| Antiviral | EC50 ratio | Phenotype | Strain | Source | Marker | Assay | Reference |
|---|---|---|---|---|---|---|---|
| Natural polymorphism | Details | Contrasting drug resistance phenotypes resulting from cytomegalovirus DNA polymerase mutations at the same exonuclease locus. (Sep 2008) |
| Mutant | Resistances |
|---|---|
| P522A |
Ganciclovir:
|
| P522A |
Cidofovir:
|
| P522A |
Foscarnet:
|
| P522S |
Ganciclovir:
|
| P522S |
Cidofovir:
|
| P522S |
Foscarnet:
|
| P522T |
Ganciclovir:
|
| P522T |
Cidofovir:
|
| P522T |
Foscarnet:
|