Venn diagram showing the most common mutations conferring resistance to CMV antivirals. Drugs for treatment of CMV are labeled in each oval, with the abbreviations listed in parentheses. The proteins (bold and underlined) and specific amino acid mutations commonly found to confer drug resistance are shown below the drug names. Mutations associated with resistance to more than 1 drug are shown in the overlap between multiple ovals. Figure adapted from Chou.⁶³