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  • Title: High-dose Valganciclovir Treatment for Resistant Cytomegalovirus Colitis due to UL97 and UL54 Mutations.
    Author: Baradhi KM, Aure RL, El-Amm JM.
    Journal: Transplant Proc; 2018; 50(1):142-144. PubMed ID: 29407298.
    Abstract:
    We report the first case of a ganciclovir-resistant cytomegalovirus (CMV) involving the gastrointestinal tract that was successfully treated with high-dose valganciclovir. A kidney transplant recipient developed drug-resistant CMV colitis which was initially treated with valganciclovir, but his CMV was found to have major resistance to ganciclovir and cidofovir due to UL97 and UL54 mutations. The patient was switched to intravenous foscarnet 40 mg/kg given every twelve hours. However, foscarnet had to be discontinued after 4 days of treatment due to acute kidney injury. Patient was restarted on valganciclovir at a higher target dose of 1800 mg twice a day based on the creatinine clearance. CMV became undetectable 2 weeks after valganciclovir treatment was completed. High-dose valganciclovir along with immune suppression reduction may be a treatment option for CMV colitis with ganciclovir resistance due to dual UL97 and UL54 gene mutations.
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