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    Clinical Trial Results:
    A Confirmatory Multicenter, Single-arm Study to Assess the Efficacy, Safety, and Tolerability of the BiTE® Antibody Blinatumomab in Adult Patients With Minimal Residual Disease (MRD) of B-precursor Acute Lymphoblastic Leukemia (BLAST)

    Summary
    EudraCT number
    2010-018314-75
    Trial protocol
    DE   BE   GB   AT   ES   CZ   FR   PL   IT   NL  
    Global end of trial date
    07 Jan 2019

    Results information
    Results version number
    v1(current)
    This version publication date
    02 Jan 2020
    First version publication date
    02 Jan 2020
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    MT103-203
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT01207388
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Amgen Inc.
    Sponsor organisation address
    One Amgen Center Drive, Thousand Oaks, CA, United States, 91320
    Public contact
    IHQ Medical Info-Clinical Trials, Amgen (EUROPE) GmbH, MedInfoInternational@amgen.com
    Scientific contact
    IHQ Medical Info-Clinical Trials, Amgen (EUROPE) GmbH, MedInfoInternational@amgen.com
    Paediatric regulatory details
    Is trial part of an agreed paediatric investigation plan (PIP)
    No
    Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial?
    No
    Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial?
    No
    Results analysis stage
    Analysis stage
    Final
    Date of interim/final analysis
    07 Jan 2019
    Is this the analysis of the primary completion data?
    No
    Global end of trial reached?
    Yes
    Global end of trial date
    07 Jan 2019
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    The purpose of this study is to confirm whether the bispecific T cell engager blinatumomab (MT103) is effective, safe and tolerable in the treatment of ALL patients with minimal residual disease.
    Protection of trial subjects
    This study was conducted in accordance with International Council for Harmonisation (ICH) Good Clinical Practice (GCP) regulations/guidelines, the GCPs applicable to all regions where the study was conducted and in accordance with the ethical principles set forth in the Declaration of Helsinki. The study protocol and all amendments, the informed consent form, and any accompanying materials provided to subjects were reviewed and approved by an Independent Ethics Committee (IEC), at each center/country. The investigator or his/her designee informed the subject of all aspects pertaining to the subject’s participation in the study before any screening procedures were performed.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    30 Nov 2010
    Long term follow-up planned
    Yes
    Long term follow-up rationale
    Efficacy
    Long term follow-up duration
    5 Years
    Independent data monitoring committee (IDMC) involvement?
    Yes
    Population of trial subjects
    Number of subjects enrolled per country
    Country: Number of subjects enrolled
    France: 12
    Country: Number of subjects enrolled
    Netherlands: 1
    Country: Number of subjects enrolled
    Romania: 3
    Country: Number of subjects enrolled
    Spain: 5
    Country: Number of subjects enrolled
    United Kingdom: 7
    Country: Number of subjects enrolled
    Austria: 4
    Country: Number of subjects enrolled
    Belgium: 10
    Country: Number of subjects enrolled
    Czech Republic: 1
    Country: Number of subjects enrolled
    Germany: 56
    Country: Number of subjects enrolled
    Italy: 15
    Country: Number of subjects enrolled
    Russian Federation: 2
    Worldwide total number of subjects
    116
    EEA total number of subjects
    114
    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)
    101
    From 65 to 84 years
    15
    85 years and over
    0

    Subject disposition

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    Recruitment
    Recruitment details
    This study was conducted at 46 centers in Austria, Belgium, Czech Republic, France, Germany, Italy, Netherlands, Romania, Russia, Spain, and the United Kingdom.

    Pre-assignment
    Screening details
    This study enrolled adults with a diagnosis of minimal residual disease (MRD; ≥ 10^-3 leukemic cells) -positive B-precursor acute lymphoblastic leukemia (ALL) who were in complete hematologic remission. A total of 211 subjects were screened; 116 subjects received at least 1 infusion of blinatumomab and were included in the full analysis set (FAS).

    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
    Blinatumomab
    Arm description
    Participants received blinatumomab as a continuous intravenous infusion at a constant flow rate of 15 μg/m²/day over 28 days followed by an infusion-free period of 14 days for up to 4 cycles of treatment. Participants suitable for allogeneic hematopoietic stem cell transplant (HSCT) after treatment with at least 1 cycle of blinatumomab may have undergone allogeneic HSCT instead of receiving further cycles with blinatumomab.
    Arm type
    Experimental

    Investigational medicinal product name
    Blinatumomab
    Investigational medicinal product code
    MT103
    Other name
    BLINCYTO™
    Pharmaceutical forms
    Powder for solution for infusion
    Routes of administration
    Intravenous use
    Dosage and administration details
    Administered by continuous intravenous infusion at a constant flow rate of 15 μg/m²/day over 28 days.

    Number of subjects in period 1
    Blinatumomab
    Started
    116
    Completed
    48
    Not completed
    68
         Consent withdrawn by subject
    1
         Death
    67

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Blinatumomab
    Reporting group description
    Participants received blinatumomab as a continuous intravenous infusion at a constant flow rate of 15 μg/m²/day over 28 days followed by an infusion-free period of 14 days for up to 4 cycles of treatment. Participants suitable for allogeneic hematopoietic stem cell transplant (HSCT) after treatment with at least 1 cycle of blinatumomab may have undergone allogeneic HSCT instead of receiving further cycles with blinatumomab.

    Reporting group values
    Blinatumomab Total
    Number of subjects
    116 116
    Age categorical
    Units: Subjects
        ≥ 18 and <35 years
    36 36
        ≥ 35 and < 55 years
    41 41
        ≥ 55 and < 65 years
    24 24
        ≥ 65 years
    15 15
    Age continuous
    Units: years
        arithmetic mean (standard deviation)
    44.6 ± 16.4 -
    Gender categorical
    Units: Subjects
        Female
    48 48
        Male
    68 68
    Race
    Race was not permitted to be collected in France.
    Units: Subjects
        White
    102 102
        Asian
    1 1
        Mixed
    1 1
        Unknown
    12 12
    Philadelphia Chromosome Disease Status
    Units: Subjects
        Positive
    5 5
        Negative
    111 111
    MRD Level at Baseline by Central Laboratory
    Measured by polymerase chain reaction (PCR) performed on bone marrow and assessed by the central laboratory; Lower limit of quantification was at least 10^-4 leukemic cells.
    Units: Subjects
        ≥ 10^-1 and < 1
    9 9
        ≥ 10^-2 and < 10^-1
    45 45
        ≥ 10^-3 and < 10^-2
    52 52
        < 10^-3
    3 3
        Below Lower Limit of Quantification
    5 5
        Unknown
    2 2
    Confirmed t(4;11) Translocation / MLL-AF4+ ALL
    t(4;11)(q21;q23) translocation, resulting in the fusion of the mixed lineage leukemia (MLL) gene on chromosome 11 and the AF4 gene on chromosome 4
    Units: Subjects
        Yes
    5 5
        No
    88 88
        Unknown
    23 23
    White Blood Cells at First Diagnosis
    Units: Subjects
        ≤ 30,000/mL
    78 78
        > 30,000/mL
    18 18
        Unknown
    20 20

    End points

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    End points reporting groups
    Reporting group title
    Blinatumomab
    Reporting group description
    Participants received blinatumomab as a continuous intravenous infusion at a constant flow rate of 15 μg/m²/day over 28 days followed by an infusion-free period of 14 days for up to 4 cycles of treatment. Participants suitable for allogeneic hematopoietic stem cell transplant (HSCT) after treatment with at least 1 cycle of blinatumomab may have undergone allogeneic HSCT instead of receiving further cycles with blinatumomab.

    Subject analysis set title
    Cycle 1 MRD 10^-5
    Subject analysis set type
    Sub-group analysis
    Subject analysis set description
    Participants with an MRD level 10^-5 at the end of cycle 1.

    Subject analysis set title
    Cycle 1 MRD 10^-4
    Subject analysis set type
    Sub-group analysis
    Subject analysis set description
    Participants with an MRD level 10^-4 at the end of cycle 1.

    Subject analysis set title
    Cycle 1 MRD 10^-3
    Subject analysis set type
    Sub-group analysis
    Subject analysis set description
    Participants with an MRD level 10^-3 at the end of cycle 1.

    Subject analysis set title
    Cycle 1 MRD 10^-1
    Subject analysis set type
    Sub-group analysis
    Subject analysis set description
    Participants with an MRD level 10^-1 at the end of cycle 1.

    Subject analysis set title
    Cycle 1 MRD Unknown
    Subject analysis set type
    Sub-group analysis
    Subject analysis set description
    Participants with an unknown MRD level at the end of cycle 1.

    Primary: Percentage of Participants With a Minimal Residual Disease (MRD) Response Within the First Treatment Cycle

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    End point title
    Percentage of Participants With a Minimal Residual Disease (MRD) Response Within the First Treatment Cycle [1]
    End point description
    At the end of the first treatment cycle (Day 29) a bone marrow aspiration/biopsy was performed and evaluated by the central MRD laboratory. Complete MRD response is defined as no polymerase chain reaction (PCR) amplification of individual rearrangements of immunoglobulin (Ig)- or T-cell receptor (TCR)-genes detected after completion of the first cycle. The analysis was conducted using the primary endpoint full analysis set (Prim EP FAS), which included all participants with an Ig TCR PCR MRD assay with the minimum required sensitivity of 1 x 10^-4 at central lab established at Baseline.
    End point type
    Primary
    End point timeframe
    During the first cycle (6 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: This was a single-arm study.
    End point values
    Blinatumomab
    Number of subjects analysed
    113
    Units: percentage of participants
        number (confidence interval 95%)
    77.0 (68.1 to 84.4)
    No statistical analyses for this end point

    Secondary: Hematological Relapse-free Survival (RFS)

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    End point title
    Hematological Relapse-free Survival (RFS)
    End point description
    Hematological RFS was measured from first dose of blinatumomab until the first assessment of documented relapse (either hematological or extramedullary), secondary leukemia, or death due to any cause. Participants without documented relapse or death were censored at the time of their last hematological assessment. Participants who received chemotherapy for relapsed or persistent MRD or for any other reason, or HSCT after blinatumomab treatment, before relapse or death occurred, were censored at the start of chemotherapy or HSCT, respectively. Hematological relapse was defined as unequivocal detection of > 5% leukemia cells in bone marrow as measured by cytological, microscopic assessment, presence of circulating leukemia blasts, or extramedullary leukemia, whichever occurred first. The 18-month Kaplan-Meier estimate of hematological RFS is reported. Analysis is based on FAS participants in hematological complete remission at treatment start, excluding Philadelphia-positive subjects.
    End point type
    Secondary
    End point timeframe
    18 months, up to the data cut-off date of 05 August 2015
    End point values
    Blinatumomab
    Number of subjects analysed
    110
    Units: percentage of participants
        number (confidence interval 95%)
    54 (33 to 70)
    No statistical analyses for this end point

    Secondary: Overall Survival

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    End point title
    Overall Survival
    End point description
    Overall survival was measured from the first treatment with blinatumomab until death due to any cause. Participants who did not die were censored at their last contact date. The analysis was conducted in the FAS. "99999" indicates data not estimable at the time of analysis due to the low number of events.
    End point type
    Secondary
    End point timeframe
    Until the data cut-off date of 05 August 2015; median time on study was 18.3 months.
    End point values
    Blinatumomab
    Number of subjects analysed
    116
    Units: months
        median (confidence interval 95%)
    36.5 (19.2 to 99999)
    No statistical analyses for this end point

    Secondary: 100-Day Mortality After Allogeneic Hematopoietic Stem Cell Transplant

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    End point title
    100-Day Mortality After Allogeneic Hematopoietic Stem Cell Transplant
    End point description
    The mortality rate within 100 days after allogeneic HSCT was defined as the Kaplan-Meier estimate of the percentage of participants dying within 100 days after the day of the first allogeneic HSCT. The analysis was based on FAS participants who underwent HSCT prior to relapse (hematological or extramedullary) excluding Philadelphia-positive participants.
    End point type
    Secondary
    End point timeframe
    100 days after HSCT, as of the data cut-off date of 05 August 2015
    End point values
    Blinatumomab
    Number of subjects analysed
    74
    Units: percentage of participants
        number (confidence interval 95%)
    7 (3 to 15)
    No statistical analyses for this end point

    Secondary: Time to Hematological Relapse

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    End point title
    Time to Hematological Relapse
    End point description
    Time to hematological relapse was measured from the start of treatment with blinatumomab until hematological or extramedullary relapse. Participants who died or received HSCT or post-blinatumomab chemotherapy after treatment with blinatumomab were censored at their last hematological assessment prior to death or HSCT or post-blinatumomab chemotherapy (whichever occurred first). The analysis was based on FAS participants who were in hematological complete remission at treatment start, excluding Philadelphia-positive participants. "99999" indicates data not estimable due to the low number of events.
    End point type
    Secondary
    End point timeframe
    Until the data cut-off date of 05 August 2015; median time on study was 18.3 months.
    End point values
    Blinatumomab
    Number of subjects analysed
    110
    Units: months
        median (confidence interval 95%)
    99999 (7.1 to 99999)
    No statistical analyses for this end point

    Secondary: Duration of Complete MRD Response

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    End point title
    Duration of Complete MRD Response
    End point description
    Duration of MRD response was analyzed as the time from onset of MRD negativity until MRD or hematological relapse or date of last confirmation of negative MRD status. Participants who received chemotherapy or HSCT after treatment with blinatumomab before hematological or extramedullary relapse were censored at the start of chemotherapy or HSCT, respectively. MRD relapse is defined as the reappearance of individual rearrangements of Ig- or TCR-genes ≥ lower limit of quantification (LLOQ) for at least 1 individual marker measured by an assay with a sensitivity of minimum 10^-4. Hematological relapse is defined as the unequivocal detection of > 5% leukemia cells in bone marrow as measured by cytological or microscopic assessment, presence of circulating leukemia blasts, or extramedullary leukemia. The analysis was based on FAS participants in hematological complete remission at treatment start, excluding Philadelphia-positive participants, who had an MRD complete response at cycle 1.
    End point type
    Secondary
    End point timeframe
    Until the data cut-off date of 05 August 2015; median time on study was 18.3 months.
    End point values
    Blinatumomab
    Number of subjects analysed
    85
    Units: months
        median (confidence interval 95%)
    45.0 (6.5 to 45.0)
    No statistical analyses for this end point

    Secondary: Change in MRD Level From Baseline to End of Cycle 1 in Non-MRD Responders

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    End point title
    Change in MRD Level From Baseline to End of Cycle 1 in Non-MRD Responders
    End point description
    MRD level was measured by polymerase chain reaction (PCR) performed on bone marrow and assessed by the central laboratory. An MRD level of 10^-n corresponds to residual leukemia cells at a frequency of 1 per 10ⁿ bone marrow cells. The analysis was conducted in FAS participants who were in hematological complete remission at treatment start, with no MRD Response in the first treatment cycle, excluding Philadelphia-positive participants.
    End point type
    Secondary
    End point timeframe
    Baseline and end of cycle 1 (6 weeks)
    End point values
    Cycle 1 MRD 10^-5 Cycle 1 MRD 10^-4 Cycle 1 MRD 10^-3 Cycle 1 MRD 10^-1 Cycle 1 MRD Unknown
    Number of subjects analysed
    2
    13
    4
    2
    2
    Units: participants
        Baseline MRD Unknown
    0
    1
    0
    0
    0
        Baseline MRD 10^-5
    0
    0
    0
    0
    0
        Baseline MRD 10^-4
    0
    1
    0
    0
    0
        Baseline MRD 10^-3
    1
    6
    2
    1
    0
        Baseline MRD 10^-2
    0
    5
    2
    1
    0
        Baseline MRD 10^-1
    1
    0
    0
    0
    2
    No statistical analyses for this end point

    Secondary: Number of Participants With Adverse Events

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    End point title
    Number of Participants With Adverse Events
    End point description
    Adverse events (AEs) were evaluated for severity according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE), version 4, as follows: Grade 1 - Mild AE; Grade 2 - Moderate AE; Grade 3 - Severe AE; Grade 4 - Life-threatening or disabling AE; Grade 5 - Death. The investigator used medical judgment to determine if there was a causal relationship (ie, related, unrelated) between an adverse event and blinatumomab. An AE was considered "serious" if it resulted in death, was life-threatening, required or prolonged inpatient hospitalization, resulted in persistent or significant incapacity or substantial disruption to conduct normal life functions, was a congenital anomaly or birth defect or was a medically important condition. Safety analyses were conducted in all participants who received any infusion of blinatumomab.
    End point type
    Secondary
    End point timeframe
    From the first dose of blinatumomab until 30 days after last dose; the median treatment duration was 55 days.
    End point values
    Blinatumomab
    Number of subjects analysed
    116
    Units: participants
        Any adverse event
    116
        Serious adverse events
    73
        Adverse events ≥ CTC grade 3
    71
        Adverse events ≥ CTC grade 4
    33
        Fatal adverse events
    2
        AEs leading to discontinuation of blinatumomab
    20
        AEs leading to interruption of blinatumomab
    36
        Treatment-related adverse events
    112
        Treatment-related serious adverse events
    60
        Treatment-related adverse events ≥ CTC grade 3
    60
        Treatment-related adverse events ≥ CTC grade 4
    26
        Treatment-related fatal adverse events
    1
    No statistical analyses for this end point

    Secondary: Maximum Change From Baseline in EORTC-QLQ-C30 Scales in Cycles 1 to 4

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    End point title
    Maximum Change From Baseline in EORTC-QLQ-C30 Scales in Cycles 1 to 4
    End point description
    The European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-C30 (EORTC QLQ-C30) is a 30-question tool used to assess the overall quality of life in cancer patients. It consists of 15 domains: 1 global health status (GHS) scale, 5 functional scales (Physical, Role, Cognitive, Emotional, Social), and 9 symptom scales/items (Fatigue, Nausea and Vomiting, Pain, Dyspnea, Insomnia, Appetite Loss, Constipation, Diarrhea, Financial Impact). For each of these scales, scores range from 0 to 100. For the GHS and 5 functional scales a high score indicates better global health status/functioning and a positive change from baseline indicates improvement. For the 9 symptom scales, a high score indicates a higher level of symptoms, and a negative change from Baseline indicates an improvement in symptoms. The maximum changes from baseline to cycles 1 through 4 in each domain are reported, in the full analysis set (FAS).
    End point type
    Secondary
    End point timeframe
    Baseline and day 29 of treatment cycles 1 - 4
    End point values
    Blinatumomab
    Number of subjects analysed
    111 [2]
    Units: units on a scale
    arithmetic mean (standard error)
        Global Health Status (n=26)
    9.0 ± 4.2
        Physical Functioning (n=26)
    2.6 ± 2.3
        Role Functioning (n=15)
    12.2 ± 8.5
        Emotional Functioning (n=26)
    6.5 ± 4.9
        Cognitive Functioning (n=15)
    -3.3 ± 5.2
        Social Functioning (n=15)
    12.2 ± 8.5
        Fatigue Symptom (n=15)
    -5.9 ± 5.5
        Nausea and Vomiting Symptom (n=26)
    -4.5 ± 4.7
        Pain Symptom (n=26)
    3.8 ± 3.6
        Dyspnea Symptom (n = 26)
    -9.0 ± 4.7
        Insomnia Symptom (n=26)
    -2.6 ± 3.2
        Appetite Loss Symptom (n=15)
    -17.8 ± 6.4
        Constipation Symptom (n=26)
    -5.1 ± 3.6
        Diarrhea Symptom (n=26)
    5.1 ± 5.5
        Financial Difficulties Symptom (n=26)
    -5.1 ± 4.8
    Notes
    [2] - n = subjects included in the calculation of each scale at the time point of maximum change.
    No statistical analyses for this end point

    Secondary: Change From Baseline in EORTC-QLQ-C30 Scales at the End of the Core Study

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    End point title
    Change From Baseline in EORTC-QLQ-C30 Scales at the End of the Core Study
    End point description
    The European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-C30 (EORTC QLQ-C30) is a 30-question tool used to assess the overall quality of life in cancer patients. It consists of 15 domains: 1 global health status (GHS) scale, 5 functional scales (Physical, Role, Cognitive, Emotional, Social), and 9 symptom scales/items (Fatigue, Nausea and Vomiting, Pain, Dyspnea, Insomnia, Appetite Loss, Constipation, Diarrhea, Financial Impact). For each of these scales, scores range from 0 to 100. For the GHS and 5 functional scales a high score indicates better global health status/functioning and a positive change from baseline indicates improvement. For the 9 symptom scales, a high score indicates a higher level of symptoms, and a negative change from Baseline indicates an improvement in symptoms.
    End point type
    Secondary
    End point timeframe
    Baseline and 30 days after end of the last infusion (end of the core study, a maximum of 26 weeks).
    End point values
    Blinatumomab
    Number of subjects analysed
    74 [3]
    Units: units on a scale
    arithmetic mean (standard error)
        Global Health Status (n=74)
    3.9 ± 2.4
        Physical Functioning (n=74)
    2.2 ± 1.9
        Role Functioning (n=72)
    1.4 ± 3.5
        Emotional Functioning (n=74)
    5.3 ± 2.7
        Cognitive Functioning (n=74)
    -2.3 ± 2.5
        Social Functioning (n=74)
    14.9 ± 3.8
        Fatigue Symptom (n=74)
    -5.4 ± 2.4
        Nausea and Vomiting Symptom (n=73)
    -2.3 ± 2.0
        Pain Symptom (n=74)
    -1.4 ± 2.7
        Dyspnea Symptom (n=74)
    -0.9 ± 2.9
        Insomnia Symptom (n=73)
    3.7 ± 3.5
        Appetite Loss Symptom (n=73)
    -9.1 ± 3.4
        Constipation Symptom (n=74)
    0.0 ± 2.2
        Diarrhea Symptom (n=74)
    0.0 ± 2.3
        Financial Difficulties Symptom (n=72)
    -0.9 ± 2.9
    Notes
    [3] - Full analysis set with available data
    No statistical analyses for this end point

    Secondary: Maximum Change From Baseline in EuroQoL 5-Dimension (EQ-5D) Scales During Cycles 1 to 4

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    End point title
    Maximum Change From Baseline in EuroQoL 5-Dimension (EQ-5D) Scales During Cycles 1 to 4
    End point description
    The EQ-5D is a self-administered questionnaire which captures 3 basic types of information: a descriptive profile (health state index) and the overall health rating using a visual analog scale. The health state index measures mobility, self-care, usual activities, pain/discomfort and anxiety/depression on scales from no problems (score = 1), some problems (score = 2), to extreme problems (score = 3). For each dimension the mean change from baseline was calculated at the end of each treatment cycle and at the end of the core study. The maximum observed change from baseline during cycles 1 to 4 are reported for each dimension in the FAS.
    End point type
    Secondary
    End point timeframe
    Baseline and day 29 of treatment cycles 1 - 4
    End point values
    Blinatumomab
    Number of subjects analysed
    112 [4]
    Units: units on a scale
    arithmetic mean (standard error)
        Mobility (n=14)
    -0.2 ± 0.1
        Self-care (n=13)
    -0.1 ± 0.1
        Usual Activities (n=27)
    -0.1 ± 0.1
        Pain/Discomfort (n=14)
    -0.2 ± 0.2
        Anxiety/Depression (n=56)
    -0.2 ± 0.1
    Notes
    [4] - n = subjects included in the calculation of each scale at the time point of maximum change
    No statistical analyses for this end point

    Secondary: Change From Baseline in EuroQoL 5-Dimension (EQ-5D) Scales at the End of the Core Study

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    End point title
    Change From Baseline in EuroQoL 5-Dimension (EQ-5D) Scales at the End of the Core Study
    End point description
    The EQ-5D is a self-administered questionnaire which captures 3 basic types of information: a descriptive profile (health state index) and the overall health rating using a visual analog scale. The health state index measures mobility, self-care, usual activities, pain/discomfort and anxiety/depression on scales from no problems (score = 1), some problems (score = 2), to extreme problems (score = 3). For each dimension the mean change from baseline was calculated at the end of each treatment cycle and at the end of the core study.
    End point type
    Secondary
    End point timeframe
    Baseline and 30 days after end of the last infusion (end of the core study, a maximum of 26 weeks).
    End point values
    Blinatumomab
    Number of subjects analysed
    75 [5]
    Units: units on a scale
    arithmetic mean (standard error)
        Mobility (n=75)
    0.0 ± 0.1
        Self-care (n=73)
    0.0 ± 0.0
        Usual Activities (n=75)
    -0.1 ± 0.1
        Pain/Discomfort (n=75)
    -0.1 ± 0.1
        Anxiety/Depression (n=75)
    -0.1 ± 0.1
    Notes
    [5] - Full analysis set with available data
    No statistical analyses for this end point

    Secondary: Resource Utilization: Number of Participants Reporting Use of Transfusion of Blood Products

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    End point title
    Resource Utilization: Number of Participants Reporting Use of Transfusion of Blood Products
    End point description
    Resource utilization was analyzed in all participants in the FAS.
    End point type
    Secondary
    End point timeframe
    From first dose of study drug through the end of follow-up; median (minimum, maximum) time on study was 33.8 (1, 62) months
    End point values
    Blinatumomab
    Number of subjects analysed
    116
    Units: participants
        Overall
    14
        Cycle 1
    5
        Cycle 2
    8
        Cycle 3
    0
        Cycle 4
    1
        Follow-up Period
    0
    No statistical analyses for this end point

    Secondary: Resource Utilization: Duration of Hospitalization

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    End point title
    Resource Utilization: Duration of Hospitalization
    End point description
    Resource utilization was analyzed in all participants in the FAS.
    End point type
    Secondary
    End point timeframe
    From first dose of study drug through the end of follow-up; median (minimum, maximum) time on study was 33.8 (1, 62) months.
    End point values
    Blinatumomab
    Number of subjects analysed
    116
    Units: days
        median (full range (min-max))
    14.0 (3 to 63)
    No statistical analyses for this end point

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    From the first dose of blinatumomab until 30 days after last dose; the median treatment duration was 55 days.
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    18
    Reporting groups
    Reporting group title
    Blinatumomab [15 ug/m2/d]
    Reporting group description
    Participants received blinatumomab as a continuous intravenous infusion at a constant flow rate of 15 µg/m²/day over 28 days followed by an infusion-free period of 14 days for up to 4 cycles of treatment.

    Serious adverse events
    Blinatumomab [15 ug/m2/d]
    Total subjects affected by serious adverse events
         subjects affected / exposed
    73 / 116 (62.93%)
         number of deaths (all causes)
    67
         number of deaths resulting from adverse events
    Neoplasms benign, malignant and unspecified (incl cysts and polyps)
    Kaposi's sarcoma
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Leukaemia
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Vascular disorders
    Hypotension
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Thrombosis
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Vena cava thrombosis
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    General disorders and administration site conditions
    Device issue
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Device malfunction
         subjects affected / exposed
    2 / 116 (1.72%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Fatigue
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Gait disturbance
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Infusion site extravasation
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Puncture site pain
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Product contamination microbial
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Pyrexia
         subjects affected / exposed
    17 / 116 (14.66%)
         occurrences causally related to treatment / all
    19 / 19
         deaths causally related to treatment / all
    0 / 0
    Thrombosis in device
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Immune system disorders
    Hypersensitivity
         subjects affected / exposed
    2 / 116 (1.72%)
         occurrences causally related to treatment / all
    2 / 2
         deaths causally related to treatment / all
    0 / 0
    Cytokine release syndrome
         subjects affected / exposed
    2 / 116 (1.72%)
         occurrences causally related to treatment / all
    2 / 2
         deaths causally related to treatment / all
    0 / 0
    Psychiatric disorders
    Agitation
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Confusional state
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Disorientation
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Investigations
    Alanine aminotransferase increased
         subjects affected / exposed
    2 / 116 (1.72%)
         occurrences causally related to treatment / all
    2 / 2
         deaths causally related to treatment / all
    0 / 0
    Body temperature increased
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Blood bilirubin increased
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Aspartate aminotransferase increased
         subjects affected / exposed
    2 / 116 (1.72%)
         occurrences causally related to treatment / all
    2 / 2
         deaths causally related to treatment / all
    0 / 0
    C-reactive protein increased
         subjects affected / exposed
    4 / 116 (3.45%)
         occurrences causally related to treatment / all
    4 / 5
         deaths causally related to treatment / all
    0 / 0
    Hepatic enzyme increased
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 2
         deaths causally related to treatment / all
    0 / 0
    Liver function test abnormal
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Prothrombin time prolonged
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Injury, poisoning and procedural complications
    Accidental overdose
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Incision site haemorrhage
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Infusion related reaction
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Overdose
         subjects affected / exposed
    5 / 116 (4.31%)
         occurrences causally related to treatment / all
    3 / 5
         deaths causally related to treatment / all
    0 / 0
    Post lumbar puncture syndrome
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Thermal burn
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Subdural haemorrhage
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Spinal fracture
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Cardiac disorders
    Sinus bradycardia
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Sinus tachycardia
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Nervous system disorders
    Aphasia
         subjects affected / exposed
    6 / 116 (5.17%)
         occurrences causally related to treatment / all
    8 / 8
         deaths causally related to treatment / all
    0 / 0
    Ataxia
         subjects affected / exposed
    2 / 116 (1.72%)
         occurrences causally related to treatment / all
    2 / 2
         deaths causally related to treatment / all
    0 / 0
    Cognitive disorder
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Dysarthria
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    2 / 2
         deaths causally related to treatment / all
    0 / 0
    Intention tremor
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Headache
         subjects affected / exposed
    2 / 116 (1.72%)
         occurrences causally related to treatment / all
    2 / 2
         deaths causally related to treatment / all
    0 / 0
    Generalised tonic-clonic seizure
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Encephalopathy
         subjects affected / exposed
    6 / 116 (5.17%)
         occurrences causally related to treatment / all
    7 / 7
         deaths causally related to treatment / all
    0 / 0
    Motor dysfunction
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Leukoencephalopathy
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Paraesthesia
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Seizure
         subjects affected / exposed
    3 / 116 (2.59%)
         occurrences causally related to treatment / all
    3 / 3
         deaths causally related to treatment / all
    0 / 0
    Tremor
         subjects affected / exposed
    8 / 116 (6.90%)
         occurrences causally related to treatment / all
    14 / 14
         deaths causally related to treatment / all
    0 / 0
    Blood and lymphatic system disorders
    Anaemia
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Bone marrow failure
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Febrile neutropenia
         subjects affected / exposed
    2 / 116 (1.72%)
         occurrences causally related to treatment / all
    1 / 2
         deaths causally related to treatment / all
    0 / 0
    Leukopenia
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Neutropenia
         subjects affected / exposed
    5 / 116 (4.31%)
         occurrences causally related to treatment / all
    3 / 6
         deaths causally related to treatment / all
    0 / 0
    Thrombocytopenia
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Gastrointestinal disorders
    Diarrhoea
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Abdominal pain
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Gastrointestinal haemorrhage
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Hepatobiliary disorders
    Hepatotoxicity
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Skin and subcutaneous tissue disorders
    Dermatitis contact
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Rash maculo-papular
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Infections and infestations
    Acinetobacter bacteraemia
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Atypical pneumonia
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    1 / 1
    Bronchopulmonary aspergillosis
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Bronchopneumonia
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Bacterial infection
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Cystitis klebsiella
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Device related infection
         subjects affected / exposed
    3 / 116 (2.59%)
         occurrences causally related to treatment / all
    0 / 3
         deaths causally related to treatment / all
    0 / 0
    H1N1 influenza
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Osteomyelitis
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Sepsis
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Sinusitis
         subjects affected / exposed
    2 / 116 (1.72%)
         occurrences causally related to treatment / all
    1 / 2
         deaths causally related to treatment / all
    0 / 0
    Upper respiratory tract infection
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Staphylococcal infection
         subjects affected / exposed
    3 / 116 (2.59%)
         occurrences causally related to treatment / all
    1 / 3
         deaths causally related to treatment / all
    0 / 0
    Urinary tract infection staphylococcal
         subjects affected / exposed
    1 / 116 (0.86%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 5%
    Non-serious adverse events
    Blinatumomab [15 ug/m2/d]
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    111 / 116 (95.69%)
    Investigations
    Weight increased
         subjects affected / exposed
    7 / 116 (6.03%)
         occurrences all number
    7
    C-reactive protein increased
         subjects affected / exposed
    6 / 116 (5.17%)
         occurrences all number
    7
    Blood immunoglobulin G decreased
         subjects affected / exposed
    6 / 116 (5.17%)
         occurrences all number
    6
    Vascular disorders
    Hypertension
         subjects affected / exposed
    7 / 116 (6.03%)
         occurrences all number
    9
    Hypotension
         subjects affected / exposed
    13 / 116 (11.21%)
         occurrences all number
    17
    Nervous system disorders
    Headache
         subjects affected / exposed
    44 / 116 (37.93%)
         occurrences all number
    61
    Dizziness
         subjects affected / exposed
    9 / 116 (7.76%)
         occurrences all number
    10
    Aphasia
         subjects affected / exposed
    9 / 116 (7.76%)
         occurrences all number
    10
    Paraesthesia
         subjects affected / exposed
    6 / 116 (5.17%)
         occurrences all number
    6
    Tremor
         subjects affected / exposed
    28 / 116 (24.14%)
         occurrences all number
    34
    Blood and lymphatic system disorders
    Neutropenia
         subjects affected / exposed
    14 / 116 (12.07%)
         occurrences all number
    18
    Leukopenia
         subjects affected / exposed
    7 / 116 (6.03%)
         occurrences all number
    8
    Anaemia
         subjects affected / exposed
    6 / 116 (5.17%)
         occurrences all number
    8
    General disorders and administration site conditions
    Chills
         subjects affected / exposed
    30 / 116 (25.86%)
         occurrences all number
    35
    Pyrexia
         subjects affected / exposed
    99 / 116 (85.34%)
         occurrences all number
    177
    Fatigue
         subjects affected / exposed
    27 / 116 (23.28%)
         occurrences all number
    29
    Gastrointestinal disorders
    Constipation
         subjects affected / exposed
    13 / 116 (11.21%)
         occurrences all number
    16
    Diarrhoea
         subjects affected / exposed
    22 / 116 (18.97%)
         occurrences all number
    27
    Nausea
         subjects affected / exposed
    27 / 116 (23.28%)
         occurrences all number
    33
    Vomiting
         subjects affected / exposed
    26 / 116 (22.41%)
         occurrences all number
    32
    Respiratory, thoracic and mediastinal disorders
    Cough
         subjects affected / exposed
    15 / 116 (12.93%)
         occurrences all number
    20
    Skin and subcutaneous tissue disorders
    Night sweats
         subjects affected / exposed
    7 / 116 (6.03%)
         occurrences all number
    7
    Rash
         subjects affected / exposed
    11 / 116 (9.48%)
         occurrences all number
    12
    Psychiatric disorders
    Insomnia
         subjects affected / exposed
    17 / 116 (14.66%)
         occurrences all number
    18
    Musculoskeletal and connective tissue disorders
    Back pain
         subjects affected / exposed
    10 / 116 (8.62%)
         occurrences all number
    16
    Arthralgia
         subjects affected / exposed
    15 / 116 (12.93%)
         occurrences all number
    18
    Pain in extremity
         subjects affected / exposed
    8 / 116 (6.90%)
         occurrences all number
    9
    Infections and infestations
    Device related infection
         subjects affected / exposed
    6 / 116 (5.17%)
         occurrences all number
    6
    Nasopharyngitis
         subjects affected / exposed
    8 / 116 (6.90%)
         occurrences all number
    10
    Metabolism and nutrition disorders
    Hypokalaemia
         subjects affected / exposed
    18 / 116 (15.52%)
         occurrences all number
    21
    Hypomagnesaemia
         subjects affected / exposed
    6 / 116 (5.17%)
         occurrences all number
    7

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    04 Feb 2011
    - Update storage and stability information - Update to labeling information
    04 Jul 2011
    - Add collection of blinatumomab immunogenicity sample - Update known and potential benefits and risks - Implement prescreening for early detection of MRD - Update MRD assay requirements - Update inclusion criteria #4 (diagnosis of ALL) - Update labeling information - Update storage and stability information - Update preparation of drug product - Update safety follow-up for subjects who undergo HSCT - Update early termination - Update definitions in drug safety - Add information regarding legal and ethical requirements and protocol amendments - Clarify the following: duration of subject participation, intense chemotherapy, informed consent, writing test, examination of CSF, selected sites for ECG and PK assessments - Implement minor administrative changes and update references and contacts
    17 Feb 2012
    - Add a provision to implement additional urgent safety measures in case of neurologic-related adverse events - Change contact details for drug safety department and safe reporting - Adapt patient information and informed consent form
    11 Jul 2012
    - Update assessment schedule - Update list of contacts - Update known and potential benefits and risks - Add a provision to restart drug at a lower dose in the case of neurologic-related adverse events - Add C-reactive Protein testing - Clarify the following: retreatment cycles, efficacy assessments, hospitalization, discontinuation criteria, use of premedication, MRD sample requirements, assessment for neurologic-relate adverse events, reporting periods for adverse events, safety reporting procedures
    06 Mar 2014
    - Amend the key secondary objective/endpoint
    13 Jun 2014
    - Harmonize the description of the blinatumomab and its preparation with the Investigator's Brochure and other clinical trials within the blinatumomab clinical development program

    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

    Online references

    http://www.ncbi.nlm.nih.gov/pubmed/29358182
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