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    Clinical Trial Results:
    A Phase 3, double-blind, multicenter, placebo-controlled study of PledOx used on top of modified FOLFOX6 (5-FU/FA and Oxaliplatin) to prevent chemotherapy induced peripheral neuropathy (CIPN) in the adjuvant treatment of patients with Stage III or high-risk Stage II colorectal cancer

    Summary
    EudraCT number
    2017-004707-43
    Trial protocol
    BE   FR   DE   GB   ES   IT  
    Global end of trial date
    31 Aug 2020

    Results information
    Results version number
    v1(current)
    This version publication date
    16 Sep 2021
    First version publication date
    16 Sep 2021
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    PP06489
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT04034355
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Egetis Therapeutics AB (formerly PledPharma AB)
    Sponsor organisation address
    Klara Norra Kyrkogata 26, Stockholm, Sweden, SE 111 22
    Public contact
    Kristina Sjöblom Nygren, CMO, Head Clinical Development, Egetis Therapeutics AB , +46 732344698, kristina.sjoblom@egetis.com
    Scientific contact
    Kristina Sjöblom Nygren, CMO, Head Clinical Development, Egetis Therapeutics AB , +46 732344698, kristina.sjoblom@egetis.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
    11 Dec 2020
    Is this the analysis of the primary completion data?
    Yes
    Primary completion date
    31 Aug 2020
    Global end of trial reached?
    Yes
    Global end of trial date
    31 Aug 2020
    Was the trial ended prematurely?
    Yes
    General information about the trial
    Main objective of the trial
    To compare PledOx (5 µmol/kg) vs placebo with respect to the proportion of subjects with moderate or severe chronic CIPN
    Protection of trial subjects
    The study was conducted in accordance with the Declaration of Helsinki, Good Clinical Practice (GCP) guidelines and local law requirements. An independent Data Monitoring Committee monitored accumulating safety, efficacy and other types of data throughout the study.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    07 Jan 2019
    Long term follow-up planned
    No
    Independent data monitoring committee (IDMC) involvement?
    Yes
    Population of trial subjects
    Number of subjects enrolled per country
    Country: Number of subjects enrolled
    Spain: 64
    Country: Number of subjects enrolled
    United Kingdom: 12
    Country: Number of subjects enrolled
    Belgium: 45
    Country: Number of subjects enrolled
    Czechia: 19
    Country: Number of subjects enrolled
    France: 28
    Country: Number of subjects enrolled
    Germany: 9
    Country: Number of subjects enrolled
    Italy: 39
    Country: Number of subjects enrolled
    Japan: 53
    Country: Number of subjects enrolled
    Korea, Republic of: 26
    Country: Number of subjects enrolled
    Taiwan: 6
    Worldwide total number of subjects
    301
    EEA total number of subjects
    204
    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)
    150
    From 65 to 84 years
    150
    85 years and over
    1

    Subject disposition

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    Recruitment
    Recruitment details
    Patients were recruited in the EU and Asia between 2018 and 1 March 2020.

    Pre-assignment
    Screening details
    371 subjects were screened in the 28 days before the start of treatment, 301 were randomised and 297 were treated. The study was prematurely terminated and enrolled patients were followed until the data cut-off date of 31 August 2020; these patients have been assigned as "completed" in the disposition.

    Period 1
    Period 1 title
    Randomised subjects
    Is this the baseline period?
    No
    Allocation method
    Randomised - controlled
    Blinding used
    Double blind
    Roles blinded
    Subject, Investigator, Monitor, Data analyst, Carer, Assessor

    Arms
    Are arms mutually exclusive
    Yes

    Arm title
    PledOx (5 µmol/kg)
    Arm description
    Calmangafodipir [PledOx] (5 µmol/kg) on day 1 every 2 weeks to subjects as an intravenous infusion, combined with mFOLFOX6 chemotherapy.
    Arm type
    Experimental

    Investigational medicinal product name
    Calmangafodipir (5 µmol/kg)
    Investigational medicinal product code
    Other name
    PledOx
    Pharmaceutical forms
    Solution for solution for infusion
    Routes of administration
    Intravenous use
    Dosage and administration details
    PledOx 5 µmol/kg + mFOLFOX6 chemotherapy administered every 2 weeks (±2 days) for 12 cycles

    Arm title
    Placebo
    Arm description
    Placebo on day 1 every 2 weeks to subjects as an intravenous infusion, combined with mFOLFOX6 chemotherapy.
    Arm type
    Placebo

    Investigational medicinal product name
    Sodium Chloride 0.9%
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Solution for solution for infusion
    Routes of administration
    Intravenous use
    Dosage and administration details
    Placebo + mFOLFOX6 chemotherapy administered every 2 weeks (±2 days) for 12 cycles

    Number of subjects in period 1
    PledOx (5 µmol/kg) Placebo
    Started
    151
    150
    Completed
    147
    150
    Not completed
    4
    0
         Consent withdrawn by subject
    3
    -
         Unknown
    1
    -
    Period 2
    Period 2 title
    Subjects treated
    Is this the baseline period?
    Yes [1]
    Allocation method
    Randomised - controlled
    Blinding used
    Double blind
    Roles blinded
    Subject, Investigator, Monitor, Data analyst, Carer, Assessor

    Arms
    Are arms mutually exclusive
    Yes

    Arm title
    PledOx (5 µmol/kg)
    Arm description
    Calmangafodipir [PledOx] (5 µmol/kg) on day 1 every 2 weeks to subjects as an intravenous infusion, combined with mFOLFOX6 chemotherapy.
    Arm type
    Experimental

    Investigational medicinal product name
    Calmangafodipir (5 µmol/kg)
    Investigational medicinal product code
    Other name
    PledOx
    Pharmaceutical forms
    Solution for solution for infusion
    Routes of administration
    Intravenous use
    Dosage and administration details
    PledOx 5 µmol/kg + mFOLFOX6 chemotherapy administered every 2 weeks (±2 days) for 12 cycles

    Arm title
    Placebo
    Arm description
    Placebo on day 1 every 2 weeks to subjects as an intravenous infusion, combined with mFOLFOX6 chemotherapy.
    Arm type
    Placebo

    Investigational medicinal product name
    Sodium Chloride 0.9%
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Solution for solution for infusion
    Routes of administration
    Intravenous use
    Dosage and administration details
    Placebo + mFOLFOX6 chemotherapy administered every 2 weeks (±2 days) for 12 cycles

    Notes
    [1] - Period 1 is not the baseline period. It is expected that period 1 will be the baseline period.
    Justification: There were four subjects randomised who were not treated. The baseline period represents subjects who were treated and the baseline data are presented for the subjects treated.
    Number of subjects in period 2 [2]
    PledOx (5 µmol/kg) Placebo
    Started
    147
    150
    Completed
    117
    115
    Not completed
    30
    35
         Physician decision
    1
    -
         Consent withdrawn by subject
    9
    11
         Study terminated by Sponsor
    10
    17
         Adverse event, non-fatal
    2
    -
         Death
    1
    1
         Unknown
    1
    -
         Lost to follow-up
    1
    -
         Progressive disease
    1
    -
         Site terminated by Sponsor
    4
    5
         Protocol deviation
    -
    1
    Notes
    [2] - The number of subjects reported to be in the baseline period are not the same as the worldwide number enrolled in the trial. It is expected that these numbers will be the same.
    Justification: There were four subjects randomised who were not treated. The baseline period represents subjects who were treated and the baseline data are presented for the subjects treated..

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    PledOx (5 µmol/kg)
    Reporting group description
    Calmangafodipir [PledOx] (5 µmol/kg) on day 1 every 2 weeks to subjects as an intravenous infusion, combined with mFOLFOX6 chemotherapy.

    Reporting group title
    Placebo
    Reporting group description
    Placebo on day 1 every 2 weeks to subjects as an intravenous infusion, combined with mFOLFOX6 chemotherapy.

    Reporting group values
    PledOx (5 µmol/kg) Placebo Total
    Number of subjects
    147 150 297
    Age categorical
    Units: Subjects
        In utero
    0 0 0
        Preterm newborn infants (gestational age < 37 wks)
    0 0 0
        Newborns (0-27 days)
    0 0 0
        Infants and toddlers (28 days-23 months)
    0 0 0
        Children (2-11 years)
    0 0 0
        Adolescents (12-17 years)
    0 0 0
        Adults (18-64 years)
    74 75 149
        From 65-84 years
    72 75 147
        85 years and over
    1 0 1
    Age continuous
    Units: years
        arithmetic mean (standard deviation)
    63.3 ± 10.4 62.4 ± 10.2 -
    Gender categorical
    Units: Subjects
        Female
    69 61 130
        Male
    78 89 167
    Race
    Units: Subjects
        Asian
    43 43 86
        Black or African American
    1 0 1
        Native Hawaiian or other Pacific Islander
    1 0 1
        Other or Unknown
    15 14 29
        White
    87 93 180
    ECOG Performance Status
    Units: Subjects
        Score 0
    118 122 240
        Score 1
    29 28 57

    End points

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    End points reporting groups
    Reporting group title
    PledOx (5 µmol/kg)
    Reporting group description
    Calmangafodipir [PledOx] (5 µmol/kg) on day 1 every 2 weeks to subjects as an intravenous infusion, combined with mFOLFOX6 chemotherapy.

    Reporting group title
    Placebo
    Reporting group description
    Placebo on day 1 every 2 weeks to subjects as an intravenous infusion, combined with mFOLFOX6 chemotherapy.
    Reporting group title
    PledOx (5 µmol/kg)
    Reporting group description
    Calmangafodipir [PledOx] (5 µmol/kg) on day 1 every 2 weeks to subjects as an intravenous infusion, combined with mFOLFOX6 chemotherapy.

    Reporting group title
    Placebo
    Reporting group description
    Placebo on day 1 every 2 weeks to subjects as an intravenous infusion, combined with mFOLFOX6 chemotherapy.

    Primary: Moderate or severe chronic chemotherapy induced peripheral neuropathy (CIPN)

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    End point title
    Moderate or severe chronic chemotherapy induced peripheral neuropathy (CIPN)
    End point description
    Proportion of subjects (with moderate or severe chronic CIPN) scoring 3 or 4 in at least 1 of the first 4 items of the FACT/GOG-NTX-13 (i.e., FACT/GOG-NTX-4), targeting numbness, tingling or discomfort in hands and/or feet, 9 months after the first dose of investigational medicinal product (IMP; i.e. PledOx or placebo administered on Day 1, Cycle 1 of mFOLFOX6 chemotherapy)
    End point type
    Primary
    End point timeframe
    9 months
    End point values
    PledOx (5 µmol/kg) Placebo
    Number of subjects analysed
    120
    119
    Units: participants
    68
    46
    Statistical analysis title
    PledOx (5 µmol/kg) versus Placebo
    Comparison groups
    PledOx (5 µmol/kg) v Placebo
    Number of subjects included in analysis
    239
    Analysis specification
    Pre-specified
    Analysis type
    superiority
    P-value
    = 0.028
    Method
    Mantel-Haenszel
    Parameter type
    Risk ratio (RR)
    Point estimate
    1.521
    Confidence interval
         level
    95%
         sides
    2-sided
         lower limit
    1.0462
         upper limit
    2.2113

    Secondary: Disease free survival

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    End point title
    Disease free survival
    End point description
    Disease-free survival defined as the time from the date of randomisation until the date of objectively determined signs or symptoms of recurrence of colorectal cancer (CRC) or death due to any cause.
    End point type
    Secondary
    End point timeframe
    24 months; analysis performed based on available data at cut-off 31 August 2020
    End point values
    PledOx (5 µmol/kg) Placebo
    Number of subjects analysed
    147
    150
    Units: Number of events
    7
    15
    No statistical analyses for this end point

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    From screening until 30 days after the end of treatment visit which occurred after up to 6 months of treatment
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    23.0
    Reporting groups
    Reporting group title
    PledOx (5 µmol/kg)
    Reporting group description
    -

    Reporting group title
    Placebo
    Reporting group description
    -

    Serious adverse events
    PledOx (5 µmol/kg) Placebo
    Total subjects affected by serious adverse events
         subjects affected / exposed
    20 / 147 (13.61%)
    20 / 150 (13.33%)
         number of deaths (all causes)
    1
    1
         number of deaths resulting from adverse events
    1
    0
    Vascular disorders
    Deep vein thrombosis
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Embolism
         subjects affected / exposed
    1 / 147 (0.68%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Vena cava thrombosis
         subjects affected / exposed
    1 / 147 (0.68%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    General disorders and administration site conditions
    Administration site cellulitis
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Immune system disorders
    Anaphylactic reaction
         subjects affected / exposed
    2 / 147 (1.36%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    1 / 2
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Drug hypersensitivity
         subjects affected / exposed
    1 / 147 (0.68%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Infusion related reaction
         subjects affected / exposed
    3 / 147 (2.04%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    5 / 5
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Respiratory, thoracic and mediastinal disorders
    Pharyngeal inflammation
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Pulmonary embolism
         subjects affected / exposed
    2 / 147 (1.36%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 2
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Product issues
    Device extrusion
         subjects affected / exposed
    1 / 147 (0.68%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Injury, poisoning and procedural complications
    Gastrointestinal stoma complication
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Pubis fracture
         subjects affected / exposed
    1 / 147 (0.68%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Cardiac disorders
    Angina pectoris
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Myocardial infarction
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Nervous system disorders
    Cerebral infarction
         subjects affected / exposed
    1 / 147 (0.68%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Generalised tonic-clonic seizure
         subjects affected / exposed
    1 / 147 (0.68%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    1 / 1
    0 / 0
    Blood and lymphatic system disorders
    Febrile neutropenia
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Ear and labyrinth disorders
    Sudden hearing loss
         subjects affected / exposed
    1 / 147 (0.68%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Gastrointestinal disorders
    Abdominal pain
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Colitis
         subjects affected / exposed
    1 / 147 (0.68%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Crohn's disease
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Ileus
         subjects affected / exposed
    1 / 147 (0.68%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Large intestine perforation
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Small intestinal obstruction
         subjects affected / exposed
    1 / 147 (0.68%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Vomiting
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Hepatobiliary disorders
    Cholecystitis acute
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Renal and urinary disorders
    Acute kidney injury
         subjects affected / exposed
    1 / 147 (0.68%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Renal failure
         subjects affected / exposed
    1 / 147 (0.68%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Infections and infestations
    Clostridium difficile infection
         subjects affected / exposed
    1 / 147 (0.68%)
    0 / 150 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Corona virus infection
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Device related infection
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Gastroenteritis
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Infection
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Influenza
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Osteomyelitis
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Pneumonia
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Urinary tract infection
         subjects affected / exposed
    1 / 147 (0.68%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Metabolism and nutrition disorders
    Decreased appetite
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Diabetic metabolic decompensation
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Hypokalaemia
         subjects affected / exposed
    0 / 147 (0.00%)
    1 / 150 (0.67%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 5%
    Non-serious adverse events
    PledOx (5 µmol/kg) Placebo
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    146 / 147 (99.32%)
    146 / 150 (97.33%)
    Vascular disorders
    Hypertension
         subjects affected / exposed
    11 / 147 (7.48%)
    8 / 150 (5.33%)
         occurrences all number
    16
    10
    General disorders and administration site conditions
    Asthenia
         subjects affected / exposed
    32 / 147 (21.77%)
    36 / 150 (24.00%)
         occurrences all number
    87
    73
    Fatigue
         subjects affected / exposed
    39 / 147 (26.53%)
    36 / 150 (24.00%)
         occurrences all number
    61
    78
    Malaise
         subjects affected / exposed
    8 / 147 (5.44%)
    7 / 150 (4.67%)
         occurrences all number
    23
    9
    Pyrexia
         subjects affected / exposed
    10 / 147 (6.80%)
    13 / 150 (8.67%)
         occurrences all number
    13
    18
    Immune system disorders
    Infusion related reaction
         subjects affected / exposed
    8 / 147 (5.44%)
    2 / 150 (1.33%)
         occurrences all number
    9
    2
    Respiratory, thoracic and mediastinal disorders
    Cough
         subjects affected / exposed
    7 / 147 (4.76%)
    13 / 150 (8.67%)
         occurrences all number
    7
    14
    Epistaxis
         subjects affected / exposed
    12 / 147 (8.16%)
    12 / 150 (8.00%)
         occurrences all number
    14
    12
    Psychiatric disorders
    Insomnia
         subjects affected / exposed
    8 / 147 (5.44%)
    3 / 150 (2.00%)
         occurrences all number
    8
    3
    Investigations
    Alanine aminotransferase increased
         subjects affected / exposed
    11 / 147 (7.48%)
    17 / 150 (11.33%)
         occurrences all number
    18
    26
    Aspartate aminotransferase increased
         subjects affected / exposed
    11 / 147 (7.48%)
    15 / 150 (10.00%)
         occurrences all number
    19
    23
    Nervous system disorders
    Dizziness
         subjects affected / exposed
    11 / 147 (7.48%)
    4 / 150 (2.67%)
         occurrences all number
    14
    4
    Dysaesthesia
         subjects affected / exposed
    7 / 147 (4.76%)
    13 / 150 (8.67%)
         occurrences all number
    15
    22
    Dysgeusia
         subjects affected / exposed
    35 / 147 (23.81%)
    34 / 150 (22.67%)
         occurrences all number
    43
    47
    Headache
         subjects affected / exposed
    12 / 147 (8.16%)
    13 / 150 (8.67%)
         occurrences all number
    14
    18
    Neuropathy peripheral
         subjects affected / exposed
    67 / 147 (45.58%)
    73 / 150 (48.67%)
         occurrences all number
    187
    217
    Paraesthesia
         subjects affected / exposed
    30 / 147 (20.41%)
    33 / 150 (22.00%)
         occurrences all number
    82
    98
    Peripheral sensory neuropathy
         subjects affected / exposed
    49 / 147 (33.33%)
    39 / 150 (26.00%)
         occurrences all number
    132
    129
    Blood and lymphatic system disorders
    Anaemia
         subjects affected / exposed
    17 / 147 (11.56%)
    17 / 150 (11.33%)
         occurrences all number
    24
    20
    Leukopenia
         subjects affected / exposed
    18 / 147 (12.24%)
    19 / 150 (12.67%)
         occurrences all number
    34
    40
    Neutropenia
         subjects affected / exposed
    62 / 147 (42.18%)
    68 / 150 (45.33%)
         occurrences all number
    144
    203
    Thrombocytopenia
         subjects affected / exposed
    46 / 147 (31.29%)
    58 / 150 (38.67%)
         occurrences all number
    69
    134
    Gastrointestinal disorders
    Abdominal pain upper
         subjects affected / exposed
    8 / 147 (5.44%)
    15 / 150 (10.00%)
         occurrences all number
    9
    21
    Abdominal pain
         subjects affected / exposed
    13 / 147 (8.84%)
    14 / 150 (9.33%)
         occurrences all number
    18
    18
    Constipation
         subjects affected / exposed
    30 / 147 (20.41%)
    25 / 150 (16.67%)
         occurrences all number
    38
    39
    Diarrhoea
         subjects affected / exposed
    59 / 147 (40.14%)
    56 / 150 (37.33%)
         occurrences all number
    120
    90
    Dry mouth
         subjects affected / exposed
    4 / 147 (2.72%)
    9 / 150 (6.00%)
         occurrences all number
    4
    9
    Dyspepsia
         subjects affected / exposed
    10 / 147 (6.80%)
    11 / 150 (7.33%)
         occurrences all number
    10
    13
    Nausea
         subjects affected / exposed
    88 / 147 (59.86%)
    69 / 150 (46.00%)
         occurrences all number
    193
    155
    Stomatitis
         subjects affected / exposed
    50 / 147 (34.01%)
    31 / 150 (20.67%)
         occurrences all number
    67
    37
    Vomiting
         subjects affected / exposed
    27 / 147 (18.37%)
    27 / 150 (18.00%)
         occurrences all number
    33
    34
    Skin and subcutaneous tissue disorders
    Alopecia
         subjects affected / exposed
    23 / 147 (15.65%)
    18 / 150 (12.00%)
         occurrences all number
    25
    19
    Palmar-plantar erythrodysaesthesia syndrome
         subjects affected / exposed
    11 / 147 (7.48%)
    15 / 150 (10.00%)
         occurrences all number
    29
    21
    Rash
         subjects affected / exposed
    8 / 147 (5.44%)
    5 / 150 (3.33%)
         occurrences all number
    8
    5
    Musculoskeletal and connective tissue disorders
    Back pain
         subjects affected / exposed
    9 / 147 (6.12%)
    2 / 150 (1.33%)
         occurrences all number
    11
    3
    Muscle spasms
         subjects affected / exposed
    9 / 147 (6.12%)
    6 / 150 (4.00%)
         occurrences all number
    12
    6
    Pain in extremity
         subjects affected / exposed
    8 / 147 (5.44%)
    2 / 150 (1.33%)
         occurrences all number
    10
    2
    Pain in jaw
         subjects affected / exposed
    5 / 147 (3.40%)
    8 / 150 (5.33%)
         occurrences all number
    8
    12
    Infections and infestations
    Nasopharyngitis
         subjects affected / exposed
    8 / 147 (5.44%)
    7 / 150 (4.67%)
         occurrences all number
    8
    7
    Metabolism and nutrition disorders
    Decreased appetite
         subjects affected / exposed
    42 / 147 (28.57%)
    37 / 150 (24.67%)
         occurrences all number
    66
    62
    Hypokalaemia
         subjects affected / exposed
    3 / 147 (2.04%)
    11 / 150 (7.33%)
         occurrences all number
    5
    19

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    20 Jun 2018
    • Updated text to include Asian centers in the study • Included input from Competent Authorities into the protocol text • Updated information on the use of background therapy
    27 Sep 2018
    • Included input from the United States Food and Drug Administration (FDA) • Updated background information
    12 Jul 2019
    • Updated exclusion criteria to add exception for hepatitis B virus (HBV) infection • Clarified study procedures and timing in relation to assessments during Screening, Treatment, and Follow-up Phases • Clarified blinding procedures, Investigational Medicinal Product (IMP) storage requirements, and IMP destruction guide • Specified that adverse events will be collected after signing the informed consent form
    09 Jan 2020
    • Updated exclusion criteria to exclude subjects with any history of seizures • Updated infusion duration for PledOx/Placebo • Updated potential risks according to recently reported serious adverse events (SAEs) • Clarified IDMC review requirement for adverse events/SAEs of seizures, anaphylactoid reactions, and allergic infusion reaction • Clarified stopping criteria for subjects with seizures • Added details for pre-medications before PledOx/placebo infusion • Clarified procedures to be followed in case a death is an outcome of an event • Clarified PledOx-related adverse events • Specified the situations that trigger a brain magnetic resonance imaging (MRI) investigation and a neurological examination • Updated the flow chart of monitoring increased manganese level and/or Parkinson-like symptoms
    15 May 2020
    To update the protocol regarding the decision to prematurely terminate the study as well as to include changes resulting from the COVID 19 pandemic and associated site/country restrictions. • Updated study duration with implementation of an estimated data cut-off date by 30 Sep 2020 • Discontinuation of IMP, screening and randomisation of patients, PK assessments, ECG measurements, and serum β-HCG pregnancy tests • Discontinuation of blood manganese samples with the exception of patients with Parkinson-like symptoms • Continuation of study visits as originally planned but without dosing of IMP • Collection of AEs and concomitant medications up to 30 days after the end of treatment visit and until resolution • Collection of overall survival data until the estimated data cut-off date by 30 Sep 2020 • Added an option for remote data collection during the COVID-19 pandemic for some assessments, according to local requirements • Amended statistical section, making reference to updated statistical analysis plan

    Interruptions (globally)

    Were there any global interruptions to the trial? Yes
    Date
    Interruption
    Restart date
    01 Mar 2020
    On 01 March 2020, the Sponsor decided to place recruitment and dosing of subjects in the POLAR program on hold. The decision followed interactions with the French regulatory authority, ANSM and the US clinical hold of another study (POLAR-M) on 23 January 2020. As of 02 March 2020, no investigational medicinal product (IMP) was administered and no more subjects were enrolled. Enrolled subjects continued to be followed until the data cut-off date of 31 August 2020.
    -

    Limitations and caveats

    Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data.
    None reported
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