| Antiviral | EC50 ratio | Phenotype | Strain | Source | Marker | Assay | Reference |
|---|---|---|---|---|---|---|---|
| Letermovir | 1.90 | No resistance | Laboratory strain | Recombinant | Details | New Locus of Drug Resistance in the Human Cytomegalovirus UL56 Gene Revealed by In Vitro Exposure to Letermovir and Ganciclovir. (Sep 2018) |