| Antiviral | EC50 ratio | Phenotype | Strain | Source | Marker | Assay | Reference |
|---|---|---|---|---|---|---|---|
| Letermovir | 4.90 | Intermediate level resistance | Clinical Isolate | Details | Relative frequency of cytomegalovirus UL56 gene mutations detected in genotypic letermovir resistance testing. (Nov 2022) |
| Mutant | Resistances |
|---|---|
| R369G |
Letermovir:
|
| R369M |
Letermovir:
|
| R369S |
Letermovir:
|
| R369T |
Letermovir:
|