| Antiviral | EC50 ratio | Phenotype | Strain | Source | Marker | Assay | Reference |
|---|---|---|---|---|---|---|---|
| Letermovir | 4.90 | Intermediate level resistance | Laboratory strain | Recombinant | Details | Rapid In Vitro Evolution of Human Cytomegalovirus UL56 Mutations That Confer Letermovir Resistance. (Oct 2015) |
| Mutant | Resistances |
|---|---|
| L257F |
Letermovir:
|