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Sertoz R, Tekin D, Erensoy S, Biceroglu S, Kaptan F, Köse S, Ozkan H, Cetin B, Türken M, Gokengin D. Prevalence of Transmitted Drug Resistance among HIV-1 Patients in the Aegean Region: Results from the Western Part of Turkey. Curr HIV Res 2023; 21:109-116. [PMID: 37231747 DOI: 10.2174/1570162x21666230525145529] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 03/23/2023] [Accepted: 03/27/2023] [Indexed: 05/27/2023]
Abstract
OBJECTIVES This study aimed to analyze the antiretroviral drug resistance in antiretroviral treatment-naïve HIV-positive patients in the Aegean Region of Turkey from 2012 to 2019. METHODS The study included 814 plasma samples from treatment-naïve HIV-positive patients. Drug resistance analysis was performed by Sanger sequencing (SS) between 2012-2017 and by next-generation sequencing sequencing (NGS) between 2018-2019. SS was used to analyze resistance mutations in the protease (PR) and reverse transcriptase (RT) gene regions using a ViroSeq HIV-1 Genotyping System. PCR products were analyzed with an ABI3500 GeneticAnalyzer (Applied Biosystems). The sequencing of the HIV genome in the PR, RT, and integrase gene regions was carried out using MiSeq NGS technology. Drug resistance mutations and subtypes were interpreted using the Stanford University HIV-1 drug resistance database. RESULTS Transmitted drug resistance (TDR) mutation was detected in 34/814 (4.1 %) samples. Nonnucleoside reverse transcriptase inhibitor (NNRTI), nucleoside reverse transcriptase inhibitor (NRTI), and protease inhibitor (PI) mutations were identified in 1.4 % (n =12), 2.4 % (n =20), and 0.3 % (n = 3) of samples, respectively. The most common subtypes were B (53.1 %), A (10.9%), CRF29_BF (10.6%), and B + CRF02_AG (8,2%). The most common TDR mutations were E138A (3.4%), T215 revertants (1.7%), M41L (1.5%), and K103N (1.1%). CONCLUSION Transmitted drug resistance rate in the Aegean Region is compatible with national and regional data. Routine surveillance of resistance mutations may guide the safe and correct selection of initial drug combinations for antiretroviral therapy. The identification of HIV-1 subtypes and recombinant forms in Turkey may contribute to international molecular epidemiological data.
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Affiliation(s)
- Ruchan Sertoz
- Department of Medical Microbiology, Ege University Medical School, Izmir, Turkey
| | - Duygu Tekin
- Department of Medical Microbiology, Tepecik Training and Research Hospital, Izmir, Turkey
| | - Selda Erensoy
- Department of Medical Microbiology, Ege University Medical School, Izmir, Turkey
| | - Servet Biceroglu
- Department of Medical Microbiology, Ege University Medical School, Izmir, Turkey
| | - Figen Kaptan
- Department of Clinical Microbiology and Infectious Diseases, Atatürk Training and Research Hospital, Izmir, Turkey
| | - Sukran Köse
- Department of Clinical Microbiology and Infectious Diseases, Tepecik Training and Research Hospital, Izmir, Turkey
| | - Hulya Ozkan
- Department of Clinical Microbiology and Infectious Diseases, Bozyaka Training and Research Hospital, Izmir, Turkey
| | - Banu Cetin
- Department of Clinical Microbiology and Infectious Diseases, Celal Bayar University Medical School, Izmir, Turkey
| | - Melda Türken
- Department of Clinical Microbiology and Infectious Diseases, Tepecik Training and Research Hospital, Izmir, Turkey
| | - Deniz Gokengin
- Department of Clinical Microbiology and Infectious Diseases, Ege University Medical School, Izmir, Turkey
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Franzetti M, De Luca A, Ceccherini-Silberstein F, Spagnuolo V, Nicastri E, Mussini C, Antinori A, Monno L, Vecchiet J, Fanti I, d'Arminio Monforte A, Balotta C. Evolution of HIV-1 transmitted drug resistance in Italy in the 2007-2014 period: A weighted analysis. J Clin Virol 2018; 106:49-52. [PMID: 30075459 DOI: 10.1016/j.jcv.2018.07.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 06/06/2018] [Accepted: 07/25/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND Recent studies suggest that transmitted drug resistance (TDR) may be decreasing in latest years, likely because of the reduced frequency of acquired resistance. However, specific risk factors, geographical areas and special HIV-infected populations may be disproportionally affected by TDR. OBJECTIVES Correlates of TDR and time trends were evaluated from 2007 to 2014. STUDY DESIGN We evaluated the genotypic results of 2155 naïve patients enrolled in the I.Co.N.A cohort at 23 clinical Centers in Italy between 2007 and 2014. A weighted analysis was performed to account for the patients enrolled in the cohort in each clinical Centre at each biennium (total number of patients: 3737). RESULTS Overall prevalence of TDR was 10.7%. Independent predictors of TDR were sexual risk factor (OR 2.315, p = 0.020) and non-Italian geographical origin (OR 1.57, p = 0.038). The weighted prevalence of TDR was 10.5% with a stable proportion over calendar years. Generally, TDR prevalence was numerically higher, although not significantly, in clinical Centers of metropolitan areas with more than 3 millions of residents as compared to others (11.3% vs. 9.2%). The difference in TDR prevalence between these Centers decreased in more recent years. CONCLUSIONS A stable frequency of TDR was observed during the most recent years in Italy, with opposite and converging trends in large metropolitan areas as compared to the rest of the country, suggesting a more homogeneous spread of TDR across the country in latest years. Concerns remain for sexual route of infection and non-Italian origin, reinforcing the need for specific prevention strategies prioritizing specific populations.
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Affiliation(s)
- M Franzetti
- Department of Biomedical and Clinical Sciences 'L. Sacco', University of Milan, Milan, Italy.
| | - A De Luca
- Siena University Hospital, Infectious Diseases Unit, Siena, Italy
| | | | - V Spagnuolo
- San Raffaele Scientific Institute, Infectious Diseases, Milan, Italy
| | - E Nicastri
- National Institute for Infectious Diseases "L. Spallanzani", Rome, Italy
| | - C Mussini
- Clinic of Infectious Disease, University Hospital, Modena, Italy
| | - A Antinori
- National Institute for Infectious Diseases "L. Spallanzani", Rome, Italy
| | - L Monno
- University of Bari, Department of Biomedical Science and Oncology, Bari, Italy
| | - J Vecchiet
- University of Chieti, Infectious Diseases Clinic, Italy
| | - I Fanti
- Catholic University of Sacred Heart, Clinical Infectious Diseases, Rome, Italy
| | - A d'Arminio Monforte
- San Paolo University Hospital Milan, Clinic of Infectious and Tropical Diseases, Milan, Italy
| | - C Balotta
- Department of Biomedical and Clinical Sciences 'L. Sacco', University of Milan, Milan, Italy
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Abstract
BACKGROUND The rate of transmitted drug resistance (TDR) may increase with wider use of antiretroviral therapy and can contribute to therapeutic failure. We analysed time trends in TDR among HIV seroconverters. METHODS Using CASCADE data of individuals with well estimated dates of HIV seroconversion, we examined HIV nucleotide sequences collected prior to antiretroviral therapy use from 1996-2012. All samples were taken within 12 months of testing HIV positive. Using logistic regression, we examined the association between TDR and year of seroconversion, adjusting for confounders. RESULTS Of 4717 individuals seroconverting between 1996 and 2012, median (IQR) age at seroconversion was 33 (27, 39) years. The majority (3839; 92%) were male, mainly exposed through MSM (3767; 80%), and infected with subtype B (3464; 73%). Overall, 515 (11%) individuals had at least one drug resistance-related mutation; 280 individuals with nucleoside reverse transcriptase, 185 with nonnucleoside reverse transcriptase, and 144 with protease inhibitor mutations. Estimated TDR prevalence was 19.4% (8.2, 36.0) in 1996, significantly decreasing to 8.5% (5.9, 11.9) in 2012 [odds ratio (OR; 95% confidence interval (CI)) = 0.92 (0.90, 0.95) per year increase]. Individuals exposed through sex between men and women were significantly less likely to have been infected with a drug-resistant strain [OR (95% CI) = 0.59 (0.41, 0.87) compared with MSM], and there was marginal evidence that sampling during acute infection was associated with higher odds of resistance [OR (95% CI) = 1.20 (0.97, 1.7), P = 0.093] compared with later sampling. CONCLUSION TDR has decreased over calendar time although a significant proportion of new infections still carry resistance-related mutations.
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Tostevin A, White E, Dunn D, Croxford S, Delpech V, Williams I, Asboe D, Pozniak A, Churchill D, Geretti AM, Pillay D, Sabin C, Leigh‐Brown A, Smit E. Recent trends and patterns in HIV-1 transmitted drug resistance in the United Kingdom. HIV Med 2017; 18:204-213. [PMID: 27476929 PMCID: PMC5297994 DOI: 10.1111/hiv.12414] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/06/2016] [Indexed: 11/29/2022]
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.
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Affiliation(s)
- A Tostevin
- MRC Clinical Trials Unit at UCLUniversity College LondonLondonUK
| | - E White
- MRC Clinical Trials Unit at UCLUniversity College LondonLondonUK
| | - D Dunn
- MRC Clinical Trials Unit at UCLUniversity College LondonLondonUK
| | - S Croxford
- Centre for Infectious Disease Surveillance and Control (CIDSC)Public Health EnglandLondonUK
| | - V Delpech
- Centre for Infectious Disease Surveillance and Control (CIDSC)Public Health EnglandLondonUK
| | - I Williams
- Mortimer Market CentreUniversity College London Hospitals NHS TrustLondonUK
| | - D Asboe
- Chelsea & Westminster HospitalLondonUK
| | - A Pozniak
- Chelsea & Westminster HospitalLondonUK
| | - D Churchill
- Brighton and Sussex University Hospitals NHS TrustBrightonUK
| | | | - D Pillay
- Division of Infection and ImmunityUniversity College LondonLondonUK
- Africa Centre for Health and Population StudiesUniversity of KwaZulu‐NatalMtubatubaSouth Africa
| | - C Sabin
- Research Department of Infection and Population HealthUniversity College LondonLondonUK
| | | | - E Smit
- Public Health EnglandBirmingham Heartlands HospitalBirminghamUK
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Vega Y, Delgado E, Fernández-García A, Cuevas MT, Thomson MM, Montero V, Sánchez M, Sánchez AM, Pérez-Álvarez L. Epidemiological Surveillance of HIV-1 Transmitted Drug Resistance in Spain in 2004-2012: Relevance of Transmission Clusters in the Propagation of Resistance Mutations. PLoS One 2015; 10:e0125699. [PMID: 26010948 PMCID: PMC4444345 DOI: 10.1371/journal.pone.0125699] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 03/21/2015] [Indexed: 11/18/2022] Open
Abstract
Our objectives were to carry out an epidemiological surveillance study on transmitted drug resistance (TDR) among individuals newly diagnosed of HIV-1 infection during a nine year period in Spain and to assess the role of transmission clusters (TC) in the propagation of resistant strains. An overall of 1614 newly diagnosed individuals were included in the study from January 2004 through December 2012. Individuals come from two different Spanish regions: Galicia and the Basque Country. Resistance mutations to reverse transcriptase inhibitors (RTI) and protease inhibitors (PI) were analyzed according to mutations included in the surveillance drug-resistance mutations list updated in 2009. TC were defined as those comprising viruses from five or more individuals whose sequences clustered in maximum likelihood phylogenetic trees with a bootstrap value ≥90%. The overall prevalence of TDR to any drug was 9.9%: 4.9% to nucleoside RTIs (NRTIs), 3.6% to non-nucleoside RTIs (NNRTIs), and 2.7% to PIs. A significant decrease of TDR to NRTIs over time was observed [from 10% in 2004 to 2% in 2012 (p=0.01)]. Sixty eight (42.2%) of 161 sequences with TDR were included in 25 TC composed of 5 or more individuals. Of them, 9 clusters harbored TDR associated with high level resistance to antiretroviral drugs. T215D revertant mutation was transmitted in a large cluster comprising 25 individuals. The impact of epidemiological networks on TDR frequency may explain its persistence in newly diagnosed individuals. The knowledge of the populations involved in TC would facilitate the design of prevention programs and public health interventions.
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Affiliation(s)
- Yolanda Vega
- Unidad de Biología y Variabilidad de VIH, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Elena Delgado
- Unidad de Biología y Variabilidad de VIH, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Aurora Fernández-García
- Unidad de Biología y Variabilidad de VIH, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Maria Teresa Cuevas
- Unidad de Biología y Variabilidad de VIH, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
- * E-mail:
| | - Michael M. Thomson
- Unidad de Biología y Variabilidad de VIH, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Vanessa Montero
- Unidad de Biología y Variabilidad de VIH, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Monica Sánchez
- Unidad de Biología y Variabilidad de VIH, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Ana Maria Sánchez
- Unidad de Biología y Variabilidad de VIH, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Lucia Pérez-Álvarez
- Unidad de Biología y Variabilidad de VIH, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
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Bao Y, Tian D, Zheng YY, Xi HL, Liu D, Yu M, Xu XY. Characteristics of HIV-1 natural drug resistance-associated mutations in former paid blood donors in Henan Province, China. PLoS One 2014; 9:e89291. [PMID: 24586665 PMCID: PMC3929713 DOI: 10.1371/journal.pone.0089291] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Accepted: 01/18/2014] [Indexed: 12/29/2022] Open
Abstract
Background Natural drug resistance is a major cause of antiviral treatment failure. The characteristics of HIV-1 natural drug resistance-associated mutations in former paid blood donors in Henan Province remain unclear. Methods One hundred and fifty HIV-1-positive plasma samples were collected. Plasma viral RNA was extracted for pol gene amplification and sequencing. The sequencing results were submitted to the HIV-1 drug resistance database for drug-resistance analysis. Results The rates of natural drug resistance and resistance-associated mutations were 17.7% (19/107) and 40.2% (43/107), respectively. The rates of PI major, PI minor, NRTI, and NNRTI mutations were: 0, 30.8% (33/107), 10.3% (11/107), and 18.7% (20/107), respectively. Nine cases (8.4%) had both NRTI and NNRTI resistance-associated mutations. Seven cases (6.5%) had PI minor, NRTI and NNRTI resistance-associated mutations. NNRTI resistance was the most serious, followed by NRTI resistance and PI resistance. Polymorphism mutation sites with mutation rates in the protease region higher than 60.0% were: L63A/P/S/T 89.7%, V77I 82.2%, I72E/M/K/T/V 80.4%, I93L 75.7%, and E35D 72.9%. Polymorphism mutation sites with mutation rates in the RT region higher than 60.0% were: I135A/L/M/R/T/V 93.5%, T200A/E/I/P/V 89.7%, Q278E/K/N/T 88.8%, S162C/Y 82.2%, and K277R/S 66.4%. The distribution of 107 gene sequences was scattered, with some drug-resistant strains grouped in the same cluster. Conclusion The natural drug resistance mutation rate of HIV-1 in former paid blood donors in Henan Province was 17.7%, with NNRTI resistance the most serious. The distribution of drug-resistant strains was scattered, with some correlations found in certain resistance loci.
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Affiliation(s)
- Yi Bao
- Department of Infectious Diseases, Peking University First Hospital, Beijing, China
| | - Di Tian
- Department of Infectious Diseases, Peking University First Hospital, Beijing, China
| | - Ying-Ying Zheng
- Department of Infectious Diseases, Peking University First Hospital, Beijing, China
| | - Hong-Li Xi
- Department of Infectious Diseases, Peking University First Hospital, Beijing, China
| | - Dan Liu
- Department of Infectious Diseases, Peking University First Hospital, Beijing, China
| | - Min Yu
- Department of Infectious Diseases, Peking University First Hospital, Beijing, China
| | - Xiao-Yuan Xu
- Department of Infectious Diseases, Peking University First Hospital, Beijing, China
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Wildum S, Paulsen D, Thede K, Ruebsamen-Schaeff H, Zimmermann H. In vitro and in vivo activities of AIC292, a novel HIV-1 nonnucleoside reverse transcriptase inhibitor. Antimicrob Agents Chemother 2013; 57:5320-9. [PMID: 23959304 PMCID: PMC3811302 DOI: 10.1128/aac.01377-13] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 08/07/2013] [Indexed: 11/20/2022] Open
Abstract
Nonnucleoside reverse transcriptase inhibitors (NNRTIs) are important and frequently used elements of highly active antiretroviral therapy (HAART) for the treatment of human immunodeficiency virus type 1 (HIV-1) infection. However, the development of drug resistance, as well as the side effects of existing drugs, defines a medical need for novel NNRTIs with excellent tolerability, improved activity against NNRTI-resistant viruses, and a low barrier to resistance. Within the chemical class of diarylpyrazole-[imidazolidinone]-carboxamides, AIC292 was identified as a promising novel HIV-1 NNRTI and has successfully completed single-dose clinical phase I studies. Here, we report on the antiviral activity of AIC292, evaluated in vitro against wild-type and NNRTI-resistant HIV-1 isolates and in vivo using an engineered mouse xenograft model. AIC292 inhibited wild-type HIV-1 laboratory strains at low nanomolar concentrations, was well tolerated in different cell lines, and showed excellent selectivity in a lead profiling screen. In addition, activity of AIC292 could be demonstrated against a broad panel of wild-type HIV-1 group M and group O clinical isolates. AIC292 also retained activity against viruses harboring NNRTI resistance-associated mutations (RAMs), including the most prevalent variants, K103N, Y181C, and G190A. Interestingly, viruses bearing the L100I RAM were hypersusceptible to AIC292. Two-drug combination assays showed no antagonistic interactions between AIC292 and representative marketed HIV drugs with regard to antiviral activity. Furthermore, AIC292 displayed potent antiviral in vivo efficacy in a mouse xenograft model when applied once daily. Taken together, these data show that AIC292 represents a molecule with the antiviral properties of a novel NNRTI for the treatment of HIV-1 infection.
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Grgic I, Lepej SZ, Lunar MM, Poljak M, Vince A, Vrakela IB, Planinic A, Seme K, Begovac J. The prevalence of transmitted drug resistance in newly diagnosed HIV-infected individuals in Croatia: the role of transmission clusters of men who have sex with men carrying the T215S surveillance drug resistance mutation. AIDS Res Hum Retroviruses 2013; 29:329-36. [PMID: 22906365 PMCID: PMC3552172 DOI: 10.1089/aid.2012.0191] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The aim of this study was to determine the prevalence of transmitted drug resistance (TDR) in newly diagnosed and treatment-naive HIV-infected patients from Croatia and evaluate a possible contribution of transmission clusters to the spread of resistant virus. The study enrolled treatment-naive HIV-infected patients that entered clinical care at the Croatian Reference Center for HIV/AIDS between 2006 and 2008. The protease gene and a part of the reverse transcriptase gene of the HIV-1 genome were sequenced by using the Trugene HIV-1 Genotyping System. The prevalence of transmitted drug resistance was analyzed by using the surveillance drug resistance mutations (SDRM) list recommended by the WHO in 2009. We report findings for 118 of 180 eligible patients (65.6% coverage). SDRM were detected in 26 of 118 patients (22.0%) who were infected with subtype B and belonged mostly to the men having sex with men (MSM). The majority of patients with primary resistance carried SDRM associated with resistance to nucleoside analogues reverse transcriptase inhibitors (NRTIs, 23 of 118 patients, 19.5%). The most frequently found NRTI SDRM was T215S (17 of 118 patients, 14.4%). SDRM associated with resistance to nonnucleoside reverse transcriptase inhibitors were detected in three (2.5%) patients and primary resistance to protease inhibitors was not detected. Non-B subtypes were detected in 13/118 patients (11%). A total of 12 transmission pairs and eight distinct transmission clusters were identified with the largest cluster harboring sequences from 19 patients; among them all but two were carrying the T215S mutation. This study showed a high prevalence of TDR in newly diagnosed MSM from Croatia and is an important contribution concerning the relationship between local transmission clusters and the spread of resistant virus.
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Affiliation(s)
- Ivana Grgic
- Department of Flow Cytometry and Molecular Diagnostics, University Hospital for Infectious Diseases “Dr. Fran Mihaljevic,” Zagreb, Croatia
| | - Snjezana Zidovec Lepej
- Department of Flow Cytometry and Molecular Diagnostics, University Hospital for Infectious Diseases “Dr. Fran Mihaljevic,” Zagreb, Croatia
| | - Maja M. Lunar
- Institute of Microbiology and Immunology, University of Ljubljana, Ljubljana, Slovenia
| | - Mario Poljak
- Institute of Microbiology and Immunology, University of Ljubljana, Ljubljana, Slovenia
| | - Adriana Vince
- Department of HIV/AIDS, University Hospital for Infectious Diseases “Dr. Fran Mihaljevic” and University of Zagreb School of Medicine, Zagreb, Croatia
| | - Ivana Baca Vrakela
- Department of Flow Cytometry and Molecular Diagnostics, University Hospital for Infectious Diseases “Dr. Fran Mihaljevic,” Zagreb, Croatia
| | - Ana Planinic
- Department of Flow Cytometry and Molecular Diagnostics, University Hospital for Infectious Diseases “Dr. Fran Mihaljevic,” Zagreb, Croatia
| | - Katja Seme
- Institute of Microbiology and Immunology, University of Ljubljana, Ljubljana, Slovenia
| | - Josip Begovac
- Department of HIV/AIDS, University Hospital for Infectious Diseases “Dr. Fran Mihaljevic” and University of Zagreb School of Medicine, Zagreb, Croatia
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9
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Li H, Geng Q, Guo W, Zhuang D, Li L, Liu Y, Bao Z, Liu S, Li J. Screening for and verification of novel mutations associated with drug resistance in the HIV type 1 subtype B(') in China. PLoS One 2012; 7:e47119. [PMID: 23144802 PMCID: PMC3493567 DOI: 10.1371/journal.pone.0047119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Accepted: 09/10/2012] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Mutations associated with HIV drug resistance have been extensively characterized at the HIV-1 polymerase domain, but more studies have verified that mutations outside of the polymerase domain also results in resistance to antiviral drugs. In this study, mutations were identified in 354 patients experiencing antiretroviral therapy (ART) failure and in 97 naïve-therapy patients. Mutations whose impact on antiviral drugs was unknown were verified by phenotypic testing. METHODS Pol sequences of HIV subtype B(') obtained from patients experiencing ART failure and from naïve-therapy patients were analyzed for mutations distinct between two groups. Mutations that occurred at a significantly higher frequency in the ART failure than the naïve-therapy group were submitted to the Stanford HIV Drug Resistance Database (SHDB) to analyze the correlation between HIV mutations and drug resistance. For mutations whose impact on the antiviral drug response is unknown, the site-directed mutagenesis approach was applied to construct plasmids containing the screened mutations. 50% inhibitory concentration (IC(50)) to AZT, EFV and NVP was measured to determine the response of the genetically constructed viruses to antiviral drugs. RESULTS 7 mutations at 6 positions of the RT region, D123E, V292I, K366R, T369A, T369V, A371V and I375V, occurred more frequently in the ART failure group than the naïve-therapy group. Phenotypic characterization of these HIV mutants revealed that constructed viruses with mutations A371V and T369V exhibited dual resistance to AZT and EFV respectively, whereas the other 5 mutations showed weak resistance. Although the impact of the other six mutations on response to NVP was minimal, mutation T369V could enhance resistance to NVP. CONCLUSIONS This study demonstrated that mutations at the RT C-terminal in subtype B' could result in resistance to RT inhibitors if the mutations occurred alone, but that some mutations could promote susceptibility to antiviral drugs.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Jingyun Li
- Department of AIDS Research, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
- * E-mail:
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10
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Costiniuk CT, La Porte CJ, Angel JB. Surreptitious antiretroviral use as an explanation for apparent elite HIV control. AIDS Patient Care STDS 2012; 26:645-6. [PMID: 23003207 DOI: 10.1089/apc.2012.0190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Cecilia T. Costiniuk
- Division of Infectious Diseases, University of Ottawa and the Ottawa Hospital, Ottawa, Canada
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Canada
| | - Charles J.L. La Porte
- Division of Infectious Diseases, University of Ottawa and the Ottawa Hospital, Ottawa, Canada
- Ottawa Hospital Research Institute, Ottawa, Canada
| | - Jonathan B. Angel
- Division of Infectious Diseases, University of Ottawa and the Ottawa Hospital, Ottawa, Canada
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Canada
- Ottawa Hospital Research Institute, Ottawa, Canada
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11
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Lessells RJ, Katzenstein DK, de Oliveira T. Are subtype differences important in HIV drug resistance? Curr Opin Virol 2012; 2:636-43. [PMID: 23006584 DOI: 10.1016/j.coviro.2012.08.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 08/17/2012] [Accepted: 08/20/2012] [Indexed: 11/26/2022]
Abstract
The diversity of human immunodeficiency virus type 1 (HIV-1) has given rise to multiple subtypes and recombinant strains. The majority of research into antiretroviral agents and drug resistance has been performed on subtype B viruses, yet non-subtype B strains are responsible for 90% of global infections. Although it seems that combination antiretroviral regimens are effective against all HIV-1 subtypes, there is emerging evidence of subtype differences in drug resistance, relevant to antiretroviral strategies in different parts of the world. For this purpose, extensive sampling of HIV genetic diversity, curation and analyses are required to inform antiretroviral strategies in different parts of the world.
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Affiliation(s)
- R J Lessells
- Africa Centre for Health and Population Studies, University of KwaZulu-Natal, Somkhele, South Africa
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Dolling D, Sabin C, Delpech V, Smit E, Pozniak A, Asboe D, Brown AL, Churchill D, Williams I, Geretti AM, Phillips A, Mackie N, Murphy G, Castro H, Pillay D, Cane P, Dunn D, Dolling D. Time trends in drug resistant HIV-1 infections in the United Kingdom up to 2009: multicentre observational study. BMJ 2012; 345:e5253. [PMID: 22915687 PMCID: PMC3424006 DOI: 10.1136/bmj.e5253] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/14/2012] [Indexed: 12/04/2022]
Abstract
OBJECTIVE To evaluate whether the prevalence of HIV-1 transmitted drug resistance has continued to decline in infections probably acquired within the United Kingdom. DESIGN Multicentre observational study. SETTING All UK public laboratories conducting tests for genotypic HIV resistance as a part of routine care. PARTICIPANTS 14,584 patients infected with HIV-1 subtype B virus, who were first tested for resistance before receiving antiretroviral therapy between January 2002 and December 2009. MAIN OUTCOME MEASURE Prevalence of transmitted drug resistance, defined as one or more resistance mutations from the surveillance list recommended by the World Health Organization. RESULTS 1654 (11.3%, 95% confidence interval 10.8% to 11.9%) patients had one or more mutations associated with transmitted HIV-1 drug resistance; prevalence was found to decline from 15.5% in 2002 to 9.6% in 2007, followed by a slight increase to 10.9% in 2009 (P=0.21). This later rise was mainly a result of increases in resistance to nucleos(t)ide reverse transcriptase inhibitors (from 5.4% in 2007 to 6.6% in 2009, P=0.24) and protease inhibitors (1.5% to 2.1%, P=0.12). Thymidine analogue mutations, including T215 revertants, remained the most frequent mutations associated with nucleos(t)ide reverse transcriptase inhibitors, despite a considerable fall in stavudine and zidovudine use between 2002 and 2009 (from 29.4% of drug regimens in 2002 to 0.8% in 2009, from 47.9% to 8.8%, respectively). CONCLUSIONS The previously observed decline in the prevalence of transmitted drug resistance in HIV-1 infections probably acquired in the UK seems to have stabilised. The continued high prevalence of thymidine analogue mutations suggests that the source of this resistance may be increasingly from patients who have not undergone antiretroviral therapy and who harbour resistant viruses. Testing of all newly diagnosed HIV-1 positive people should be continued.
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Lee CK, Lee HK, Loh TP, Sethi SK, Koay ESC, Tang JWT. An in-house HIV genotyping assay for the detection of drug resistance mutations in Southeast Asian patients infected with HIV-1. J Med Virol 2012; 84:394-401. [PMID: 22246824 DOI: 10.1002/jmv.23202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Genotyping for HIV drug resistance is costly and beyond the means for many Southeast Asian patients, who are self-funded. This prompted the development of a more cost-effective, in-house assay for an ethnically diverse, Southeast Asian population at the National University Hospital in Singapore, using Sanger-based sequencing. Plasma samples from 20 treatment-failure patients with a broad spectrum of HIV drug resistance mutations were used to validate this assay clinically. Blinded testing gave concordant results for 7/7 (100%) protease drug resistance-related mutations, including one major and six minor mutations, and 111/116 (95.7%) reverse-transcriptase (RT) drug resistance-related mutations, including 65 nucleoside RT inhibitors (NRTI) and 46 non-nucleoside RT inhibitors (NNRTI) mutations. There were five discordant results, involving three NRTI- and two NNRTI-resistance-associated mutations. Highly conserved primers designed to have a wide coverage of the HIV pol gene (covering the entire protease and 395 codons of the RT region) enabled efficient multi-ethnic population-based genotyping. Reagents for this in-house test cost around 60% less than those for commercially available assays (SGD150 vs. SGD350 per sample). In addition, this assay also identified mutations located within the C-terminal domain (codons 312-560) of RT that are beyond the reach of most published and commercial GRTs. Currently, most research on C-terminal drug-resistance-related mutations has been conducted on HIV subtype B infections. Therefore this assay enables further study of these C-terminal mutations in Southeast Asian populations, where there is a high prevalence of CRF01_AE and other non-subtype B HIV infections.
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Affiliation(s)
- Chun Kiat Lee
- Molecular Diagnosis Centre, Department of Laboratory Medicine, National University Hospital, Singapore, Singapore
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Franzetti M, Lai A, Simonetti FR, Bozzi G, De Luca A, Micheli V, Meraviglia P, Corsi P, Bagnarelli P, Almi P, Zoncada A, Balotta C. High burden of transmitted HIV-1 drug resistance in Italian patients carrying F1 subtype. J Antimicrob Chemother 2012; 67:1250-3. [PMID: 22302564 DOI: 10.1093/jac/dks013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Transmitted drug resistance (TDR) is mainly restricted to individuals carrying B subtype, with low prevalence among non-B subtypes when grouped together. Subtype F1 is the most frequent non-B variant found in subjects living in Italy, allowing a specific assessment of TDR associated with this clade. METHODS We analysed pol sequences of HIV-1-positive individuals carrying the F1 variant included in the Antiretroviral Resistance Cohort Analysis database in the 1998-2009 period. Mutations were analysed with the Surveillance Drug Resistance Mutation and the International AIDS Society lists for naive and treated patients, respectively. RESULTS Among 343 HIV-1-infected patients carrying an F1 subtype, resistance was evaluated in a subset of 221 patients whose treatment status was known (169 drug naive and 52 drug experienced). The prevalence of TDR was 15.4% (11.8% for nucleoside/nucleotide reverse transcriptase inhibitors, 6.5% for non-nucleoside reverse transcriptase inhibitors and 7.1% for protease inhibitors). Among the 169 naive patients, 75.1%, 10.1% and 7.1% were Italians, South Americans and Romanians, respectively. Heterosexuals were prevalent among Italians and Romanians, while men who have sex with men were predominant among South Americans. The overall frequency of TDR declined from 21.4% to 7.1% in the 1998-2009 period. Although no statistical difference was detected, the frequency of TDR was higher in South Americans (23.5%) compared with Italian and Romanian naive patients (15% and 8.3%, respectively). DISCUSSION Our study shows a remarkable frequency of TDR in the F1 subtype-infected population. The high prevalence of TDR detected in South American subjects is linked to the homosexual route of infection. However, TDR was considerably high also in Italian subjects harbouring the F1 subtype, deserving careful monitoring.
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Affiliation(s)
- Marco Franzetti
- Department of Clinical Science L. Sacco, Section of Infectious Diseases and Immunopathology, University of Milan, Milan, Italy.
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Increase of transmitted drug resistance among HIV-infected sub-Saharan Africans residing in Spain in contrast to the native population. PLoS One 2011; 6:e26757. [PMID: 22046345 PMCID: PMC3201965 DOI: 10.1371/journal.pone.0026757] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Accepted: 10/03/2011] [Indexed: 11/19/2022] Open
Abstract
Background The prevalence of transmitted HIV drug resistance (TDR) is stabilizing or decreasing in developed countries. However, this trend is not specifically evaluated among immigrants from regions without well-implemented antiretroviral strategies. Methods TDR trends during 1996–2010 were analyzed among naïve HIV-infected patients in Spain, considering their origin and other factors. TDR mutations were defined according to the World Health Organization list. Results Pol sequence was available for 732 HIV-infected patients: 292 native Spanish, 226 sub-Saharan Africans (SSA), 114 Central-South Americans (CSA) and 100 from other regions. Global TDR prevalence was 9.7% (10.6% for Spanish, 8.4% for SSA and 7.9% for CSA). The highest prevalences were found for protease inhibitors (PI) in Spanish (3.1%), for non-nucleoside reverse transcriptase inhibitors (NNRTI) in SSA (6.5%) and for nucleoside reverse transcriptase inhibitors (NRTI) in both Spanish and SSA (6.5%). The global TDR rate decreased from 11.3% in 2004–2006 to 8.4% in 2007–2010. Characteristics related to a decreasing TDR trend in 2007-10 were Spanish and CSA origin, NRTI- and NNRTI-resistance, HIV-1 subtype B, male sex and infection through injection drug use. TDR remained stable for PI-resistance, in patients infected through sexual intercourse and in those carrying non-B variants. However, TDR increased among SSA and females. K103N was the predominant mutation in all groups and periods. Conclusion TDR prevalence tended to decrease among HIV-infected native Spanish and Central-South Americans, but it increased up to 13% in sub-Saharan immigrants in 2007–2010. These results highlight the importance of a specific TDR surveillance among immigrants to prevent future therapeutic failures, especially when administering NNRTIs.
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Santos AF, Silveira J, Muniz CP, Tornatore M, Góes LR, Mendoza-Sassi RA, Martinez AMB, Tupinambás U, Greco DB, Soares MA. Primary HIV-1 drug resistance in the C-terminal domains of viral reverse transcriptase among drug-naïve patients from Southern Brazil. J Clin Virol 2011; 52:373-6. [PMID: 21975076 DOI: 10.1016/j.jcv.2011.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 08/07/2011] [Accepted: 09/10/2011] [Indexed: 10/17/2022]
Abstract
BACKGROUND Major and accessory drug resistance mutations have been recently characterized in the C-terminal RT subdomains of HIV-1, connection and RNase H. However, their presence in treatment-naïve patients infected with HIV-1 non-B subtypes remains largely unknown. OBJECTIVES To characterize the patterns of primary resistance at the C-terminal RT subdomains of HIV-1 infecting subjects in the southern region of Brazil, where HIV-1 subtypes B and C co-circulate. STUDY DESIGN Plasma viral RNA was extracted from patients recently diagnosed for HIV infection (2005-2008). The protease and reverse transcriptase regions were PCR-amplified and sequenced. Infecting HIV subtypes were assigned by phylogenetic inference and drug resistance mutations were determined following the IAS consensus and recent reports on C-terminal RT mutations. RESULTS The major mutation to NNRTI T369I/V was found in 1.8% of patients, while A376S was present in another 8.3%. In the RNase H domain, the compensatory mutation D488E was more frequently observed in subtype C than in subtype B (p=0.038), while the inverse was observed for mutation Q547K (p<0.001). The calculated codon genetic barrier showed that 22% of subtype B isolates, but no subtype C, carried T360, requiring two transitions to change into the resistance mutation 360V. CONCLUSIONS Major resistance-conferring mutations to NNRTI were detected in 10% of RT connection domain viral sequences from treatment-naïve subjects. We showed for the first time that the presence of specific polymorphisms can constrain the acquisition of definite resistance mutations in the connection and RNase H subdomains of HIV-1 RT.
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Affiliation(s)
- André F Santos
- Departamento de Genética, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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