Important note: Information in this article was accurate in 2000. The state of the art may have changed since the publication date.
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AIDS. 1999 Aug 20;13(12):1497-502. Unique Identifier : AIDSLINE MED/99392742
Casado JL; Arrizabalaga J; Montes M; Marti-Belda P; Tural C; Pinilla J; Gutierrez C; Portu J; Schuurman R; Aguirrebengoa K; Infectious Diseases Unit, Hospital Ramon y Cajal, Madrid, Spain.
Abstract: OBJECTIVE: To assess the incidence and risk factors for cytomegalovirus (CMV) retinitis in HIV-infected patients who initiated protease inhibitor-containing antiretroviral therapy. DESIGN AND SETTING: Prospective, multicentre study. PATIENTS: A cohort of 172 HIV-infected patients with a CD4 cell count below 100x10(6) cells/l at the time of protease inhibitor introduction. MAIN OUTCOME MEASURES: Confirmed CMV retinitis and mortality, according to CD4 cell count, HIV load, and CMV viraemia. RESULTS: The cumulative incidence of CMV retinitis was 5% at 1 year and 6% at 2 years. Only a positive CMV polymerase chain reaction (PCR) test at therapy initiation was significantly associated with the development of disease (relative hazard, 4.41; 95% confidence interval, 2.12-8.93; P<0.00001). The 12-month Kaplan-Meier CMV retinitis event rate was 38% in patients who were CMV PCR-positive compared with 2% in those who were CMV PCR-negative (P<0.001). Mean CMV load was significantly higher in those individuals who went on to develop CMV retinitis (3700 versus 384 copies/ml, P = 0.002). Only 2% of patients remained CMV PCR-positive after 3 months of protease inhibitor therapy, and CMV viraemia was not associated with a worse therapy response or shorter survival. Transient CMV positivity without a higher risk of disease was observed in 7% of patients at the first month on therapy. CONCLUSIONS: Protease inhibitor-containing antiretroviral therapy significantly reduces the incidence of CMV viraemia and disease. Although a positive CMV PCR test identifies those patients on therapy at highest risk of CMV retinitis, it is not associated with an increased risk of death or a worse response to protease inhibitor therapy.
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A0011290
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