Long‐Cycle Structured Intermittent versus Continuous Highly Active Antiretroviral Therapy for the Treatment of Chronic Infection with Human Immunodeficiency Virus: Effects on Drug Toxicity and on Immunologic and Virologic Parameters

Mark Dybul, Elizabeth Nies‐Kraske, Marybeth Daucher, Kurt Hertogs, Claire W. Hallahan, György Csákó, Christian Yoder, Linda A. Ehler, Peter Sklar, Michael Belson,

The Journal of Infectious Diseases · 2003 · 83 citations · 40 references

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Abstract

We evaluated the effect of long-cycle structured intermittent therapy (SIT; 4 weeks without highly active antiretroviral therapy [HAART] followed by 8 weeks with HAART) versus continuous HAART. The study was prematurely terminated to new enrollment because of the emergence of genetic mutations associated with resistance to antiretroviral drugs in 5 patients. After 48 weeks, there was no significant difference between groups in lipid, hepatic transaminase, and C-reactive protein levels in 41 patients. Although there were no differences in CD4(+) or CD8(+) T cell counts or the percentage of cells that were CD4(+)CD25(+), CD8(+)CD25(+), or CD4(+)DR(+), patients who received SIT had a significantly higher percentage of CD8(+)CD38(+) and CD8(+)DR(+) cells. There was no clear autoimmunization effect by immunologic or virologic parameters. There was no benefit to long-cycle SIT versus continuous HAART with regard to certain toxicity, immunologic, or virologic parameters.

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