A Study of LIVTENCITY (Maribavir) in Adults With Cytomegalovirus (CMV) Infection After Transplantation in South Korea

Number of participants with AEs, causality to AEs, SAEs and AESI will be reported. The investigator will assess the causal relationship (causality) between the medicinal product and the AE using his/her clinical expertise and judgment.

Unexpected AE is defined as AE that differs from the information in the product label in nature, severity, specificity, or outcome.

An ADR refers to a harmful and unintended reaction that occurs when an investigational product is normally administered or used, and when the causal relationship between the reaction and the investigational product cannot be ruled out. Among voluntarily reported AEs, if the causality between the AE and the investigational product is not known, it is considered an ADR. However, if both the reporter and the manufacturer/sponsor determine that the case is unrelated to the investigational product, it is excluded from being classified as an ADR. Serious ADR means noxious or unintended response to a drug that occurs at any dosage and that requires in-patient hospitalization or prolongation of existing hospitalization, causes congenital malformation, results in persistent or significant disability or incapacity, is life-threatening or results in death. Unexpected ADRs is defined as ADR that differs from the information in the product label in nature, severity, specificity, or outcome.

SSR include following events: Pregnancy: any case in which a pregnancy participant is exposed to a Takeda Product or in which a female participant or partner of a male participant becomes pregnant following Takeda product.; Breastfeeding: infant exposure from breast milk; Overdose: all information of any accidental or intentional overdose; Drug abuse, misuse or medication error: all information on medicinal product (MP) abuse, misuse of medication error (potential or actual); Suspected transmission of infectious agent: Suspected (in sense of confirmed or potential) transmission of infectious agent by a MP; Lack of efficacy of Takeda Product; accidental/occupational exposure; Use outside the terms of the marketing authorization, also known as "off-label" and "off-label use" for unintended benefit; Use of falsified and counterfeit MP; Drug-drug and drug-food interactions; Inadvertent or accidental exposure with or without an AE; AEs occurring in the pediatric or elderly population.

CMV viremia clearance will be defined as CMV deoxyribonucleic acid (DNA) concentration below the lower limit of quantification (<LLOQ) or predefined threshold of each device. The assessment will be done using PCR.

CMV infection symptom control will be defined as resolution or improvement of tissue invasive CMV disease or CMV syndrome for participants symptomatic at baseline or no symptoms of tissue invasive CMV disease or CMV syndrome for subjects asymptomatic at baseline.