Recent trends and patterns in HIV-1 transmitted drug resistance in the United Kingdom

HIV Med. 2017 Mar;18(3):204-213. doi: 10.1111/hiv.12414. Epub 2016 Aug 1.

Abstract

Objectives: Transmission of drug-resistant HIV-1 has decreased in the UK since the early 2000s. This analysis reports recent trends and characteristics of transmitted drug resistance (TDR) in the UK from 2010 to 2013.

Methods: Resistance tests conducted in antiretroviral treatment (ART)-naïve individuals between 2010 and 2013 were analysed for the presence of transmitted drug resistance mutations (TDRMs), defined as any mutations from a modified 2009 World Health Organization surveillance list, or a modified 2013 International Antiviral Society-USA list for integrase tests. Logistic regression was used to examine associations between demographics and the prevalence of TDRMs.

Results: TDRMs were observed in 1223 (7.5%) of 16 425 individuals; prevalence declined from 8.1% in 2010 to 6.6% in 2013 (P = 0.02). The prevalence of TDRMs was higher among men who have sex with men (MSM) compared with heterosexual men and women (8.7% versus 6.4%, respectively) with a trend for decreasing TDRMs among MSM (P = 0.008) driven by a reduction in nucleoside reverse transcriptase inhibitor (NRTI)-related mutations. The most frequently detected TDRMs were K103N (2.2%), T215 revertants (1.6%), M41L (0.9%) and L90M (0.7%). Predicted phenotypic resistance to first-line ART was highest to the nonnucleoside reverse transcriptase inhibitors (NNRTIs) rilpivirine and efavirenz (6.2% and 3.4%, respectively) but minimal to NRTIs, including tenofovir, and protease inhibitors (PIs). No major integrase TDRMs were detected among 101 individuals tested while ART-naïve.

Conclusions: We observed a decrease in TDRMs in recent years. However, this was confined to the MSM population and rates remained stable in those with heterosexually acquired HIV infection. Resistance to currently recommended first-line ART, including integrase inhibitors, remained reassuringly low.

Keywords: HIV-1; drug resistance; mutations; transmitted; transmitted drug resistance; transmitted drug resistance mutations.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Anti-Retroviral Agents / pharmacology*
  • Cohort Studies
  • Disease Transmission, Infectious*
  • Drug Resistance, Viral*
  • Female
  • HIV Infections / transmission*
  • HIV Infections / virology*
  • HIV-1 / drug effects*
  • HIV-1 / isolation & purification
  • Humans
  • Male
  • Middle Aged
  • Prevalence
  • United Kingdom / epidemiology
  • Young Adult

Substances

  • Anti-Retroviral Agents