Takeda Pharmaceutical Co. Ltd.'s oral antiviral, maribavir, failed to meet the primary endpoint of noninferiority compared to Roche Holding AG’s valganciclovir in the phase III Aurora study for cytomegalovirus (CMV) infection in hematopoietic stem cell transplant recipients. The multicenter, randomized, double-blind, double-dummy, active-controlled study was to form the basis for a future label expansion for the therapy.