The overall goal of this study is to determine the clinical benefit and safety of antiviral therapy for asymptomatic congenital cytomegalovirus (cCMV) infected hearing-impaired infants. We will conduct a multi-center double-blind randomized placebo-controlled trial to determine whether hearing-impaired infants with asymptomatic cCMV have better hearing and language outcomes if they receive valganciclovir antiviral treatment. We will also determine the safety of antiviral valganciclovir therapy for asymptomatic cCMV-infected hearing impaired infants. This study will be unique in that the cohort enrolled will only include hearing-impaired infants with asymptomatic cCMV. Aim 1: Test the hypothesis that asymptomatic CMV-infected hearing impaired infants treated with antiviral valganciclovir will have better hearing and language outcomes compared with untreated CMV-infected hearing impaired infants. Aim 2: Evaluate the safety of antiviral valganciclovir therapy for asymptomatic CMV-infected hearing impaired infants. Aim 3: Evaluate the pharmacokinetics (pK) of valganciclovir using pharmacometrics modeling to develop a population pK model.
Randomized Controlled Trial of Valganciclovir for Asymptomatic Cytomegalovirus Infected Hearing Impaired Infants: ValEAR Trial
Cytomegalovirus (CMV) can be transmitted from the mother to the fetus and is a leading cause of sensorineural hearing loss (SNHL), which is a condition where the inner ear is unable to convert sound into nerve impulses to the brain. This hearing loss and its detrimental effect on language development contribute nearly $4 billion annually to the health care costs in the U.S. Unlike other types of SNHL, CMV induced hearing loss can be treated. Several clinical trials have demonstrated that antiviral therapy may prevent progressive hearing loss if administered early in life for severely affected (symptomatic CMV) infants. These promising findings have given rise to a debate regarding the best method for identifying and treating the more numerous asymptomatic CMV-infected infants.
One approach is to conduct universal newborn hearing screens, and then do CMV diagnostic testing only on the infants who fail the hearing screen. This targeted approach should identify those infants at greatest risk of developing progressive hearing loss and consequent communicative difficulties. Utah is the first state to mandate this approach whereby infants under three weeks of age who fail their newborn hearing screening undergo CMV testing. In this trial, the hearing screen targeted approach will be used to identify patients eligible for participation in a double blind placebo controlled randomized clinical trial of antiviral valganciclovir therapy. The results of this trial will inform public policy, potentially shift our current clinical practice regarding pediatric hearing loss evaluation, and potentially offer a therapeutic option to asymptomatic CMV-infected infants with SNHL.
Cmv Congenital CMV Congenital Cmv SNHL Sensorineural Hearing Loss valganciclovir Ganciclovir
Open to people ages up to 5 months
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