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  • Title: Cytomegalovirus viremia in Thai HIV-infected patients on antiretroviral therapy: prevalence and associated mortality.
    Author: Durier N, Ananworanich J, Apornpong T, Ubolyam S, Kerr SJ, Mahanontharit A, Ferradini L, Ruxrungtham K, Avihingsanon A.
    Journal: Clin Infect Dis; 2013 Jul; 57(1):147-55. PubMed ID: 23511301.
    Abstract:
    BACKGROUND: Prevalence and risk factors of cytomegalovirus (CMV) viremia in patients infected with human immunodeficiency virus (HIV) starting antiretroviral therapy (ART) in developing countries are understudied. METHODS: We measured CMV DNA in stored plasma specimens of 293 Thai HIV patients starting ART at CD4 counts <200 cells/mm(3). We examined Cox proportional hazard ratios (HRs) of 24 months mortality and new AIDS-defining illness (ADI). RESULTS: Of 293 patients, 159 (54.3%) were male. The median age was 33 years. The median baseline CD4 count was 82 cells/mm(3), and the median HIV-1 RNA was 4.9 log10 copies/mL. In total, 273 (93.2%) patients started potent combination ART, and 20 (6.8%) started dual nucleoside reverse transcriptase inhibitor (NRTI) therapy. CMV DNA was detected in 77 of 293 patients (26.3%) at baseline, and 9 of 199 patients with available specimen (4.5%) after 6 months of ART. The median CMV DNA was 548 copies/mL (interquartile range [IQR], 129-3849) at baseline and 114 copies/mL (IQR, 75-1099) at 6 months. In univariate analysis, death was associated with baseline CDC stage C, hemoglobin <10 g/dL, lower CD4 count, and CMV viremia. In multivariate analysis, only CMV DNA >500 copies/mL was significantly associated with mortality (HR: 7.28; 95% CI, 1.32-40.29, P = .023). CD4 count was the only variable associated with new ADI (HR: 0.70 per 50 CD4 cells increase; 95% CI, .49-.997, P = .048). CONCLUSIONS: In these Thai patients with advanced HIV disease, CMV viremia was frequent, and CMV DNA >500 copies/mL predicted increased mortality despite ART initiation. This calls for increased attention to screening of active CMV infection in advanced HIV patients in developing countries. Trials assessing preemptive anti-CMV therapy may be warranted.
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