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How does expert advice impact genotypic resistance testing in clinical practice?
Sheila M Badri1, Oluwatoyin M Adeyemi, Blake E Max
1Division of Infectious Diseases, John H. Stroger, Jr. Hospital of Cook County, Chicago, IL 60612, USA. smbadri@yahoo.com
Summary
Expert interpretation of genotypic resistance tests (GRT) significantly improved virological outcomes for patients with failing highly active antiretroviral therapy (HAART). This study highlights the value of expert GRT analysis in routine HIV-1 clinical practice.
Area of Science:
- Infectious Diseases
- Virology
- Clinical Medicine
Background:
- Highly active antiretroviral therapy (HAART) is crucial for managing human immunodeficiency virus type 1 (HIV-1) infection.
- Genotypic resistance testing (GRT) provides valuable information for optimizing HAART regimens.
- Previous studies, like the Havana trial, showed benefits of expert GRT interpretation in a prospective setting.
Purpose of the Study:
- To evaluate the impact of expert GRT interpretation on virological outcomes in routine clinical practice.
- To compare outcomes between patients whose clinicians accepted or rejected expert recommendations for HAART regimens.
- To assess the effectiveness of expert assistance in managing failing HAART.
Main Methods:
- Retrospective evaluation of 74 HIV-1 infected patients with failing HAART.
- Analysis of virological outcomes based on whether clinicians accepted or rejected expert panel recommendations for GRT-guided HAART regimens.
- Comparison of plasma HIV-1 RNA viral load changes and proportions of patients achieving viral suppression (<50 copies/mL) at 24 weeks between groups.
Main Results:
- Patients who accepted expert recommendations (AA group) showed a significantly greater median decrease in viral load (2.6 log(10) copies/mL) compared to those who rejected recommendations (AR group, 1.3 log(10) copies/mL) (P=.0001).
- A higher proportion of patients in the AA group achieved viral suppression (<50 copies/mL) at 24 weeks (52%) compared to the AR group (21%) (P=.01).
- Acceptance of expert GRT interpretation was associated with improved virological outcomes.
Conclusions:
- Expert assistance in interpreting genotypic resistance test results should be considered in routine clinical practice for HIV-1 management.
- Integrating expert GRT interpretation can lead to better virological outcomes in patients with failing HAART.
- This retrospective study supports the clinical utility of expert-guided GRT analysis.