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    EudraCT Number:2018-001762-42
    Sponsor's Protocol Code Number:4658-402
    National Competent Authority:Sweden - MPA
    Clinical Trial Type:EEA CTA
    Trial Status:Prematurely Ended
    Date on which this record was first entered in the EudraCT database:2019-09-26
    Trial results
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    A. Protocol Information
    A.1Member State ConcernedSweden - MPA
    A.2EudraCT number2018-001762-42
    A.3Full title of the trial
    A Randomized, Double-Blind, Dose Finding and Comparison Study of the Safety and Efficacy of a High Dose of Eteplirsen, Preceded by an Open-Label Dose Escalation, in Patients with Duchenne Muscular Dystrophy With Deletion Mutations Amenable to Exon 51 Skipping
    A.3.1Title of the trial for lay people, in easily understood, i.e. non-technical, language
    A research study to compare different doses of a new investigational medicinal product for treatment of certain patients with Duchenne muscular dystrophy
    A.4.1Sponsor's protocol code number4658-402
    A.7Trial is part of a Paediatric Investigation Plan No
    A.8EMA Decision number of Paediatric Investigation Plan
    B. Sponsor Information
    B.Sponsor: 1
    B.1.1Name of SponsorSarepta Therapeutics, Inc.
    B.1.3.4CountryUnited States
    B.3.1 and B.3.2Status of the sponsorCommercial
    B.4 Source(s) of Monetary or Material Support for the clinical trial:
    B.4.1Name of organisation providing supportSarepta Therapeutics, Inc.
    B.4.2CountryUnited States
    B.5 Contact point designated by the sponsor for further information on the trial
    B.5.1Name of organisationPPD
    B.5.2Functional name of contact pointLiana Baker
    B.5.3 Address:
    B.5.3.1Street Address929 North Front Street
    B.5.3.2Town/ cityWilmington, NC
    B.5.3.3Post code28401
    B.5.3.4CountryUnited States
    B.5.4Telephone number+1215591 6631
    D. IMP Identification
    D.IMP: 1
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation No
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community Yes
    D.2.5.1Orphan drug designation numberEU/3/08/586
    D.3 Description of the IMP
    D.3.1Product nameEteplirsen
    D.3.2Product code AVI-4658
    D.3.4Pharmaceutical form Concentrate for solution for infusion
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPIntravenous use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNETEPLIRSEN
    D.3.9.1CAS number 1173755-55-9
    D.3.9.2Current sponsor codeAVI-4658
    D.3.9.4EV Substance CodeSUB129287
    D.3.10 Strength
    D.3.10.1Concentration unit mg/ml milligram(s)/millilitre
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number50
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) No
    D. cell therapy medicinal product No
    D. therapy medical product No
    D. Engineered Product No
    D. ATIMP (i.e. one involving a medical device) No
    D. on Advanced therapies (CAT) has issued a classification for this product No
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy No
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product No
    D.3.11.8Extractive medicinal product No
    D.3.11.9Recombinant medicinal product No
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.8 Information on Placebo
    E. General Information on the Trial
    E.1 Medical condition or disease under investigation
    E.1.1Medical condition(s) being investigated
    Duchenne Muscular Dystrophy
    E.1.1.1Medical condition in easily understood language
    Duchenne muscular dystrophy is a rare, fatal degenerative neuromuscular disease with an X-linked recessive inheritance caused by mutations in the dystrophin gene
    E.1.1.2Therapeutic area Diseases [C] - Musculoskeletal Diseases [C05]
    MedDRA Classification
    E.1.2 Medical condition or disease under investigation
    E.1.2Version 20.0
    E.1.2Level PT
    E.1.2Classification code 10013801
    E.1.2Term Duchenne muscular dystrophy
    E.1.2System Organ Class 10010331 - Congenital, familial and genetic disorders
    E.1.3Condition being studied is a rare disease Yes
    E.2 Objective of the trial
    E.2.1Main objective of the trial
    Open-Label Dose Escalation
    Evaluate the safety and tolerability of weekly IV doses of 100 and 200 mg/kg of eteplirsen.

    Double-blind Dose Finding Part:
    Selection of a high dose (100 mg/kg vs 200 mg/kg) as compared with 30 mg/kg administered IV once weekly.
    Evaluate the PK, PD (exon skipping
    quantitation), safety and tolerability of doses higher than 30 mg/kg of eteplirsen, to select a single higher dose of eteplirsen for dose comparison

    Double-Blind Dose Comparison:
    Comparison of a selected high dose of eteplirsen with 30 mg/kg IV weekly.
    To investigate the effect of a selected high dose of eteplirsen (100 mg/kg or 200 mg/kg) as compared with 30 mg/kg, administered weekly IV, on motor function in ambulant Duchenne muscular dystrophy (DMD) patients with confirmed deletion genotypes amenable to exon 51 skipping
    E.2.2Secondary objectives of the trial
    Double-blind Dose Comparison:

    Comparison of a selected high dose of eteplirsen with 30 mg/kg IV weekly on:
    -Ambulatory performance
    -Pulmonary function
    -Dystrophin expression
    To evaluate safety and tolerability of a selected high dose as compared with 30 mg/kg of eteplirsen, administered weekly IV

    E.2.3Trial contains a sub-study No
    E.3Principal inclusion criteria
    A patient must meet all of the following criteria to be eligible to participate in this study.
    1. Be a male with an established clinical diagnosis of DMD and an out-of-frame deletion mutation of the DMD gene amenable to exon 51 skipping (for example, deletions of exons 45-50, 47-50, 48-50, 49-50, 50, 52, and 52-63).
    2. Be aged 7 to 13 years, inclusive
    3. Have achieved a mean 6MWT distance of ≥300 and ≤450 meters (without assistance) at both the Screening and Baseline visits for the double-blind part.
    4. Have intact right and left biceps muscles (the preferred biopsy site) or an alternative upper arm muscle group that will allow for sufficiently sized (1 cm3) muscle biopsies to be obtained prior to and on treatment (for patients in the double-blind part of the study).
    5. Have been on a stable dose or dose equivalent of oral corticosteroids for at least 12 weeks prior to randomization, and the dose is expected to remain constant (except for modifications to accommodate changes in weight and stress-related needs as per recently published guidelines throughout the study).
    6. Have stable pulmonary function (forced vital capacity ≥50% of predicted and no requirement for nocturnal ventilation) that, in the Investigator’s opinion, is unlikely to decompensate significantly over the duration of the study.
    7. If sexually active, agree to use a male condom during such activity for the entire duration of the study and for 90 days after the last dose. The sexual partner must also use a medically acceptable form of contraceptive (ie, female oral contraceptives) during this timeframe. Acceptable methods of contraception include combined (estrogen and progesterone containing) hormonal contraception associated with inhibition of ovulation (oral, intravaginal, or transdermal); progesterone-only hormonal contraception associated with inhibition of ovulation (oral, injectable, or implantable); intrauterine device; intra-uterine hormone-releasing system; bilateral tubal occlusion; vasectomized partner; sexual abstinence; or condom in combination with either cap, diaphragm, or sponge with spermicide (double-barrier contraception).
    8. Have (a) parent(s) or legal guardian(s) who is (are) able to understand and comply with all the study requirements.
    9. Is willing to provide informed assent (if applicable) and has (a) parent(s) or legal guardian(s) who is (are) willing to provide informed consent for the patient to participate in the study.
    E.4Principal exclusion criteria
    A patient who meets any of the following criteria will be excluded from this study:
    1. Use of any pharmacologic treatment (other than corticosteroids) within 12 weeks prior to randomization that may have an effect on muscle strength or function. Growth hormone for short stature and testosterone for delayed puberty are permitted if physician has documented the diagnosis and medical necessity of treatment and if the patient has been on a stable dose for at least 24 weeks prior to randomization.
    2. Current or previous treatment with any other experimental pharmacologic treatment for DMD or any prior exposure to antisense oligonucleotide, gene therapy or gene editing; except the following:
    Ezutromid in the last 1 weeks prior to first dose.
    Drisapersen in the last 36 weeks prior to first dose
    3. Major surgery within 3 months prior to randomization or planned surgery for any time during this study, except for allowed protocol-specified surgery, as applicable.
    4. Presence of any significant neuromuscular or genetic disease other than DMD (eg, dwarfism).
    5. Gamma-glutamyl transpeptidase (GGT) > 3 × the upper limit of normal (ULN) or serum bilirubin > ULN unexplained by Gilbert’s Syndrome.
    6. Any known impairment of renal function (eg, estimated glomerular filtration rate [eGFR] ≤ 60 mL/min as assessed by the Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI] equation), or dipstick protein result +2, or persistent and unexplained dipstick protein result +1
    7. Platelet count < the lower limit of normal (LLN).
    8. Presence of other clinically significant illness including significant cardiac, pulmonary, hepatic, renal, hematologic, immunologic, or behavioral disease or malignancy.
    9. Has evidence of cardiomyopathy, as defined by left ventricular ejection fraction (LVEF) <50% on the screening ECHO or the Fridericia’s correction formula (QTcF) ≥450 milliseconds based on the screening ECGs.
    10. Prior or ongoing medical condition that could, in the Investigator’s opinion, adversely affect the safety of the patient, make it unlikely that the course of treatment would be completed, or impair the assessment of study results.
    11. Known hypersensitivity to eteplirsen or any excipients of eteplirsen.
    12. Is, in the Investigator’s opinion, unable or unwilling to comply with the study procedures.
    E.5 End points
    E.5.1Primary end point(s)
    Open-Label Dose Escalation:
    Incidence of AEs, adverse events of special interest (AESIs) serious adverse events (SAEs), Safety laboratory assessments, ECGs and ECHO

    Double-Blind Dose Finding:
    Dystrophin expression in biopsied muscle tissue
    Plasma PK parameters of 30, 100, and 200 mg/kg of eteplirsen,
    administered IV weekly
    Incidence of AEs, AESIs and SAEs
    Abnormal changes from baseline or worsening of vitals or physical examination findings
    Safety laboratory assessments
    ECGs and ECHO
    Tissue concentration of eteplirsen from biopsied muscle tissue

    Dose Comparison
    Change from baseline at Week 144 in North Star Ambulatory Assessment (NSAA) total score
    E.5.1.1Timepoint(s) of evaluation of this end point
    Open-label Dose Escalation
    week 1- 8 safety and tolerability data will be assessed to determine if the if the dose 100mg/kg and escalation dose 200mg/kg are safe.

    Double-blind Dose Finding
    on baseline all patients undergo muscle biopsy pre-dose
    One additional muscle biopsy at either 12, 24, or 48 weeks
    Interim analyses will be performed on muscle biopsy data at Weeks 12 to assess dystrophin expression for high dose selection; additional interim analyses will be conducted at Week 24 and, if a high dose is not selected, at Week 48
    AE assessment at baseline and continuous throughout the study. ECG
    at screening, week 1, 4, 8, and 12, and every 12 weeks thereafter.
    ECHO at screening, week 48, 96, and 144.

    Dose Comparison
    Change from baseline at Week 144

    E.5.2Secondary end point(s)
    Change from Baseline at Week 144 in
    o 6-minute walk test (6MWT)
    o 10 meter walk/run time
    o Timed 4 step stair ascend test
    o Time to rise from floor
    Annual decline rate in FVC % predicted
    Time to Loss of Ambulation (LOA)
    Change in skeletal muscle dystrophin expression by:
    o Western blot (quantitation)
    o IHC fiber intensity
    o Exon skipping quantitation by PCR
    Incidence of AEs
    Incidence of AESIs
    Incidence of SAEs
    Safety laboratory assessments
    E.5.2.1Timepoint(s) of evaluation of this end point
    Change from baseline at Week 144
    Change from baseline at either Week 12, Week 24, or Week 48
    6MWT, 10 meter walk/run timer and Time to rise from floor will be assesses on screening visit and week 12

    E.6 and E.7 Scope of the trial
    E.6Scope of the trial
    E.6.1Diagnosis No
    E.6.2Prophylaxis No
    E.6.3Therapy No
    E.6.4Safety Yes
    E.6.5Efficacy Yes
    E.6.6Pharmacokinetic Yes
    E.6.7Pharmacodynamic Yes
    E.6.8Bioequivalence No
    E.6.9Dose response Yes
    E.6.10Pharmacogenetic No
    E.6.11Pharmacogenomic No
    E.6.12Pharmacoeconomic No
    E.6.13Others Yes
    E.6.13.1Other scope of the trial description
    The open-label period of the study evaluates the tolerability of the higher dose eteplirsen in DMD patients
    E.7Trial type and phase
    E.7.1Human pharmacology (Phase I) No
    E.7.1.1First administration to humans No
    E.7.1.2Bioequivalence study No
    E.7.1.3Other No
    E. trial type description
    E.7.2Therapeutic exploratory (Phase II) No
    E.7.3Therapeutic confirmatory (Phase III) Yes
    E.7.4Therapeutic use (Phase IV) No
    E.8 Design of the trial
    E.8.1Controlled Yes
    E.8.1.1Randomised Yes
    E.8.1.2Open No
    E.8.1.3Single blind No
    E.8.1.4Double blind Yes
    E.8.1.5Parallel group No
    E.8.1.6Cross over No
    E.8.1.7Other Yes
    E. trial design description
    Open-label Dose Escalation followed by a Double-blind Dose Finding and Dose Comparison part
    E.8.2 Comparator of controlled trial
    E.8.2.1Other medicinal product(s) No
    E.8.2.2Placebo No
    E.8.2.3Other Yes
    E. description
    different dosage of the same product
    E.8.2.4Number of treatment arms in the trial3
    E.8.3 The trial involves single site in the Member State concerned Yes
    E.8.4 The trial involves multiple sites in the Member State concerned No
    E.8.5The trial involves multiple Member States Yes
    E.8.5.1Number of sites anticipated in the EEA16
    E.8.6 Trial involving sites outside the EEA
    E.8.6.1Trial being conducted both within and outside the EEA Yes
    E.8.6.2Trial being conducted completely outside of the EEA No
    E.8.6.3If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned
    Korea, Republic of
    New Zealand
    Russian Federation
    United Kingdom
    United States
    E.8.7Trial has a data monitoring committee Yes
    E.8.8 Definition of the end of the trial and justification where it is not the last visit of the last subject undergoing the trial
    E.8.9 Initial estimate of the duration of the trial
    E.8.9.1In the Member State concerned years2
    E.8.9.1In the Member State concerned months7
    E.8.9.1In the Member State concerned days18
    E.8.9.2In all countries concerned by the trial years2
    E.8.9.2In all countries concerned by the trial months7
    E.8.9.2In all countries concerned by the trial days18
    F. Population of Trial Subjects
    F.1 Age Range
    F.1.1Trial has subjects under 18 Yes
    F.1.1Number of subjects for this age range: 152
    F.1.1.1In Utero No
    F.1.1.2Preterm newborn infants (up to gestational age < 37 weeks) No
    F.1.1.3Newborns (0-27 days) No
    F.1.1.4Infants and toddlers (28 days-23 months) No
    F.1.1.5Children (2-11years) Yes
    F. of subjects for this age range: 135
    F.1.1.6Adolescents (12-17 years) Yes
    F. of subjects for this age range: 17
    F.1.2Adults (18-64 years) No
    F.1.3Elderly (>=65 years) No
    F.2 Gender
    F.2.1Female No
    F.2.2Male Yes
    F.3 Group of trial subjects
    F.3.1Healthy volunteers No
    F.3.2Patients Yes
    F.3.3Specific vulnerable populations Yes
    F.3.3.1Women of childbearing potential not using contraception No
    F.3.3.2Women of child-bearing potential using contraception No
    F.3.3.3Pregnant women No
    F.3.3.4Nursing women No
    F.3.3.5Emergency situation No
    F.3.3.6Subjects incapable of giving consent personally Yes
    F. of subjects incapable of giving consent
    a male 7-13 years old with an established clinical diagnosis of DMD and an out-of-frame deletion mutation of
    the DMD gene amenable to exon 51 skipping
    F.3.3.7Others No
    F.4 Planned number of subjects to be included
    F.4.1In the member state5
    F.4.2 For a multinational trial
    F.4.2.1In the EEA 70
    F.4.2.2In the whole clinical trial 152
    F.5 Plans for treatment or care after the subject has ended the participation in the trial (if it is different from the expected normal treatment of that condition)
    After completion of the trial the patients will get back to their normal treatment of that condition under their physician
    G. Investigator Networks to be involved in the Trial
    N. Review by the Competent Authority or Ethics Committee in the country concerned
    N.Competent Authority Decision Authorised
    N.Date of Competent Authority Decision2020-04-27
    N.Ethics Committee Opinion of the trial applicationFavourable
    N.Ethics Committee Opinion: Reason(s) for unfavourable opinion
    N.Date of Ethics Committee Opinion2020-01-14
    P. End of Trial
    P.End of Trial StatusPrematurely Ended
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