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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/ct2/show/NCT02677896
Registration number
NCT02677896
Ethics application status
Date submitted
5/02/2016
Date registered
9/02/2016
Date last updated
23/05/2024
Titles & IDs
Public title
A Study of Enzalutamide Plus Androgen Deprivation Therapy (ADT) Versus Placebo Plus ADT in Patients With Metastatic Hormone Sensitive Prostate Cancer (mHSPC)
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Scientific title
A Multinational, Phase 3, Randomized, Double-blind, Placebo-controlled Efficacy and Safety Study of Enzalutamide Plus Androgen Deprivation Therapy (ADT) Versus Placebo Plus ADT in Patients With Metastatic Hormone Sensitive Prostate Cancer (mHSPC)
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Secondary ID [1]
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2015-003869-28
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Secondary ID [2]
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9785-CL-0335
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Universal Trial Number (UTN)
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Trial acronym
ARCHES
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Metastatic Hormone Sensitive Prostate Cancer
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Condition category
Condition code
Cancer
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Prostate
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Inflammatory and Immune System
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Allergies
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Drugs - Enzalutamide
Treatment: Drugs - Placebo
Experimental: Enzalutamide + Androgen Deprivation Therapy (ADT) - Participants received 160 mg enzalutamide orally once daily during double-blind treatment period until radiographic progression was documented or until the participants started an investigational agent or new therapy for treatment of prostate cancer or until any other discontinuation criterion was met. Eligible participants who received enzalutamide during double-blind treatment period and provided informed consent to take part in open-label period continued to receive 160 mg enzalutamide orally once daily in open-label period until disease progression, unacceptable toxicity or any other discontinuation criteria were met. ADT (either bilateral orchiectomy or Luteinizing hormone-releasing hormone (LHRH) agonist/antagonist) was maintained during study treatment as per standard of care and provided by the site's pharmacy stock.
Placebo Comparator: Placebo + Androgen Deprivation Therapy (ADT) - Participants received matching placebo orally once daily during double-blind treatment period until radiographic progression was documented or until the participants started an investigational agent or new therapy for treatment of prostate cancer or until any other discontinuation criterion was met. ADT (either bilateral orchiectomy or LHRH agonist/antagonist) was maintained during study treatment as per standard of care and provided by the site's pharmacy stock.
Experimental: Placebo followed by Enzalutamide - Eligible participants who received enzalutamide matching placebo during double-blind treatment period and provided informed consent to take part in open-label period switched to receive 160 mg enzalutamide orally once daily in open-label period until disease progression, unacceptable toxicity or any other discontinuation criteria were met. ADT (either bilateral orchiectomy or LHRH agonist/antagonist) was maintained during study treatment as per standard of care and provided by the site's pharmacy stock.
Treatment: Drugs: Enzalutamide
Oral
Treatment: Drugs: Placebo
Oral
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Intervention code [1]
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Treatment: Drugs
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Radiographic Progression-Free Survival (rPFS) Based on Independent Central Review (ICR) of Bone Scan According to Prostate Cancer Clinical Trials Working Group 2 (PCWG2) Criteria
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Assessment method [1]
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rPFS was calculated as the time from the date of randomization to the first objective evidence of radiographic progression disease (rPD) at any time or death up to 24 weeks after study drug discontinuation without documented radiographic progression, whichever occurred first. rPD was defined as progressive disease by Response Evaluation Criteria in Solid Tumors version 1.1 for soft tissue disease or by appearance of 2 or more new lesions on bone scan compared to baseline or week 13 according to PCWG2 criteria, as assessed by ICR or death. In participants with no rPFS event, rPFS was censored on the date of last evaluable radiographic assessment prior to the data analysis cutoff date. In participants with no baseline radiographic assessment, participants with no postbaseline radiographic assessments and participants with all postbaseline radiographic assessments documented as "not evaluable (NE)," rPFS was censored on the date of randomization.
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Timepoint [1]
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From randomization until the data cut-off date of 14 October 2018; maximum duration of treatment was 26.6 months
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Primary outcome [2]
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rPFS Based on ICR of Bone Scan According to Protocol Assessment Criteria
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Assessment method [2]
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rPFS was calculated as the time from the date of randomization to the first objective evidence of radiographic progression disease (rPD) at any time or death up to 24 weeks after study drug discontinuation without documented radiographic progression, whichever occurred first. rPD was defined as progressive disease by Response Evaluation Criteria in Solid Tumors version 1.1 for soft tissue disease or by appearance of 2 or more new lesions on bone scan compared to baseline for week 13 or the best response on treatment for week 25 or later assessments, as assessed by ICR or death. In participants with no rPFS event, rPFS was censored on the date of last evaluable radiographic assessment prior to the data analysis cutoff date. In participants with no baseline radiographic assessment, participants with no postbaseline radiographic assessments and participants with all postbaseline radiographic assessments documented as "not evaluable (NE)," rPFS was censored on the date of randomization.
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Timepoint [2]
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From randomization until the data cut-off date of 14 October 2018; maximum duration of treatment was 26.6 months.
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Secondary outcome [1]
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Overall Survival (OS)
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Assessment method [1]
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OS was defined as the time from randomization to death due to any cause. In participants still alive at the date of the analysis cutoff point, OS was censored on the last date the participant was known to be alive. OS was analyzed using Kaplan-Meier estimates.
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Timepoint [1]
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From date of randomization to OS final analysis (28 May 2021); Maximum treatment duration was 58.6 months
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Secondary outcome [2]
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Time to Prostate Specific Antigen (PSA) Progression
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Assessment method [2]
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Time to PSA progression was calculated as the time from the date of randomization to the first observation of PSA progression. A PSA progression was defined as a = 25% increase and an absolute increase of = 2 ng/mL above the nadir, which was confirmed by a second consecutive value at least 3 weeks later. In participants with no PSA progression, time to PSA progression was censored on the date of the last PSA sample taken (or last value prior to 2 or more consecutive missed PSA assessments).
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Timepoint [2]
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From randomization until the data cut-off date of 14 October 2018; maximum duration of treatment was 26.6 months
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Secondary outcome [3]
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Time to Start of New Antineoplastic Therapy
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Assessment method [3]
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In participants with a new antineoplastic therapy initiated for prostate cancer after randomization, time to start of a new antineoplastic therapy was defined as the time interval from randomization to the date of the first dose administration of the first antineoplastic therapy. In participants with no new antineoplastic therapy initiated for prostate cancer after randomization, time to start of new antineoplastic therapy was censored on the last visit date or the date of randomization, whichever occurred last. Time to start of new antineoplastic therapy was analyzed using Kaplan-Meier estimates.
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Timepoint [3]
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From date of randomization to data cut-off date (28 May 2021); Maximum treatment duration was 58.6 months
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Secondary outcome [4]
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PSA Undetectable Rate
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Assessment method [4]
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The PSA undetectable rate was defined as the percentage of participants with undetectable (< 0.2 ng/mL) PSA values at any time during study treatment, of those participants with detectable (= 0.2 ng/mL) PSA values at baseline.
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Timepoint [4]
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Up to the data cut-off date of 14 October 2018; maximum duration of treatment was 26.6 months
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Secondary outcome [5]
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Objective Response Rate (ORR)
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Assessment method [5]
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The ORR was calculated as the percentage of participants who achieved a completed response (CR) or a partial response (PR) (unconfirmed responses) in their soft tissue disease using the Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 assessed by ICR.
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Timepoint [5]
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Up to the data cut-off date of 14 October 2018; maximum duration of treatment was 26.6 months
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Secondary outcome [6]
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Time to Deterioration in Urinary Symptoms
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Assessment method [6]
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In participants with deterioration, the time to deterioration was calculated as the time interval between randomization and the first deterioration in urinary symptoms at any postbaseline visit. A deterioration in urinary symptoms was defined as an increase in the Quality of Life Prostate-specific Questionnaire (QLQ-PR25) modified urinary symptoms. Subscale score by = 50% of the standard deviation observed in the QLQ-PR25 modified urinary symptoms subscale score at baseline. Modified urinary symptoms subscale score consisted of 3-items (Q31 - Q33) from the QLQ-PR25, each scored from 1 (not at all) to 4 (very much). The total modified urinary symptoms subscale score ranges from 0-100, with higher scores represents a higher level of symptomatology/problems. In participants without deterioration in urinary symptoms, the time to deterioration in urinary symptoms was censored on the date the last urinary symptoms QLQ-PR25 score was calculable.
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Timepoint [6]
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From randomization to the data cut-off date of 14 October 2018; maximum duration of treatment was 26.6 months
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Secondary outcome [7]
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Time to First Symptomatic Skeletal Event (SSE)
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Assessment method [7]
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Time to first SSE was calculated as the time from randomization to the occurrence of the first SSE prior to the data analysis cut-off date. An SSE was defined as radiation to bone, surgery to bone, clinically apparent pathological bone fracture, or spinal cord compression. In participants with no SSE by the time of the data cut-off point, time to SSE was censored on the last visit date or the date of randomization, whichever occurred last.
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Timepoint [7]
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From randomization to the data cut-off date of 14 October 2018; maximum duration of treatment was 26.6 months
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Secondary outcome [8]
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Time to Castration Resistance
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Assessment method [8]
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Time to castration resistance was calculated as the time from randomization to the first castration-resistant event. A castration resistance event was defined as any of the following in the presence of castrate levels of testosterone (< 50 ng/dL): radiographic disease progression, PSA progression or SSE, whichever occurred first. In participants with no documented castration resistance event, the time to castration resistance was censored on the latest date from: the date of last radiologic assessment, the last PSA sample taken prior to the start of any new prostate cancer therapy and prior to 2 or more consecutive missed PSA assessments (if applicable), and the last visit date performed.
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Timepoint [8]
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From randomization to the data cut-off date of 14 October 2018; maximum duration of treatment was 26.6 months
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Secondary outcome [9]
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Time to Deterioration of Quality of Life (QoL) in Functional Assessment of Cancer Therapy-Prostate (FACT-P)
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Assessment method [9]
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Time to deterioration of QoL was calculated as the time interval from the date of randomization to the first date a decline from baseline of 10 points or more in the FACT-P total score was recorded. The FACT-P consists of 27 core items that assess participant function in 4 domains and 12 prostate cancer-related items grouped into 5 subscales as follows: physical wellbeing, social/family wellbeing, emotional wellbeing, functional wellbeing and prostate cancer subscale. Each item is rated on a 0 to 4 Likert-type scale. The FACT-P total score is the sum of all 5 subscale scores of the FACT-P questionnaire and ranges from 0 to 156), where high score represent better quality of life. In participants without FACT-P progression, the time to deterioration of QoL was censored on the date of the last FACT-P total score was calculable.
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Timepoint [9]
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From randomization to the data cut-off date of 14 October 2018; maximum duration of treatment was 26.6 months
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Secondary outcome [10]
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Time to Pain Progression Based on Brief Pain Inventory-Short Form (BPI-SF)
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Assessment method [10]
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Time to pain progression was defined as time from randomization to the first pain progression event. Pain progression was defined as an increase of = 30% from baseline in the average BPI-SF pain severity score. BPI-SF contains 9 questions with rating scales from 0 (no pain/no interference) to 10 (worst pain/interferes completely). Total score was calculated as the average of each question. Higher scores represent a higher level of pain or interference. In participants with no pain progression event, time to pain progression was censored on the last visit date where BPI-SF was collected.
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Timepoint [10]
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From randomization to the data cut-off date of 14 October 2018; maximum duration of treatment was 26.6 months
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Eligibility
Key inclusion criteria
- Subject is considered an adult according to local regulation at the time of signing
informed consent.
- Subject is diagnosed with histologically or cytologically confirmed adenocarcinoma of
the prostate without neuroendocrine differentiation, signet cell or small cell
histology.
- Subject has metastatic prostate cancer documented by positive bone scan (for bone
disease) or metastatic lesions on computed tomography (CT) or magnetic resonance
imaging (MRI) scan (for soft tissue). Subjects whose disease spread is limited to
regional pelvic lymph nodes are not eligible.
- Once randomized at day 1, subject must maintain ADT with an LHRH agonist or antagonist
during study treatment or have a history of bilateral orchiectomy (i.e., medical or
surgical castration).
- Subject has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
Inclusion Criteria for Open-Label Extension:
- Subject received randomized double-blind treatment in ARCHES
- Subject has not met any of the discontinuation criteria in the main ARCHES protocol
- Subject is willing to maintain ADT with LHRH agonist or antagonist or has had a
bilateral orchiectomy.
- Subject is able to swallow enzalutamide capsules whole and to comply with study
requirements throughout the study
- Subject and subject's female partner agree to follow contraception and sperm donation
requirements in main protocol
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Minimum age
18
Years
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Maximum age
No limit
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Sex
Males
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Can healthy volunteers participate?
No
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Key exclusion criteria
- Subject has received any prior pharmacotherapy, radiation therapy or surgery for
metastatic prostate cancer (the following exceptions are permitted):
- Up to 3 months of ADT with LHRH agonists or antagonists or orchiectomy with or
without concurrent antiandrogens prior to day 1, with no radiographic evidence of
disease progression or rising PSA levels prior to day 1;
- Subject may have 1 course of palliative radiation or surgical therapy to treat
symptoms resulting from metastatic disease if it was administered at least 4
weeks prior to day 1;
- Up to 6 cycles of docetaxel therapy with final treatment administration completed
within 2 months of day 1 and no evidence of disease progression during or after
the completion of docetaxel therapy;
- Up to 6 months of ADT with LHRH agonists or antagonists or orchiectomy with or
without concurrent antiandrogens prior to day 1 if subject was treated with
docetaxel, with no radiographic evidence of disease progression or rising PSA
levels prior to day 1;
- Prior ADT given for < 39 months in duration and > 9 months before randomization
as neoadjuvant/adjuvant therapy.
- Subject had a major surgery within 4 weeks prior to day 1.
- Subject received treatment with 5-a reductase inhibitors (finasteride, dutasteride)
within 4 weeks prior to day 1.
- Subject received treatment with estrogens, cyprotoerone acetate or androgens within 4
weeks prior to day 1.
- Subject received treatment with systemic glucocorticoids greater than the equivalent
of 10 mg per day of prednisone within 4 weeks prior to day 1, intended for the
treatment of prostate cancer.
- Subject received treatment with herbal medications that have known hormonal
antiprostate cancer activity and/or are known to decrease PSA levels within 4 weeks
prior to day 1.
- Subject received prior aminoglutethimide, ketoconazole, abiraterone acetate or
enzalutamide for the treatment of prostate cancer or participation in a clinical study
of an investigational agent that inhibits the AR or androgen synthesis (e.g., TAK-700,
ARN-509, ODM-201).
- Subject has known or suspected brain metastasis or active leptomeningeal disease.
- Subject has absolute neutrophil count < 1500/µL, platelet count < 100000/µL or
hemoglobin < 10 g/dL (6.2 mmol/L).
- Subject has total bilirubin (TBL) = 1.5 x the upper limit of normal (ULN) (except
subjects with documented Gilbert's disease), or alanine aminotransferase (ALT) or
aspartate aminotransferase (AST) = 2.5 x the ULN .
- Subject has creatinine > 2 mg/dL (177 µmol/L).
- Subject has albumin < 3.0 g/dL (30 g/L).
- Subject has a history of seizure or any condition that may predispose to seizure.
- Subject has history of loss of consciousness or transient ischemic attack within 12
months prior to day 1.
- Subject has clinically significant cardiovascular disease.
- Subject received bisphosphonates or denosumab within 2 weeks prior to day 1 unless
administered at stable dose or to treat diagnosed osteoporosis
Exclusion Criteria for Open-Label Extension:
- Subject has taken commercially available enzalutamide (Xtandi).
- Subject's disease has progressed radiographically during the double-blind period of
the study and treatment with study drug was stopped prior to study-wide unblinding.
(Note: Subjects who progressed radiographically while in the double-blind portion of
the study and continued treatment per protocol are allowed to participate in the open
label extension.)
- After study-wide unblinding, subject has started any new investigational agent or
anti-neoplastic therapy intended to treat prostate cancer
- Subject has any clinically significant disorder or condition including excessive
alcohol or drug abuse, or secondary malignancy, which may interfere with study
participation
- Subject has current or previously treated brain metastasis or active leptomeningeal
disease
- Subject has a history of seizure or any condition that may increase the risk of
seizure
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
The people administering the treatment/s
The people assessing the outcomes
The people analysing the results/data
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 3
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Active, not recruiting
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
9/03/2016
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
31/07/2024
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Actual
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Sample size
Target
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Accrual to date
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Final
1150
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Recruitment in Australia
Recruitment state(s)
NSW,SA,VIC
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Recruitment hospital [1]
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Site AU61016 - Camperdown
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Recruitment hospital [2]
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Site AU61007 - St Leonards
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Site AU61006 - Sydney
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Site AU61009 - Tweed Heads
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Site AU61013 - Waratah
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Recruitment hospital [6]
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Site AU61001 - Woodville South
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Recruitment hospital [7]
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Site AU61004 - Ballarat
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Site AU61015 - Clayton
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Recruitment hospital [9]
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Site AU61017 - Parkville
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Recruitment hospital [10]
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Site AU61008 - St. Albans
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Recruitment postcode(s) [1]
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2050 - Camperdown
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Recruitment postcode(s) [2]
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2065 - St Leonards
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Recruitment postcode(s) [3]
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- Sydney
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Recruitment postcode(s) [4]
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2485 - Tweed Heads
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Recruitment postcode(s) [5]
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2298 - Waratah
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Recruitment postcode(s) [6]
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5011 - Woodville South
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Recruitment postcode(s) [7]
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- Ballarat
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Recruitment postcode(s) [8]
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- Clayton
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Recruitment postcode(s) [9]
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- Parkville
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Recruitment postcode(s) [10]
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- St. Albans
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Recruitment outside Australia
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Alabama
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Alaska
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Arizona
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Colorado
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Illinois
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Tucuman
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Herlev
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Finland
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Finland
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Oulun Laani
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Finland
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Oulu
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Finland
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Pietarsaari
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Finland
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Turku
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Maine-et-Loire
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France
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France
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Bordeaux
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France
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Caen Cedex 05
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France
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La Roche sur Yon
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France
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Le Mans Cedex 2
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France
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Lille Cedex
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France
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Lyon Cedex 3
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France
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Nimes
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France
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Pierre Benite
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France
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Quimper
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France
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Saint Mande
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Germany
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Bonn
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Germany
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Hamburg
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Germany
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HaMerkaz
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Israel
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Israel
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Haifa
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Israel
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Italy
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Italy
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Piemonte
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Italy
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Toscana
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Italy
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Italy
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Veneto
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Italy
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Candiolo
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Japan
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Chiba
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Japan
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Gunma
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Japan
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Kagawa
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Japan
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Kanagawa
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Japan
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Miyagi
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Japan
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Osaka
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Japan
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Tokyo
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Japan
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Yamaguchi
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Japan
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Fukuoka
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Japan
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Kyoto
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Japan
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Nagasaki
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Japan
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Niigata
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Japan
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Yamagata
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Korea, Republic of
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Gyeonggi-do
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Busan
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Incheon
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Seoul
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Netherlands
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Overijssel
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Hamilton
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Poland
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Dolnoslaskie
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Pomerania
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Poland
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Myslowice
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Romania
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Cluj
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Romania
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Timis
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Romania
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Brasov
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Romania
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Bucharest
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Russian Federation
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Russian Federation
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Omsk
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Russian Federation
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Penza
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Russian Federation
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St. Petersburg
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Comunidad Valenciana
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Kaohsiung
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United Kingdom
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Manchester
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Funding & Sponsors
Primary sponsor type
Commercial sector/Industry
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Name
Astellas Pharma Global Development, Inc.
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Address
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Other collaborator category [1]
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0
Commercial sector/Industry
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Name [1]
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Medivation LLC, a wholly owned subsidiary of Pfizer Inc.
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Ethics approval
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Summary
Brief summary
The purpose of this study was to evaluate the efficacy of enzalutamide plus androgen
deprivation therapy (ADT) as measured by radiographic progression-free survival (rPFS) based
on central review. The study also evaluated the safety of enzalutamide plus ADT in mHSPC.
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Trial website
https://clinicaltrials.gov/ct2/show/NCT02677896
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Public notes
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Contacts
Principal investigator
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Medical Director
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Address
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Astellas Pharma Global Development, Inc.
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Summary Results
For IPD and results data, please see
https://clinicaltrials.gov/ct2/show/NCT02677896
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