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Duchenne Muscular DystrophyPhase 3NCT01557400

Study of Ataluren for Previously Treated Participants With Nonsense Mutation Duchenne/Becker Muscular Dystrophy (nmDBMD) in Europe, Israel, Australia, and Canada

A Phase 3 study testing Ataluren in people with Duchenne Muscular Dystrophy and Becker Muscular Dystrophy, run by PTC Therapeutics at 21 sites in 10 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

Duchenne/Becker muscular dystrophy (DBMD) is a genetic disorder that develops in boys. It is caused by a mutation in the gene for dystrophin, a protein that is important for maintaining normal muscle structure and function. Read more about this study

Who is it for?
Any age, men only
What is being tested?
Ataluren
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
94 participants
Where
21 sitesin 10 countries
Study dates
20 May 2012to 19 Jan 2018
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Any age
  • Men only
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Evidence of signed and dated informed consent/assent document(s) indicating that the participant (and/or his parent/legal guardian) has been informed of all pertinent aspects of the trial. Note: If the study candidate is considered a child under local regulation, a parent or legal guardian must provide written consent prior to initiation of study screening procedures and the study candidate may be required to provide written assent. The rules of the responsible Institutional Review Board/Independent Ethics Committee (IRB/IEC) regarding whether 1 or both parents must provide consent and the appropriate ages for obtaining consent and assent from the participant should be followed.
  • History of exposure to ataluren in a prior PTC study in nmDBMD. Note: Participants are considered eligible only if they received ataluren during their participation in 1 or more prior PTC-sponsored studies of ataluren in nmDBMD. Note: Participants who have participated in a prior or ongoing PTC study with ataluren in nmDBMD at a trial site in the US or Canada, but reside outside of the US and Canada, may be eligible for this study (with the approval of the PTC Therapeutics Medical Monitor).
  • Male sex.
  • In participants who are sexually active, willingness to abstain from sexual intercourse or employ a barrier or medical method of contraception during ataluren administration and the 6-week follow-up period.
  • Willingness and ability to comply with scheduled visits, drug administration plan, study procedures, laboratory tests, and study restrictions. Note: Psychological, social, familial, or geographical factors that might preclude adequate study participation should be considered.

Who cannot join

  • Exposure to another investigational drug within 1 month prior to start of study treatment.
  • Eligibility for another ataluren clinical trial that is actively enrolling study participants.
  • Known hypersensitivity to any of the ingredients or excipients of ataluren (Litesse® UltraTM [refined polydextrose], polyethylene glycol 3350, Lutrol® micro F127 [poloxamer 407], mannitol 25C, crospovidone XL10, hydroxyethyl cellulose, vanilla, Cab-O-Sil® M5P [colloidal silica], magnesium stearate).
  • Ongoing use of the following medications:
  • Coumarin-based anticoagulants (for example, warfarin), phenytoin, tolbutamide, or paclitaxel.
  • Systemic aminoglycoside therapy
  • Ongoing uncontrolled medical/surgical condition, electrocardiogram (ECG) findings, or laboratory abnormality that, in the Investigator's opinion, could adversely affect the safety of the participant or make it unlikely that follow-up would be completed.

Trial locations and contacts

21 sites in 10 countries.

21 sites in 10 countries

Canada3 sites
  • Alberta Children's Hospital

    Calgary, Alberta

  • Children's Hospital of Western Ontario

    London, Ontario

  • British Columbia Children's Hospital

    Vancouver, British Columbia

Other trials in Canada

France3 sites
  • Hôpital d'Enfants CHU Timone

    Marseille

  • Laboratoire d'Exploration Fonctionnelles

    Nantes

  • Groupe Hospitalier La Pitie-Salpetriere

    Paris

Other trials in France

Italy3 sites
  • Ospedale Maggiore Policlinico in Milan

    Milan

  • Ospedale Pediatrico Bambino Gesu

    Rome

  • U.O. Complessa di Neuropsichiatria Infantile

    Rome

Other trials in Italy

Australia2 sites
  • Royal Children's Hospital

    Parkville, Melbourne

  • Institute For Neuromuscular Research, The Children's Hospital at Westmead

    Westmead

Other trials in Australia

Germany2 sites
  • University of Essen - Clinic for Children

    Essen

  • University Hospital

    Freiburg im Breisgau

Other trials in Germany

Spain2 sites
  • Hospital Sant Joan de déu

    Barcelona

  • Hospital Universitari La Fe

    Valencia

Other trials in Spain

Sweden2 sites
  • Queen Silvia Children's Hospital

    Gothenburg

  • Astrid Lindgren Pediatric Hospital

    Stockholm

Other trials in Sweden

United Kingdom2 sites
  • Great Ormond Street Hospital

    London

  • University of Newcastle Institute of Human Genetics

    Newcastle upon Tyne

Other trials in United Kingdom

Belgium1 site
  • University Hospital KU Leuven

    Leuven

Other trials in Belgium

Israel1 site
  • Hadassah Medical Center, Hebrew University Hospital

    Jerusalem

Other trials in Israel

About this study

Official title: An Open-Label Study for Previously Treated Ataluren (PTC124®) Patients With Nonsense Mutation Dystrophinopathy

Duchenne/Becker muscular dystrophy (DBMD) is a genetic disorder that develops in boys. It is caused by a mutation in the gene for dystrophin, a protein that is important for maintaining normal muscle structure and function. Loss of dystrophin causes muscle fragility that leads to weakness and loss of walking ability during childhood and teenage years. A specific type of mutation, called a nonsense (premature stop codon) mutation, is the cause of DBMD in approximately 10-15% of boys with the disease. Ataluren is an orally delivered, investigational drug that has the potential to overcome the effects of the nonsense mutation. This study comprises a Phase 3, open-label study of ataluren in participants with nmDBMD who previously received ataluren at an Investigator site in a prior PTC-sponsored clinical study. A separate open-label study (PTC124-GD-016-DMD; NCT01247207) is being conducted for nmDBMD participants who previously received ataluren at an Investigator site in the United States (US).

Read the detailed description

All participating sites must have had at least 1 participant that received ataluren treatment in prior PTC-sponsored clinical studies in DBMD (Phase 2b double-blind, placebo-controlled study [PTC124-GD-007-DMD; NCT00592553] and the subsequent open-label extension study [Study PTC124-GD-007e-DMD; NCT00847379]). It is planned that up to ~96 participants will be enrolled.

It is also planned that participants will receive ataluren 3 times per day (TID) at respective morning, midday, and evening doses of 10 milligrams/kilograms (mg/kg), 10 mg/kg, and 20 mg/kg for approximately 336 weeks. Study assessments will be performed at clinic visits during screening, on the first day of ataluren dosing, and then every 48 weeks during the ataluren treatment period, except for weight, which will be measured every 24 weeks at a primary care physician (PCP).

Being tested
Ataluren
Keywords
Duchenne muscular dystrophy, Becker muscular dystrophy, Nonsense mutation, Premature stop codon, DMD, BMD, nmDBMD, DBMD, Ataluren, PTC124
Medical subject headings
Muscular Dystrophy, Duchenne

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AtalurenDrug

    Also called PTC124®

    Oral powder for suspension

Study groups in NCT01557400
Study groupRoleWhat they receive
AtalurenExperimentalAtaluren will be provided as a vanilla-flavored powder to be mixed with water, milk, fruit juice (except apple juice) fruit punch, or in semi-solid food (for example, yogurt, pudding, or applesauce). The dose level for ataluren will be 10 milligrams/kilograms (mg/kg) in the morning, 10 mg/kg at midday, and 20 mg/kg in the evening. Administration within 30 minutes after a meal will be recommended. Study drug dosing will be based on milligrams of drug per kilogram of body weight. Because of potential changes in participant body weight over time, weight-based dose adjustment can occur every 24 weeks as required. Study drug will be taken for up to 240 weeks.
Receives: Drug: Ataluren

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants With Treatment Emergent Adverse Events (TEAEs)

    A TEAE is any untoward medical occurrence or undesirable event(s) experienced in a participant that begins or worsens following administration of the study drug or study treatment, whether or not considered related to the treatment by the Investigator. A serious adverse event (SAE) was an adverse event (AE) resulting in any of the following outcomes or deemed significant for any other reason, death, initial or prolonged inpatient hospitalization, life-threatening experience (immediate risk of dying), or persistent or significant disability/incapacity not related to nmDBMD. AEs included both SAEs and non-serious AEs. AEs were classified according to National Cancer Institute Common Terminology Criteria for Adverse Events version 3.0 (CTCAE) and coded using the Medical Dictionary for Regulatory Activities (MedDRA). A summary of serious and all other non-serious adverse events, regardless of causality, is located in the Reported Adverse Events module.

    Measured: Baseline up to Week 246

Secondary outcomes (6)
  1. Change From Baseline in 6MWD as Measured by the 6MWT

    The 6MWD was assessed in participants who were ambulatory using standardized procedures. Participants were not permitted to use assistive devices (walker, long leg braces, or short leg braces) during the 6MWD test.

    Measured: Baseline, Weeks 48, 96, 144, 192, and 240

  2. Change From Baseline in Physical Function as Measured by the NSAA

    The NSAA was used to evaluate physical function in participants who were ambulatory at study entry, using standardized procedures. The NSAA consisted of 17 activities, each scored as 0 (activity could not be performed), 1 (modified method but achieved goal without physical assistance from another), or 2 (normal, achieved goal without assistance). The sum of these 17 scores was used to form a total score. If fewer than 13 of the 17 activities were performed, the total score was considered missing. If 13 to 16 activities were performed, the total score was calculated by multiplying the sum of the scores in the x activities that were performed by 17/x. If an activity could not be performed due to disease progression/loss of ambulation, a score of 0 was assigned. The linear score was the linear transformation of the NSAA score to a scale of 0 (worst) to 100 (best).

    Measured: Baseline, Weeks 48, 96, 144, 192, and 240

  3. Change From Baseline in Time to Stand From Supine Position

    Time to stand from the supine position to a standing position was assessed in ambulatory participants. If the time taken to perform a test exceeded 30 seconds or if a participant could not perform the test due to disease progression, a value of 30 seconds was used.

    Measured: Baseline, Weeks 48, 96, 144, 192, and 240

  4. Change From Baseline in Time to Walk/Run 10 Meters

    Time to walk/run 10 meters was measured in ambulatory participants. If the time taken to perform a test exceeded 30 seconds or if a participant could not perform the test due to disease progression, a value of 30 seconds was used.

    Measured: Baseline, Weeks 48, 96, 144, 192, and 240

  5. Change From Baseline in Pulmonary Function as Measured by Spirometry

    Pulmonary function parameters of %-predicated FVC, percent-predicted FEV1 (adjusted using ulna length and age), PEF, and PCF was assessed in non-ambulatory participants by using a spirometer. Due to the difficulty in obtaining an accurate standing height measurement in non-ambulatory participants, ulna length and arm span were used as a surrogate measure for height when calculating percent-predicted FVC.

    Measured: Baseline, Weeks 48, 96, 144, 192, and 240

  6. Change From Baseline in Participant and Parent/Caregiver-Reported ADL, as Measured by the EK Scale

    Activities of daily living after loss of ambulation were measured using the EK scale. The EK scale is an ordinal scale ranging from 0 to 30 points where 0 represents the highest level of independent function and 30 the lowest. The scale consists of 10 categories (each scored 0 to 3), involving different functional domains including 1) ability to use wheelchair, 2) ability to transfer from wheelchair, 3) ability to stand, 4) ability to balance in the wheelchair, 5) ability to move arms, 6) ability to use hands and arms when eating, 7) ability to turn in bed, 8) ability to cough, 9) ability to speak, and 10) physical well-being. The administration of the EK scale consisted of an interview of the participant to capture how he performs the tasks of daily life (as described by Categories 1 to 9) and how he perceives his wellbeing (as described by Category 10). The interviewer observed the participant and assigned the final score for the tasks that could be observed in the clinic.

    Measured: Baseline, Weeks 48, 96, 144, 192, and 240

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted19 Mar 2012 (estimated)
  2. Study start20 May 2012
  3. Primary completion19 Jan 2018
  4. Study completion19 Jan 2018

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
94 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01557400
Sponsor's protocol ID
PTC124-GD-019-DMD
Status last verified
Nov 2020
First submitted
15 Mar 2012
Last updated
25 Nov 2020
Data monitoring committee
No
Individual data sharing
No

Publications

  • Welch EM, Barton ER, Zhuo J, Tomizawa Y, Friesen WJ, Trifillis P, Paushkin S, Patel M, Trotta CR, Hwang S, Wilde RG, Karp G, Takasugi J, Chen G, Jones S, Ren H, Moon YC, Corson D, Turpoff AA, Campbell JA, Conn MM, Khan A, Almstead NG, Hedrick J, Mollin A, Risher N, Weetall M, Yeh S, Branstrom AA, Colacino JM, Babiak J, Ju WD, Hirawat S, Northcutt VJ, Miller LL, Spatrick P, He F, Kawana M, Feng H, Jacobson A, Peltz SW, Sweeney HL. PTC124 targets genetic disorders caused by nonsense mutations. Nature. 2007 May 3;447(7140):87-91. doi: 10.1038/nature05756. Epub 2007 Apr 22.

    PubMed 17450125
  • Hirawat S, Welch EM, Elfring GL, Northcutt VJ, Paushkin S, Hwang S, Leonard EM, Almstead NG, Ju W, Peltz SW, Miller LL. Safety, tolerability, and pharmacokinetics of PTC124, a nonaminoglycoside nonsense mutation suppressor, following single- and multiple-dose administration to healthy male and female adult volunteers. J Clin Pharmacol. 2007 Apr;47(4):430-44. doi: 10.1177/0091270006297140.

    PubMed 17389552
  • McDonald CM, Muntoni F, Penematsa V, Jiang J, Kristensen A, Bibbiani F, Goodwin E, Gordish-Dressman H, Morgenroth L, Werner C, Li J, Able R, Trifillis P, Tulinius M; Study 019 investigators. Ataluren delays loss of ambulation and respiratory decline in nonsense mutation Duchenne muscular dystrophy patients. J Comp Eff Res. 2022 Feb;11(3):139-155. doi: 10.2217/cer-2021-0196. Epub 2021 Nov 18.

    PubMed 34791888

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Ataluren in people with Duchenne Muscular Dystrophy and Becker Muscular Dystrophy, run by PTC Therapeutics at 21 sites in 10 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 25 Nov 2020. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 21 sites in Canada, France, Italy, Australia, Germany and 5 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 25 Nov 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants With Treatment Emergent Adverse Events (TEAEs) (time frame: Baseline up to Week 246). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01557400, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Nov 2020.

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