ObjectiveThe aim of the study was to evaluate time to virological suppression in a cohort of individuals who started highly active antiretroviral therapy (HAART), and to explore the factors associated with suppression. MethodsEligible participants were HIV-positive individuals from a multi-site Canadian cohort of antiretroviral-naïve patients initiating HAART on or after 1 January 2000. Viral load and CD4 measurements within 6 months prior to HAART initiation were assessed. Univariate and multivariate analyses were conducted using piecewise survival exponential models where time scale was divided into intervals (o10 months; 10 months). Virological suppression was defined as the time to the first of at least two consecutive viral load measurements o50 HIV-1 RNA copies/mL. ResultsA total of 3555 individuals were included in the study, of median age 40 years [interquartile range (IQR) 34-47 years]. Eighty per cent were male, 18% had a history of injecting drug use (IDU), and 13% presented with an AIDS-defining illness at baseline. The median time to suppression was 4.55 months . In multivariate analyses, older age, male sex, treatment in Ontario rather than British Columbia, non-IDU history, and having an AIDS diagnosis at baseline predicted increased likelihood of suppression. Patients with low baseline viral load were more likely to have suppression [4-5 log 10 copies/mL, hazard ratio (HR) 1.27, 95% confidence interval (CI) 1.18-1.38; o4 log 10 copies/mL, HR 1.49, 95% CI 1.32-1.68] than patients with baseline viral load 5 log 10 copies/mL; however, this effect ceased after 18 months of follow-up. Suppression was more likely with nonnucleoside reverse transcriptase inhibitors and ritonavir-boosted HAART. ConclusionIdentification of patients at risk for diminished likelihood of virological suppression will allow focusing of efforts and the utilization of resources to maximize the benefits of HAART.Keywords: Canada, CANOC, highly active antiretroviral therapy, HIV, virological suppression Accepted 17 August 2010Correspondence: Dr Curtis Cooper, The Ottawa Hospital Division of Infectious Diseases, University of Ottawa, G12 501 Smyth Rd, Ottawa, ON K1H 8L6, Canada. Tel: 613 737 8924; fax: 613 737 8164; e-mail: ccooper@Ottawahospital.on.ca DOI: 10.1111/j.1468-1293.00890.x HIV Medicine (2011 r 2010 British HIV Association 352 IntroductionIt is well documented that highly active antiretroviral therapy (HAART) decreases morbidity and mortality amongst HIV-positive individuals [1][2][3][4]. In particular, one of the primary goals of HAART is the obtainment and maintenance of complete HIV RNA suppression [5]. Failure to achieve and maintain suppression can result in the development of drug resistance and also increases the risk of both horizontal and vertical viral transmission [6][7][8].When first initiating antiretroviral therapy, the obtainment of viral load suppression is an important objective that is associated with a variety of socio-demographic and baseline clinical factors [9,10]. Additionally, choice of initial...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.