For kidney transplant recipients, infection with a virus called cytomegalovirus (CMV) may lead to devastating complications. New research suggests that extending the period of preventive treatment after kidney transplantation can reduce the risk of CMV disease, according to an upcoming report in the Journal of the American Society of Nephrology (JASN).
Cytomegalovirus is a common virus that is present in many healthy people, rarely causing any problems. However, in kidney transplant patients and others with reduced immune function, CMV infection can cause serious disease. Cytomegalovirus is one of the most common "opportunistic" infections that occur post-transplant. Although CMV infection can happen anytime, most cases occur soon after the end of preventive treatment. Complications related to CMV not only affect the outcome of kidney transplantation but also increase financial costs.
Fu Luan, MD (University of Michigan, Ann Arbor) and colleagues compared three months versus six months of treatment with an antiviral drug (valganciclovir) used to prevent CMV after kidney transplantation. In a retrospective analysis of 222 kidney transplant patients, those receiving six months of valganciclovir preventive treatment had a lower rate of CMV-related disease, about 12 percent, as compared to 24 percent with the three-month treatment period. With adjustment for other factors, six months of preventive therapy reduced the risk of CMV disease by nearly two thirds.