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Ann Intern Med. 2010 Jun 15;152(12):761-9. doi: 10.7326/0003-4819-152-12-201006150-00003.

Extended valganciclovir prophylaxis to prevent cytomegalovirus after lung transplantation: a randomized, controlled trial.

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1
Duke University Medical Center and Duke Clinical Research Institute, Durham, NC, USA.

Abstract

BACKGROUND:

Cytomegalovirus (CMV) is the most prevalent opportunistic infection after lung transplantation. Current strategies do not prevent CMV in most at-risk patients.

OBJECTIVE:

To determine whether extending prophylaxis with oral valganciclovir from the standard 3 months to 12 months after lung transplantation is efficacious.

DESIGN:

Randomized, clinical trial. Patients were randomly assigned by a central automated system to treatment or placebo. Patients and investigators were blinded to treatment status. (ClinicalTrials.gov registration number: NCT00227370)

SETTING:

Multicenter trial involving 11 U.S. lung transplant centers.

PATIENTS:

136 lung transplant recipients who completed 3 months of valganciclovir prophylaxis.

INTERVENTION:

9 additional months of oral valganciclovir (n = 70) or placebo (n = 66).

MEASUREMENTS:

The primary end point was freedom from CMV disease (syndrome or tissue-invasive) on an intention-to-treat basis 300 days after randomization. Secondary end points were CMV disease severity, CMV infection, acute rejection, opportunistic infections, ganciclovir resistance, and safety.

RESULTS:

CMV disease occurred in 32% of the short-course group versus 4% of the extended-course group (P < 0.001). Significant reductions were observed with CMV infection (64% vs. 10%; P < 0.001) and disease severity (110 000 vs. 3200 copies/mL, P = 0.009) with extended treatment. Rates of acute rejection, opportunistic infections, adverse events, CMV UL97 ganciclovir-resistance mutations, and laboratory abnormalities were similar between groups. During the 6 months after study completion, a low incidence of CMV disease was observed in both groups.

LIMITATION:

Longer-term effects of extended prophylaxis were not assessed.

CONCLUSION:

In adult lung transplant recipients who have received 3 months of valganciclovir, extending prophylaxis by an additional 9 months significantly reduces CMV infection, disease, and disease severity without increased ganciclovir resistance or toxicity. A beneficial effect with regard to prevention of CMV disease seems to extend at least through 18 months after transplantation.

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