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    Clinical Trial Results:
    A Phase 2, 24 Week, Open Label, Multi-Center Study to Assess the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of SSP-004184 (SPD602) in the Treatment of Chronic Iron Overload Requiring Chelation Therapy

    Summary
    EudraCT number
    2011-005675-16
    Trial protocol
    IT  
    Global end of trial date
    18 Apr 2014

    Results information
    Results version number
    v1(current)
    This version publication date
    12 Oct 2019
    First version publication date
    25 Jul 2015
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    SPD602-203
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT01604941
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Shire Development LLC
    Sponsor organisation address
    300 Shire Way, Lexington, Massachusetts, United States, 02421
    Public contact
    Study Physician, Shire Development LLC, +1 866 842 5335,
    Scientific contact
    Study Physician, Shire Development LLC, +1 866 842 5335,
    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
    18 Apr 2014
    Is this the analysis of the primary completion data?
    No
    Global end of trial reached?
    Yes
    Global end of trial date
    18 Apr 2014
    Was the trial ended prematurely?
    Yes
    General information about the trial
    Main objective of the trial
    To evaluate the steady-state pharmacokinetic parameters in subjects taking an SSP-004184AQ twice daily (BID) dose in the iron-overloaded population; to evaluate the changes in LIC after 12 and 24 weeks in subjects taking an SSP-004184AQ BID dose; and to assess the safety and tolerability of SSP-004184AQ when administered daily for 24 weeks in iron-overloaded subjects.
    Protection of trial subjects
    This study was conducted in accordance with the International Conference on Harmonisation (ICH) harmonised tripartite guideline E6(R1): Good Clinical Practice, the principles of the Declaration of Helsinki, as well as other applicable local ethical and legal requirements.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    14 Sep 2012
    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
    Italy: 13
    Country: Number of subjects enrolled
    Canada: 4
    Country: Number of subjects enrolled
    Lebanon: 11
    Country: Number of subjects enrolled
    United States: 4
    Worldwide total number of subjects
    32
    EEA total number of subjects
    13
    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)
    32
    From 65 to 84 years
    0
    85 years and over
    0

    Subject disposition

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    Recruitment
    Recruitment details
    The study started as a double-arm study with once daily (QD) dosing but was amended first to a double-arm study with twice daily (BID) dosing and then to a single-arm study after removing the higher dose. Some participants were enrolled directly to BID dosing, some to QD dosing and then re-enrolled to BID dosing, some completed with QD dosing.

    Pre-assignment
    Screening details
    Subjects were screened for enrollment over a period of 45 days

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

    Arms
    Are arms mutually exclusive
    Yes

    Arm title
    SPD602 50mg/kg/day Twice Daily Dosing (BID)
    Arm description
    Subjects were randomly assigned to 50 mg/kg/day oral BID dosing and continued BID dosing until the end of study (24 weeks) or early discontinuation.
    Arm type
    Experimental

    Investigational medicinal product name
    SPD602
    Investigational medicinal product code
    Other name
    SSP-004184, FBS0701, deferitazole
    Pharmaceutical forms
    Capsule, hard
    Routes of administration
    Oral use
    Dosage and administration details
    Subjects were administered a combination of 50, 100, 200, 250, or 375 mg capsules for a total dose of 50 mg/kg/day twice daily. Initial dosing was based on the subject’s weight at Day 1 or as close to Day 1 as possible (e.g., screening, baseline, a blood transfusion clinic visit prior to Day 1). If during the course of the study the subject’s weight differed from the weight used for Day 1 by more than 10%, the amount of SSP-004184AQ dispensed was to be corrected.

    Arm title
    SPD602 75mg/kg/day Twice Daily Dosing (BID)
    Arm description
    Subjects were randomly assigned to 75 mg/kg/day oral BID dosing and continued BID dosing until the end of study (24 weeks) or early discontinuation.
    Arm type
    Experimental

    Investigational medicinal product name
    SPD602
    Investigational medicinal product code
    Other name
    SSP-004184, FBS0701, deferitazole
    Pharmaceutical forms
    Capsule, hard
    Routes of administration
    Oral use
    Dosage and administration details
    Subjects were administered a combination of 50, 100, 200, 250, or 375 mg capsules for a total dose of 75 mg/kg/day twice daily. Initial dosing was based on the subject’s weight at Day 1 or as close to Day 1 as possible (e.g., screening, baseline, a blood transfusion clinic visit prior to Day 1). If during the course of the study the subject’s weight differed from the weight used for Day 1 by more than 10%, the amount of SSP-004184AQ dispensed was to be corrected.

    Arm title
    SPD602 50mg/kg/day Once (QD) Then Twice Daily Dosing (BID)
    Arm description
    Subjects were randomly assigned to QD dosing then re-enrolled to 50 mg/kg/day oral BID dosing and continued BID dosing until the end of study (24 weeks) or early discontinuation.
    Arm type
    Experimental

    Investigational medicinal product name
    SPD602
    Investigational medicinal product code
    Other name
    SSP-004184, FBS0701, deferitazole
    Pharmaceutical forms
    Capsule, hard
    Routes of administration
    Oral use
    Dosage and administration details
    Subjects were administered a combination of 50, 100, 200, 250, or 375 mg capsules for a total dose of 50 mg/kg/day once then twice daily. Initial dosing was based on the subject’s weight at Day 1 or as close to Day 1 as possible (e.g., screening, baseline, a blood transfusion clinic visit prior to Day 1). If during the course of the study the subject’s weight differed from the weight used for Day 1 by more than 10%, the amount of SSP-004184AQ dispensed was to be corrected.

    Arm title
    SPD602 75mg/kg/day Once (QD) Then Twice Daily Dosing (BID)
    Arm description
    Subjects were randomly assigned to QD dosing then re-enrolled to 75 mg/kg/day oral BID dosing and continued BID dosing until the end of study (24 weeks) or early discontinuation.
    Arm type
    Experimental

    Investigational medicinal product name
    SPD602
    Investigational medicinal product code
    Other name
    SSP-004184, FBS0701, deferitazole
    Pharmaceutical forms
    Capsule, hard
    Routes of administration
    Oral use
    Dosage and administration details
    Subjects were administered a combination of 50, 100, 200, 250, or 375 mg capsules for a total dose of 75 mg/kg/day once then twice daily. Initial dosing was based on the subject’s weight at Day 1 or as close to Day 1 as possible (e.g., screening, baseline, a blood transfusion clinic visit prior to Day 1). If during the course of the study the subject’s weight differed from the weight used for Day 1 by more than 10%, the amount of SSP-004184AQ dispensed was to be corrected.

    Arm title
    SPD602 50mg/kg/day Once Daily Dosing (QD)
    Arm description
    Subjects were randomly assigned to 50 mg/kg/day oral QD dosing and continued QD dosing until the end of study (24 weeks) or early discontinuation.
    Arm type
    Experimental

    Investigational medicinal product name
    SPD602
    Investigational medicinal product code
    Other name
    SSP-004184, FBS0701, deferitazole
    Pharmaceutical forms
    Capsule, hard
    Routes of administration
    Oral use
    Dosage and administration details
    Subjects were administered a combination of 50, 100, 200, 250, or 375 mg capsules for a total dose of 50 mg/kg/day once daily. Initial dosing was based on the subject’s weight at Day 1 or as close to Day 1 as possible (e.g., screening, baseline, a blood transfusion clinic visit prior to Day 1). If during the course of the study the subject’s weight differed from the weight used for Day 1 by more than 10%, the amount of SSP-004184AQ dispensed was to be corrected.

    Arm title
    SPD602 75mg/kg/day Once Daily Dosing (QD)
    Arm description
    Subjects were randomly assigned to 75 mg/kg/day oral QD dosing and continued QD dosing until the end of study (24 weeks) or early discontinuation.
    Arm type
    Experimental

    Investigational medicinal product name
    SPD602
    Investigational medicinal product code
    Other name
    SSP-004184, FBS0701, deferitazole
    Pharmaceutical forms
    Capsule, hard
    Routes of administration
    Oral use
    Dosage and administration details
    Subjects were administered a combination of 50, 100, 200, 250, or 375 mg capsules for a total dose of 75 mg/kg/day once daily. Initial dosing was based on the subject’s weight at Day 1 or as close to Day 1 as possible (e.g., screening, baseline, a blood transfusion clinic visit prior to Day 1). If during the course of the study the subject’s weight differed from the weight used for Day 1 by more than 10%, the amount of SSP-004184AQ dispensed was to be corrected.

    Number of subjects in period 1
    SPD602 50mg/kg/day Twice Daily Dosing (BID) SPD602 75mg/kg/day Twice Daily Dosing (BID) SPD602 50mg/kg/day Once (QD) Then Twice Daily Dosing (BID) SPD602 75mg/kg/day Once (QD) Then Twice Daily Dosing (BID) SPD602 50mg/kg/day Once Daily Dosing (QD) SPD602 75mg/kg/day Once Daily Dosing (QD)
    Started
    11
    4
    3
    3
    4
    7
    Completed
    0
    0
    0
    0
    3
    0
    Not completed
    11
    4
    3
    3
    1
    7
         Participant decision
    -
    -
    -
    -
    -
    2
         Early study termination
    9
    2
    3
    3
    -
    -
         Adverse event
    1
    2
    -
    -
    1
    5
         Non-compliance
    1
    -
    -
    -
    -
    -

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Overall Study
    Reporting group description
    All randomized subjects

    Reporting group values
    Overall Study Total
    Number of subjects
    32 32
    Age categorical
    Units: Subjects
    Age continuous
    Units: years
        arithmetic mean (standard deviation)
    29.2 ± 7.99 -
    Gender categorical
    Units: Subjects
        Female
    20 20
        Male
    12 12

    End points

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    End points reporting groups
    Reporting group title
    SPD602 50mg/kg/day Twice Daily Dosing (BID)
    Reporting group description
    Subjects were randomly assigned to 50 mg/kg/day oral BID dosing and continued BID dosing until the end of study (24 weeks) or early discontinuation.

    Reporting group title
    SPD602 75mg/kg/day Twice Daily Dosing (BID)
    Reporting group description
    Subjects were randomly assigned to 75 mg/kg/day oral BID dosing and continued BID dosing until the end of study (24 weeks) or early discontinuation.

    Reporting group title
    SPD602 50mg/kg/day Once (QD) Then Twice Daily Dosing (BID)
    Reporting group description
    Subjects were randomly assigned to QD dosing then re-enrolled to 50 mg/kg/day oral BID dosing and continued BID dosing until the end of study (24 weeks) or early discontinuation.

    Reporting group title
    SPD602 75mg/kg/day Once (QD) Then Twice Daily Dosing (BID)
    Reporting group description
    Subjects were randomly assigned to QD dosing then re-enrolled to 75 mg/kg/day oral BID dosing and continued BID dosing until the end of study (24 weeks) or early discontinuation.

    Reporting group title
    SPD602 50mg/kg/day Once Daily Dosing (QD)
    Reporting group description
    Subjects were randomly assigned to 50 mg/kg/day oral QD dosing and continued QD dosing until the end of study (24 weeks) or early discontinuation.

    Reporting group title
    SPD602 75mg/kg/day Once Daily Dosing (QD)
    Reporting group description
    Subjects were randomly assigned to 75 mg/kg/day oral QD dosing and continued QD dosing until the end of study (24 weeks) or early discontinuation.

    Subject analysis set title
    SPD602 50mg/kg/Day
    Subject analysis set type
    Full analysis
    Subject analysis set description
    Participants received SPD602 50mg/kg/day oral dosing either twice daily (BID) or once daily (QD), then BID.

    Subject analysis set title
    All participants with BID dosing
    Subject analysis set type
    Full analysis
    Subject analysis set description
    Of the 21 subjects randomly assigned to BID dosing (including re-enrolled participants), 10 were excluded from the Full Analysis Set. Data for this arm were analyzed to verify that the protocol, as finally amended, was not impacted by using only the lower dose.

    Primary: Change From Baseline in Liver Iron Concentration (LIC) as Assessed by FerriScan R2 Magnetic Resonance Imaging (MRI)

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    End point title
    Change From Baseline in Liver Iron Concentration (LIC) as Assessed by FerriScan R2 Magnetic Resonance Imaging (MRI) [1]
    End point description
    The efficacy of SPD602 was assessed by determining LIC. Abdominal MRI data were collected by using FerriScan R2 standard procedures and used to determine LIC. A negative change from baseline indicates that LIC decreased. Early Termination was within the protocol defined visit date +/- 14 days window and was mapped to next scheduled MRI visit for 3 subjects. This endpoint analyzed the Full Analysis Set (FAS), defined as all subjects in the Safety Set who had at least 1 post-baseline primary efficacy assessment. The Safety Set was defined as all subjects who had taken at least 1 BID dose of investigational product.
    End point type
    Primary
    End point timeframe
    Baseline, 12 and 24 weeks
    Notes
    [1] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point.
    Justification: Differences for LIC were compared between baseline and post-baseline visits. No between-group comparisons were made as part of this study.
    End point values
    SPD602 50mg/kg/Day All participants with BID dosing
    Number of subjects analysed
    5
    11
    Units: mg Fe/g*dw
    arithmetic mean (standard deviation)
        Week 12, n=5,10
    -3.4 ± 6.4
    -3.8 ± 5
        Week 24, n=1,2
    -5.3 ± 0
    -2.1 ± 4.5
    No statistical analyses for this end point

    Primary: Change From Baseline in LIC Adjusted by Transfusional Iron Intake And Assessed by FerriScan R2 MRI

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    End point title
    Change From Baseline in LIC Adjusted by Transfusional Iron Intake And Assessed by FerriScan R2 MRI [2]
    End point description
    The efficacy of SPD602 was assessed by determining LIC and adjusting for transfusional iron intake. Abdominal MRI data were collected by using FerriScan R2 standard procedures and used to determine LIC. A negative change from baseline indicates that LIC decreased. For participants who had a blood transfusion on the MRI exam date, the blood transfusion done immediately prior to the MRI exam date was included in the calculation of daily transfusion intake. Early Termination was within the protocol defined visit date +/- 14 days window and was mapped to next scheduled MRI visit for 3 subjects. This endpoint analyzed the FAS, defined as all subjects in the Safety Set who had at least 1 post-baseline primary efficacy assessment. The Safety Set was defined as all subjects who had taken at least 1 BID dose of investigational product.
    End point type
    Primary
    End point timeframe
    Baseline, 12 and 24 weeks
    Notes
    [2] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point.
    Justification: Differences for LIC were compared between baseline and post-baseline visits. No between-group comparisons were made as part of this study.
    End point values
    SPD602 50mg/kg/Day All participants with BID dosing
    Number of subjects analysed
    5
    11
    Units: mg Fe/g*dw
    arithmetic mean (standard deviation)
        Week 12, n=5,10
    -6.3 ± 8.4
    -6.6 ± 6.7
        Week 24, n=1,2
    -12.8 ± 0
    -9.3 ± 5
    No statistical analyses for this end point

    Secondary: Change From Baseline in LIC as Assessed by R2* MRI

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    End point title
    Change From Baseline in LIC as Assessed by R2* MRI
    End point description
    The efficacy of SPD602 was assessed by determining LIC. Abdominal MRI data were collected by using R2* standard procedures (liver and pancreas) and used to determine LIC. A negative change from baseline indicates that LIC decreased. Early Termination was within the protocol defined visit date +/- 14 days window and was mapped to next scheduled MRI visit for 3 subjects. This endpoint analyzed the FAS, defined as all subjects in the Safety Set who had at least 1 post-baseline primary efficacy assessment. The Safety Set was defined as all subjects who had taken at least 1 BID dose of investigational product.
    End point type
    Secondary
    End point timeframe
    Baseline, 12 and 24 weeks
    End point values
    SPD602 50mg/kg/Day All participants with BID dosing
    Number of subjects analysed
    5
    11
    Units: mg Fe/g*dw
    arithmetic mean (standard deviation)
        Week 12, n=5,9
    -3.2 ± 2.3
    -3.2 ± 2.1
        Week 24, n=1,2
    -2.4 ± 0
    -3.3 ± 1.3
    No statistical analyses for this end point

    Secondary: Change From Baseline in LIC Adjusted by Transfusional Iron Intake And Assessed by R2* MRI

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    End point title
    Change From Baseline in LIC Adjusted by Transfusional Iron Intake And Assessed by R2* MRI
    End point description
    The efficacy of SPD602 was assessed by determining LIC and adjusting for transfusional iron intake. Abdominal MRI data were collected by using R2* standard procedures (liver and pancreas) and used to determine LIC. A negative change from baseline indicates that LIC decreased. For participants who had a blood transfusion on the MRI exam date, the blood transfusion done immediately prior to the MRI exam date was included in the calculation of daily transfusion intake. Early Termination was within the protocol defined visit date +/- 14 days window and was mapped to next scheduled MRI visit for 3 subjects. This endpoint analyzed the FAS, defined as all subjects in the Safety Set who had at least 1 post-baseline primary efficacy assessment. The Safety Set was defined as all subjects who had taken at least 1 BID dose of investigational product.
    End point type
    Secondary
    End point timeframe
    Baseline, 12 and 24 weeks
    End point values
    SPD602 50mg/kg/Day All participants with BID dosing
    Number of subjects analysed
    5
    11
    Units: mg Fe/g*dw
    arithmetic mean (standard deviation)
        Week 12, n=5,9
    -6 ± 4.5
    -6.2 ± 3.2
        Week 24, n=1,2
    -9.9 ± 0
    -10.5 ± 0.8
    No statistical analyses for this end point

    Secondary: Change From Baseline in Cardiac T2* Relaxation Rate, an MRI Parameter Used to Estimate Cardiac Iron Load

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    End point title
    Change From Baseline in Cardiac T2* Relaxation Rate, an MRI Parameter Used to Estimate Cardiac Iron Load
    End point description
    The efficacy of SPD602 was assessed by estimating cardiac iron load. T2* data from cardiac MRI were collected by using standard procedures and used as an estimate of cardiac iron load. T2* is an MR relaxation parameter that is reported in milliseconds. Iron within a tissue decreases homogeneity of the magnetic field and shortens the T2* relaxation rate (Anderson, 2001). Low cardiac T2* values are associated with increased risk of heart failure (Kirk, 2009). A negative change from baseline in the T2* relaxation rate indicates that iron load increased. Early Termination was within the protocol defined visit date +/­ 14 days window and was mapped to next scheduled MRI visit for 3 subjects. This endpoint analyzed the FAS, defined as all subjects in the Safety Set who had at least 1 post-baseline primary efficacy assessment. The Safety Set was defined as all subjects who had taken at least 1 BID dose of investigational product.
    End point type
    Secondary
    End point timeframe
    Baseline, 12 and 24 weeks
    End point values
    SPD602 50mg/kg/Day All participants with BID dosing
    Number of subjects analysed
    5
    11
    Units: milliseconds
    arithmetic mean (standard deviation)
        Week 12, n=5,7
    -0.64 ± 3.08
    -0.24 ± 3.91
        Week 24, n=1,2
    -4.1 ± 0
    -2.6 ± 2.121
    No statistical analyses for this end point

    Secondary: Change From Baseline in Serum Ferritin

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    End point title
    Change From Baseline in Serum Ferritin
    End point description
    Serum ferritin levels were determined from serum biochemistry analyses. A negative change from baseline indicates that serum ferritin decreased. This endpoint analyzed the FAS, defined as all subjects in the Safety Set who had at least 1 post-baseline primary efficacy assessment. The Safety Set was defined as all subjects who had taken at least 1 BID dose of investigational product.
    End point type
    Secondary
    End point timeframe
    Baseline, 8 and 16 weeks
    End point values
    SPD602 50mg/kg/Day All participants with BID dosing
    Number of subjects analysed
    5
    11
    Units: ng/mL
    arithmetic mean (standard deviation)
        Week 8, n=5,11
    -762.63 ± 2100.683
    -568.08 ± 1426.687
        Week 16, n=1,4
    586.47 ± 0
    137.63 ± 972.97
    No statistical analyses for this end point

    Secondary: Number of Participants Classified as a Responder by FerriScan R2 MRI Analysis of LIC

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    End point title
    Number of Participants Classified as a Responder by FerriScan R2 MRI Analysis of LIC
    End point description
    A responder was defined as a participant whose observed liver iron concentration (LIC) at the measured time point was less than the baseline value. LIC was assessed by abdominal MRI with the FerriScan R2 according to standard procedures. Early Termination was within the protocol defined visit date +/- 14 days window and was mapped to next scheduled MRI visit for 3 participants. This endpoint analyzed the FAS, defined as all subjects in the Safety Set who had at least 1 post-baseline primary efficacy assessment. The Safety Set was defined as all subjects who had taken at least 1 BID dose of investigational product.
    End point type
    Secondary
    End point timeframe
    12 and 24 weeks
    End point values
    SPD602 50mg/kg/Day All participants with BID dosing
    Number of subjects analysed
    5
    11
    Units: subjects
        Week 12, n=5,10
    4
    8
        Week 24, n=1,2
    1
    1
    No statistical analyses for this end point

    Secondary: Number of Participants Classified as a Responder by FerriScan R2 MRI Analysis of LIC Adjusted For Transfusional Iron Intake

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    End point title
    Number of Participants Classified as a Responder by FerriScan R2 MRI Analysis of LIC Adjusted For Transfusional Iron Intake
    End point description
    A responder was defined as a participant whose observed liver iron concentration (LIC) at the measured time point was less than the baseline value. LIC was assessed by abdominal MRI with the FerriScan R2 according to standard procedures, and the results were adjusted for transfusional iron intake. Early Termination was within the protocol defined visit date +/- 14 days window and was mapped to next scheduled MRI visit for 3 participants. For participants who had a blood transfusion on the MRI exam date, the blood transfusion done immediately prior to the MRI exam date was included in the calculation of daily transfusion intake. This endpoint analyzed the FAS, defined as all subjects in the Safety Set who had at least 1 post-baseline primary efficacy assessment. The Safety Set was defined as all subjects who had taken at least 1 BID dose of investigational product.
    End point type
    Secondary
    End point timeframe
    12 and 24 weeks
    End point values
    SPD602 50mg/kg/Day All participants with BID dosing
    Number of subjects analysed
    5
    11
    Units: subjects
        Week 12, n=5,10
    4
    8
        Week 24, n=1,2
    1
    1
    No statistical analyses for this end point

    Secondary: Number of Participants Classified as a Responder by R2* MRI Analysis of LIC

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    End point title
    Number of Participants Classified as a Responder by R2* MRI Analysis of LIC
    End point description
    A responder was defined as a participant whose observed liver iron concentration (LIC) at the measured time point was less than the baseline value. LIC was assessed by abdominal MRI with the R2* according to standard procedures (liver and pancreas). Early Termination was within the protocol defined visit date +/- 14 days window and was mapped to next scheduled MRI visit for 3 participants. This endpoint analyzed the FAS, defined as all subjects in the Safety Set who had at least 1 post-baseline primary efficacy assessment. The Safety Set was defined as all subjects who had taken at least 1 BID dose of investigational product.
    End point type
    Secondary
    End point timeframe
    12 and 24 weeks
    End point values
    SPD602 50mg/kg/Day All participants with BID dosing
    Number of subjects analysed
    5
    11
    Units: subjects
        Week 12, n=5,9
    5
    9
        Week 24, n=1,2
    1
    2
    No statistical analyses for this end point

    Secondary: Number of Participants Classified as a Responder by R2* MRI Analysis of LIC Adjusted For Transfusional Iron Intake

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    End point title
    Number of Participants Classified as a Responder by R2* MRI Analysis of LIC Adjusted For Transfusional Iron Intake
    End point description
    A responder was defined as a participant whose observed liver iron concentration (LIC) at the measured time point was less than the baseline value. LIC was assessed by abdominal MRI with the R2* according to standard procedures (liver and pancreas), and the results were adjusted for transfusional iron intake. Early Termination was within the protocol defined visit date +/- 14 days window and was mapped to next scheduled MRI visit for 3 participants. For participants who had a blood transfusion on the MRI exam date, the blood transfusion done immediately prior to the MRI exam date was included in the calculation of daily transfusion intake. This endpoint analyzed the FAS, defined as all subjects in the Safety Set who had at least 1 post-baseline primary efficacy assessment. The Safety Set was defined as all subjects who had taken at least 1 BID dose of investigational product.
    End point type
    Secondary
    End point timeframe
    12 and 24 weeks
    End point values
    SPD602 50mg/kg/Day All participants with BID dosing
    Number of subjects analysed
    5
    11
    Units: subjects
        Week 12, n=5,9
    5
    9
        Week 24, n=1,2
    1
    2
    No statistical analyses for this end point

    Secondary: Number of Participants Classified as a Responder by Serum Ferritin

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    End point title
    Number of Participants Classified as a Responder by Serum Ferritin
    End point description
    A responder was defined as a participant whose observed serum ferritin level at the measured time point was less than the baseline value. Serum ferritin levels were determined from serum biochemistry analyses. This endpoint analyzed the FAS, defined as all subjects in the Safety Set who had at least 1 post-baseline primary efficacy assessment. The Safety Set was defined as all subjects who had taken at least 1 BID dose of investigational product.
    End point type
    Secondary
    End point timeframe
    8 and 16 weeks
    End point values
    SPD602 50mg/kg/Day All participants with BID dosing
    Number of subjects analysed
    5
    11
    Units: subjects
        Week 8, n=5,11
    3
    8
        Week 16, n=1,4
    0
    1
    No statistical analyses for this end point

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    25 weeks
    Adverse event reporting additional description
    All safety analyses, including analyses of AEs, were based on the Safety Set, which included subjects in the 50mg/kg/day BID and 75mg/kg/day BID dosing groups who had taken at least 1 BID dose of investigational product. Subjects in the QD only dosing groups were not included in the Safety Set.
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    12.1
    Reporting groups
    Reporting group title
    SPD602 50mg/kg/day
    Reporting group description
    Participants received SPD602 50mg/kg/day oral dosing BID either as originally randomized or as a re-enrolled subject.

    Reporting group title
    SPD602 75mg/kg/Day
    Reporting group description
    Participants received SPD602 75mg/kg/day oral dosing BID either as originally randomized or as a re-enrolled subject.

    Serious adverse events
    SPD602 50mg/kg/day SPD602 75mg/kg/Day
    Total subjects affected by serious adverse events
         subjects affected / exposed
    2 / 12 (16.67%)
    2 / 7 (28.57%)
         number of deaths (all causes)
    0
    0
         number of deaths resulting from adverse events
    0
    0
    Congenital, familial and genetic disorders
    Sickle cell anaemia with crisis
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Nervous system disorders
    Neuropathy peripheral
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (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
    Chest pain
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Pain
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Hepatobiliary disorders
    Cholelithiasis
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Musculoskeletal and connective tissue disorders
    Flank pain
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 5%
    Non-serious adverse events
    SPD602 50mg/kg/day SPD602 75mg/kg/Day
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    9 / 12 (75.00%)
    7 / 7 (100.00%)
    Vascular disorders
    Hypotension
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Pallor
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    General disorders and administration site conditions
    Asthenia
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Axillary pain
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Fatigue
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Influenza like illness
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Oedema peripheral
         subjects affected / exposed
    1 / 12 (8.33%)
    1 / 7 (14.29%)
         occurrences all number
    1
    1
    Pyrexia
         subjects affected / exposed
    3 / 12 (25.00%)
    1 / 7 (14.29%)
         occurrences all number
    7
    1
    Immune system disorders
    Hypersensitivity
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    2
    0
    Respiratory, thoracic and mediastinal disorders
    Dyspnoea
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Dyspnoea exertional
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Nasal congestion
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Oropharyngeal pain
         subjects affected / exposed
    2 / 12 (16.67%)
    1 / 7 (14.29%)
         occurrences all number
    3
    1
    Throat irritation
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Wheezing
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Psychiatric disorders
    Insomnia
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Investigations
    Activated partial thromboplastin time prolonged
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Anion gap increased
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Blood bicarbonate decreased
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Blood creatinine increased
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Blood urea increased
         subjects affected / exposed
    1 / 12 (8.33%)
    1 / 7 (14.29%)
         occurrences all number
    1
    1
    Electrocardiogram T wave abnormal
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    International normalised ratio increased
         subjects affected / exposed
    1 / 12 (8.33%)
    1 / 7 (14.29%)
         occurrences all number
    1
    1
    Nitrite urine present
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Red blood cells urine positive
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Urine protein/creatinine ratio increased
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    pH urine increased
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Injury, poisoning and procedural complications
    Allergic transfusion reaction
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Congenital, familial and genetic disorders
    Sickle cell anaemia with crisis
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    5
    Nervous system disorders
    Dizziness
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Headache
         subjects affected / exposed
    2 / 12 (16.67%)
    2 / 7 (28.57%)
         occurrences all number
    4
    2
    Hypoaesthesia
         subjects affected / exposed
    2 / 12 (16.67%)
    2 / 7 (28.57%)
         occurrences all number
    4
    3
    Neuropathy peripheral
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Paraesthesia
         subjects affected / exposed
    2 / 12 (16.67%)
    4 / 7 (57.14%)
         occurrences all number
    3
    5
    Gastrointestinal disorders
    Abdominal pain
         subjects affected / exposed
    1 / 12 (8.33%)
    1 / 7 (14.29%)
         occurrences all number
    1
    1
    Constipation
         subjects affected / exposed
    1 / 12 (8.33%)
    3 / 7 (42.86%)
         occurrences all number
    1
    4
    Diarrhoea
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Dyspepsia
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Eructation
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Faeces discoloured
         subjects affected / exposed
    1 / 12 (8.33%)
    1 / 7 (14.29%)
         occurrences all number
    1
    1
    Frequent bowel movements
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Gastrooesophageal reflux disease
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Hiatus hernia
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Nausea
         subjects affected / exposed
    1 / 12 (8.33%)
    1 / 7 (14.29%)
         occurrences all number
    1
    2
    Regurgitation
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Vomiting
         subjects affected / exposed
    3 / 12 (25.00%)
    1 / 7 (14.29%)
         occurrences all number
    4
    1
    Skin and subcutaneous tissue disorders
    Erythema
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Pruritus allergic
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Renal and urinary disorders
    Chromaturia
         subjects affected / exposed
    2 / 12 (16.67%)
    2 / 7 (28.57%)
         occurrences all number
    2
    2
    Glycosuria
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Leukocyturia
         subjects affected / exposed
    1 / 12 (8.33%)
    1 / 7 (14.29%)
         occurrences all number
    1
    1
    Polyuria
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Proteinuria
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Musculoskeletal and connective tissue disorders
    Arthralgia
         subjects affected / exposed
    2 / 12 (16.67%)
    0 / 7 (0.00%)
         occurrences all number
    2
    0
    Back pain
         subjects affected / exposed
    2 / 12 (16.67%)
    1 / 7 (14.29%)
         occurrences all number
    8
    1
    Flank pain
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Limb discomfort
         subjects affected / exposed
    1 / 12 (8.33%)
    1 / 7 (14.29%)
         occurrences all number
    1
    1
    Muscle spasms
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    2
    Myalgia
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Neck pain
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Pain in extremity
         subjects affected / exposed
    1 / 12 (8.33%)
    2 / 7 (28.57%)
         occurrences all number
    1
    4
    Sensation of heaviness
         subjects affected / exposed
    2 / 12 (16.67%)
    0 / 7 (0.00%)
         occurrences all number
    2
    0
    Infections and infestations
    Bacteriuria
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Gastroenteritis
         subjects affected / exposed
    0 / 12 (0.00%)
    1 / 7 (14.29%)
         occurrences all number
    0
    1
    Influenza
         subjects affected / exposed
    1 / 12 (8.33%)
    1 / 7 (14.29%)
         occurrences all number
    1
    1
    Nasopharyngitis
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    2
    0
    Rhinitis
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Tonsillitis
         subjects affected / exposed
    1 / 12 (8.33%)
    1 / 7 (14.29%)
         occurrences all number
    1
    1
    Upper respiratory tract infection
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0
    Metabolism and nutrition disorders
    Folate deficiency
         subjects affected / exposed
    1 / 12 (8.33%)
    0 / 7 (0.00%)
         occurrences all number
    1
    0

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    29 Apr 2013
    Summary of key changes: - Increased the number of potential sites - Revised the timeframe for non-directive questions to query subjects regarding AEs and the withdrawal criteria for subjects with protocol deviations/violations or related serious AEs - Removed PK serum iron assessment - Clarified the following: number of subjects for BID dosing; Endpoint 3; study population; use of liver and pancreas in R2* MRI; time and nature of end-of-treatment visit; start of screening procedures; subjects who have already consented and provided a DNA sample while under QD dosing were not asked for another; eligibility for another SPD602 study - Changed the following: dosing regimen-QD to BID; Inclusion criteria 3, 7, and 9 and exclusion criterion 3; pre-visit timing of MRIs; baseline period - Updated the following: MRI windows; study design; PK parameters; AE collection window; potential study duration; blood samples for plasma PK assessment; follow-up period for reporting pregnancies -Added the following: cardiac (T2*) iron and left ventricular ejection fraction (LVEF) assessment, neurological examination; Exclusion Criterion 13; LVEF <50% to withdrawal criteria and subjects who are re-randomly assigned from QD to BID dosing will not be re-screened; subsections to explain modified baseline procedures for subjects’ re-randomly assigned to BID dosing; subjects who received QD dosing then BID dosing only needed to be re-assessed for Exclusion Criterion 13 and downward dose titration under QD dosing; to footnote b that MRI R2* was to be collected wherever possible; times of serum ferritin measurements; subsections on how to transition subjects on QD to BID dosing - Specified the following: calculation and summary of LVEF and change from baseline to Weeks 12 and 24 by dose group; pancreatic iron concentrations from R2* MRI were to be listed and used as a safety signal; Safety Analysis Set; when subjects should be randomly assigned; time of LVEF
    02 Oct 2013
    Summary of key changes: - Updated Exclusion Criterion 3 with removal of “chronic cholecystitis” to reflect Investigator’s Brochure Version 7.0. - Updated Exclusion Criterion 5 with preliminary data from the completed SPD602-104 study that suggested a reduction in elimination of SPD602 in subjects with impaired renal function (estimated glomerular filtration rate <60mL/min, previously <40mL/min). - Clarified that Exclusion Criterion 13 only applied to LVEF below (not outside) the locally determined normal range or in subjects with LVEF <50%. - Clarified that echocardiograph was acceptable to assess LVEF if MRI information was not available. - Added information regarding preliminary data indicating that SPD602 was an inducer of cytochrome P450 2B6 isozyme (CYP2B6) and CYP3A4 in vitro and may have had potential drug interactions with these substrates in vivo. - Amended Primary Endpoint 3 to include LVEF as an example parameter. - Clarified that if a subject did not roll over to BID from QD he or she should have proceeded to the End-of-Treatment/Early Discontinuation Visit.
    31 Jan 2014
    Summary of key changes: - Changed title to reflect single treatment-arm analysis. - Specified sample size to enroll approximately 50 subjects to reach approximately 25 evaluable subjects enrolled at 50mg/kg/day administered BID dosing. - Adjusted objectives to reflect single treatment-arm analysis. - Removed the 75mg/kg/day treatment-arm to reflect single treatment-arm study and adjusted objectives, statistical endpoints, and analysis accordingly. - Changed the maximum dosage allowed from 75 to 50mg/kg/day. - Confirmed that subjects who were randomly assigned to 75mg/kg/day under the prior protocol version should immediately have their doses titrated downward to a total daily dose of 50mg/kg. - Added safety laboratory tests to screen for any underlying metabolic abnormalities that could have contributed to the development of suspected PN-related events. - Added guidance for evaluation of suspected PN-related events (including paresthesia and/or hypoesthesia) by investigators. Updated statistical endpoints and analysis to reflect single treatment-arm study design. - Added PN to AEs for management of study toxicities. - Clarified wording for AEs of potential interest in the event that subjects reported suspected PN-related events (including paresthesia or hypoesthesia). - Allowed pharmacokinetic assessment to be conducted starting at Week 4.

    Interruptions (globally)

    Were there any global interruptions to the trial? Yes
    Date
    Interruption
    Restart date
    03 Mar 2014
    This study was terminated due to treatment stop resulting in an inability to draw conclusions from the data. Evaluation of nonclinical rat findings is ongoing.
    -

    Limitations and caveats

    Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data.
    This study was terminated early because of non-clinical safety results. As such, not all subjects completed the study. The available efficacy data were summarized and analyzed as specified in the SAP; however, no efficacy conclusions could be drawn.
    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
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