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    Clinical Trial Results:
    A phase II clinical trial of radium-223 activity in patients with metastatic castration-resistant prostate cancer (mCRPC) with asymptomatic progression while on abiraterone acetate or enzalutamide besides AR-V7 mutational status

    Summary
    EudraCT number
    2016-001888-36
    Trial protocol
    ES  
    Global end of trial date
    28 Feb 2021

    Results information
    Results version number
    v1(current)
    This version publication date
    12 Mar 2022
    First version publication date
    12 Mar 2022
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    MedOPP098
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT03002220
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Medica Scientia Innovation Research (MEDSIR)
    Sponsor organisation address
    Av Diagonal 211 Torre Glories - 27th floor, Barcelona , Spain, 08018
    Public contact
    Alicia Garcia, Medica Scientia Innovation Research (MEDSIR), 0034 932214135, alicia.garcia@medsir.org
    Scientific contact
    Alicia Garcia, Medica Scientia Innovation Research (MEDSIR), 0034 932214135, alicia.garcia@medsir.org
    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 Oct 2020
    Is this the analysis of the primary completion data?
    No
    Global end of trial reached?
    Yes
    Global end of trial date
    28 Feb 2021
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    To assess the efficacy of radium-223 in asymptomatic patients with mCRPC who have progressed while on abiraterone acetate or enzalutamide treatment.
    Protection of trial subjects
    Standard of Care
    Background therapy
    Radium-223 (molecular formula 223RaCl2) is an alpha-emitting radioisotope that targets areas of bone with hight turnover as metastasis, and it is excreted by the small intestine. When compared with beta-emitters, radium-223 delivers a high quantity of energy per track length with short tissue penetration.
    Evidence for comparator
    -
    Actual start date of recruitment
    16 Nov 2016
    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
    Spain: 52
    Worldwide total number of subjects
    52
    EEA total number of subjects
    52
    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)
    6
    From 65 to 84 years
    29
    85 years and over
    17

    Subject disposition

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    Recruitment
    Recruitment details
    Between Oct 2016 and July 2018, a total of 52 patients with metastatic castration-resistant prostate cancer (mCRPC) with asymptomatic progression were enrolled at 9 sites. All the patients, being either under abiraterone acetate or enzalutamide, were assigned to a single arm, and administered with Radium-223.

    Pre-assignment
    Screening details
    -Aged ≥ 18, signed IC -Histologically confirmed prostate adenocarcinoma -Bone metastases -Serum testosterone ≤ 1.7 nmol/L -Received a minimum of 2W abiraterone acetate or enzalutamide, discontinued 4 weeks before trial -Receiving LHRH -Stable dose bone-targeting therapy -Asymptomatic PC -ECOG 0-1 -Life expectancy ≥ 12M -No other trials

    Period 1
    Period 1 title
    Radium-223 (overall period)
    Is this the baseline period?
    Yes
    Allocation method
    Not applicable
    Blinding used
    Not blinded
    Blinding implementation details
    Unique Arm - Blinding procedure not required

    Arms
    Arm title
    Radium-223
    Arm description
    The patient will be treated with radium-223 at a dose of 55 kBq (after 2015 NIST implementation) per kilogram body weight, given at four- week intervals for six intravenous (IV) injections.
    Arm type
    Experimental

    Investigational medicinal product name
    Radium-223
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Solution for injection
    Routes of administration
    Intravenous use
    Dosage and administration details
    55 kBq per kilogram body weight, given at four- week intervals for six intravenous (IV) injections.

    Number of subjects in period 1
    Radium-223
    Started
    52
    Completed
    52

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Radium-223
    Reporting group description
    -

    Reporting group values
    Radium-223 Total
    Number of subjects
    52 52
    Age categorical
    Units: Subjects
        In utero
    0 0
        Preterm newborn infants (gestational age < 37 wks)
    0 0
        Newborns (0-27 days)
    0 0
        Infants and toddlers (28 days-23 months)
    0 0
        Children (2-11 years)
    0 0
        Adolescents (12-17 years)
    0 0
        Adults (18-64 years)
    6 6
        From 65-84 years
    29 29
        85 years and over
    17 17
    Age continuous
    Units: years
        median (full range (min-max))
    76.1 (69.4 to 82.3) -
    Gender categorical
    Units: Subjects
        Female
    0 0
        Male
    52 52
    Subject analysis sets

    Subject analysis set title
    mITT
    Subject analysis set type
    Modified intention-to-treat
    Subject analysis set description
    All patients with determination of CTC that accomplish selection criteria and receive at least one drug dose.

    Subject analysis set title
    AR-V7[-]
    Subject analysis set type
    Sub-group analysis
    Subject analysis set description
    Patients with no AR-V7 mutation.

    Subject analysis set title
    AR-V7[+]
    Subject analysis set type
    Sub-group analysis
    Subject analysis set description
    Patients with AR-V7 mutation.

    Subject analysis set title
    AR-V7 NA
    Subject analysis set type
    Sub-group analysis
    Subject analysis set description
    Patients with AR-V7 status not available

    Subject analysis sets values
    mITT AR-V7[-] AR-V7[+] AR-V7 NA
    Number of subjects
    52
    35
    5
    12
    Age categorical
    Units: Subjects
        In utero
    0
        Preterm newborn infants (gestational age < 37 wks)
    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)
    6
        From 65-84 years
    29
        85 years and over
    17
    Age continuous
    Units: years
        median (full range (min-max))
    76.1 (69.4 to 82.3)
    Gender categorical
    Units: Subjects
        Female
    0
    0
    0
    0
        Male
    52
    35
    5
    12

    End points

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    End points reporting groups
    Reporting group title
    Radium-223
    Reporting group description
    The patient will be treated with radium-223 at a dose of 55 kBq (after 2015 NIST implementation) per kilogram body weight, given at four- week intervals for six intravenous (IV) injections.

    Subject analysis set title
    mITT
    Subject analysis set type
    Modified intention-to-treat
    Subject analysis set description
    All patients with determination of CTC that accomplish selection criteria and receive at least one drug dose.

    Subject analysis set title
    AR-V7[-]
    Subject analysis set type
    Sub-group analysis
    Subject analysis set description
    Patients with no AR-V7 mutation.

    Subject analysis set title
    AR-V7[+]
    Subject analysis set type
    Sub-group analysis
    Subject analysis set description
    Patients with AR-V7 mutation.

    Subject analysis set title
    AR-V7 NA
    Subject analysis set type
    Sub-group analysis
    Subject analysis set description
    Patients with AR-V7 status not available

    Primary: Radiological rPFS

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    End point title
    Radiological rPFS
    End point description
    The primary endpoint of this study is to assess the efficacy of radium-223 in terms of radiological rPFS. The null hypothesis is that median rPFS is lower or equal than 3 months.
    End point type
    Primary
    End point timeframe
    Once the treatment phase is completed, patients will enter a follow-up period with radiological tumor assessment every three months (±7 working days) until disease progression and safety evaluation during 2 years from the last dose of study treatment.
    End point values
    Radium-223 mITT
    Number of subjects analysed
    52
    52
    Units: Months
    52
    52
    Statistical analysis title
    rPFS Analysis (Primary Endpoint)
    Statistical analysis description
    Study met primary endpoint with a median rPFS of 5.53 months (95% confidence interval (CI), 5.3 to 5.5). We rejected the null hypothesis that median rPFS was lower or equal than 3 months. Based on maximum likelihood exponential test the p-value was <0.001. Based on one-arm one-sided log-rank test the p-value was 0.025. The number of patients with disease progression or death in the study was 37 (71.2%).
    Comparison groups
    Radium-223 v mITT
    Number of subjects included in analysis
    104
    Analysis specification
    Post-hoc
    Analysis type
    other [1]
    P-value
    < 0.05
    Method
    maximum-likelihood exponential test
    Parameter type
    Median difference (final values)
    Point estimate
    5.53
    Confidence interval
         level
    95%
         sides
    2-sided
         lower limit
    5.3
         upper limit
    5.53
    Notes
    [1] - The primary analysis was based on one-arm one-sample log-rank test with an alpha 0.05 level of significance.

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    AEs will be collected up to three months after patient’s disease progression. Safety evaluation after progression will include follow-up of symptomatic skeletal related events until reach 2 years from the last dose of study treatment.
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    4.0
    Reporting groups
    Reporting group title
    Intention to Treat
    Reporting group description
    -

    Serious adverse events
    Intention to Treat
    Total subjects affected by serious adverse events
         subjects affected / exposed
    12 / 52 (23.08%)
         number of deaths (all causes)
    14
         number of deaths resulting from adverse events
    3
    Cardiac disorders
    Cardio-respiratory arrest
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Blood and lymphatic system disorders
    Anaemia
         subjects affected / exposed
    3 / 52 (5.77%)
         occurrences causally related to treatment / all
    1 / 3
         deaths causally related to treatment / all
    0 / 0
    General disorders and administration site conditions
    Pyrexia
         subjects affected / exposed
    2 / 52 (3.85%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Pain
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    General physical health deterioration
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Gastrointestinal disorders
    Vomiting
         subjects affected / exposed
    2 / 52 (3.85%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Nausea
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Respiratory, thoracic and mediastinal disorders
    Respiratory infection
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Renal and urinary disorders
    Haematuria
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Renal failure
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Musculoskeletal and connective tissue disorders
    Spinal cord compression
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Left femur and humerus fracture
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Femur fracture
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Humerus fracture
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Metabolism and nutrition disorders
    Thrombocytopenia
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 0%
    Non-serious adverse events
    Intention to Treat
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    45 / 52 (86.54%)
    Vascular disorders
    Hypertension
         subjects affected / exposed
    2 / 52 (3.85%)
         occurrences all number
    2
    General disorders and administration site conditions
    Asthenia
         subjects affected / exposed
    14 / 52 (26.92%)
         occurrences all number
    21
    Fatigue
         subjects affected / exposed
    4 / 52 (7.69%)
         occurrences all number
    6
    Pyrexia
         subjects affected / exposed
    3 / 52 (5.77%)
         occurrences all number
    4
    Pain
         subjects affected / exposed
    4 / 52 (7.69%)
         occurrences all number
    5
    Oedema peripheral
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Malaise
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    General physical health deterioration
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Reproductive system and breast disorders
    Cough
         subjects affected / exposed
    2 / 52 (3.85%)
         occurrences all number
    2
    Respiratory, thoracic and mediastinal disorders
    Chronic obstructive pulmonary disease
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Dyspnoea
         subjects affected / exposed
    2 / 52 (3.85%)
         occurrences all number
    2
    Epistaxis
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Respiratory tract infection
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Psychiatric disorders
    Disorientation
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Insomnia
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Depressed mood
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Investigations
    Blood alkaline phosphatase increased
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Cardiac disorders
    Aortic valve incompetence
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Cardiac failure congestive
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Nervous system disorders
    Burning sensation
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    2
    Dizziness
         subjects affected / exposed
    2 / 52 (3.85%)
         occurrences all number
    2
    Sciatica
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Paraesthesia
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Blood and lymphatic system disorders
    Anaemia
         subjects affected / exposed
    9 / 52 (17.31%)
         occurrences all number
    29
    Leukopenia
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Neutropenia
         subjects affected / exposed
    2 / 52 (3.85%)
         occurrences all number
    3
    Thrombocytopenia
         subjects affected / exposed
    2 / 52 (3.85%)
         occurrences all number
    5
    Ear and labyrinth disorders
    Vertigo
         subjects affected / exposed
    2 / 52 (3.85%)
         occurrences all number
    2
    Eye disorders
    Vision blurred
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Diplopia
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Gastrointestinal disorders
    Constipation
         subjects affected / exposed
    2 / 52 (3.85%)
         occurrences all number
    2
    Diarrhoea
         subjects affected / exposed
    7 / 52 (13.46%)
         occurrences all number
    11
    Vomiting
         subjects affected / exposed
    4 / 52 (7.69%)
         occurrences all number
    4
    Epigastric discomfort
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    2
    Nausea
         subjects affected / exposed
    6 / 52 (11.54%)
         occurrences all number
    9
    Skin and subcutaneous tissue disorders
    Decubitus ulcer
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Rash
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Renal and urinary disorders
    Urosepsis
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Haematuria
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Nephrolithiasis
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Urinary incontinence
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Musculoskeletal and connective tissue disorders
    Arthralgia
         subjects affected / exposed
    11 / 52 (21.15%)
         occurrences all number
    12
    Back pain
         subjects affected / exposed
    6 / 52 (11.54%)
         occurrences all number
    7
    Bone pain
         subjects affected / exposed
    6 / 52 (11.54%)
         occurrences all number
    6
    Costal pain
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Limb discomfort
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    2
    Osteoporotic fracture
         subjects affected / exposed
    3 / 52 (5.77%)
         occurrences all number
    3
    Pain in extremity
         subjects affected / exposed
    4 / 52 (7.69%)
         occurrences all number
    4
    Osteoporosis
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Musculoskeletal pain
         subjects affected / exposed
    5 / 52 (9.62%)
         occurrences all number
    6
    Musculoskeletal chest pain
         subjects affected / exposed
    2 / 52 (3.85%)
         occurrences all number
    3
    Groin pain
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Infections and infestations
    Oral candidiasis
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Wound infection
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Haemophilus infection
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Streptococcal infection
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Metabolism and nutrition disorders
    Decreased appetite
         subjects affected / exposed
    7 / 52 (13.46%)
         occurrences all number
    7
    Hyperglycaemia
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Hyperkalaemia
         subjects affected / exposed
    1 / 52 (1.92%)
         occurrences all number
    1
    Hyperphosphataemia
         subjects affected / exposed
    1 / 52 (1.92%)
         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
    06 Apr 2016
    Change of the location of the laboratory responsible for processing blood samples coming from patients
    26 Nov 2018
    Two hospitals decided to leave the study (Hospital Gregorio Marañón in Madrid, with Dr. Jose Ángel Arranz as PI and Clinical Hospital San Carlos, with Dr. Javier Puenteas PI) replaced by Hospital Universitario Son Espases, with Dr. Aránzazu Gonzalez del Alba as IP.

    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
    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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