Abstract
To investigate the efficacy and safety of valganciclovir in treatment of cytomegalovirus viremia in patients following allogeneic hematopoietic stem cell transplantation (allo-HSCT). Nineteen patients following allo-HSCT were diagnosed as with cytomegalovirus viremia with the CMV-DNA load of higher than 6.0 x 10(2) copies/ml confirmed by polymerase chain reaction (PCR) took orally valganciclovir at the dose of 900 mg bid for 14 days followed by 900 mg Qd for another 14 days. Since 4 weeks after the valganciclovir treatment PCR was conducted in the 6th, 8th, 12th, 16th, and 24th weeks later to detect the CMV-DNA level. CMV viremia was confirmed 40 days after HSCT on average with a median CMV-DNA load of 3.346 x 10(3) copies/ml. The total effective rate of valganciclovir was 94.7% (18/19). The CMV-DNA turned to negative in 7 d in 11 cases with a negative transfer rate of 54.7%, and in 14 d in 16 cases with a negative transfer rate of 84.2%. The median CMV DNA load reduction was 0.75 copies/ml and 0.084 log10 copies/ml/day. Severe adverse effects were not observed and CMV-related disease did not occur. Valganciclovir is an attractive and safe alternative for preemptive CMV viremia treatment in allo-HSCT recipients.
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