Merck Announces Pivotal Phase 3 Study of Letermovir, an Investigational Antiviral Medicine for Prevention of Cytomegalovirus (CMV) Infection in High-Risk Bone Marrow Transplant Patients, Met Primary Endpoint | Merck Newsroom Home

KENILWORTH, N.J.--(BUSINESS WIRE)--Merck & Co., Inc. (NYSE: MRK), known as MSD outside the United States and Canada, today announced that the pivotal Phase 3 clinical study of letermovir, an investigational antiviral medicine, met its primary endpoint. The global, multicenter, randomized, placebo-controlled study evaluated the efficacy and safety of letermovir for the prevention of clinically-significant cytomegalovirus (CMV) infection in adult (18 years and older) CMV-seropositive recipients of an allogeneic hematopoietic stem cell transplant (HSCT). Merck will submit results from the study for presentation at a future scientific conference.



Merck Announces Pivotal Phase 3 Study of Letermovir, an Investigational Antiviral Medicine for Prevention of Cytomegalovirus (CMV) Infection in High-Risk Bone Marrow Transplant Patients, Met Primary Endpoint | Merck Newsroom Home