Codex_V5

A928T

Antiviral	EC50 ratio	Phenotype	Source	Assay	Reference
Ganciclovir	>3.00	At least Intermediate level resistance		Details	Genotypic and Phenotypic Study of Antiviral Resistance Mutations in Refractory Cytomegalovirus Infection. (Nov 2022)
Cidofovir	>3.00	At least Intermediate level resistance		Details	Genotypic and Phenotypic Study of Antiviral Resistance Mutations in Refractory Cytomegalovirus Infection. (Nov 2022)
Foscarnet	>3.00	At least Intermediate level resistance		Details	Genotypic and Phenotypic Study of Antiviral Resistance Mutations in Refractory Cytomegalovirus Infection. (Nov 2022)
Cidofovir	1.00	No resistance	Clinical Isolate	Details	A new locus of foscarnet resistance in the cytomegalovirus UL54 DNA polymerase gene among uncharacterized mutations in recent clinical trials. (Feb 2026)
Foscarnet	0.90	No resistance	Clinical Isolate	Details	A new locus of foscarnet resistance in the cytomegalovirus UL54 DNA polymerase gene among uncharacterized mutations in recent clinical trials. (Feb 2026)
Ganciclovir	0.90	No resistance	Clinical Isolate	Details	A new locus of foscarnet resistance in the cytomegalovirus UL54 DNA polymerase gene among uncharacterized mutations in recent clinical trials. (Feb 2026)