Doxecitine and doxribtimine (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 TK0102 Ongoing NCT038457122018-004277-272023-510427-29-00