Sarepta is currently testing SRP-9001 in the placebo-controlled EMBARK study, which aims to enrol 120 boys with DMD aged four to seven and is due to read out in the latter half of 2023.

Last year, the first phase 3 trial of Sage Therapeutics and Biogen's antidepressant hopeful zuranolone hit its efficacy targets, but raised doubts about the durability of the response. Now ...