Longitudinal use of a line probe assay for human immunodeficiency virus type 1 protease predicts phenotypic resistance and clinical progression in patients failing highly active antiretroviral therapy.

Abstract:

:An observational study assessed the longitudinal use of a new line probe assay for the detection of protease mutations. Probe assays for detection of reverse transcriptase (Inno-LiPA HIV-1 RT; Innogenetics) and protease (prototype kit Inno-LiPA HIV Protease; Innogenetics) mutations gave results for 177 of 199 sequential samples collected over 2 years from 26 patients failing two nucleoside reverse transcriptase inhibitors and one protease inhibitor (first line: indinavir, n = 6; ritonavir, n = 10; and saquinavir, n = 10). Results were compared to recombinant virus protease inhibitor susceptibility data (n = 87) and to clinical and virological data. Combinations of protease mutations (M46I, G48V, I54V, V82A or -F, I84V, and L90M) predicted phenotypic resistance to the protease inhibitor and to nelfinavir. The sum of protease mutations was associated with virological and clinical outcomes from 6 and 3 months on, respectively. Moreover, a poorer clinical outcome was linked to the sum of reverse transcriptase mutations. In conclusion, despite the limited number of patients studied and the restricted number of codons investigated, probe assay-based genotyping correlates with phenotypic drug resistance and predicts new Centers for Disease Control and Prevention stage B and C clinical events and virological outcome. Line probe assays provide additional prognostic information and should be prospectively investigated for their potential for treatment monitoring.

authors

Servais J,Lambert C,Plesséria JM,Fontaine E,Robert I,Arendt V,Staub T,Hemmer R,Schneider F,Schmit JC

doi

10.1128/aac.46.6.1928-1933.2002

subject

Has Abstract

pub_date

2002-06-01 00:00:00

pages

1928-33

issue

6

eissn

0066-4804

issn

1098-6596

journal_volume

46

pub_type

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