Letermovir Treatment for Refractory or Resistant Cytomegalovirus Infection

"Patients will receive intravenous or oral letermovir at a dose of 480mg/day.~Patients weighing 40 or more kilograms will receive a second, loading, dose 12 hours after the first dose of letermovir treatment.~For patients receiving concomitant cyclosporine treatment, the letermovir dose will be 240mg/day."