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    Clinical Trial Results:
    A Phase II Study of PNT2258 in Patients With Richter's Transformation (RT)

    Summary
    EudraCT number
    2015-001814-85
    Trial protocol
    GB   BE   HU  
    Global end of trial date
    07 Jun 2016

    Results information
    Results version number
    v1(current)
    This version publication date
    13 Mar 2020
    First version publication date
    13 Mar 2020
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    PNT2258-04-Richter's
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT02378038
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    ProNAi Therapeutics, Inc. (now known as Sierra Oncology)
    Sponsor organisation address
    46701 Commerce Center Drive, Plymouth Michigan, United States, 48170
    Public contact
    Corporate Affairs, Sierra Oncology, info@sierraoncology.com
    Scientific contact
    Corporate Affairs, Sierra Oncology, info@sierraoncology.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
    22 Aug 2016
    Is this the analysis of the primary completion data?
    Yes
    Primary completion date
    07 Jun 2016
    Global end of trial reached?
    Yes
    Global end of trial date
    07 Jun 2016
    Was the trial ended prematurely?
    Yes
    General information about the trial
    Main objective of the trial
    To assess overall response rate (ORR) defined as the proportion of patients with complete response (CR) or partial response (PR) according to the revised 2014 International Working Group (IWG) criteria for lymphomas based upon blinded independent review.
    Protection of trial subjects
    An Independent Data Monitoring Committee was established in order to monitor the ongoing safety of subjects enrolled in the study.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    15 Oct 2015
    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
    United States: 5
    Worldwide total number of subjects
    5
    EEA total number of subjects
    0
    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)
    0
    From 65 to 84 years
    5
    85 years and over
    0

    Subject disposition

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    Recruitment
    Recruitment details
    The study was initiated in August 2015 and the first subject was enrolled on 27 October 2015. Enrollment was closed as of 07 June 2016. Subjects were enrolled at oncology clinics in the USA.

    Pre-assignment
    Screening details
    7 subjects entered screening. 2 subjects did not meet the eligibility criteria, and thus 5 subjects were enrolled to the study.

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

    Arms
    Arm title
    PNT2258
    Arm description
    PNT2258 administered at 120 mg/m2 on days 1-5 of a 21-day cycle for 8 induction cycles followed by continuation phase therapy at a dose of 100 mg/m2 on days 1-4 of a 28-day cycle.
    Arm type
    Experimental

    Investigational medicinal product name
    PNT2258
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Dispersion for infusion
    Routes of administration
    Intravenous use
    Dosage and administration details
    PNT2258 administered at 120 mg/m2 on days 1-5 of a 21-day cycle for 8 induction cycles followed by continuation phase therapy at a dose of 100 mg/m2 on days 1-4 of a 28-day cycle.

    Number of subjects in period 1
    PNT2258
    Started
    5
    Completed
    0
    Not completed
    5
         Disease progression
    4
         Death
    1

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Overall trial
    Reporting group description
    -

    Reporting group values
    Overall trial Total
    Number of subjects
    5 5
    Age categorical
    Units: Subjects
    Age continuous
    Units: years
        median (full range (min-max))
    73 (65 to 76) -
    Gender categorical
    Units: Subjects
        Female
    2 2
        Male
    3 3

    End points

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    End points reporting groups
    Reporting group title
    PNT2258
    Reporting group description
    PNT2258 administered at 120 mg/m2 on days 1-5 of a 21-day cycle for 8 induction cycles followed by continuation phase therapy at a dose of 100 mg/m2 on days 1-4 of a 28-day cycle.

    Primary: Overall Response Rate

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    End point title
    Overall Response Rate [1]
    End point description
    Proportion of subjects with complete response (CR/CMR) or partial response (PR/PMR)
    End point type
    Primary
    End point timeframe
    2 months
    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: Not applicable due to the small number of subjects analyzed.
    End point values
    PNT2258
    Number of subjects analysed
    5
    Units: subjects
    0
    No statistical analyses for this end point

    Secondary: Disease Control Rate

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    End point title
    Disease Control Rate
    End point description
    Proportion of subjects with stable disease or better (CR/CMR, PR/PMR or SD/NMR)
    End point type
    Secondary
    End point timeframe
    2 months
    End point values
    PNT2258
    Number of subjects analysed
    5
    Units: subjects
    0
    No statistical analyses for this end point

    Secondary: Duration of Overall Response

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    End point title
    Duration of Overall Response
    End point description
    End point type
    Secondary
    End point timeframe
    2 months
    End point values
    PNT2258
    Number of subjects analysed
    0 [2]
    Units: months
        median (full range (min-max))
    ( to )
    Notes
    [2] - No data displayed because endpoint has zero total participants analyzed.
    No statistical analyses for this end point

    Secondary: Time to Response

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    End point title
    Time to Response
    End point description
    End point type
    Secondary
    End point timeframe
    2 months
    End point values
    PNT2258
    Number of subjects analysed
    0 [3]
    Units: months
        median (full range (min-max))
    ( to )
    Notes
    [3] - No data displayed because endpoint has zero total participants analyzed.
    No statistical analyses for this end point

    Secondary: Overall Survival

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    End point title
    Overall Survival
    End point description
    End point type
    Secondary
    End point timeframe
    2 months
    End point values
    PNT2258
    Number of subjects analysed
    0 [4]
    Units: months
        median (full range (min-max))
    ( to )
    Notes
    [4] - No data displayed because endpoint has zero total participants analyzed.
    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 PNT2258 until 30 days after the last dose of PNT2258
    Adverse event reporting additional description
    Events assessed as at least possibly related to PNT2258 are considered to be causally related to treatment.
    Assessment type
    Non-systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    18.1
    Reporting groups
    Reporting group title
    Overall trial
    Reporting group description
    -

    Serious adverse events
    Overall trial
    Total subjects affected by serious adverse events
         subjects affected / exposed
    4 / 5 (80.00%)
         number of deaths (all causes)
    2
         number of deaths resulting from adverse events
    Cardiac disorders
    Atrial fibrillation
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Cardiomyopathy
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Nervous system disorders
    Haemorrhage intracranial
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    1 / 1
    General disorders and administration site conditions
    Disease progression
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Pyrexia
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Infections and infestations
    Listeriosis
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Pneumonia
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Metabolism and nutrition disorders
    Hypercalcaemia
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 0%
    Non-serious adverse events
    Overall trial
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    5 / 5 (100.00%)
    Neoplasms benign, malignant and unspecified (incl cysts and polyps)
    Tumour pain
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Vascular disorders
    Embolism
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Hypertension
    alternative assessment type: Systematic
         subjects affected / exposed
    2 / 5 (40.00%)
         occurrences all number
    2
    Hypotension
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    General disorders and administration site conditions
    Chest discomfort
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Chest pain
    alternative assessment type: Systematic
         subjects affected / exposed
    2 / 5 (40.00%)
         occurrences all number
    2
    Chills
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Early satiety
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Fatigue
    alternative assessment type: Systematic
         subjects affected / exposed
    3 / 5 (60.00%)
         occurrences all number
    3
    Oedema peripheral
    alternative assessment type: Systematic
         subjects affected / exposed
    2 / 5 (40.00%)
         occurrences all number
    2
    Pain
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Respiratory, thoracic and mediastinal disorders
    Cough
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Dyspnoea
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Haemoptysis
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Pleural effusion
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Pulmonary hypertension
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Pulmonary oedema
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Psychiatric disorders
    Confusional state
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Insomnia
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Investigations
    Alanine aminotransferase increased
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Aspartate aminotransferase increased
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    2
    Blood alkaline phosphatase increased
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Blood bilirubin increased
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Blood creatinine increased
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Blood phosphorus decreased
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Neutrophil count decreased
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Platelet count decreased
    alternative assessment type: Systematic
         subjects affected / exposed
    2 / 5 (40.00%)
         occurrences all number
    3
    White blood cell count decreased
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Injury, poisoning and procedural complications
    Infusion related reaction
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Nervous system disorders
    Dizziness
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Dysgeusia
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Peripheral sensory neuropathy
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Blood and lymphatic system disorders
    Anaemia
    alternative assessment type: Systematic
         subjects affected / exposed
    2 / 5 (40.00%)
         occurrences all number
    2
    Ear and labyrinth disorders
    Hearing impaired
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Gastrointestinal disorders
    Abdominal pain
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Diarrhoea
    alternative assessment type: Systematic
         subjects affected / exposed
    2 / 5 (40.00%)
         occurrences all number
    2
    Faecal incontinence
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Nausea
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Toothache
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Skin and subcutaneous tissue disorders
    Decubitis ulcer
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Pruritis
    alternative assessment type: Systematic
         subjects affected / exposed
    2 / 5 (40.00%)
         occurrences all number
    2
    Urticaria
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Renal and urinary disorders
    Urinary incontinence
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Musculoskeletal and connective tissue disorders
    Arthralgia
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Joint stiffness
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Muscular weakness
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Infections and infestations
    Cytomegalovirus viraemia
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Urinary tract infection
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    2
    Metabolism and nutrition disorders
    Decreased appetite
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Dehydration
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Fluid overload
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Hyperglycaemia
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    2
    Hypermagnesaemia
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Hypokalaemia
    alternative assessment type: Systematic
         subjects affected / exposed
    2 / 5 (40.00%)
         occurrences all number
    2
    Hypomagnesaemia
    alternative assessment type: Systematic
         subjects affected / exposed
    1 / 5 (20.00%)
         occurrences all number
    1
    Hypophosphataemia
    alternative assessment type: Systematic
         subjects affected / exposed
    2 / 5 (40.00%)
         occurrences all number
    2

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    24 Mar 2016
    This protocol amendment: - allowed for the enrollment of first line Richter’s transformation patients - updated the definition for response evaluable population and per protocol analysis populations - added additional organ function requirements (bone marrow function and coagulation profile) - added exclusion criteria of ongoing risk of bleeding and CNS or leptomeningeal involvement of lymphoma - increased the minimum period to use acceptable methods of contraception after treatment cessation

    Interruptions (globally)

    Were there any global interruptions to the trial? Yes
    Date
    Interruption
    Restart date
    07 Jun 2016
    On the basis of interim data assessments, the study was closed to further enrollment.
    -

    Limitations and caveats

    Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data.
    Early termination of enrollment, and thus very few subjects were analyzed..
    For support, Contact us.
    The status and protocol content of GB trials is no longer updated since 1 January 2021. For the UK, as of 31 January 2021, EU Law applies only to the territory of Northern Ireland (NI) to the extent foreseen in the Protocol on Ireland/NI. Legal notice
    As of 31 January 2023, all EU/EEA initial clinical trial applications must be submitted through CTIS . Updated EudraCT trials information and information on PIP/Art 46 trials conducted exclusively in third countries continues to be submitted through EudraCT and published on this website.

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