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High Levels of Drug-Resistant Human Immunodeficiency Virus Variants in Patients Exhibiting Increasing CD4⁺ T Cell Counts despite Virologic Failure of Protease Inhibitor: Containing Antiretroviral Combination Therapy

Laurent Bélec, Christophe Piketty, Ali Si-Mohamed, Christophe Goujon, Marie-Charlotte Hallouin, Sylvie Cotigny, Laurence Weiss and Michel D. Kazatchkine
The Journal of Infectious Diseases
Vol. 181, No. 5 (May, 2000), pp. 1808-1812
Published by: Oxford University Press
Stable URL: http://www.jstor.org/stable/30110241
Page Count: 5
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High Levels of Drug-Resistant Human Immunodeficiency Virus Variants in Patients Exhibiting Increasing CD4⁺ T Cell Counts despite Virologic Failure of Protease Inhibitor: Containing Antiretroviral Combination Therapy
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Abstract

The genotypic mutations associated with indinavir resistance were analyzed in 27 patients who exhibited sustained CD4⁺ T cell responses to highly active antiretroviral therapy (HAART), despite virologic failure of treatment. After 12 months of HAART, 1 or 2 primary resistance mutations had occurred in 18 (66%) of the patients, and secondary mutations had accumulated in 22 (88%) of the patients. The number and patterns of mutations in the patients who exhibited discrepant responses to HAART did not differ from those observed in patients who exhibited immunologic and virologic failure to therapy. Results indicate that many patients have prolonged immunologic benefits, despite the development of virologic failure and protease inhibitor mutations. The clinical course of this group of patients calls into question the relevance of genotypic resistance and plasma human immunodeficiency virus RNA level as surrogate markers in patients receiving HAART.

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