Human cytomegalovirus reactivation in cirrhosis patients with acute decompensation

BACKGROUND/AIMS: The role of reactivation of human cytomegalovirus (HCMV) in determining outcomes of cirrhotic patients with acute decompensation (AD) is unknown. We aimed to investigate HCMV incidence and potential correlation with hepatic outcomes in AD patients. METHODS: Two prospective multicentre cohorts with AD patients were investigated. Patients in cohort 1 were recruited from 4 centres, while patients in cohort 2 were randomly selected from a second multicentre cohort. HCMV reactivation was established with quantitative real-time polymerase chain reaction assay in seropositive patients. RESULTS: HCMV reactivation was found in 35 patients from cohort 1 (n=722) and 14 from cohort 2 (n=291), with an incidence of 4.8% in both cohorts. Bacterial infection and liver failure were independently correlated with HCMV reactivation. HCMV reactivation was an independent predictor of 90-day mortality. Among bacterial infection populations in these two cohorts, patients with HCMV reactivation had worse prognosis compared to those without. Incidence of acute-on-chronic liver failure (ACLF) was higher in patients with HCMV reactivation compared to those without and was also independently correlated with development of ACLF. In a total of 49 HCMV reactivation cases, 8 patients were treated with ganciclovir, in whom a significantly lower 90-day mortality compared with those not treated was observed. All 3 patients who underwent liver transplantation with reactivation of HCMV died. CONCLUSION: In AD patients, HCMV reactivation was common, especially in those with bacterial infection or liver failure, and they were more prone to having ACLF and 90‑day mortality. The data propose the need for active surveillance for HCMV infection in AD patients.