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  • Title: The changing pattern of Kaposi sarcoma in patients with HIV, 1994-2003: the EuroSIDA Study.
    Author: Mocroft A, Kirk O, Clumeck N, Gargalianos-Kakolyris P, Trocha H, Chentsova N, Antunes F, Stellbrink HJ, Phillips AN, Lundgren JD.
    Journal: Cancer; 2004 Jun 15; 100(12):2644-54. PubMed ID: 15197808.
    Abstract:
    BACKGROUND: The introduction of highly active antiretroviral therapy (HAART) has radically changed the clinical course of human immunodeficiency virus (HIV) infection. The goals of the current study were to assess the change in the incidence of Kaposi sarcoma (KS) among European patients with HIV since the introduction of HAART and to identify the factors associated with the development of KS among patients receiving HAART. METHODS: The incidence of KS and the factors associated with the development of this malignancy in patients receiving HAART were evaluated using Poisson regression. Patients examined in the current study were among the 9803 individuals with HIV who were enrolled in the EuroSIDA study, a pan-European multicenter investigation. RESULTS: There was an estimated annual reduction of 39% (95% confidence interval [CI], 35-43%; P < 0.0001) in the incidence of KS between 1994 and 2003. The proportion of acquired immunodeficiency syndrome (AIDS) diagnoses made due to KS during prospective follow-up ranged from 4.1% to 7.5%, and there was no significant change over time in this figure (P = 0.97). Four thousand fourteen patients began receiving HAART during prospective follow-up; 41 of these 4014 were subsequently diagnosed with KS (1.0%). After adjustment in multivariate analyses, patients with higher current CD4 counts were found to have a decreased incidence of KS (incidence rate ratio [IRR], 0.60; 95% CI, 0.53-0.68; P < 0.0001), as were those for whom more time had elapsed since the initiation of HAART (IRR, 0.77; 95% CI, 0.60-0.98; P = 0.037). In contrast, homosexual men were found to have a significantly increased incidence of KS (IRR, 2.12; 95% CI, 1.00-4.54; P = 0.050) CONCLUSIONS: The current incidence of KS among patients with HIV is less than 10% of the incidence reported in 1994; the proportion of AIDS diagnoses made on the basis of KS diagnoses remains near 6%. Most individuals who developed KS while receiving HAART began treatment with low CD4 cell counts and developed KS within 6 months of the initiation of HAART. There continues to be an increased incidence of KS among homosexual men and a greatly reduced incidence of KS among patients with higher CD4 counts.
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