Characterization of integrase region polymorphisms in HIV type 1 CRF06_cpx viruses in treatment-naive patients in Estonia.

Abstract:

:Natural polymorphisms of HIV-1, often associated with drug resistance, are widely described in protease and reverse transcriptase regions but data on their presence in the integrase region, especially in non-B subtypes, are still very limited. We aimed to characterize naturally occurring polymorphisms in the integrase region in 104 treatment-naive and 10 treatment-experienced patients infected predominantly with HIV-1 CRF06_cpx and its recombinant with subtype A1 and/or CRF03_AB viruses. No primary drug resistance mutations against integrase inhibitors were found, but resistance-associated polymorphisms such as V72I, L74I, V201I, and T206S were seen in more than 90% of viruses. Substitutions E157Q and E157K, associated with raltegravir resistance, were found in only two CRF06_cpx strains. We conclude that similar to other HIV-1 non-B subtypes, the CRF06_cpx and its recombinants with subtype A1 and CRF03_AB are rich in integrase region natural polymorphisms, which may impact the development of resistance against integrase inhibitors.

authors

Avi R,Huik K,Sadam M,Karki T,Krispin T,Ainsalu K,Paap P,Schmidt J,Nikitina N,Lutsar I

doi

10.1089/aid.2010.0097

subject

Has Abstract

pub_date

2010-10-01 00:00:00

pages

1109-13

issue

10

eissn

0889-2229

issn

1931-8405

journal_volume

26

pub_type

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