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The increasing genetic diversity of HIV-1 in the UK, 2002–2010

OBJECTIVE: HIV-1 is typically categorized by genetically distinct viral subtypes. Viral subtypes are usually compartmentalized by ethnicity and transmission group and, thus, convey important epidemiological information, as well as possibly influencing the rate of disease progression. We aim to descr...

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Formato: Online Artículo Texto
Lenguaje:English
Publicado: Lippincott Williams & Wilkins 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3940288/
https://www.ncbi.nlm.nih.gov/pubmed/24257094
http://dx.doi.org/10.1097/QAD.0000000000000119
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collection PubMed
description OBJECTIVE: HIV-1 is typically categorized by genetically distinct viral subtypes. Viral subtypes are usually compartmentalized by ethnicity and transmission group and, thus, convey important epidemiological information, as well as possibly influencing the rate of disease progression. We aim to describe the prevalence and time trends of subtypes observed among key populations living with HIV-1 in the UK. DESIGN: Analyses of reverse transcriptase and protease sequences generated from HIV-1-positive antiretroviral-naive patients as part of routine resistance testing between 2002 and 2010 in all public health and NHS laboratories in the UK. METHODS: Subtype was assigned centrally using the SCUEAL algorithm. Subtyping results were combined with data from the UK Collaborative HIV Cohort Study and the UK HIV and AIDS Reporting System. Analyses adjusted for the number of national HIV-1 diagnoses made each year within demographic subgroups. Viral subtypes were described overall, over time and by demographic subgroup. RESULTS: Subtype B diagnoses (39.9%) have remained stable since 2005, whereas subtype C diagnoses (34.3%) were found to decline in prevalence from 2004. Across most demographic subgroups, the prevalence of non-B non-C subtypes has increased over time, in particular novel recombinant forms (9.9%), subtype G (2.7%), and CRF01 AE (2.0%). CONCLUSION: HIV-1 subtypes are increasingly represented across all demographic subgroups and this could be evidence of sexual mixing. Between 2002 and 2010, the prevalence of novel recombinant forms has increased in all demographic subgroups. This increasing genetic diversity and the effect of subtype on disease progression may impact future HIV-1 treatment and prevention.
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spelling pubmed-39402882014-03-04 The increasing genetic diversity of HIV-1 in the UK, 2002–2010 AIDS Epidemiology and Social OBJECTIVE: HIV-1 is typically categorized by genetically distinct viral subtypes. Viral subtypes are usually compartmentalized by ethnicity and transmission group and, thus, convey important epidemiological information, as well as possibly influencing the rate of disease progression. We aim to describe the prevalence and time trends of subtypes observed among key populations living with HIV-1 in the UK. DESIGN: Analyses of reverse transcriptase and protease sequences generated from HIV-1-positive antiretroviral-naive patients as part of routine resistance testing between 2002 and 2010 in all public health and NHS laboratories in the UK. METHODS: Subtype was assigned centrally using the SCUEAL algorithm. Subtyping results were combined with data from the UK Collaborative HIV Cohort Study and the UK HIV and AIDS Reporting System. Analyses adjusted for the number of national HIV-1 diagnoses made each year within demographic subgroups. Viral subtypes were described overall, over time and by demographic subgroup. RESULTS: Subtype B diagnoses (39.9%) have remained stable since 2005, whereas subtype C diagnoses (34.3%) were found to decline in prevalence from 2004. Across most demographic subgroups, the prevalence of non-B non-C subtypes has increased over time, in particular novel recombinant forms (9.9%), subtype G (2.7%), and CRF01 AE (2.0%). CONCLUSION: HIV-1 subtypes are increasingly represented across all demographic subgroups and this could be evidence of sexual mixing. Between 2002 and 2010, the prevalence of novel recombinant forms has increased in all demographic subgroups. This increasing genetic diversity and the effect of subtype on disease progression may impact future HIV-1 treatment and prevention. Lippincott Williams & Wilkins 2014-03-13 2014-02-26 /pmc/articles/PMC3940288/ /pubmed/24257094 http://dx.doi.org/10.1097/QAD.0000000000000119 Text en © 2014 Wolters Kluwer Health | Lippincott Williams & Wilkins http://creativecommons.org/licenses/by-nc-nd/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivitives 3.0 License, where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially.
spellingShingle Epidemiology and Social
The increasing genetic diversity of HIV-1 in the UK, 2002–2010
title The increasing genetic diversity of HIV-1 in the UK, 2002–2010
title_full The increasing genetic diversity of HIV-1 in the UK, 2002–2010
title_fullStr The increasing genetic diversity of HIV-1 in the UK, 2002–2010
title_full_unstemmed The increasing genetic diversity of HIV-1 in the UK, 2002–2010
title_short The increasing genetic diversity of HIV-1 in the UK, 2002–2010
title_sort increasing genetic diversity of hiv-1 in the uk, 2002–2010
topic Epidemiology and Social
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3940288/
https://www.ncbi.nlm.nih.gov/pubmed/24257094
http://dx.doi.org/10.1097/QAD.0000000000000119