Format

Send to

Choose Destination
PLoS One. 2012;7(2):e31674. doi: 10.1371/journal.pone.0031674. Epub 2012 Feb 16.

HIV-1 subtype D infections among Caucasians from Northwestern Poland--phylogenetic and clinical analysis.

Author information

1
Department of Infectious Diseases and Hepatology, Pomeranian Medical University, Szczecin, Poland. mparczewski@yahoo.co.uk

Abstract

BACKGROUND:

HIV-1 subtype D infections, which are associated with a faster rate of progression and lymphocyte CD4 decline, cognitive deficit and higher mortality, have rarely been found in native Europeans. In Northwestern Poland, however, infections with this subtype had been identified. This study aimed to analyze the sequence and clinical data for patients with subtype D using molecular phylogeography and identify transmission clusters and ancestry, as well as drug resistance, baseline HIV tropism and antiretroviral treatment efficacy.

METHODS:

Phylogenetic analyses of local HIV-1 subtype D sequences were performed, with time to the most recent common ancestor inferred using bayesian modeling. Sequence and drug resistance data were linked with the clinical and epidemiological information.

RESULTS:

Subtype D was found in 24 non-immigrant Caucasian, heterosexually infected patients (75% of females, median age at diagnosis of 49.5 years; IQR: 29-56 years). Partial pol sequences clustered monophyletically with the clades of Ugandan origin and no evidence of transmission from other European countries was found. Time to the most common recent ancestor was 1989.24 (95% HPD: 1968.83-1994.46). Baseline drug resistance to nucleoside reverse transcriptase inhibitors was observed in 54.5% of cases (mutations: M41L, K103N, T215S/D) with evidence of clustering, no baseline integrase or protease resistance and infrequent non-R5 tropism (13.6%). Virologic failure was observed in 60% of cases and was associated with poor adherence (p<0.001) and subsequent development of drug resistance (p = 0.008, OR: 20 (95%CI: 1.7-290).

CONCLUSIONS:

Local subtype D represented an independently transmitted network with probably single index case, high frequency of primary drug resistance and evidence of transmission clusters.

PMID:
22359615
PMCID:
PMC3280981
DOI:
10.1371/journal.pone.0031674
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Public Library of Science Icon for PubMed Central
Loading ...
Support Center