At the 24th Annual Congress of the World Muscle Society (WMS) held in October 2019 in Copenhagen, Denmark, Zogenix presented positive results from its pivotal phase 2 retrospective clinical trial (RETRO) testing the safety and efficacy of pyrimidine nucleoside substrate enhancement therapy (SET) MT1621 for treating thymidine kinase 2 (TK2) deficiency. The experimental therapy was developed . . .