2. Left ventricular ejection fraction (LVEF) \>55% in patients \<10 years of age and \>45% in patients ≥10 years of age, as measured (and documented) by echocardiogram within one year prior to enrollment into the study.
Need for mechanical or non-invasive ventilation OR anticipated need for mechanical or non-invasive ventilation within the next year, in the opinion of the Investigator.
Changes in nutritional or herbal supplements or concomitant medications within 1 month prior to Screening visit or plans to modify dose or regimen during the study.
Currently on anticoagulants or antithrombotics.
Received treatment with eteplirsen or ataluren within the past 14 weeks.
Received prior treatment with drisapersen.
Received any investigational drug within the past 3 months or 5 half-lives, whichever is longer.