Comparison of in-house HIV-1 genotypic drug resistant test with commercial HIV-1 genotypic test kit.
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Date
2011-04
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Abstract
Background: The use of combination antiretroviral therapy (cART) has become a standard of care in the treatment of HIV infection. However, antiretroviral drug resistance occurs in a substantial number of patients. In resourcelimited settings, genotypic resistance assay using a commercial kit is costly.
Objective: Focus on the validation of an in-house HIV-1 specific genotypic drug resistance assay in Thai patients failing cART.
Materials and methods: Results of HIV-1 genotypic drug resistance assay was evaluated by comparing an inhouse method to a commercial test. The TRUGENE HIV-1 genotyping kit was used in 79 plasma specimens (49 from HIV patients failing cART therapy and 30 from proficiency testing panels).
Results: The results from the in-house assay were comparable to those obtained from the TRUGENE HIV-1 genotyping kit with >99.0% codon-to-codon agreement. The lower limit of detection by the in-house assay was approximately 100 copies/mL of HIV-1 RNA. In addition, this in-house assay would allow testing of samples from patients infected with HIV-1 subtype other than B.
Conclusion: The in-house HIV-1 genotypic drug resistance assay may be used as an alternative to commercial kits, particularly in resource limited settings.
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Keywords
Antiviral therapy, drug resistance, genotype, HIV-1, in-house assay
Citation
Asian Biomedicine (Research Reviews and News); Vol. 5 No. 2 April 2011; 249-255.