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    Clinical Trial Results:
    An Open-Label, Phase 2, Pilot Study Investigating the Safety, Clinical Activity, Pharmacokinetics, and Pharmacodynamics of Oral Treatment with the BTK Inhibitor PRN1008 in Patients with Newly Diagnosed or Relapsing Pemphigus Vulgaris

    Summary
    EudraCT number
    2015-003564-37
    Trial protocol
    GR   HR  
    Global end of trial date
    10 Jan 2020

    Results information
    Results version number
    v1(current)
    This version publication date
    24 Jan 2021
    First version publication date
    24 Jan 2021
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    PRN1008-005
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT02704429
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Sanofi aventis recherche & développement
    Sponsor organisation address
    1 avenue Pierre Brossolette, Chilly-Mazarin, France, 91380
    Public contact
    Trial Transparency Team, Sanofi aventis recherche & développement , Contact-US@sanofi.com
    Scientific contact
    Trial Transparency Team, Sanofi aventis recherche & développement, Contact-US@sanofi.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
    05 Mar 2020
    Is this the analysis of the primary completion data?
    No
    Global end of trial reached?
    Yes
    Global end of trial date
    10 Jan 2020
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    To evaluate the clinical safety of rilzabrutinib in patients with pemphigus vulgaris (PV) over a 12-week (Part A) and 24-week (Part B) treatment period; To evaluate the clinical activity of rilzabrutinib in patients with PV, per criteria in the European Academy of Dermatology and Venereology 2014 Pemphigus S2 Guideline (Hertl 2015).
    Protection of trial subjects
    Subjects were fully informed of all pertinent aspects of the clinical trial as well as the possibility to discontinue at any time in language and terms appropriate for the subject and considering the local culture. During the course of the trial, subjects were provided with individual subject cards indicating the nature of the trial the subject was participating, contact details and any information needed in the event of a medical emergency. Collected personal data and human biological samples were processed in compliance with the Sanofi-Aventis Group Personal Data Protection Charter ensuring that the Group abides by the laws governing personal data protection in force in all countries in which it operates.
    Background therapy
    No background therapy was permitted. The use of oral prednis(ol)one may have been permitted in some circumstances. For admission to the study, doses of oral prednis(ol)one in the 2 weeks prior to Day 1 may have been no higher than 0.5 mg/kg/day (inhaled and mucosal [for symptomatic treatment of oral lesions] CS were allowed). Where patients entered the study on LDCS, the regimen should have been maintained for the initial 2 weeks of rilzabrutinib therapy. At the Day 15 review, a good clinical response to rilzabrutinib should have allowed the tapering of the CS to commence using the Werth taper. At all times, the rescue criteria should have been followed. In some circumstances, CS should have been added or the dose increased, with or without cessation of rilzabrutinib.
    Evidence for comparator
    -
    Actual start date of recruitment
    22 Jan 2016
    Long term follow-up planned
    No
    Independent data monitoring committee (IDMC) involvement?
    Yes
    Population of trial subjects
    Number of subjects enrolled per country
    Country: Number of subjects enrolled
    France: 6
    Country: Number of subjects enrolled
    Greece: 16
    Country: Number of subjects enrolled
    Australia: 13
    Country: Number of subjects enrolled
    Israel: 7
    Worldwide total number of subjects
    42
    EEA total number of subjects
    22
    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)
    39
    From 65 to 84 years
    3
    85 years and over
    0

    Subject disposition

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    Recruitment
    Recruitment details
    A total of 69 patients were screened for the study (52 patients in Part A and 18* patients in Part B). Of these, 41 unique patients were enrolled in the study (27 patients in Part A and 15* patients in Part B). *One patient who completed Part A of the study and later relapsed was enrolled in Part B.

    Pre-assignment
    Screening details
    Up to 28 days before dosing, patients signed an informed consent to screen and, after meeting eligibility criteria, received treatment. All patients who provided informed consent and had Screening assessments evaluated for study participation were part of the Screening population

    Period 1
    Period 1 title
    Overall - Part A + Part B (overall period)
    Is this the baseline period?
    Yes
    Allocation method
    Not applicable
    Blinding used
    Not blinded
    Blinding implementation details
    This was an open-label study.

    Arms
    Are arms mutually exclusive
    Yes

    Arm title
    Part A
    Arm description
    12 weeks of treatment, followed by 12 weeks of follow-up off treatment. The total duration of individual patient participation was approximately 28 weeks.
    Arm type
    Experimental

    Investigational medicinal product name
    PRN1008
    Investigational medicinal product code
    Other name
    rilzabrutinib
    Pharmaceutical forms
    Film-coated tablet
    Routes of administration
    Oral use
    Dosage and administration details
    Patients received 400 mg twice a day (BID) rilzabrutinib treatment for 12 weeks with intrapatient dose adjustment allowed up to 600 mg BID.

    Arm title
    Part B
    Arm description
    Total duration was 24 weeks of therapy, with a follow-up visit 4 weeks later. The total duration of individual patient participation was approximately 32 weeks.
    Arm type
    Experimental

    Investigational medicinal product name
    PRN1008
    Investigational medicinal product code
    Other name
    rilzabrutinib
    Pharmaceutical forms
    Film-coated tablet
    Routes of administration
    Oral use
    Dosage and administration details
    Patients initially received 400 mg once a day (QD) rilzabrutinib but were permitted to dose escalate to a maximum of 600 mg BID rilzabrutinib at the Investigator’s discretion.

    Number of subjects in period 1
    Part A Part B
    Started
    27
    15
    Completed
    24
    14
    Not completed
    3
    1
         Adverse event, non-fatal
    3
    -
         Worsening of pemphigus
    -
    1

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Part A
    Reporting group description
    12 weeks of treatment, followed by 12 weeks of follow-up off treatment. The total duration of individual patient participation was approximately 28 weeks.

    Reporting group title
    Part B
    Reporting group description
    Total duration was 24 weeks of therapy, with a follow-up visit 4 weeks later. The total duration of individual patient participation was approximately 32 weeks.

    Reporting group values
    Part A Part B Total
    Number of subjects
    27 15 42
    Age categorical
    One patient who completed Part A of the study and later relapsed was enrolled in Part B. Therefore baseline results of one patient are repeated in Part B and total patient number is 15.
    Units: Subjects
        Adults (18-64 years)
    24 15 39
        From 65-84 years
    3 0 3
    Gender categorical
    One patient who completed Part A of the study and later relapsed was enrolled in Part B. Therefore baseline results of one patient are repeated in Part B and total patient number is 15.
    Units: Subjects
        Female
    15 7 22
        Male
    12 8 20
    Race (NIH/OMB)
    One patient who completed Part A of the study and later relapsed was enrolled in Part B. Therefore baseline results of one patient are repeated in Part B and total patient number is 15.
    Units: Subjects
        American Indian or Alaska Native
    0 0 0
        Asian
    1 2 3
        Native Hawaiian or Other Pacific Islander
    0 0 0
        Black or African American
    0 0 0
        White
    22 8 30
        More than one race
    0 0 0
        Unknown or Not Reported
    4 5 9

    End points

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    End points reporting groups
    Reporting group title
    Part A
    Reporting group description
    12 weeks of treatment, followed by 12 weeks of follow-up off treatment. The total duration of individual patient participation was approximately 28 weeks.

    Reporting group title
    Part B
    Reporting group description
    Total duration was 24 weeks of therapy, with a follow-up visit 4 weeks later. The total duration of individual patient participation was approximately 32 weeks.

    Primary: Percentage of Participants With Treatment-emergent Adverse Events

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    End point title
    Percentage of Participants With Treatment-emergent Adverse Events [1]
    End point description
    Treatment-emergent adverse events (TEAEs) including clinically significant changes in physical examination, laboratory tests, and vital signs. An AE was defined as any untoward medical occurrence in a participant who received study drug and did not necessarily had to have a causal relationship with the treatment. TEAEs were defined as AEs that developed or worsened or became serious during on-treatment phase that was defined as the time from the start of study drug up to study completion. Analysis was done in Safety Analysis population which included All patients who received at least 1 dose of rilzabrutinib.
    End point type
    Primary
    End point timeframe
    Part A: until 24 weeks and Part B: until 28 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: Descriptive statistics has been presented for this endpoint.
    End point values
    Part A Part B
    Number of subjects analysed
    27
    15
    Units: percentage
    number (not applicable)
        Any TEAE
    74.1
    86.7
        Any serious TEAE
    11.1
    0
        Any TEAE leading to treatment discontinuation
    11.1
    0
    No statistical analyses for this end point

    Primary: Percentage of Participants Who Are Able to Achieve Control of Disease Activity (CDA) Within 4 Weeks of Starting PRN1008 Treatment Without the Need for Doses of Prednisone or Prednisolone >0.5 mg/kg

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    End point title
    Percentage of Participants Who Are Able to Achieve Control of Disease Activity (CDA) Within 4 Weeks of Starting PRN1008 Treatment Without the Need for Doses of Prednisone or Prednisolone >0.5 mg/kg [2]
    End point description
    CDA was defined as the time at which new lesions cease to form and established lesions begin to heal. Analysis was done in Intent-to-Treat (ITT) population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Primary
    End point timeframe
    4 weeks
    Notes
    [2] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point.
    Justification: Descriptive statistics has been presented for this endpoint.
    End point values
    Part A Part B
    Number of subjects analysed
    27
    15
    Units: percentage
    number (confidence interval 95%)
        Percentage of Participants Achieved CDA
    51.9 (31.9 to 71.3)
    60.0 (32.29 to 83.66)
    No statistical analyses for this end point

    Secondary: Percentage of Participants Able to Achieve Control of Disease Activity (CDA) Without Corticosteroids Within 4 Weeks

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    End point title
    Percentage of Participants Able to Achieve Control of Disease Activity (CDA) Without Corticosteroids Within 4 Weeks
    End point description
    CDA was defined as the time at which new lesions cease to form and established lesions begin to heal. Analysis was done in ITT population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    4 weeks
    End point values
    Part A Part B
    Number of subjects analysed
    27
    15
    Units: percentage
    number (confidence interval 95%)
        Participants Achieved CDA Without Corticosteroids
    11.1 (2.4 to 29.2)
    6.7 (0.17 to 31.95)
    No statistical analyses for this end point

    Secondary: Percentage of Participants Able to Achieve a Complete Response (CR) Without Corticosteroids

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    End point title
    Percentage of Participants Able to Achieve a Complete Response (CR) Without Corticosteroids
    End point description
    CR was defined as complete healing of all lesions and the absence of new lesions. Analysis was done in ITT population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    Part A: 12 weeks treatment and Part B: 24 weeks treatment
    End point values
    Part A Part B
    Number of subjects analysed
    27
    15
    Units: percentage
    number (not applicable)
        Participants Achieved CR without Corticosteroids
    0
    0
    No statistical analyses for this end point

    Secondary: Percentage of Participants Able to Achieve Complete Remission (CR) Without the Need for Doses of Prednisone or Prednisolone of Greater Than 0.5mg/kg

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    End point title
    Percentage of Participants Able to Achieve Complete Remission (CR) Without the Need for Doses of Prednisone or Prednisolone of Greater Than 0.5mg/kg
    End point description
    CR was defined as complete healing of all lesions and the absence of new lesions. Analysis was done in ITT population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    Part A: 12 weeks treatment and Part B: 24 weeks treatment
    End point values
    Part A Part B
    Number of subjects analysed
    27
    15
    Units: percentage
    number (confidence interval 95%)
        Participants Achieved Complete Remission (CR)
    14.8 (4.2 to 33.7)
    33.3 (11.82 to 61.62)
    No statistical analyses for this end point

    Secondary: Time to Control of Disease Activity (CDA)

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    End point title
    Time to Control of Disease Activity (CDA)
    End point description
    CDA was defined as the time at which new lesions cease to form and established lesions begin to heal. Kaplan-Meier estimate median time is reported. Analysis was done in ITT population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    Part A: until 24 weeks and Part B: until 28 weeks
    End point values
    Part A Part B
    Number of subjects analysed
    27
    15
    Units: Days
    median (confidence interval 80%)
        Time to CDA
    33.0 (29.0 to 58.0)
    29.0 (15.0 to 34.0)
    No statistical analyses for this end point

    Secondary: Time to End of Consolidation Phase (ECP)

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    End point title
    Time to End of Consolidation Phase (ECP)
    End point description
    ECP was defined as the time at which no new lesions have developed for minimum of 2 weeks, and approximately 80% of existing lesions have healed. Kaplan-Meier estimate median time is reported. Here, '99999' signifies that the upper CI was not estimable due to the insufficient number of patients with an ECP response. Analysis was done in ITT population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    Part A: until 24 weeks and Part B: until 28 weeks
    End point values
    Part A Part B
    Number of subjects analysed
    27
    15
    Units: Days
    median (confidence interval 80%)
        Time to End of Consolidation Phase (ECP)
    170.0 (95.0 to 99999)
    58.0 (48.0 to 99999)
    No statistical analyses for this end point

    Secondary: Time to Complete Remission (CR)

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    End point title
    Time to Complete Remission (CR)
    End point description
    CR was defined as complete healing of all lesions and the absence of new lesions. Here, '99999' signifies that the upper CI was not estimable because no patients in Part A of the study achieved CR at or prior to the Week 13 visit and no patients in Part B of the study achieved CR at or prior to the Week 25 visit. Analysis was done in ITT population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    Part A: until 24 weeks and Part B: until 28 weeks
    End point values
    Part A Part B
    Number of subjects analysed
    27
    15
    Units: Days
    median (confidence interval 80%)
        Time to CR
    99999 (99999 to 99999)
    99999 (99999 to 99999)
    No statistical analyses for this end point

    Secondary: Time to Relapse After PRN1008 Treatment Discontinuation

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    End point title
    Time to Relapse After PRN1008 Treatment Discontinuation
    End point description
    Relapse was defined as appearance of ≥3 new lesions/month that do not heal spontaneously within 1 week, or by extension of established lesions, in a patient who has achieved disease control. Kaplan-Meier estimate median time is reported. Analysis was done in ITT population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    Part A: until 24 weeks and Part B: until 28 weeks
    End point values
    Part A Part B
    Number of subjects analysed
    27
    15
    Units: Days
    median (full range (min-max))
        Relapse After PRN1008 Treatment Discontinuation
    96.0 (27.0 to 99.0)
    198.0 (41.0 to 209.0)
    No statistical analyses for this end point

    Secondary: Cumulative Corticosteroid Usage

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    End point title
    Cumulative Corticosteroid Usage
    End point description
    Cumulative Corticosteroid Usage. Analysis was done in ITT population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    Part A: until 24 weeks and Part B: until 28 weeks
    End point values
    Part A Part B
    Number of subjects analysed
    27
    15
    Units: mg
    arithmetic mean (standard deviation)
        Cumulative Corticosteroid Usage
    983.43 ( 827.676 )
    2089.600 ( 1274.011 )
    No statistical analyses for this end point

    Secondary: Percentage Change From Baseline in Pemphigus Disease Area Index (PDAI) Total Activity Scores

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    End point title
    Percentage Change From Baseline in Pemphigus Disease Area Index (PDAI) Total Activity Scores
    End point description
    The PDAI questionnaire has 2 components including activity and damage. The activity component consists of skin, scalp and mucosa parts, and the damage component consists of skin and scalp parts. The total activity score was used for the summary of PDAI scores. PDAI total activity score = Total skin activity + Total scalp activity + Total mucosa activity. PDAI Total Activity Score ranged from 0 to 250 points representing disease activity (higher scores mean a worse outcome). Negative change in total activity score from baseline indicates improvement in pemphigus activity. Analysis was done in ITT population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    Part A: until 24 weeks and Part B: until 28 weeks
    End point values
    Part A Part B
    Number of subjects analysed
    24
    14
    Units: percent
    arithmetic mean (standard deviation)
        End of treatment (n%)
    -55.7 ( 40.91 )
    -78.60 ( 35.839 )
        End of follow-up (n%)
    -57.7 ( 38.45 )
    -59.68 ( 48.403 )
    No statistical analyses for this end point

    Secondary: Change From Baseline in Autoimmune Bullous Skin Disorder Intensity Score (ABSIS) Total Activity Score

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    End point title
    Change From Baseline in Autoimmune Bullous Skin Disorder Intensity Score (ABSIS) Total Activity Score
    End point description
    ABSIS Total Activity Score ranged from 0 to 206 points representing disease activity (higher scores mean a worse outcome). Negative change in total activity score from baseline indicates improvement in pemphigus activity. Analysis was done in ITT population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    Part A: until 24 weeks and Part B: until 28 weeks
    End point values
    Part A Part B
    Number of subjects analysed
    24
    14
    Units: Not specified
    arithmetic mean (standard deviation)
        End of treatment
    -8.18 ( 14.475 )
    -6.591 ( 4.7664 )
        End of follow-up
    -9.98 ( 18.369 )
    -5.705 ( 4.6248 )
    No statistical analyses for this end point

    Secondary: Change From Baseline in Autoimmune Bullous Diseases Quality of Life (ABQOL)

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    End point title
    Change From Baseline in Autoimmune Bullous Diseases Quality of Life (ABQOL)
    End point description
    ABQOL score ranged from 0 to 68 points representing disease activity (higher scores mean a worse outcome). Analysis was done in Intent-to-Treat (ITT) population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    Part A: until 24 weeks and Part B: until 28 weeks
    End point values
    Part A Part B
    Number of subjects analysed
    24
    14
    Units: Not specified
    arithmetic mean (standard deviation)
        End of treatment
    -3.7 ( 6.96 )
    -6.36 ( 9.394 )
        End of follow-up
    -2.9 ( 6.71 )
    -3.79 ( 9.569 )
    No statistical analyses for this end point

    Secondary: Change From Baseline in Treatment of Autoimmune Bullous Diseases Quality of Life (TABQOL) Scores

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    End point title
    Change From Baseline in Treatment of Autoimmune Bullous Diseases Quality of Life (TABQOL) Scores
    End point description
    TABQOL score ranged from 0 to 68 points representing disease activity (higher scores mean a worse outcome). Analysis was done in ITT population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    Part A: until 24 weeks and Part B: until 28 weeks
    End point values
    Part A Part B
    Number of subjects analysed
    24
    14
    Units: Not specified
    arithmetic mean (standard deviation)
        End of treatment
    0 ( 6.73 )
    -2.00 ( 6.051 )
        End of follow-up
    -0.1 ( 5.92 )
    -2.14 ( 5.655 )
    No statistical analyses for this end point

    Secondary: Change From Baseline in Appetite (SNAQ Score)

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    End point title
    Change From Baseline in Appetite (SNAQ Score)
    End point description
    Simplified Nutritional Appetite Questionnaire (SNAQ) score ranged from 0 to 20 points representing disease activity (higher scores mean a better outcome). Analysis was done in ITT population which included all patients who received at least 1 dose of rilzabrutinib.
    End point type
    Secondary
    End point timeframe
    Part A: until 24 weeks and Part B: until 28 weeks
    End point values
    Part A Part B
    Number of subjects analysed
    24
    14
    Units: Not specified
    arithmetic mean (standard deviation)
        End of treatment
    1.1 ( 2.45 )
    0.21 ( 2.082 )
        End of follow-up
    1.0 ( 2.84 )
    0.50 ( 2.103 )
    No statistical analyses for this end point

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    Part A: until 24 weeks Part B: until 28 weeks
    Adverse event reporting additional description
    Reported AEs and deaths are TEAEs that developed, worsened, or became serious during the treatment period. Analysis was performed on safety population.
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    18.0
    Reporting groups
    Reporting group title
    Part A
    Reporting group description
    27 patients were enrolled in Part A population. 12 weeks of treatment, followed by 12 weeks of follow-up off treatment. The total duration of individual patient participation was approximately 28 weeks.

    Reporting group title
    Part B
    Reporting group description
    15 patients were enrolled in Part B population. Total duration was 24 weeks of therapy, starting on Day 1 and ending on Study Day 169, with a follow-up visit 4 weeks later. The total duration of individual patient participation was approximately 32 weeks.

    Serious adverse events
    Part A Part B
    Total subjects affected by serious adverse events
         subjects affected / exposed
    3 / 27 (11.11%)
    0 / 15 (0.00%)
         number of deaths (all causes)
    0
    0
         number of deaths resulting from adverse events
    0
    0
    Congenital, familial and genetic disorders
    Pulmonary sequestration
         subjects affected / exposed
    1 / 27 (3.70%)
    0 / 15 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Gastrointestinal disorders
    Pancreatic pseudocyst
         subjects affected / exposed
    1 / 27 (3.70%)
    0 / 15 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Respiratory, thoracic and mediastinal disorders
    Pneumonitis
         subjects affected / exposed
    1 / 27 (3.70%)
    0 / 15 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Infections and infestations
    Cellulitis
         subjects affected / exposed
    1 / 27 (3.70%)
    0 / 15 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 5%
    Non-serious adverse events
    Part A Part B
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    20 / 27 (74.07%)
    13 / 15 (86.67%)
    Neoplasms benign, malignant and unspecified (incl cysts and polyps)
    Anogenital warts
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Vascular disorders
    Hot flush
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    General disorders and administration site conditions
    Asthenia
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Fatigue
         subjects affected / exposed
    2 / 27 (7.41%)
    1 / 15 (6.67%)
         occurrences all number
    2
    1
    Oedema peripheral
         subjects affected / exposed
    1 / 27 (3.70%)
    1 / 15 (6.67%)
         occurrences all number
    1
    1
    Peripheral swelling
         subjects affected / exposed
    2 / 27 (7.41%)
    0 / 15 (0.00%)
         occurrences all number
    2
    0
    Reproductive system and breast disorders
    Amenorrhoea
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Respiratory, thoracic and mediastinal disorders
    Epistaxis
         subjects affected / exposed
    2 / 27 (7.41%)
    0 / 15 (0.00%)
         occurrences all number
    2
    0
    Oropharyngeal pain
         subjects affected / exposed
    1 / 27 (3.70%)
    1 / 15 (6.67%)
         occurrences all number
    1
    1
    Psychiatric disorders
    Anxiety
         subjects affected / exposed
    2 / 27 (7.41%)
    0 / 15 (0.00%)
         occurrences all number
    2
    0
    Terminal insomnia
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Investigations
    Activated partial thromboplastin time prolonged
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Blood creatine phosphokinase increased
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Blood glucose increased
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    International normalised ratio increased
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Nervous system disorders
    Dizziness
         subjects affected / exposed
    2 / 27 (7.41%)
    2 / 15 (13.33%)
         occurrences all number
    2
    2
    Dysgeusia
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Headache
         subjects affected / exposed
    4 / 27 (14.81%)
    1 / 15 (6.67%)
         occurrences all number
    4
    1
    Lethargy
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Migraine
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Paraesthesia
         subjects affected / exposed
    2 / 27 (7.41%)
    0 / 15 (0.00%)
         occurrences all number
    2
    0
    Sciatica
         subjects affected / exposed
    1 / 27 (3.70%)
    1 / 15 (6.67%)
         occurrences all number
    1
    1
    Ear and labyrinth disorders
    Ear pain
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Vertigo
         subjects affected / exposed
    2 / 27 (7.41%)
    0 / 15 (0.00%)
         occurrences all number
    2
    0
    Eye disorders
    Conjunctival haemorrhage
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Eye pain
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Vision blurred
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Gastrointestinal disorders
    Abdominal distension
         subjects affected / exposed
    1 / 27 (3.70%)
    2 / 15 (13.33%)
         occurrences all number
    1
    2
    Abdominal pain
         subjects affected / exposed
    2 / 27 (7.41%)
    0 / 15 (0.00%)
         occurrences all number
    2
    0
    Abdominal pain upper
         subjects affected / exposed
    3 / 27 (11.11%)
    1 / 15 (6.67%)
         occurrences all number
    3
    1
    Change of bowel habit
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Diarrhoea
         subjects affected / exposed
    3 / 27 (11.11%)
    0 / 15 (0.00%)
         occurrences all number
    3
    0
    Dry mouth
         subjects affected / exposed
    2 / 27 (7.41%)
    0 / 15 (0.00%)
         occurrences all number
    2
    0
    Gastrointestinal disorder
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Nausea
         subjects affected / exposed
    6 / 27 (22.22%)
    4 / 15 (26.67%)
         occurrences all number
    6
    4
    Stomatitis
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Teeth brittle
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Vomiting
         subjects affected / exposed
    2 / 27 (7.41%)
    0 / 15 (0.00%)
         occurrences all number
    2
    0
    Haematemesis
         subjects affected / exposed
    1 / 27 (3.70%)
    1 / 15 (6.67%)
         occurrences all number
    1
    1
    Hepatobiliary disorders
    Non-alcoholic steatohepatitis
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Skin and subcutaneous tissue disorders
    Alopecia
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Androgenetic alopecia
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Erythema
         subjects affected / exposed
    2 / 27 (7.41%)
    1 / 15 (6.67%)
         occurrences all number
    2
    1
    Erythema nodosum
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Pruritus
         subjects affected / exposed
    1 / 27 (3.70%)
    1 / 15 (6.67%)
         occurrences all number
    1
    1
    Rash
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Rash erythematous
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Urticaria
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Renal and urinary disorders
    Oliguria
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Musculoskeletal and connective tissue disorders
    Arthralgia
         subjects affected / exposed
    2 / 27 (7.41%)
    1 / 15 (6.67%)
         occurrences all number
    2
    1
    Back pain
         subjects affected / exposed
    1 / 27 (3.70%)
    1 / 15 (6.67%)
         occurrences all number
    1
    1
    Muscle spasms
         subjects affected / exposed
    2 / 27 (7.41%)
    1 / 15 (6.67%)
         occurrences all number
    2
    1
    Musculoskeletal chest pain
         subjects affected / exposed
    1 / 27 (3.70%)
    1 / 15 (6.67%)
         occurrences all number
    1
    1
    Musculoskeletal pain
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Neck pain
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Osteoporosis
         subjects affected / exposed
    1 / 27 (3.70%)
    1 / 15 (6.67%)
         occurrences all number
    1
    1
    Pain in extremity
         subjects affected / exposed
    2 / 27 (7.41%)
    1 / 15 (6.67%)
         occurrences all number
    2
    1
    Infections and infestations
    Dermatophytosis
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Nasopharyngitis
         subjects affected / exposed
    1 / 27 (3.70%)
    1 / 15 (6.67%)
         occurrences all number
    1
    1
    Pharyngitis streptococcal
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Sinusitis
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Staphylococcal skin infection
         subjects affected / exposed
    2 / 27 (7.41%)
    0 / 15 (0.00%)
         occurrences all number
    2
    0
    Tracheitis
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Upper respiratory tract infection
         subjects affected / exposed
    2 / 27 (7.41%)
    1 / 15 (6.67%)
         occurrences all number
    2
    1
    Vaginal infection
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1
    Metabolism and nutrition disorders
    Type 2 diabetes mellitus
         subjects affected / exposed
    0 / 27 (0.00%)
    1 / 15 (6.67%)
         occurrences all number
    0
    1

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    05 Oct 2015
    Protocol v2: - Test was added to the Screening procedures. Added the inclusion criterion, “Anti Dsg 3 ELISA titre >20 RU/mL”.
    04 Nov 2015
    Protocol v3.1: - Removed the inclusion criterion, “Anti Dsg-3 ELISA titre >20 RU/mL”; - Adjusted the washout period for strong to moderate inducers or inhibitors of CYP3A (exclusion criteria #8) and the use of CYP3A-sensitive substrate drugs (exclusion criteria #9) was changed from “14 days or 5 half-lives” to “7 days or 5 half-lives”.
    20 Apr 2016
    Protocol v4: - Added exploratory objective, “To evaluate the relationship of PK and PD to each other and to efficacy and safety in the patient population.”; - SNAQ appetite added as secondary endpoint; - Simplified inclusion criteria; - Anorexia nervosa and epilepsy added to exclusion criteria; - Adjusted the washout period for strong to moderate inducers or inhibitors of CYP3A (exclusion criterion #8) and the use of CYP3A-sensitive substrate drugs (exclusion criterion #9) was changed from “7 days or 5 half-lives” to “3 days or 5 half-lives”; - Serious infection added to exclusion criteria; - Live vaccine added to exclusion criteria; - Added that rilzabrutinib “should be taken with a glass of water”; - CPK and TSH (at each follow-up visit) added to laboratory assessments; - An SMC was implemented to periodically review patient safety; - Additional information added for the rationale for the selection of the starting dose; - Added concomitant medications, “Other immunosuppressive medications are not permitted except for low-dose CS and when rescue immunotherapy is triggered.”; - Added prior therapy not permitted, “ofatumumab, any other anti-CD20 antibody, or any other long-acting biologic”; - Deleted body temperature from Schedule of Assessments. Body temperature was measured as part of the vital signs assessment. Anti-DSG antibodies removed from Screening assessments; - Added clinical assessment to evaluate treatment safety, “Detailed neurological examination including cranial nerve assessment and MRI of the brain”.
    12 May 2017
    Protocol v4.1: - Added a list of seizure medications in exclusion criteria' - Revised protocol for inclusion of Part B of the study to primary objectives, study design and plan, dosing, study drug administration, secondary outcome measures, planned enrollment, inclusion criteria, exclusion criteria, study treatment and study treatment duration, intrapatient dose adjustment guidelines, etc. Allowed patients currently enrolled in PRN1008 005 (in active treatment) to be enrolled in Part B of the study. Modified protocol to allow for additional subgroup analysis and combining Part A and B data for analysis, where appropriate, and added an interim analysis report for Part A.
    06 Apr 2018
    Protocol v5.0: - Added a starting dose of 400 mg QD for patients in Part B of the study, with an exception for those continuing treatment from Part A of the study; - Modified Section 4.5.2 to clarify that proton pump inhibitors were not permitted during the study; - Modified Section 6.3.1 (Prior Therapy) to prohibit the use of intravenous gamma globulin within 4 weeks (rather than 12 weeks) of Day 1; - Added PDAI and ABSIS assessments to list of Screening assessments before the first dose of study drug; - Revised storage and handling requirements for study drug; - Revised exclusion criteria to allow patients who completed Part A (ie, not in active treatment) to be eligible for Screening in Part B.
    30 Jul 2018
    Protocol v6.0: - Removed body mass index requirement of >17.5 kg/m2 for Part B as an inclusion criterion.
    19 Mar 2019
    Protocol v7.0: - Revised exclusion criterion regarding patients with TB; - Added language to clarify that the disease under study was captured in efficacy endpoints and should not also be captured as an AE. Added more details for AE recording guidelines; - Revised language regarding the monitoring of treatment-related SAEs after study exit.

    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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