MT1621 Disease area studied Abbreviated title Phase Study ID Registry database Study results Plain language summary Publication (if available) Thymidine Kinase 2 (TK2) deficiency An Open-Label Study of Continuation Treatment With Combination Pyrimidine Nucleosides in Patients With TK2 Deficiency Phase 2 MT-1621-102 Ongoing NCT038457122018-004277-27