survival (rPFS)

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    End point title
    Radiographic progression-free survival (rPFS) [1]
    End point description
    Radiographic PFS, was defined as the time from first dose to the first objective evidence of radiographic disease progression or death from any cause, whichever occurred first. For patients with no documented progression event, it was censored on the date of the last disease assessment performed prior to the analysis data cut-off point. Radiographic progression (RP) for soft tissue disease was defined by Response Evaluation Criteria in Solid Tumors (RECIST) V1.1 criteria. RP for bone disease was determined according to the consensus guidelines of a modification of the Prostate Cancer Clinical Trials Working Group 2 (PCWG2) guidelines. The 50th percentile of Kaplan-Meier (KM) estimates was used as the estimate of the rPFS median. A 2-sided 95% Confidence Interval (CI) was provided for this estimate using the Brookmeyer & Crowley (BC) method. The analysis population consisted of the safety analysis set (SAF) which consisted of all participants who took at least 1 dose of study drug.
    End point type
    Primary
    End point timeframe
    From the first dose of study drug administration up to treatment discontinuation or the data cut-off date of 08 May 2016, whichever occurred first; the median duration of treatment was 5.7 months.
    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: All variables were presented using descriptive statistics only. No formal statistical analysis was conducted.
    End point values
    Enzalutamide
    Number of subjects analysed
    214
    Units: Months
        median (confidence interval 95%)
    8.1 (6.11 to 8.28)
    No statistical analyses for this end point

    Secondary: Overall Survival (OS)

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    End point title
    Overall Survival (OS)
    End point description
    OS was defined as the time from first dose to death from any cause. All events of death were included. If patients discontinued study drug before the analysis data cut-off point, only OS status was assessed every 12 weeks until the data cut-off point date or until death, whichever occurred first. For patients who were alive at the time of the analysis data cut-off point, the OS time was censored on the last date the patient was known to be alive. Death from any cause was included, regardless of whether the event occurred while the patient was still taking study drug or after the patient discontinued study drug. OS median was estimated using the KM method. A 2-sided 95% CI was provided for this estimate using the BC method. The analysis population consisted of the SAF. Data not available is denoted as "99999."
    End point type
    Secondary
    End point timeframe
    From the first dose of study drug administration up to the data cut-off date of 08 May 2016; up to 2 years.
    End point values
    Enzalutamide
    Number of subjects analysed
    214
    Units: Months
        median (confidence interval 95%)
    99999 (18.14 to 99999)
    No statistical analyses for this end point

    Secondary: Percentage of Participants with a Prostate-specific Antigen (PSA) Response

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    End point title
    Percentage of Participants with a Prostate-specific Antigen (PSA) Response
    End point description
    PSA response was defined as at least a 50% decrease from baseline in PSA, and was a binary variable for achieving this criteria (or not) based on the lowest PSA value observed postbaseline. Participants with no postbaseline PSA value were regarded as non-responders. 95% CI for PSA response rate was computed using the Clopper-Pearson method based on the exact binomial distribution. The analysis population consisted of the SAF.
    End point type
    Secondary
    End point timeframe
    From the first dose of study drug administration up to the data cut-off date for end-of-study completion 29 Sep 2017; the median duration of treatment was 5.7 months.
    End point values
    Enzalutamide
    Number of subjects analysed
    214
    Units: Percentage of participants
        number (confidence interval 95%)
    22.0 (16.61 to 28.11)
    No statistical analyses for this end point

    Secondary: Time to PSA progression

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    End point title
    Time to PSA progression
    End point description
    The time to PSA progression was calculated as the time interval from the date of first dose to the date of first observation of PSA progression. PSA progression was defined as a ≥ 25% increase and an absolute increase of ≥ 2 μg/L (i.e., 2 ng/mL or more) above the nadir or above the baseline value for patients who did not have a decline in PSA postbaseline values, and which was confirmed by a second consecutive value obtained at least 3 or more weeks later (i.e., a confirmed rising trend) (PCWG2 criteria). The 50th percentile of KM estimates was used as the estimate of the time to PSA progression median. A 2-sided 95% CI was provided for this estimate using the BC method. The analysis population consisted of the SAF.
    End point type
    Secondary
    End point timeframe
    From the first dose of study drug administration up to the data cut-off date of 08 May 2016; the median duration of treatment was 5.7 months.
    End point values
    Enzalutamide
    Number of subjects analysed
    214
    Units: Months
        median (confidence interval 95%)
    5.7 (5.55 to 5.78)
    No statistical analyses for this end point

    Secondary: Number of Participants with Adverse Events (AEs)

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    End point title
    Number of Participants with Adverse Events (AEs)
    End point description
    A treatment-emergent adverse event (TEAE) was defined as an adverse event occurring or worsening between the start of study treatment date and the latest date of 30 days after the last dose date or the 30-day follow-up visit date, and not later than the data cut-off date or the date of death. AEs, including abnormal clinical laboratory values, were graded using the National Cancer Institute-Common Terminology Criteria for Adverse Events (NCI-CTCAE) guidelines (V4.03). The analysis population consisted of the SAF.
    End point type
    Secondary
    End point timeframe
    From the first dose of study drug administration up to data cut-off date for end-of-study completion (29 Sep 2017); the median duration of treatment was 5.7 months.
    End point values
    Enzalutamide
    Number of subjects analysed
    214
    Units: Participants
        Any TEAE
    199
        NCI-CTCAE Grade ≥3
    95
        Study Drug-Related
    127
        Study Drug-Related NCI-CTCAE Grade ≥3
    18
        TEAEs with Death as an Outcome
    22
        Serious Adverse Event (SAE)
    82
        Study Drug-related SAE
    8
        TEAEs Leading to Study Drug Discontinuation
    76
        Study Drug-Related TEAEs Leading to Drug Disc.
    23
    No statistical analyses for this end point

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    From the first dose of study drug administration up to 30 days after the last dose or the 30 day follow-up visit date, up to the data cut-of date for end-of-study completion (29 Sep 2017).
    Adverse event reporting additional description
    The total number of deaths (all causes) includes deaths reported after the time frame above.
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    16.1
    Reporting groups
    Reporting group title
    Enzalutamide Total
    Reporting group description
    Participants received 160 mg of enzalutamide orally once daily until they experienced an adverse event, disease progression, started new anti-cancer therapy, withdrew consent, or other protocol-specified criteria.

    Serious adverse events
    Enzalutamide Total
    Total subjects affected by serious adverse events
         subjects affected / exposed
    82 / 214 (38.32%)
         number of deaths (all causes)
    73
         number of deaths resulting from adverse events
    22
    Neoplasms benign, malignant and unspecified (incl cysts and polyps)
    Adenocarcinoma of colon
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Basal cell carcinoma
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Bladder transitional cell carcinoma
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Cancer pain
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Malignant neoplasm progression
         subjects affected / exposed
    13 / 214 (6.07%)
         occurrences causally related to treatment / all
    0 / 15
         deaths causally related to treatment / all
    0 / 9
    Metastases to central nervous system
         subjects affected / exposed
    2 / 214 (0.93%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Metastases to liver
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Metastases to lymph nodes
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Metastases to meninges
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Metastatic pain
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Oral neoplasm benign
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Transitional cell carcinoma
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Ureteric cancer
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Vascular disorders
    Peripheral arterial occlusive disease
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 1
    Surgical and medical procedures
    Ileostomy closure
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Implantable defibrillator insertion
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Shoulder arthroplasty
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    General disorders and administration site conditions
    Asthenia
         subjects affected / exposed
    3 / 214 (1.40%)
         occurrences causally related to treatment / all
    0 / 3
         deaths causally related to treatment / all
    0 / 0
    Death
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Device occlusion
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    General physical health deterioration
         subjects affected / exposed
    10 / 214 (4.67%)
         occurrences causally related to treatment / all
    0 / 13
         deaths causally related to treatment / all
    0 / 3
    Inflammation
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Malaise
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Pain
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Pyrexia
         subjects affected / exposed
    2 / 214 (0.93%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Respiratory, thoracic and mediastinal disorders
    Chronic obstructive pulmonary disease
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Dyspnoea
         subjects affected / exposed
    3 / 214 (1.40%)
         occurrences causally related to treatment / all
    0 / 4
         deaths causally related to treatment / all
    0 / 0
    Epiglottic mass
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Lung disorder
         subjects affected / exposed
    2 / 214 (0.93%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Pneumonitis
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Pulmonary embolism
         subjects affected / exposed
    5 / 214 (2.34%)
         occurrences causally related to treatment / all
    1 / 5
         deaths causally related to treatment / all
    0 / 1
    Pulmonary hypertension
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Psychiatric disorders
    Anxiety
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Confusional state
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Disorientation
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Investigations
    Monoclonal immunoglobulin present
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Injury, poisoning and procedural complications
    Fall
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Lumbar vertebral fracture
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Procedural intestinal perforation
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Rib fracture
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Subdural haematoma
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 1
    Cardiac disorders
    Acute coronary syndrome
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Acute myocardial infarction
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Cardiac failure
         subjects affected / exposed
    3 / 214 (1.40%)
         occurrences causally related to treatment / all
    0 / 3
         deaths causally related to treatment / all
    0 / 1
    Cardiovascular disorder
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Left ventricular dysfunction
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Mitral valve incompetence
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Nervous system disorders
    Aphasia
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Cerebral infarction
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    1 / 1
    Encephalitis
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 1
    Loss of consciousness
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Monoparesis
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Nerve root compression
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Spinal cord compression
         subjects affected / exposed
    7 / 214 (3.27%)
         occurrences causally related to treatment / all
    0 / 8
         deaths causally related to treatment / all
    0 / 0
    Syncope
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Transient ischaemic attack
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Vertebral artery thrombosis
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Blood and lymphatic system disorders
    Anaemia
         subjects affected / exposed
    5 / 214 (2.34%)
         occurrences causally related to treatment / all
    0 / 6
         deaths causally related to treatment / all
    0 / 0
    Anaemia of malignant disease
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Disseminated intravascular coagulation
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Neutropenia
         subjects affected / exposed
    2 / 214 (0.93%)
         occurrences causally related to treatment / all
    5 / 6
         deaths causally related to treatment / all
    0 / 0
    Thrombocytopenia
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Gastrointestinal disorders
    Abdominal distension
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Constipation
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Diarrhoea
         subjects affected / exposed
    2 / 214 (0.93%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Ileus
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Intestinal obstruction
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Large intestinal obstruction
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Rectal haemorrhage
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Vomiting
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Skin and subcutaneous tissue disorders
    Drug eruption
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Renal and urinary disorders
    Bladder tamponade
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Haematuria
         subjects affected / exposed
    7 / 214 (3.27%)
         occurrences causally related to treatment / all
    0 / 8
         deaths causally related to treatment / all
    0 / 0
    Hydronephrosis
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Renal colic
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Renal failure
         subjects affected / exposed
    2 / 214 (0.93%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Renal failure acute
         subjects affected / exposed
    5 / 214 (2.34%)
         occurrences causally related to treatment / all
    0 / 8
         deaths causally related to treatment / all
    0 / 1
    Ureteric stenosis
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Urinary incontinence
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Urinary retention
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Musculoskeletal and connective tissue disorders
    Arthralgia
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Back pain
         subjects affected / exposed
    3 / 214 (1.40%)
         occurrences causally related to treatment / all
    0 / 4
         deaths causally related to treatment / all
    0 / 0
    Bone pain
         subjects affected / exposed
    4 / 214 (1.87%)
         occurrences causally related to treatment / all
    0 / 4
         deaths causally related to treatment / all
    0 / 0
    Groin pain
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Intervertebral disc protrusion
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Neck pain
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Osteoarthritis
         subjects affected / exposed
    2 / 214 (0.93%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Osteonecrosis of jaw
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Pain in extremity
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Spinal disorder
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Infections and infestations
    Bronchopneumonia
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Cellulitis
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Dental fistula
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Device related infection
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Enterobacter sepsis
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Erysipelas
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Gastroenteritis viral
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Lower respiratory tract infection
         subjects affected / exposed
    2 / 214 (0.93%)
         occurrences causally related to treatment / all
    0 / 4
         deaths causally related to treatment / all
    0 / 1
    Pneumonia
         subjects affected / exposed
    4 / 214 (1.87%)
         occurrences causally related to treatment / all
    0 / 4
         deaths causally related to treatment / all
    0 / 1
    Pulmonary sepsis
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 1
    Pyelonephritis
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Urinary tract infection
         subjects affected / exposed
    2 / 214 (0.93%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Metabolism and nutrition disorders
    Acidosis
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Decreased appetite
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Fluid retention
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Hypercalcaemia
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Hyperglycaemia
         subjects affected / exposed
    1 / 214 (0.47%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 5%
    Non-serious adverse events
    Enzalutamide Total
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    182 / 214 (85.05%)
    Investigations
    Weight decreased
         subjects affected / exposed
    26 / 214 (12.15%)
         occurrences all number
    28
    Vascular disorders
    Hot flush
         subjects affected / exposed
    12 / 214 (5.61%)
         occurrences all number
    12
    Hypertension
         subjects affected / exposed
    19 / 214 (8.88%)
         occurrences all number
    22
    Nervous system disorders
    Dizziness
         subjects affected / exposed
    14 / 214 (6.54%)
         occurrences all number
    14
    Blood and lymphatic system disorders
    Anaemia
         subjects affected / exposed
    23 / 214 (10.75%)
         occurrences all number
    36
    General disorders and administration site conditions
    Asthenia
         subjects affected / exposed
    38 / 214 (17.76%)
         occurrences all number
    51
    Fatigue
         subjects affected / exposed
    72 / 214 (33.64%)
         occurrences all number
    89
    Oedema peripheral
         subjects affected / exposed
    18 / 214 (8.41%)
         occurrences all number
    19
    Gastrointestinal disorders
    Constipation
         subjects affected / exposed
    28 / 214 (13.08%)
         occurrences all number
    32
    Diarrhoea
         subjects affected / exposed
    27 / 214 (12.62%)
         occurrences all number
    29
    Nausea
         subjects affected / exposed
    32 / 214 (14.95%)
         occurrences all number
    38
    Vomiting
         subjects affected / exposed
    11 / 214 (5.14%)
         occurrences all number
    17
    Respiratory, thoracic and mediastinal disorders
    Dyspnoea
         subjects affected / exposed
    11 / 214 (5.14%)
         occurrences all number
    12
    Psychiatric disorders
    Insomnia
         subjects affected / exposed
    12 / 214 (5.61%)
         occurrences all number
    12
    Renal and urinary disorders
    Haematuria
         subjects affected / exposed
    15 / 214 (7.01%)
         occurrences all number
    18
    Musculoskeletal and connective tissue disorders
    Arthralgia
         subjects affected / exposed
    34 / 214 (15.89%)
         occurrences all number
    40
    Back pain
         subjects affected / exposed
    37 / 214 (17.29%)
         occurrences all number
    41
    Bone pain
         subjects affected / exposed
    27 / 214 (12.62%)
         occurrences all number
    34
    Muscular weakness
         subjects affected / exposed
    12 / 214 (5.61%)
         occurrences all number
    16
    Musculoskeletal pain
         subjects affected / exposed
    23 / 214 (10.75%)
         occurrences all number
    25
    Pain in extremity
         subjects affected / exposed
    25 / 214 (11.68%)
         occurrences all number
    29
    Metabolism and nutrition disorders
    Decreased appetite
         subjects affected / exposed
    53 / 214 (24.77%)
         occurrences all number
    65

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    15 Oct 2014
    The changes include: ● Updated definition of bone disease progression: Provided an exception for the requirement of a confirmatory scan if progression after week 13 showed unequivocal evidence of bone disease progression (i.e., if multiple new lesions of uptake were observed). ● Updated inclusion criteria numbers 4 and 6: Added timing of bone scan and CT/MRI to allow historical scans within ≤ 30 days prior to day 1 if these were already available. ● Updated inclusion criterion number 7: Changed minimum time period of prior treatment with abiraterone acetate from 6 months to 24 weeks and clarified previous treatment of abiraterone acetate should be within its approved label indication. ● Clarified OS assessment before the data analysis cut-off point: Provided 2 different scenarios in the flow chart and reworded (Section 5.3.2 of the protocol to clarify follow-up assessments for patients who discontinued before versus after the analysis data cut-off point. ● The schedule of assessments was updated: Updated the schedule of assessments to reflect the revisions in substantial amendment 1. ● Updated the timing of AE collection: AEs were collected from time of informed consent instead of from time of study drug administration on day 1. ● Updated sponsor contact information. ● Updated planned study period: The planned study period moved 1 quarter from Q1 2014-Q1 2016 to Q2 2014-Q2 2016. ● Updated planned total number of study centers: The planned total number of study centers was updated from approximately 40 to 55 centers in Europe. ● Clarified frequency of safety assessment after data analysis cut-off point: Clarified the frequency of the safety assessment after data analysis cut-off point as 24 weeks rather than 6 months. ● Updated the requirements of BPI-SF: Allowed for a repeat of the BPI-SF once during the screening period.
    21 Jun 2016
    The changes include: ● Revised the study design: Subjects who were free of radiographic progression, continuing to derive clinical benefit from treatment with enzalutamide based on the investigator’s medical opinion and did not meet any of the treatment discontinuation criteria as outlined in Section 6.1 of the protocol may have been eligible to continue receiving treatment with enzalutamide in open-label extension Study 9785-CL-0123 (NCT02960022) upon approval of the 9785-CL-0123 protocol and activation of this study at the participating institution. Subjects who chose not to participate or were not eligible for Study 9785-CL-0123 completed their participation in Study 9785-CL-0410 by completing the safety follow-up visit upon activation of Study 9785-CL-0123 at the institution. ● Updated sponsor contact information: Details for the Astellas Medical Expert/Medical Monitor were updated. ● Updated planned study period: The planned study period was updated from Q2 2016 to Q1 2017. ● Minor administrative-type changes were made (e.g., typos, punctuation, formatting). These minor changes were not detailed in the Summary of Changes section of this amendment.

    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.
    For participants on treatment after the primary analysis data cut-off point (08 May 2016), only AEs were assessed every 24 weeks until treatment discontinuation or death, this was not required for those that enrolled into 9785-CL-0123 (NCT02960022).
    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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