Eteplirsen 's proposed mechanism of action is to bind to pre-mRNA needed to make a particular muscle protein , dystrophin , and rearrange the splicing of the RNA .
More dystrophin is made .
Eteplirsen 's proposed mechanism of action is to bind to pre-mRNA needed to make a particular muscle protein , dystrophin , and rearrange the splicing of the RNA so that more dystrophin is made .