The recommended daily amount of potassium is 3,400 milligrams for men and 2,600 milligrams for women. To put that in perspective, one medium banana provides 420 milligrams of potassium.

Shares in Sarepta – one of Solid Bio’s closest rivals in the race to bring a DMD gene therapy through development with its SRP-9001 candidate – were up nearly 6% in the wake of the announcement.