title: Virologic characterization of multidrug-resistant cytomegalovirus infection in 2 transplant recipients treated with maribavir.
abstract: The experimental cytomegalovirus UL97 kinase inhibitor maribavir was used to treat 2 cases of infection in which viral mutations that conferred ganciclovir and foscarnet resistance had evolved sequentially. In one case, viral shedding was cleared without evidence of maribavir resistance in an isolate obtained after therapy. In the other case, a high-grade viremia was initially reduced 50-fold but rebounded 2 months later, coincident with the emergence of viral UL97 mutations T409M and H411Y, which confer maribavir resistance. The relatively rapid onset of maribavir resistance probably resulted from incomplete viral suppression in an immunosuppressed host with a high viral load.
authors.affiliation: Oregon Health and Science University, Portland, Oregon, USA.
authors.forename: Lynne
authors.initials: L
authors.lastname: Strasfeld
authors.forename: Ingi
authors.initials: I
authors.lastname: Lee
authors.forename: Walter
authors.initials: W
authors.lastname: Tatarowicz
authors.forename: Stephen
authors.initials: S
authors.lastname: Villano
authors.forename: Sunwen
authors.initials: S
authors.lastname: Chou
mesh_terms: D000328:Adult; D000368:Aged; D000998:Antiviral Agents / Q000627:therapeutic use; D001562:Benzimidazoles / Q000627:therapeutic use*; D003587:Cytomegalovirus / Q000187:drug effects / Q000235:genetics; D003586:Cytomegalovirus Infections / Q000635:transmission* / Q000821:virology*; D005260:Female; D016027:Heart Transplantation / Q000009:adverse effects*; D006801:Humans; D016040:Lung Transplantation / Q000009:adverse effects*; D008297:Male; D009154:Mutation; D012263:Ribonucleosides / Q000627:therapeutic use*; D019562:Viral Load; D014766:Viremia; D004004:Dichlororibofuranosylbenzimidazole / Q000031:analogs & derivatives
chemical_list: D000998:Antiviral Agents; D001562:Benzimidazoles; D012263:Ribonucleosides; C400401:maribavir; D004004:Dichlororibofuranosylbenzimidazole