Journal
CLINICAL INFECTIOUS DISEASES
Volume 37, Issue 8, Pages 1112-1118Publisher
OXFORD UNIV PRESS INC
DOI: 10.1086/378301
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- NCRR NIH HHS [M01 RR00052] Funding Source: Medline
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Nonadherence to highly active antiretroviral therapy (HAART) is a major cause of human immunodeficiency virus (HIV) drug resistance; however the level of nonadherence associated with the greatest risk of resistance is unknown. Beginning in February 2000, 195 patients at the Johns Hopkins Outpatient Center (Baltimore, MD) who were receiving HAART and who had HIV loads of <500 copies/mL were recruited into a cohort study and observed for 1 year. At each visit, adherence to HAART was assessed and plasma samples were obtained and stored for resistance testing, if indicated. The overall incidence of viral rebound with clinically significant resistance was 14.5 cases per 100 person-years. By multivariate Cox proportional hazards regression, a cumulative adherence of 70%-89%, a CD4 cell nadir of <200 cells/mL, and the missing of a scheduled clinic visit in the past month were independently associated with an increased hazard of viral rebound with clinically significant resistance. Clinicians and patients must set high adherence goals to avoid the development of resistance.
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