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    Clinical Trial Results:
    An Open-Label, Single-Arm, Safety and Efficacy Study of Recombinant Human Factor IX (rFIX, BeneFIX ) in Children Less Than 6 Years of Age With Severe Hemophilia B

    Summary
    EudraCT number
    2014-004155-32
    Trial protocol
    Outside EU/EEA  
    Global end of trial date
    13 Nov 2007

    Results information
    Results version number
    v1(current)
    This version publication date
    13 Apr 2016
    First version publication date
    23 Jul 2015
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    3090A1-301
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT00037557
    WHO universal trial number (UTN)
    -
    Other trial identifiers
    Alias: B1821035
    Sponsors
    Sponsor organisation name
    Pfizer Inc.
    Sponsor organisation address
    235 E 42nd Street, New York, United States, NY 10017
    Public contact
    Pfizer Clinical Trials.gov Call Centre, Pfizer Inc, 001 8007181021, ClinicalTrials.gov_Inquiries@pfizer.com
    Scientific contact
    Pfizer Clinical Trials.gov Call Centre, Pfizer Inc, 001 8007181021, ClinicalTrials.gov_Inquiries@pfizer.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?
    Yes
    Results analysis stage
    Analysis stage
    Final
    Date of interim/final analysis
    06 Jun 2008
    Is this the analysis of the primary completion data?
    No
    Global end of trial reached?
    Yes
    Global end of trial date
    13 Nov 2007
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    To characterize the safety and efficacy of recombinant factor IX (rFIX) in children less than 6 years of age with severe hemophilia B in the setting of acute bleeding episodes, prophylaxis, and/or surgery.
    Protection of trial subjects
    The study was in compliance with the ethical principles derived from the Declaration of Helsinki and in compliance with all  International Conference on  Harmonization (ICH) Good Clinical Practice (GCP) Guidelines. All the local regulatory requirements  pertinent to safety of trial subjects were followed.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    14 Oct 2002
    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
    Canada: 1
    Country: Number of subjects enrolled
    Netherlands: 1
    Country: Number of subjects enrolled
    Sweden: 2
    Country: Number of subjects enrolled
    Spain: 2
    Country: Number of subjects enrolled
    France: 1
    Country: Number of subjects enrolled
    United States: 16
    Country: Number of subjects enrolled
    United Kingdom: 2
    Worldwide total number of subjects
    25
    EEA total number of subjects
    8
    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)
    7
    Children (2-11 years)
    18
    Adolescents (12-17 years)
    0
    Adults (18-64 years)
    0
    From 65 to 84 years
    0
    85 years and over
    0

    Subject disposition

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    Recruitment
    Recruitment details
    -

    Pre-assignment
    Screening details
    Total 25 subjects were enrolled in 16 centres of 7 countries. Study started on 14 Oct 2002 and completed on 13 Nov 2007.

    Period 1
    Period 1 title
    Overall study (overall period)
    Is this the baseline period?
    Yes
    Allocation method
    Not applicable
    Blinding used
    Not blinded

    Arms
    Arm title
    Recombinant Factor IX
    Arm description
    Subjects received on-demand treatments with rFIX, prophylactic treatment or administered related to a surgical procedure according to investigator’s discretion over a 12-month (calendar day) period.
    Arm type
    Experimental

    Investigational medicinal product name
    rFIX
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Infusion
    Routes of administration
    Intravenous use
    Dosage and administration details
    A single 75 International Unit (IU)/kg intravenous (IV) bolus infusion of rFIX was given for recovery assessments on Day 1 followed by rFIX bolus infusions or continuous infusion (CI). Subjects also received doses for treatment of bleeding episodes, prophylaxis and surgery. Doses were at the investigators' discretion.

    Number of subjects in period 1
    Recombinant Factor IX
    Started
    25
    Completed
    23
    Not completed
    2
         Consent withdrawn by subject
    1
         Protocol violation
    1

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Recombinant Factor IX
    Reporting group description
    Subjects received on-demand treatments with rFIX, prophylactic treatment or administered related to a surgical procedure according to investigator’s discretion over a 12-month (calendar day) period.

    Reporting group values
    Recombinant Factor IX Total
    Number of subjects
    25 25
    Age categorical
    Units: Subjects
    Age continuous
    Units: years
        arithmetic mean (standard deviation)
    2.4 ( 1.2 ) -
    Gender categorical
    Units: Subjects
        Female
    0 0
        Male
    25 25

    End points

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    End points reporting groups
    Reporting group title
    Recombinant Factor IX
    Reporting group description
    Subjects received on-demand treatments with rFIX, prophylactic treatment or administered related to a surgical procedure according to investigator’s discretion over a 12-month (calendar day) period.

    Primary: Number of Subjects With Laboratory Abnormalities

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    End point title
    Number of Subjects With Laboratory Abnormalities [1]
    End point description
    Laboratory tests included hematology (hematocrit, hemoglobin, red blood cell count, white blood cell count, platelet count) and chemistry (glucose, albumin, alanine aminotransferase, alkaline phosphatase, aspartate aminotransferase, bicarbonate, total bilirubin, total protein, creatinine, sodium, potassium, chloride, lactate dehydrogenase). Assays were based on World Health Organization Recommendations for grading scale for AEs (grade 0 [none], grade 1 [mild AE: did not cause any significant problem]; grade 2 [moderate AE: caused problem that did not interfere significantly with usual activities or the clinical status]; grade 3 [severe AE: caused problem that interfered significantly with usual activities or the clinical status] and grade 4 [life threatening AE]). Intent-to-treat (ITT) population included all subjects who received at least 1 dose of study drug.
    End point type
    Primary
    End point timeframe
    Baseline up to Month 12
    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: Only descriptive data was planned to be reported for this end point.
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    25
    Units: Subjects
        number (not applicable)
    0
    No statistical analyses for this end point

    Primary: Dose Per Infusion Required for On-demand Therapy

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    End point title
    Dose Per Infusion Required for On-demand Therapy [2]
    End point description
    Mean dose per infusion in international unit(s)/kilogram (IU/kg) was the average dose for all infusions (including loading dose) needed to maintain bleeding episodes on demand. Efficacy analysis population included all subjects who receive at least one dose of on-demand study drug and accumulated at least 30 exposure days (EDs) to rFIX over a minimum of 6 months. Minimally treated patient (MTPs) and previously untreated patient (PUPs) were considered evaluable if they accumulated at least 10 EDs to rFIX and completed 12 months of study participation.
    End point type
    Primary
    End point timeframe
    Day 1 up to Month 12
    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: Only descriptive data was planned to be reported for this end point.
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    16 [3]
    Units: IU/kg
        arithmetic mean (standard deviation)
    75 ( 24.6 )
    Notes
    [3] - Subjects evaluable for this end point.
    No statistical analyses for this end point

    Primary: Number of Infusions Per Subject Required For On-demand Therapy

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    End point title
    Number of Infusions Per Subject Required For On-demand Therapy [4]
    End point description
    The number of rFIX infusions per subject required to treat bleeding episodes on demand, were analyzed. Efficacy analysis population included all subjects who receive at least one dose of on-demand study drug and accumulated at least 30 EDs to rFIX over a minimum of 6 months. MTPs and PUPs were considered evaluable if they accumulated at least 10 EDs to rFIX and completed 12 months of study participation.
    End point type
    Primary
    End point timeframe
    Day 1 up to Month 12
    Notes
    [4] - 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: Only descriptive data was planned to be reported for this end point.
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    16 [5]
    Units: Infusions
        arithmetic mean (standard deviation)
    5.9 ( 4.4 )
    Notes
    [5] - Subjects evaluable for this end point.
    No statistical analyses for this end point

    Primary: Response to On-Demand Treatment for All Bleeding Episodes

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    End point title
    Response to On-Demand Treatment for All Bleeding Episodes [6]
    End point description
    Response to the infusions of rFIX treatment was assessed using a 4-point scale. The 4-point scale was used by the patient, caregiver or investigator to measure response to on-demand treatment of a bleed. This assessment was made approximately 24 hours after the infusion or before the next infusion for the same bleeding episode. Grading of the response rate was: Excellent (dramatic response with clear reduction in joint or bleed site’s size), Good (required additional infusion for resolution), Moderate (requiring several additional infusions for resolution), and No Response (no improvement at all). Responses to number of observations were noted. Efficacy analysis population included all subjects who receive at least one dose of on-demand study drug and accumulated at least 30 EDs to rFIX over a minimum of 6 months. MTPs and PUPs were considered evaluable if they accumulated at least 10 EDs to rFIX and completed 10 EDs to rFIX and completed 12 months of study participation.
    End point type
    Primary
    End point timeframe
    Day 1 up to Month 12
    Notes
    [6] - 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: Only descriptive data was planned to be reported for this end point.
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    16 [7]
    Units: Infusions
    number (not applicable)
        Excellent
    41
        Good
    42
        Moderate
    8
        No Response
    0
    Notes
    [7] - From 16 subjects receiving on demand therapy, 91 infusions were evaluable for this end point.
    No statistical analyses for this end point

    Primary: Dose Per Infusion Required For Prophylaxis Therapy

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    End point title
    Dose Per Infusion Required For Prophylaxis Therapy [8]
    End point description
    Mean dose per infusion was the average dose for all infusions (including loading dose) needed for prophylaxis therapy. Efficacy analysis population included all subjects who receive at least one dose of prophylaxis study drug and accumulated at least 30 EDs to rFIX over a minimum of 6 months. MTPs and PUPs were considered evaluable if they accumulated at least 10 EDs to rFIX and completed 10 EDs to rFIX and completed 12 months of study participation.
    End point type
    Primary
    End point timeframe
    Day 1 up to Month 12
    Notes
    [8] - 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: Only descriptive data was planned to be reported for this end point.
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    22
    Units: IU/kg
        arithmetic mean (standard deviation)
    64.6 ( 21.3 )
    No statistical analyses for this end point

    Primary: Number of Infusions Per Subject Required for Prophylaxis Therapy

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    End point title
    Number of Infusions Per Subject Required for Prophylaxis Therapy [9]
    End point description
    The number of rFIX infusions required for prophylaxis therapy per subject were analyzed. Efficacy analysis population included all subjects who receive at least one dose of prophylaxis study drug and accumulated at least 30 EDs to rFIX over a minimum of 6 months. MTPs and PUPs were considered evaluable if they accumulated at least 10 EDs to rFIX and completed 10 EDs to rFIX and completed 12 months of study participation.
    End point type
    Primary
    End point timeframe
    Day 1 up to Month 12
    Notes
    [9] - 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: Only descriptive data was planned to be reported for this end point.
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    22
    Units: Infusions
        arithmetic mean (standard deviation)
    36.5 ( 13.1 )
    No statistical analyses for this end point

    Primary: Number of Breakthrough (Spontaneous and Traumatic) Bleeds Within 48 Hours of a Prophylaxis Dose of Recombinant Factor IX

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    End point title
    Number of Breakthrough (Spontaneous and Traumatic) Bleeds Within 48 Hours of a Prophylaxis Dose of Recombinant Factor IX [10]
    End point description
    The number of spontaneous and traumatic breakthrough bleeds within 48 hours following a prophylaxis dose of rFIX were summarized. If there was more than one bleed location with identical bleed start date and time, it was treated as one bleed occurrence. Breakthrough bleeding episodes for subjects on prophylaxis was analyzed based on the day of the bleeding episode relative to the last infusion and whether the episodes were due to injury (traumatic) or occurred spontaneously. Efficacy analysis population included all subjects who receive at least one dose of prophylaxis study drug and accumulated at least 30 EDs to rFIX over a minimum of 6 months. MTPs and PUPs were considered evaluable if they accumulated at least 10 EDs to rFIX and completed 10 EDs to rFIX and completed 12 months of study participation.
    End point type
    Primary
    End point timeframe
    Day 1 up to Month 12
    Notes
    [10] - 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: Only descriptive data was planned to be reported for this end point.
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    22
    Units: breakthrough bleeds within 48 hours
    number (not applicable)
        Spontaneous breakthrough bleeds
    1
        Traumatic breakthrough bleeds
    16
    No statistical analyses for this end point

    Primary: Dose Per Infusion Required For Surgical Prophylaxis

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    End point title
    Dose Per Infusion Required For Surgical Prophylaxis [11]
    End point description
    Mean dose per infusion was the average dose for all infusions (including loading dose) needed for surgical prophylaxis. Efficacy analysis population included all subjects who receive at least one dose of study drug for surgical purposes and accumulated at least 30 EDs to rFIX over a minimum of 6 months. MTPs and PUPs were considered evaluable if they accumulated at least 10 EDs to rFIX and completed 10 EDs to rFIX and completed 12 months of study participation.
    End point type
    Primary
    End point timeframe
    Month 1 up to Month 12
    Notes
    [11] - 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: Only descriptive data was planned to be reported for this end point.
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    2 [12]
    Units: IU/kg
        arithmetic mean (standard deviation)
    91.7 ( 21.2 )
    Notes
    [12] - Subjects evaluable for this end point.
    No statistical analyses for this end point

    Primary: Number of Infusions Per Subject Required for Surgical Prophylaxis

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    End point title
    Number of Infusions Per Subject Required for Surgical Prophylaxis [13]
    End point description
    The number of rFIX infusions required for surgical prophylaxis per subject were analyzed. Efficacy analysis population included all subjects who receive at least one dose of study drug for surgical purposes and accumulated at least 30 EDs to rFIX over a minimum of 6 months. MTPs and PUPs were considered evaluable if they accumulated at least 10 EDs to rFIX and completed 10 EDs to rFIX and completed 12 months of study participation.
    End point type
    Primary
    End point timeframe
    Day 1 up to Month 12
    Notes
    [13] - 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: Only descriptive data was planned to be reported for this end point.
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    2 [14]
    Units: Infusions
        arithmetic mean (standard deviation)
    12 ( 2.8 )
    Notes
    [14] - Subjects evaluable for this end point.
    No statistical analyses for this end point

    Primary: Physician's Global Assessment of Efficacy

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    End point title
    Physician's Global Assessment of Efficacy [15]
    End point description
    Physician used the 5-point scale to provide an overall assessment of the subjects treatment with study drug. The assessment was based on subjects diary records, adverse events (AEs), laboratory results and response to treatment. The parameters of the 5-point scale were Very Useful, Useful, Slightly Useful, Useless, and Unfavorable. Efficacy analysis population included all subjects who receive at least one dose of study drug and accumulated at least 30 EDs to rFIX over a minimum of 6 months. MTPs and PUPs were considered evaluable if they accumulated at least 10 EDs to rFIX and completed 10 EDs to rFIX and completed 12 months of study participation.
    End point type
    Primary
    End point timeframe
    Day 1 up to Month 12
    Notes
    [15] - 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: Only descriptive data was planned to be reported for this end point.
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    25 [16]
    Units: Assessments
    number (not applicable)
        Very Useful
    65
        Useful
    11
        Slightly Useful
    0
        Useless
    0
        Unfavorable
    0
    Notes
    [16] - From 25 subjects, 76 physician's assessments were evaluable for this end point.
    No statistical analyses for this end point

    Secondary: Number of Subjects With Anti-FIX Inhibitor

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    End point title
    Number of Subjects With Anti-FIX Inhibitor
    End point description
    Presence of activity-neutralizing antibodies against FIX (FIX inhibitor) was detected using the Bethesda Inhibitor Assay (BIA). An inhibitor test result greater than or equal to (>=) 0.6 Bethesda units per milliliter (BU/mL), identified and confirmed by re-testing of a second sample obtained within 2 to 4 weeks, was considered positive by the central laboratory. ITT population included all subjects who received at least 1 dose of study drug.
    End point type
    Secondary
    End point timeframe
    Baseline up to Month 12
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    25
    Units: Subjects
        number (not applicable)
    1
    No statistical analyses for this end point

    Secondary: Number of Subjects With Anti-FIX Antibody

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    End point title
    Number of Subjects With Anti-FIX Antibody
    End point description
    Anti-FIX Enzyme-linked immunosorbent assay (ELISA) was used for monitoring clinically significant anti-FIX antibody. Anti-FIX ELISA was an assay that detects neutralizing and non-neutralizing antibodies to FIX. All assays were performed at a central laboratory. ITT population included all subjects who received at least 1 dose of study drug.
    End point type
    Secondary
    End point timeframe
    Baseline up to Month 12
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    25
    Units: Subjects
        number (not applicable)
    1
    No statistical analyses for this end point

    Secondary: Number of Subjects With Thrombogenicity

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    End point title
    Number of Subjects With Thrombogenicity
    End point description
    Thrombogenicity was defined as any event associated with the formation of a blood clot, including catheter-associated thrombi and thrombotic complications in treated subjects. Markers of coagulation including thrombin/antithrombin III complex (TAT), D-Dimer and prothrombin fragment 1+2 were assessed. ITT population included all subjects who received at least 1 dose of study drug.
    End point type
    Secondary
    End point timeframe
    Baseline up to Month 12
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    25
    Units: Subjects
        number (not applicable)
    0
    No statistical analyses for this end point

    Secondary: Number of Subjects With Allergic-Type Manifestations

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    End point title
    Number of Subjects With Allergic-Type Manifestations
    End point description
    Allergic-type manifestations included any physiologic response following administration of rFIX characterized by urticaria, pruritus, eczema, fever, wheezing and/or acute asthma exacerbation. Symptoms also included dyspnea, tearing, sneezing, violent cough, chest constriction, skin eruptions, skin rash, pulse variations, cyanosis, convulsions or circulatory collapse. ITT population included all subjects who received at least 1 dose of study drug.
    End point type
    Secondary
    End point timeframe
    Baseline up to Month 12
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    25
    Units: Subjects
        number (not applicable)
    1
    No statistical analyses for this end point

    Secondary: Number of Subjects With Red Blood Cell (RBC) Agglutination

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    End point title
    Number of Subjects With Red Blood Cell (RBC) Agglutination
    End point description
    RBC Agglutination was the clumping of red blood cells in the presence of an antibody. The antibody or other molecule bonded multiple particles and joined them, creating a large complex. ITT population included all subjects who received at least 1 dose of study drug.
    End point type
    Secondary
    End point timeframe
    Baseline up to Month 12
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    25
    Units: Subjects
        number (not applicable)
    0
    No statistical analyses for this end point

    Secondary: Number of Subjects With Seroconversion

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    End point title
    Number of Subjects With Seroconversion
    End point description
    Subjects with antibody formation to hepatitis types (A, B, C) and human immunodeficiency virus (HIV)-1 and HIV-2 were analyzed. Any positive ELISA results for HIV were to be confirmed by Western Blot. ITT population included all subjects who received at least 1 dose of study drug.
    End point type
    Secondary
    End point timeframe
    Baseline up to 12 months
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    25
    Units: Subjects
        number (not applicable)
    0
    No statistical analyses for this end point

    Secondary: Incremental Recovery of Recombinant Factor IX in Subjects Following a 75-IU/kg Bolus Infusion

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    End point title
    Incremental Recovery of Recombinant Factor IX in Subjects Following a 75-IU/kg Bolus Infusion
    End point description
    Incremental recovery (K) in subjects following a 75-IU/kg bolus infusion, defined as the international units per deciliter (IU/dL) rise in plasma per IU/kg of drug administered. ITT population included all subjects who received at least 1 dose of study drug, n=number of subjects evaluable for  this measure at specified time points. Here "99999" in the  standard deviation at Month 9 signifies not available (NA). Standard deviation was not estimable as only 1 subject was evaluable for this time point.
    End point type
    Secondary
    End point timeframe
    Baseline, Month 1, Month 3, Month 6, Month 9, Month 12
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    25
    Units: IU/dL per IU/kg
    arithmetic mean (standard deviation)
        Baseline (n=23)
    0.57 ( 0.09 )
        Month 1 (n=21)
    0.55 ( 0.11 )
        Month 3 (n=20)
    0.58 ( 0.07 )
        Month 6 (n=6)
    0.58 ( 0.18 )
        Month 9 (n=1)
    0.75 ( 99999 )
        Month 12 (n=20)
    0.61 ( 0.1 )
    No statistical analyses for this end point

    Secondary: Total Dose of Recombinant Factor IX Required Per Subject Throughout the Study

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    End point title
    Total Dose of Recombinant Factor IX Required Per Subject Throughout the Study
    End point description
    Total dose was the sum across all infusions (including loading dose) throughout the study. Efficacy analysis population included all subjects who receive at least one dose of study drug and accumulated at least 30 EDs to rFIX over a minimum of 6 months. MTPs and PUPs were considered evaluable if they accumulated at least 10 EDs to rFIX and completed 10 EDs to rFIX and completed 12 months of study participation.
    End point type
    Secondary
    End point timeframe
    Day 1 up to Month 12
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    22
    Units: IU
        arithmetic mean (standard deviation)
    47968.3 ( 14927.9 )
    No statistical analyses for this end point

    Secondary: Number of Subjects With Lack of Effect: For On-demand Treatment

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    End point title
    Number of Subjects With Lack of Effect: For On-demand Treatment
    End point description
    Failure of rFIX Also known as “Lack of Effect.” For on-demand treatment: a “No Response” rating after each of 2 successive infusions of rFIX administered within 24 hours of each other for the treatment of the same bleeding episode in the absence of confounding factors. ITT population included all subjects who received at least 1 dose of study drug to treat a bleeding episode.
    End point type
    Secondary
    End point timeframe
    Baseline up to Month 12
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    16 [17]
    Units: Subjects
        number (not applicable)
    0
    Notes
    [17] - Subjects evaluable for this end point. 
    No statistical analyses for this end point

    Secondary: Number of Subjects With Lack of Effect: For Prophylaxis

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    End point title
    Number of Subjects With Lack of Effect: For Prophylaxis
    End point description
    Failure to prevent breakthrough bleeding episodes within 48 hours of a routine prophylaxis rFIX infusion in the absence of other confounding factors (eg, trauma, injury, incorrect dose). ITT population included all subjects who received at least 1 prophylaxis dose of study drug.
    End point type
    Secondary
    End point timeframe
    Baseline up to Month 12
    End point values
    Recombinant Factor IX
    Number of subjects analysed
    22 [18]
    Units: Subjects
        number (not applicable)
    0
    Notes
    [18] - Subjects evaluable for this end point. 
    No statistical analyses for this end point

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    Baseline up to 30 days after last dose of study drug administration
    Adverse event reporting additional description
    The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and  as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
    Assessment type
    Non-systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    17.1
    Reporting groups
    Reporting group title
    Recombinant Factor IX
    Reporting group description
    Subjects received on ­demand treatments with rFIX or prophylactic treatment or administered related to a surgical procedure according to investigator’s  prescription over a 12­ month (calendar day) period.

    Serious adverse events
    Recombinant Factor IX
    Total subjects affected by serious adverse events
         subjects affected / exposed
    1 / 25 (4.00%)
         number of deaths (all causes)
    0
         number of deaths resulting from adverse events
    0
    Blood and lymphatic system disorders
    Factor IX inhibition
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences causally related to treatment / all
    3 / 3
         deaths causally related to treatment / all
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 0%
    Non-serious adverse events
    Recombinant Factor IX
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    23 / 25 (92.00%)
    Vascular disorders
    Haematoma
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    2
    General disorders and administration site conditions
    Fatigue
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Infusion site extravasation
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    2
    Mass
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    5
    Oedema peripheral
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Pain
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Pyrexia
         subjects affected / exposed
    14 / 25 (56.00%)
         occurrences all number
    29
    Vaccination site pain
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Immune system disorders
    Hypersensitivity
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    3
    Reproductive system and breast disorders
    Genital erythema
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Penile oedema
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Penile pain
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Respiratory, thoracic and mediastinal disorders
    Asthma
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    4
    Catarrh
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    4
    Cough
         subjects affected / exposed
    10 / 25 (40.00%)
         occurrences all number
    21
    Nasal congestion
         subjects affected / exposed
    7 / 25 (28.00%)
         occurrences all number
    15
    Pulmonary congestion
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Rhinorrhoea
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    5
    Sinus disorder
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    2
    Sneezing
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Psychiatric disorders
    Irritability
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    3
    Investigations
    Blood urea increased
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Cardiac murmur
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Fibrin D dimer increased
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    2
    Laboratory test abnormal
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    3
    Injury, poisoning and procedural complications
    Arthropod bite
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    2
    Bite
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    3
    Eye injury
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Face injury
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    4
    Head injury
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    2
    Injury
         subjects affected / exposed
    4 / 25 (16.00%)
         occurrences all number
    6
    Joint injury
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    2
    Laceration
         subjects affected / exposed
    3 / 25 (12.00%)
         occurrences all number
    5
    Ligament sprain
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Limb injury
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    2
    Lip injury
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Mouth injury
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Procedural pain
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Skin abrasion
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Skin injury
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Transfusion reaction
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Nervous system disorders
    Headache
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    3
    Lethargy
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    2
    Ear and labyrinth disorders
    Ear pain
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Eye disorders
    Orbital oedema
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Gastrointestinal disorders
    Abdominal discomfort
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Diarrhoea
         subjects affected / exposed
    3 / 25 (12.00%)
         occurrences all number
    3
    Flatulence
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Gingival inflammation
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Lip oedema
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Oral mucosal eruption
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Stomatitis
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Teething
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Vomiting
         subjects affected / exposed
    9 / 25 (36.00%)
         occurrences all number
    12
    Skin and subcutaneous tissue disorders
    Erythema
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    2
    Rash
         subjects affected / exposed
    4 / 25 (16.00%)
         occurrences all number
    4
    Rash macular
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Urticaria
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    2
    Musculoskeletal and connective tissue disorders
    Arthralgia
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    2
    Back pain
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Musculoskeletal disorder
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Pain in extremity
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Infections and infestations
    Bronchitis
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    2
    Catheter site infection
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Conjunctivitis
         subjects affected / exposed
    3 / 25 (12.00%)
         occurrences all number
    3
    Croup infectious
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    3
    Ear infection
         subjects affected / exposed
    3 / 25 (12.00%)
         occurrences all number
    4
    Gastroenteritis
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Nasopharyngitis
         subjects affected / exposed
    11 / 25 (44.00%)
         occurrences all number
    19
    Otitis externa
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    2
    Otitis media
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    2
    Pharyngitis
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    3
    Rash pustular
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Sinusitis
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Upper respiratory tract infection
         subjects affected / exposed
    3 / 25 (12.00%)
         occurrences all number
    4
    Viral infection
         subjects affected / exposed
    1 / 25 (4.00%)
         occurrences all number
    1
    Metabolism and nutrition disorders
    Decreased appetite
         subjects affected / exposed
    2 / 25 (8.00%)
         occurrences all number
    3

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    10 May 2002
    One exclusion criteria was modified to permit the inclusion of patients that test positive to hepatitis but do not have fulminant disease. Chemistry and hematology testing were reduced to be measured at 2 time-points only, in order to reduce the volume of blood drawn in the study. The total volume of blood drawn for this study was decreased to 175 mL. Information to describe the dose estimation and preparation of rFIX in the event continuous infusion was added. Addition of the information that all BIA positive inhibitors were to be reported as SAE.
    26 Aug 2004
    Evaluable criteria for minimally treated patient (MTPs) and previously untreated patient (PUPs) were modified to 10 exposure days in 12 months. Clarification that the times for recovery blood collections was based on the completion of the infusion was added. Change SAE and event of interest (EOI) reporting timeframe from 24 hours to 1 business day. Explanation of nominal versus actual potency of the study drug was added.

    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
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