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Updated: May 7, 2026

Reverse Genetics to Engineer Positive-Sense RNA Virus Variants
Published on: June 9, 2022
Generation and characterization of a GCV resistant HCMV UL97-mutation and a drug sensitive UL54-mutation
Lena Fischer1, Kerstin Laib Sampaio, Gerhard Jahn
1Institute of Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, 72076 Tübingen, Germany.
Abstract:
In transplant recipients, drug-resistant human cytomegalovirus (HCMV) infections remain a serious problem. Drug-resistance against ganciclovir (GCV), cidofovir (CDV) and foscarnet (PFA) is caused by mutations either in the phosphotransferase-gene (UL97) or in the viral polymerase (UL54). For characterization of newly emerging mutations marker transfer analysis is required. Two new HCMV-mutations, the UL54-mutation L516M and the UL97-mutation A613V, were characterized by this method.

