A Phase 3, Open-Label, Single-Arm Study to Assess the Efficacy, Safety, and Pharmacokinetics of Maribavir for the Treatment of Cytomegalovirus (CMV) Infection in Japanese Recipients of a Hematopoietic Stem Cell Transplant (HSCT) or Solid Organ Transplant (SOT)

The main aim of the study is to check if maribavir can treat Japanese people with Cytomegalovirus (CMV) infection, and to check side effect from the study treatment and how much maribavir participants can take without getting side effects from it.Japanese recipients of a hematopoietic stem cell transplant (HSCT) or solid organ transplant (SOT) will take Maribavir tablets two times a day for 8 weeks in this study.During the study, participants will visit their study clinic 18 times as a maximum.