Fomivirsen (ISIS-2922 free base) is an antisense 21 mer phosphorothioate oligonucleotide. Fomivirsen is an antiviral agent that is used cytomegalovirus retinitis (CMV) research, incluiding in AIDs. Fomivirsen binds to and degrades the mRNAs encoding CMV immediate-early 2 protein, thus inhibiting virus proliferation[1][2].
[1]. M D de Smet, et al. Fomivirsen- a phosphorothioate oligonucleotide for the treatment of CMV retinitis. Ocul Immunol Inflamm. 1999 Dec;7(3-4):189-98.
[2]. Anna Kilanowska, et al. In vivo and in vitro studies of antisense oligonucleotides - a review. (Review Article) RSC Adv., 2020, 10, 34501-34516.
















