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Wohl DA, Spinner CD, Flamm J, Hare CB, Doblecki-Lewis S, Ruane PJ, Molina JM, Mills A, Brinson C, Ramgopal M, Clarke A, Crofoot G, Martorell C, Carter C, Cox S, Hojilla JC, Shao Y, Das M, Kintu A, Baeten JM, Grant RM, Mounzer K, Mayer K. HIV-1 infection kinetics, drug resistance, and long-term safety of pre-exposure prophylaxis with emtricitabine plus tenofovir alafenamide (DISCOVER): week 144 open-label extension of a randomised, controlled, phase 3 trial. Lancet HIV 2024:S2352-3018(24)00130-9. [PMID: 39008999 DOI: 10.1016/s2352-3018(24)00130-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 05/14/2024] [Accepted: 05/16/2024] [Indexed: 07/17/2024]
Abstract
BACKGROUND Data characterising the long-term use and safety of emtricitabine plus tenofovir disoproxil fumarate as daily oral pre-exposure prophylaxis (PrEP) are scarce and there are uncertainties regarding the value of routine HIV-1 RNA testing during oral PrEP follow-up. METHODS The DISCOVER trial was a randomised, controlled, phase 3 trial in which cisgender men and transgender women aged 18 years and older with a high likelihood of acquiring HIV were recruited from 94 clinics in Europe and North America and randomly assigned to receive either emtricitabine plus tenofovir disoproxil fumarate (200/25 mg) tablets daily, with matched placebo tablets, or emtricitabine plus tenofovir alafenamide (200/300 mg) tablets daily, with matched placebo tablets, for at least 96 weeks. After completion of the trial, participants were offered enrolment in this 48-week open-label extension study of emtricitabine plus tenofovir alafenamide. In participants diagnosed with HIV during the randomised and open-label phases of the study, we characterised HIV-1 test results and measured HIV-1 RNA viral load retrospectively when available. Adherence based on tenofovir diphosphate concentrations in dried blood spots and genotypic resistance were assessed in participants diagnosed with HIV. Safety assessments included adverse events, laboratory parameters, and, in a subset of participants, bone mineral density. HIV-1 incidence in participants initially randomly assigned to receive emtricitabine plus tenofovir alafenamide was estimated using a Poisson distribution. Changes from baseline in safety endpoints were described in participants assigned to received emtricitabine plus tenofovir alafenamide and in those who switched from emtricitabine plus tenofovir disoproxil fumarate during the open-label phase. This trial is registered with ClinicalTrials.gov, NCT02842086, and is ongoing. FINDINGS Between Sept 13, 2016, and June 30, 2017, 5399 participants were enrolled and randomly assigned in DISCOVER. 2699 were assigned to receive emtricitabine plus tenofovir disoproxil fumarate and 2700 were assigned to receive emtricitabine plus tenofovir alafenamide, of whom 2693 and 2694, respectively, received at least one dose of study drug. 2115 (79%) assigned to emtricitabine plus tenofovir disoproxil fumarate switched to emtricitabine plus tenofovir alafenamide in the open-label phase, and 2070 (77%) continued with emtricitabine plus tenofovir alafenamide in the open-label phase. As of data cutoff (Dec 10, 2020), after 15 817 person-years of follow-up, 27 new HIV-1 diagnoses were observed across the total study period, with three occurring during the open-label phase. In participants who were initially assigned to emtricitabine plus tenofovir alafenamide, the incidence was 0·13 per 100 person-years (95% CI 0·061-0·23; ten of 2670). Stored plasma samples were available for 23 of 27 participants, including 22 with incident infection. In four (17%) of 23 participants, retrospective testing detected HIV-1 RNA before serological HIV-1 test positivity; one was a suspected baseline infection. Of the three incident cases, all three were non-adherent to PrEP and none developed drug resistance. Among participants taking emtricitabine plus tenofovir alafenamide for up to 144 weeks, markers of glomerular filtration and proximal renal tubule dysfunction (β2-microglobulin to creatinine ratio and retinol-binding protein to creatinine ratio) improved or remained stable at 144 weeks compared with baseline, bone mineral density in hip and lumbar spine increased or remained stable from baseline to week 144 (n=191), cholesterol and glucose concentrations remained stable, and median bodyweight increased by less than 1 kg per year. In participants who switched from emtricitabine plus tenofovir disoproxil fumarate during the open-label phase (2115 [79%] of 2693), markers of glomerular filtration and proximal renal tubule dysfunction improved or remained stable, bone mineral density increased, cholesterol concentrations increased, glucose concentrations were similar, and median bodyweight increased more compared with those who remained on emtricitabine and tenofovir alafenamide. INTERPRETATION Routine HIV-1 RNA testing for follow-up of individuals on daily oral PrEP provides modest additional clinical benefit. Long-term use of emtricitabine and tenofovir alafenamide as daily oral PrEP is safe and well tolerated and can be an especially appropriate choice for people with bone or renal morbidities. FUNDING Gilead Sciences.
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Affiliation(s)
- David A Wohl
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Christoph D Spinner
- TUM School of Medicine and Health, Department of Clinical Medicine - Clinical Department for Internal Medicine II, University Medical Centre, Technical University of Munich, Munich, Germany
| | | | | | - Susanne Doblecki-Lewis
- Division of Infectious Diseases, University of Miami, Miller School of Medicine, Miami, FL, USA
| | | | - Jean-Michel Molina
- Infectious Diseases Department, Hopitaux Saint-Louis Lariboisière, University of Paris and INSERM U944, Paris, France
| | | | | | | | - Amanda Clarke
- Royal Sussex County Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK
| | | | | | | | | | | | | | | | | | | | - Robert M Grant
- University of California San Francisco, San Francisco, CA, USA; San Francisco AIDS Foundation, San Francisco, CA, USA
| | - Karam Mounzer
- Philadelphia FIGHT Community Health Centres, Philadelphia, PA, USA
| | - Kenneth Mayer
- The Fenway Institute, Fenway Health, Boston, MA, USA; Department of Medicine, Beth Israel Deaconess Medical Centre/Harvard Medical School, Boston, MA, USA
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Moschese D, Lazzarin S, Colombo ML, Caruso F, Giacomelli A, Antinori S, Gori A. Breakthrough Acute HIV Infections among Pre-Exposure Prophylaxis Users with High Adherence: A Narrative Review. Viruses 2024; 16:951. [PMID: 38932243 PMCID: PMC11209220 DOI: 10.3390/v16060951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/02/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024] Open
Abstract
Pre-exposure prophylaxis (PrEP) is a pivotal intervention among HIV prevention strategies. We aimed to narratively revise the topic of HIV acute infection in the setting of PrEP exposure with a focus on diagnostic options, clinical features, and future PrEP perspectives, with a particular focus on users with high adherence to PrEP. We searched the main databases (PubMed, Embase, and Scopus) with the keywords "PrEP" or "Pre-Exposure Prophylaxis" and "HIV" or "PLWH" and "breakthrough" or "acute infection" or "primary infection". We included all randomized clinical trials and non-experimental studies (both case reports and observational studies) ever published. In the present narrative review, we revise the diagnostic challenges related to HIV diagnosis in the setting of PrEP and the clinical characteristics and symptoms of breakthrough infections. We discuss the management of acute HIV infection during PrEP and the new challenges that arise from the use of long-acting drugs for PrEP. Our review underlines that although extremely rare, HIV seroconversions are still possible during PrEP, even in a context of high adherence. Efforts to promptly identify these events must be included in the PrEP follow-up in order to minimize the chance of overlooked HIV breakthrough infections and thus exposure to suboptimal concentrations of antiretrovirals.
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Affiliation(s)
- Davide Moschese
- I Division of Infectious Diseases, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, 20157 Milan, Italy;
| | - Samuel Lazzarin
- Department of Biomedical and Clinical Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (S.L.); (M.L.C.); (F.C.); (A.G.); (S.A.)
- III Infectious Diseases Unit, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, 20157 Milan, Italy
| | - Martina Laura Colombo
- Department of Biomedical and Clinical Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (S.L.); (M.L.C.); (F.C.); (A.G.); (S.A.)
- III Infectious Diseases Unit, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, 20157 Milan, Italy
| | - Francesco Caruso
- Department of Biomedical and Clinical Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (S.L.); (M.L.C.); (F.C.); (A.G.); (S.A.)
- II Infectious Diseases Unit, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, 20157 Milan, Italy
| | - Andrea Giacomelli
- Department of Biomedical and Clinical Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (S.L.); (M.L.C.); (F.C.); (A.G.); (S.A.)
- III Infectious Diseases Unit, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, 20157 Milan, Italy
| | - Spinello Antinori
- Department of Biomedical and Clinical Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (S.L.); (M.L.C.); (F.C.); (A.G.); (S.A.)
- III Infectious Diseases Unit, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, 20157 Milan, Italy
| | - Andrea Gori
- I Division of Infectious Diseases, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, 20157 Milan, Italy;
- Department of Biomedical and Clinical Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (S.L.); (M.L.C.); (F.C.); (A.G.); (S.A.)
- II Infectious Diseases Unit, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, 20157 Milan, Italy
- Centre for Multidisciplinary Research in Health Science (MACH), Università degli Studi di Milano, 20122 Milan, Italy
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Rachman BE, Khairunisa SQ, Wungu CDK, Asmarawati TP, Rusli M, Bramantono, Arfijanto MV, Hadi U, Kameoka M, Nasronudin. Low clinical impact of HIV drug resistance mutations in oral pre-exposure prophylaxis: a systematic review and meta-analysis. AIDS Res Ther 2024; 21:37. [PMID: 38844950 PMCID: PMC11155065 DOI: 10.1186/s12981-024-00627-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 05/29/2024] [Indexed: 06/10/2024] Open
Abstract
INTRODUCTION Despite the widespread use of pre-exposure prophylaxis (PrEP) in preventing human immunodeficiency virus (HIV) transmission, scant information on HIV drug resistance mutations (DRMs) has been gathered over the past decade. This review aimed to estimate the pooled prevalence of pre-exposure prophylaxis and its two-way impact on DRM. METHODS We systematically reviewed studies on DRM in pre-exposure prophylaxis according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis 2020 guidelines. PubMed, Cochrane, and SAGE databases were searched for English-language primary studies published between January 2001 and December 2023. The initial search was conducted on 9 August 2021 and was updated through 31 December 2023 to ensure the inclusion of the most recent findings. The registration number for this protocol review was CRD42022356061. RESULTS A total of 26,367 participants and 562 seroconversion cases across 12 studies were included in this review. The pooled prevalence estimate for all mutations was 6.47% (95% Confidence Interval-CI 3.65-9.93), while Tenofovir Disoproxil Fumarate/Emtricitabine-associated drug resistance mutation prevalence was 1.52% (95% CI 0.23-3.60) in the pre-exposure prophylaxis arm after enrolment. A subgroup analysis, based on the study population, showed the prevalence in the heterosexual and men who have sex with men (MSM) groups was 5.53% (95% CI 2.55-9.40) and 7.47% (95% CI 3.80-12.11), respectively. Notably, there was no significant difference in the incidence of DRM between the pre-exposure prophylaxis and placebo groups (log-OR = 0.99, 95% CI -0.20 to 2.18, I2 = 0%; p = 0.10). DISCUSSION Given the constrained prevalence of DRM, the World Health Organization (WHO) advocates the extensive adoption of pre-exposure prophylaxis. Our study demonstrated no increased risk of DRM with pre-exposure prophylaxis (p > 0.05), which is consistent with these settings. These findings align with the previous meta-analysis, which reported a 3.14-fold higher risk in the pre-exposure prophylaxis group than the placebo group, although the observed difference did not reach statistical significance (p = 0.21). CONCLUSIONS Despite the low prevalence of DRM, pre-exposure prophylaxis did not significantly increase the risk of DRM compared to placebo. However, long-term observation is required to determine further disadvantages of extensive pre-exposure prophylaxis use. PROSPERO Number: CRD42022356061.
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Affiliation(s)
- Brian Eka Rachman
- Subspeciality Program in Internal Medicine, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
- Institute of Tropical Disease, Airlangga University, Surabaya, Indonesia
| | | | - Citrawati Dyah Kencono Wungu
- Institute of Tropical Disease, Airlangga University, Surabaya, Indonesia
- Department of Physiology and Medical Biochemistry, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
| | - Tri Pudy Asmarawati
- Division of Tropical and Infectious Diseases, Department of Internal Medicine, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
| | - Musofa Rusli
- Division of Tropical and Infectious Diseases, Department of Internal Medicine, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
| | - Bramantono
- Division of Tropical and Infectious Diseases, Department of Internal Medicine, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
| | - M Vitanata Arfijanto
- Division of Tropical and Infectious Diseases, Department of Internal Medicine, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
| | - Usman Hadi
- Division of Tropical and Infectious Diseases, Department of Internal Medicine, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
| | - Masanori Kameoka
- Department of Public Health, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-Ku, Kobe, Hyogo, 654-0142, Japan.
- Center for Infectious Diseases, Kobe University Graduate School of Medicine, Hyogo, Japan.
| | - Nasronudin
- Institute of Tropical Disease, Airlangga University, Surabaya, Indonesia
- Division of Tropical and Infectious Diseases, Department of Internal Medicine, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
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Ullah Nayan M, Sillman B, Hasan M, Deodhar S, Das S, Sultana A, Thai Hoang Le N, Soriano V, Edagwa B, Gendelman HE. Advances in long-acting slow effective release antiretroviral therapies for treatment and prevention of HIV infection. Adv Drug Deliv Rev 2023; 200:115009. [PMID: 37451501 DOI: 10.1016/j.addr.2023.115009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/21/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Adherence to daily oral antiretroviral therapy (ART) is a barrier to both treatment and prevention of human immunodeficiency virus (HIV) infection. To overcome limitations of life-long daily regimen adherence, long-acting (LA) injectable antiretroviral (ARV) drugs, nanoformulations, implants, vaginal rings, microarray patches, and ultra-long-acting (ULA) prodrugs are now available or in development. These medicines enable persons who are or at risk for HIV infection to be treated with simplified ART regimens. First-generation LA cabotegravir, rilpivirine, and lenacapavir injectables and a dapivirine vaginal ring are now in use. However, each remains limited by existing dosing intervals, ease of administration, or difficulties in finding drug partners. ULA ART regimens provide an answer, but to date, such next-generation formulations remain in development. Establishing the niche will require affirmation of extended dosing, improved access, reduced injection volumes, improved pharmacokinetic profiles, selections of combination treatments, and synchronization of healthcare support. Based on such needs, this review highlights recent pharmacological advances and a future treatment perspective. While first-generation LA ARTs are available for HIV care, they remain far from ideal in meeting patient needs. ULA medicines, now in advanced preclinical development, may close gaps toward broader usage and treatment options.
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Affiliation(s)
- Mohammad Ullah Nayan
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, NE, USA
| | - Brady Sillman
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, NE, USA
| | - Mahmudul Hasan
- Department of Pharmaceutical Science, University of Nebraska Medical Center, NE, USA
| | - Suyash Deodhar
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, NE, USA
| | - Srijanee Das
- Department of Pathology and Microbiology, University of Nebraska Medical Center, NE, USA
| | - Ashrafi Sultana
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, NE, USA
| | - Nam Thai Hoang Le
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, NE, USA
| | | | - Benson Edagwa
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, NE, USA.
| | - Howard E Gendelman
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, NE, USA.
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Hazra A, Landovitz RJ, Marzinke MA, Quinby C, Creticos C. Breakthrough HIV-1 infection in setting of cabotegravir for HIV pre-exposure prophylaxis. AIDS 2023; 37:1711-1714. [PMID: 37418423 DOI: 10.1097/qad.0000000000003644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2023]
Abstract
OBJECTIVE We describe the first case of HIV-1 infection in the setting of long-acting injectable cabotegravir (CAB-LA) for HIV pre-exposure prophylaxis to occur in the real world. DESIGN Case report. METHODS Electronic medical records were reviewed to assess patient history and CAB-LA administration details. Plasma fourth-generation HIV-1/2 Ag/Ab combination immunoassay and HIV-1 RNA quantitative PCR were performed at each injection visit. RESULTS We report a 28-year-old sex-diverse person assigned male at birth who acquired HIV-1 infection 91 days after transitioning from tenofovir alafenamideemtricitabine to CAB-LA despite on-time dosing and appropriate laboratory monitoring. CONCLUSION This patient's history suggests HIV infection despite on-time and appropriate CAB-LA injections. To our knowledge, this is the first case of CAB-LA pre-exposure prophylaxis failure outside the setting of a clinical trial and highlights diagnostic and management challenges that may occur with such breakthrough infections.
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Affiliation(s)
- Aniruddha Hazra
- Howard Brown Health
- Section of Infectious Diseases and Global Health, Department of Medicine, University of Chicago Medicine, Chicago, IL
| | - Raphael J Landovitz
- Center for Clinical AIDS Research and Education, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - Mark A Marzinke
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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6
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L C, M C, P N, T D, K T, P T, P S, P P, V P, J S, L D, N T, J N, M M. Providing HIV pre-exposure prophylaxis to men who have sex with men and transgender women in hospitals and community-led clinics in Thailand: acceptance, patterns of use, trends in risk behaviors, and HIV incidence. AIDS Care 2023; 35:524-537. [PMID: 36726288 PMCID: PMC10121879 DOI: 10.1080/09540121.2022.2159312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 12/13/2022] [Indexed: 02/03/2023]
Abstract
From May 2015 to June 2018, we conducted a PrEP demonstration project at two hospitals and four community-led clinics in Bangkok and Pattaya. HIV-negative, MSM and TGW aged ≥18 years old, reporting sex without a condom, were offered daily PrEP. Participants received HIV testing and completed a computer-based questionnaire at enrollment, 6 and 12 months. We collected self-reported PrEP adherence at months 1, 3, 6, 9, and 12. We used logistic regression to determine factors associated with the decision to take PrEP and calculated HIV incidence among baseline HIV-negative participants. Of 803 participants enrolled, 349 (43.5%) started PrEP. Participants were more likely to start PrEP if they were sex workers, had moderate or high self-perceived risk of HIV, or a high PrEP-knowledge score. Participants used PrEP for a median of 6.1 months. Reported condom use increased and the number of sex partners decreased during follow-up regardless of PrEP use. Six participants not-taking PrEP acquired HIV (HIV incidence 2.2 per 100 person-years), and five taking PrEP acquired HIV (HIV incidence 2.1 per 100 person-years). All five reported taking <4 pills the weeks before study visits.
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Affiliation(s)
- Cheewanan L
- Division of AIDS and STIs, Ministry of Public Health, Bangkok, Thailand
| | - Chomnad M
- Division of Global HIV & Tuberculosis, U.S. Centers for Disease Control and Prevention, Nonthaburi, Thailand
| | - Nittaya P
- Institute of HIV Research and Innovation, Bangkok, Thailand
| | - Deondara T
- Institute of HIV Research and Innovation, Bangkok, Thailand
| | - Thana K
- Faculty of Medicine, Thammasat University, Pathumthani, Thailand
| | - Tharee P
- Department of Medical Services, Ministry of Public Health, Lerdsin hospital, Bangkok, Thailand
| | - Supabhorn P
- Institute of HIV Research and Innovation, Bangkok, Thailand
| | - Patcharaporn P
- Division of AIDS and STIs, Ministry of Public Health, Bangkok, Thailand
| | - Prin V
- Division of Global HIV & Tuberculosis, U.S. Centers for Disease Control and Prevention, Nonthaburi, Thailand
| | - Surang J
- Service Workers in Group Foundation (SWING), Bangkok, Thailand
| | - Danai L
- Rainbow Sky Association of Thailand, Bangkok, Thailand
| | | | - Nuchapong J
- Division of Global HIV & Tuberculosis, U.S. Centers for Disease Control and Prevention, Nonthaburi, Thailand
| | - Michael M
- Division of Global HIV & Tuberculosis, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USA
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Shuper PA, Varatharajan T, Kinitz DJ, Gesink D, Joharchi N, Bogoch II, Loutfy M, Rehm J. Perceived influence of alcohol consumption, substance use, and mental health on PrEP adherence and condom use among PrEP-prescribed gay, bisexual, and other men-who-have-sex-with-men: a qualitative investigation. BMC Public Health 2022; 22:1875. [PMID: 36207757 PMCID: PMC9540691 DOI: 10.1186/s12889-022-14279-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 09/30/2022] [Indexed: 12/02/2022] Open
Abstract
Background Gay, bisexual, and other men-who-have-sex-with-men (GBMSM) continue to be disproportionately affected by Human Immunodeficiency Virus (HIV). Although HIV pre-exposure prophylaxis (PrEP) offers an effective means of reducing incident HIV among this population, the HIV-preventive success of oral-based PrEP is contingent upon regimen adherence. Elevated rates of alcohol-, substance use-, and mental health-related issues among GBMSM potentially hinder PrEP-taking efforts, however the evidence for this remains mixed. Accordingly, the present study entailed a comprehensive qualitative investigation to explore PrEP-prescribed GBMSM’s perceptions surrounding the influence of alcohol, substance use, and mental health on PrEP adherence. Methods PrEP-prescribed GBMSM (age ≥ 18 years; prescribed PrEP for ≥ 3 months) were recruited from two PrEP-delivery clinics in Toronto, Canada for focus groups as part of the formative phase of an alcohol-, substance use-, and mental health-focused randomized controlled intervention trial. Focus group discussions qualitatively explored perceived strengths and barriers associated with adherence to PrEP treatment; with an emphasis on alcohol, substance use, and mental health concerns. Condom use among PrEP-prescribed GBMSM within the context of these concerns was also discussed. Results A total of five focus groups involving 35 GBMSM were conducted (4–10/group; mean age = 42.4; white = 71.4%). Although participants themselves generally reported successfully adhering to their PrEP regimens—resulting from a strong, underlying motivation for self-care—they recognized the detrimental impact that alcohol, substance use, and mental health had on adherence among their peers. In this regard, alcohol and substances were perceived as detracting from adherence only when consumption was excessive or temporally linked to PrEP dosing. Pronounced mental health issues (e.g., severe depression) were also seen as hindering adherence, although these effects were nuanced and perceived as person-dependent. Alcohol and substances were linked to condomless sex, regardless of PrEP use, and PrEP was therefore viewed as an HIV-protective ‘safety net.’ Conclusions Overall, findings suggest that PrEP adherence can often be successfully achieved in the presence of alcohol-, substance use-, and mental health-related issues. Augmenting self-care, and addressing pronounced addictions- and mental health-related concerns, may enhance PrEP treatment among GBMSM.
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Affiliation(s)
- Paul A Shuper
- Centre for Addiction and Mental Health (CAMH), Institute for Mental Health Policy Research & Campbell Family Mental Health Research Institute, 33 Russell St., Toronto, ON, M5S 2S1, Canada. .,Dalla Lana School of Public Health, University of Toronto, 155 College St., Toronto, ON, M5T 3M7, Canada.
| | | | - David J Kinitz
- Dalla Lana School of Public Health, University of Toronto, 155 College St., Toronto, ON, M5T 3M7, Canada
| | - Dionne Gesink
- Dalla Lana School of Public Health, University of Toronto, 155 College St., Toronto, ON, M5T 3M7, Canada
| | - Narges Joharchi
- Centre for Addiction and Mental Health (CAMH), Institute for Mental Health Policy Research & Campbell Family Mental Health Research Institute, 33 Russell St., Toronto, ON, M5S 2S1, Canada
| | - Isaac I Bogoch
- Divisions of General Internal Medicine and Infectious Diseases, University Health Network, 200 Elizabeth St., Toronto, ON, M5G 2C4, Canada.,Department of Medicine, Medical Sciences Building, University of Toronto, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada
| | - Mona Loutfy
- Department of Medicine, Medical Sciences Building, University of Toronto, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada.,Women's College Hospital, 76 Grenville S.t, Toronto, ON, M5S 1B2, Canada.,Maple Leaf Medical Clinic, 14 College St., Toronto, ON, M5G 1K2, Canada
| | - Jürgen Rehm
- Centre for Addiction and Mental Health (CAMH), Institute for Mental Health Policy Research & Campbell Family Mental Health Research Institute, 33 Russell St., Toronto, ON, M5S 2S1, Canada.,Dalla Lana School of Public Health, University of Toronto, 155 College St., Toronto, ON, M5T 3M7, Canada.,Department of Psychiatry, University of Toronto, 250 College St., Toronto, ON, M5T 1R8, Canada.,Center for Interdisciplinary Addiction Research (ZIS), Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246, Hamburg, Germany.,Institute of Clinical Psychology and Psychotherapy, Technische Universität Dresden, Chemnitzer Straße 46, 01187, Dresden, Germany.,Faculty of Medicine, Institute of Medical Science, Medical Sciences Building, University of Toronto, King's College Circle, Room 2374, Toronto, ON, M5S 1A8, Canada.,Program On Substance Abuse & WHO CC, Public Health Agency of Catalonia, 81-95 Roc Boronat St., 08005, Barcelona, Spain.,I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Street 8, b. 2, Moscow, 119991, Russian Federation
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Parikh UM, Mellors JW. How could HIV-1 drug resistance impact preexposure prophylaxis for HIV prevention? Curr Opin HIV AIDS 2022; 17:213-221. [PMID: 35762376 PMCID: PMC9245149 DOI: 10.1097/coh.0000000000000746] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW To review current laboratory and clinical data on the frequency and relative risk of drug resistance and range of mutations selected from approved and investigational antiretroviral agents used for preexposure prophylaxis (PrEP) of HIV-1 infection, including tenofovir disproxil fumarate (TDF)-based oral PrEP, dapivirine ring, injectable cabotegravir (CAB), islatravir, lenacapavir and broadly neutralizing antibodies (bNAbs). RECENT FINDINGS The greatest risk of HIV-1 resistance from PrEP with oral TDF/emtricitabine (FTC) or injectable CAB is from starting or continuing PrEP after undiagnosed acute HIV infection. By contrast, the dapivirine intravaginal ring does not appear to select nonnucleoside reverse transcriptase inhibitor resistance in clinical trial settings. Investigational inhibitors including islatravir, lenacapavir, and bNAbs are promising for use as PrEP due to their potential for sustained delivery and low risk of cross-resistance to currently used antiretrovirals, but surveillance for emergence of resistance mutations in more HIV-1 gene regions (gag, env) will be important as the same drugs are being developed for HIV therapy. SUMMARY PrEP is highly effective in preventing HIV infection. Although HIV drug resistance from PrEP use could impact future options in individuals who seroconvert on PrEP, the current risk is low and continued monitoring for the emergence of resistance and cross-resistance during product development, clinical studies, and product roll-out is advised to preserve antiretroviral efficacy for both treatment and prevention.
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Affiliation(s)
- Urvi M Parikh
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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9
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Prakash R, Krishnamurthy Yashaswini M. Streamlining Laboratory Tests for HIV Detection. Infect Dis (Lond) 2022. [DOI: 10.5772/intechopen.105096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
HIV is a retrovirus that primarily infects CD4 presenting cells of the human immune system, such as macrophages and dendritic cells. People die of AIDS because the disease remains undetected for long periods of time. HIV diagnostic testing has come a long way since it was introduced in the early 1980s. Early diagnosis is key to successful treatment of HIV. Assay selection is based on initial screening results and clinical information provided by the physician, both of which are essential for the laboratory’s ability to make accurate diagnoses. Detecting HIV with high specificity and sensitivity in the early stages of infection requires simple, accurate and economical methods. In this chapter we have described the indications & criteria’s for HIV testing, HIV diagnosis by utilizing variety of immunological and molecular methods, like ELISA, rapid diagnostics, Western blotting, indirect immunoassays, and nucleic acid-based tests. Diagnostic laboratories must use testing algorithms to ensure the accuracy of results and the optimal use of lab resources. Participation in laboratory quality assurance programs are also essential to ensure that diagnostic laboratories provide accurate, timely and clinically relevant test results. HIV testing is the first step in maintaining a healthy life and preventing HIV transmission.
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Zucker J, Carnevale C, Gordon P, Sobieszczyk ME, Rai AJ. Am I Positive? Improving HIV Testing in the Era of Pre-Exposure Prophylaxis (PrEP) and Immediate Anti-Retroviral Therapy (iART) using Machine Learning. Open Forum Infect Dis 2022; 9:ofac259. [PMID: 35854989 PMCID: PMC9290571 DOI: 10.1093/ofid/ofac259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 05/17/2022] [Indexed: 11/28/2022] Open
Abstract
Background Human immunodeficiency virus (HIV) testing is the first step in the HIV prevention cascade. The Centers for Disease Control and Prevention HIV laboratory diagnostic testing algorithm was developed before preexposure prophylaxis (PrEP) and immediate antiretroviral therapy (iART) became standards of care. PrEP and iART have been shown to delay antibody development and affect the performance of screening HIV assays. Quantitative results from fourth-generation HIV testing may be helpful to disambiguate HIV testing. Methods We retrospectively reviewed 38 850 results obtained at an urban, academic medical center. We assessed signal-to-cutoff (s/co) distribution among positive and negative tests, in patients engaged and not engaged in an HIV prevention program, and evaluated changes in patients with multiple results. Classification and regression tree (CART) analysis was used to determine a threshold cutoff, and logistic regression was used to identify predictors of true positive tests. Results Ninety-seven percent of patients with a negative HIV test had a result that was ≤0.2 s/co. For patients tested more than once, we found differences in s/co values did not exceed 0.2 s/co for 99.2% of results. CART identified an s/co value, 38.78, that in logistic regression on a unique validation cohort remained associated with the likelihood of a true-positive HIV result (odds ratio, 2.49). Conclusions Machine-learning methods may be used to improve HIV screening by automating and improving interpretations, incorporating them into robust algorithms, and improving disease prediction. Further investigation is warranted to confirm if s/co values combined with a patient's risk profile will allow for better clinical decision making for individuals on PrEP or eligible for iART.
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Affiliation(s)
- Jason Zucker
- Department of Internal Medicine, Division of Infectious Diseases, Columbia University Irving Medical Center, New York, NY, USA
| | - Caroline Carnevale
- New York Presbyterian Hospital's Comprehensive Health Center HIV Prevention Program, New York, NY, USA
| | - Peter Gordon
- Department of Internal Medicine, Division of Infectious Diseases, Columbia University Irving Medical Center, New York, NY, USA
| | - Magdalena E Sobieszczyk
- Department of Internal Medicine, Division of Infectious Diseases, Columbia University Irving Medical Center, New York, NY, USA
| | - Alex J. Rai
- Department of Pathology & Cell Biology, Columbia University Irving Medical Center, New York, NY, USA
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11
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Towards achieving the end of the HIV epidemic: advances, challenges and scaling up strategies. Clin Biochem 2022; 117:53-59. [DOI: 10.1016/j.clinbiochem.2022.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 04/05/2022] [Accepted: 05/20/2022] [Indexed: 11/17/2022]
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12
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Lemos MP, Nandi V, Dragavon J, Fleming I, Krishnan K, Musuruana M, Kramer M, Glantz H, Andrasik M, Coombs RW, McElrath MJ, Tieu HV. HIV-1 Nucleic Acids Identify Rectal HIV Exposures in Self-Collected Rectal Swabs, Whereas Y-Chromosome Single Tandem Repeat Mixtures Are Not Reliable Biomarkers of Condomless Receptive Anal Intercourse. J Acquir Immune Defic Syndr 2021; 88:138-148. [PMID: 34506358 PMCID: PMC8439546 DOI: 10.1097/qai.0000000000002748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 05/10/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND To focus interventions, biomarkers of HIV-1 exposure could help in identifying subpopulations at highest risk of acquisition. We assessed whether Y-chromosome single tandem repeat (YSTR) mixtures obtained from rectal swabs could serve as a biomarker of condomless receptive anal intercourse (CRAI) among men who have sex with men and transgender women and evaluated the feasibility of detecting HIV-1 virions to assess exposures. METHODS Twenty-nine sexually active HIV-seronegative men who have sex with men and one transgender woman from New York City answered on-site and mobile app sexual behavior questionnaires. They were randomized to collecting self-administered rectal swabs every morning or after receptive anal intercourse (RAI). YSTR profiles were assessed from blood sample and swabs; HIV-1 exposure was measured by conducting quantitative polymerase chain reaction in swabs. RESULTS After 2 months, the daily mobile survey had 135%-201% more instances of anal sex acts and 170%-193% more RAI than on-site surveys. Daily mobile reporting had 11%-35% less CRAI events than those reported on-site (Pdaily = 0.001; Pper-sex = 0.047). The daily swabbing arm reported less RAI (P < 0.001) and CRAI (P < 0.038) and had 2.95 lower odds of detecting YSTR mixtures (P = 0.021) than the per-sex-event arm. Surprisingly, YSTR detection was not significantly modified by report of bowel movements and lubricant, enema, or condom use. No participant became HIV-1 infected, yet HIV-1 total nucleic acids were detected in 6 independent episodes of CRAI in 2 participants taking pre-exposure prophylaxis. CONCLUSIONS YSTR mixtures demonstrated 80% specificity but only 30% sensitivity as a biomarker of CRAI in self-collected rectal swabs. However, detection of HIV-1 exposures in self-collected swabs may help in identifying those needing further HIV risk reduction strategies.
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Affiliation(s)
- Maria P. Lemos
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Vijay Nandi
- Laboratory of Data Analytics, Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY
| | - Joan Dragavon
- Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
| | - Ira Fleming
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Keertana Krishnan
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Martin Musuruana
- Laboratory of Data Analytics, Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY
| | - Madeline Kramer
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Hayley Glantz
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Michele Andrasik
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Robert W. Coombs
- Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
- Department of Pathology, University of Washington, Seattle, WA, USA
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - M. Juliana McElrath
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Hong-Van Tieu
- Laboratory of Infectious Disease Prevention, Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY
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Application of next generation sequencing in HIV drug resistance studies in Africa, 2005–2019: A systematic review. SCIENTIFIC AFRICAN 2021. [DOI: 10.1016/j.sciaf.2021.e00829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Best A, Rambarran N. The demographic features and outcome indicators of the Barbados HIV Pre-exposure Prophylaxis Program, 2018-2019. Rev Panam Salud Publica 2021; 45:e51. [PMID: 33907558 PMCID: PMC8064290 DOI: 10.26633/rpsp.2021.51] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 01/26/2021] [Indexed: 12/17/2022] Open
Abstract
Objective. To assess the demographics, risk profiles and outcome indicators of one of the few government-supported programs on pre-exposure prophylaxis (PrEP) in the English-speaking Caribbean. Methods. Chart review of all persons enrolled into the national PrEP Program from its inception on March 1st 2018 to November 30th 2019, with a descriptive summary analysis of the data extracted. Results. Of the 134 persons enrolled into the program most identified as men who have sex with men (67.9%), followed by men who have sex with men and women (14.9%); there were 20 persons, mostly men (85%), in sero-discordant relationships. PrEP uptake was 96%; however, the continuation rate (continuing for three consecutive months after initiation) was 61.5%. Continuation status for many could not be ascertained due to loss-to-follow-up. PrEP-associated toxicity prevalence was 2.3%, although side-effects occurred in 52% (mostly gastrointestinal). HIV positivity during the study period was 1.5%. Conclusions. Uptake of Barbados’ national PrEP Program is excellent but fairly low continuation rates and the HIV positivity rate indicate the need for improved pre-ART initiation education and follow-up processes. Service utilisation is mainly by men who have sex with men, and provision expansion to other civil society partners and private practitioners, as well as increased public awareness could increase access by other high-risk groups.
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Affiliation(s)
- Anton Best
- Ministry of Health and Wellness Bridgetown Barbados Ministry of Health and Wellness, Bridgetown, Barbados
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15
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Marzinke MA, Grinsztejn B, Fogel JM, Piwowar-Manning E, Li M, Weng L, McCauley M, Cummings V, Ahmed S, Haines CD, Bushman LR, Petropoulos C, Persaud D, Adeyeye A, Kofron R, Rinehart A, St Clair M, Rooney JF, Pryluka D, Coelho L, Gaur A, Middelkoop K, Phanuphak N, Cohen MS, Hendrix CW, Anderson P, Hanscom B, Donnell D, Landovitz RJ, Eshleman SH. Characterization of HIV infection in cisgender men and transgender women who have sex with men receiving injectable cabotegravir for HIV prevention: HPTN 083. J Infect Dis 2021; 224:1581-1592. [PMID: 33740057 DOI: 10.1093/infdis/jiab152] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 03/18/2021] [Indexed: 12/17/2022] Open
Abstract
INTRODUCTION The HIV Prevention Trials Network (HPTN) 083 trial demonstrated that long-acting cabotegravir (CAB-LA) was more effective than tenofovir disoproxil fumarate/emtricitabine (TDF/FTC) for HIV prevention in cisgender men and transgender women who have sex with men. We characterized HIV infections that occurred in the blinded phase of HPTN 083. METHODS Retrospective testing included HIV testing, viral load testing, quantification of study drugs and HIV drug resistance testing. RESULTS Fifty-eight infections were evaluated, including 51 incident infections (12 CAB, 39 TDF/FTC). In many cases (5 CAB, 37 TDF/FTC), infection was associated with low or unquantifiable study drug concentrations. In four cases, infection occurred with on-time CAB-LA injections and expected plasma CAB concentrations. CAB exposure was associated with prolonged viral suppression and delayed antibody expression. In some cases, delayed HIV diagnosis resulted in CAB provision to participants with undetected infection, delayed antiretroviral treatment (ART), and emergence of drug resistance; most of these infections would have been detected earlier with viral load testing. CONCLUSIONS Early detection of HIV infection and prompt ART initiation could improve clinical outcomes in persons who become infected despite CAB-LA prophylaxis. Further studies are needed to elucidate the correlates of HIV protection in persons receiving CAB-LA.
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Affiliation(s)
- Mark A Marzinke
- Dept. of Pathology, Johns Hopkins Univ. School of Medicine, Baltimore, MD, USA
| | - Beatriz Grinsztejn
- Instituto de Pesquisa Clinica Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil
| | - Jessica M Fogel
- Dept. of Pathology, Johns Hopkins Univ. School of Medicine, Baltimore, MD, USA
| | | | - Maoji Li
- Fred Hutchinson Cancer Research Center, Seattle, WA, , USA
| | - Lei Weng
- Fred Hutchinson Cancer Research Center, Seattle, WA, , USA
| | | | - Vanessa Cummings
- Dept. of Pathology, Johns Hopkins Univ. School of Medicine, Baltimore, MD, USA
| | - Shahnaz Ahmed
- Dept. of Pathology, Johns Hopkins Univ. School of Medicine, Baltimore, MD, USA
| | - Casey D Haines
- Dept. of Pathology, Johns Hopkins Univ. School of Medicine, Baltimore, MD, USA
| | | | | | - Deborah Persaud
- Dept. of Pediatrics, Johns Hopkins Univ. School of Medicine, Baltimore, MD, USA
| | - Adeola Adeyeye
- Prevention Science Program, DAIDS, NIAID, NIH, Rockville, MD, USA
| | - Ryan Kofron
- Dept. of Medicine, Univ. of California at Los Angeles, Los Angeles, CA, USA
| | | | | | | | | | - Lara Coelho
- Instituto de Pesquisa Clinica Evandro Changas-Fiocruz, Rio de Janeiro, Brazil
| | - Aditya Gaur
- St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Keren Middelkoop
- Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Nittaya Phanuphak
- Institute of HIV Research and Innovation, Bangkok, Thailand; Center of Excellence in Transgender Health, Chulalongkorn University, Bangkok, Thailand
| | | | - Craig W Hendrix
- Dept. of Pathology, Johns Hopkins Univ. School of Medicine, Baltimore, MD, USA
| | | | - Brett Hanscom
- Fred Hutchinson Cancer Research Center, Seattle, WA, , USA
| | | | - Raphael J Landovitz
- Center for Clinical AIDS Research & Education, Univ. of California, Los Angeles, Los Angeles, CA, USA
| | - Susan H Eshleman
- Dept. of Pathology, Johns Hopkins Univ. School of Medicine, Baltimore, MD, USA
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Nondaily Use of HIV Preexposure Prophylaxis in a Large Online Survey of Primarily Men Who Have Sex With Men in the United States. J Acquir Immune Defic Syndr 2021; 84:182-188. [PMID: 32168169 DOI: 10.1097/qai.0000000000002332] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Event-driven dosing of HIV preexposure prophylaxis (PrEP) using a 2-1-1 regimen is efficacious for men who have sex with men (MSM). However, data are limited on the prevalence, correlates, and patterns of nondaily PrEP use in the United States. SETTING Nationwide online survey. METHODS We distributed a survey to assess experiences with PrEP, including nondaily use, in May 2019 on geosocial networking sites commonly used by MSM. RESULTS Among 9697 respondents, the mean age was 43 years, 67% were non-Hispanic white, and 90% were MSM. Nearly all (91.0%) had heard of PrEP, 40.1% ever used PrEP, and 33.3% used PrEP in the past 6 months. Most (60.6%) were interested in nondaily PrEP. Those without health insurance and those with higher incomes were more likely to be interested in nondaily PrEP. Of the 3232 who used PrEP in the past 6 months, 176 (5.4%) reported nondaily use. Fewer sexual partners, frequent sex planning, and substance use were associated with nondaily use. Common reasons for nondaily use were inconsistent sexual activity (59%) and cost (49%). The most prevalent regimen was event driven (48.3%); of those, 64.7% used 2-1-1. Of nondaily users, 24.0% used PrEP on a regular schedule but not every day, including only on weekends or days starting with T or S. CONCLUSIONS Given substantial interest in nondaily PrEP, and use of nondaily strategies that have not been evaluated in clinical studies, there is a need for US public health authorities to provide guidance on safe and effective nondaily dosing for MSM.
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Ambrosioni J, Petit E, Liegeon G, Laguno M, Miró JM. Primary HIV-1 infection in users of pre-exposure prophylaxis. Lancet HIV 2020; 8:e166-e174. [PMID: 33316212 DOI: 10.1016/s2352-3018(20)30271-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 08/23/2020] [Accepted: 09/11/2020] [Indexed: 12/14/2022]
Abstract
Pre-exposure prophylaxis (PrEP) has proven to be a highly effective and safe way to prevent HIV infection. Seroconversion and primary HIV infection are exceptional if adherence to PrEP is good. However, primary HIV infection while using PrEP can occur, albeit rarely, and HIV drug resistance might develop. Furthermore, the scope of PrEP is expected to expand, and clinicians might face potential seroconversions and primary HIV infection in patients starting or taking PrEP. The characteristics of primary HIV infection in users of PrEP are poorly described. PrEP users present a lower viral load peak during primary HIV infection and, frequently, fewer symptoms than individuals not exposed to PrEP. Additionally, PrEP prolongs the stages of seroconversion, thus potentially complicating diagnosis of primary HIV infection. Drug resistance is rare, occurring mostly when PrEP is initiated in undiagnosed patients who are at an extremely early stage of infection, in whom detection of HIV-RNA was not used to rule out HIV infection. Therefore, careful exclusion of primary HIV infection before starting PrEP is crucial. In patients presenting with primary HIV infection while on PrEP, a drug with a high genetic barrier (or even two) should be added to tenofovir disoproxil fumarate-emtricitabine until test results for resistance are available.
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Affiliation(s)
- Juan Ambrosioni
- HIV Unit and Infectious Diseases Service, Hospital Clinic-IDIBAPS, Barcelona, Spain.
| | - Elisa Petit
- School of Medicine, University of Barcelona, Barcelona, Spain
| | - Geoffroy Liegeon
- Infectious Disease Department, Saint-Louis Hospital, Paris, France
| | - Montserrat Laguno
- HIV Unit and Infectious Diseases Service, Hospital Clinic-IDIBAPS, Barcelona, Spain; PrEP and Sexual Health Program, Hospital Clinic-IDIBAPS, Barcelona, Spain
| | - José M Miró
- School of Medicine, University of Barcelona, Barcelona, Spain
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Rutstein SE, Smith DK, Dalal S, Baggaley RC, Cohen MS. Initiation, discontinuation, and restarting HIV pre-exposure prophylaxis: ongoing implementation strategies. Lancet HIV 2020; 7:e721-e730. [PMID: 32861269 DOI: 10.1016/s2352-3018(20)30203-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/09/2020] [Accepted: 05/05/2020] [Indexed: 12/15/2022]
Abstract
When used appropriately, pre-exposure prophylaxis (PrEP) substantially reduces the risk of HIV acquisition. Early implementation outcomes often suggest poor PrEP adherence and persistence; however, this intervention is time-limited and the need for PrEP fluctuates as risk behaviours change. In this Viewpoint we examine the current guidelines and early programmatic outcomes after starting, stopping, and restarting PrEP, and we review the implications of PrEP in relation to HIV testing algorithms. Guidelines suggest to discontinue PrEP when a person is no longer at risk for HIV, but effectively implementing this strategy requires support tools to make the decision of stopping and restarting PrEP that considers the complex relationship between risk perceptions and risk behaviours. Safely discontinuing PrEP also requires greater understanding of the daily dosing duration that is needed to protect the person after their last HIV exposure. Additionally, clear strategies are needed to re-engage a person as their HIV exposure risk changes over time.
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Affiliation(s)
- Sarah E Rutstein
- Department of Medicine, University of North Carolina, Chapel Hill, NC, USA.
| | - Dawn K Smith
- National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Shona Dalal
- Department of Global HIV, Hepatitis, and STI Programmes, WHO, Geneva, Switzerland
| | - Rachel C Baggaley
- Department of Global HIV, Hepatitis, and STI Programmes, WHO, Geneva, Switzerland
| | - Myron S Cohen
- Department of Medicine, University of North Carolina, Chapel Hill, NC, USA
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Naicker CL, Mansoor LE, Dawood H, Naidoo K, Singo D, Matten D, Williamson C, Abdool Karim Q. Importance of early identification of PrEP breakthrough infections in a generalized HIV epidemic: a case report from a PrEP demonstration project in South Africa. BMC Infect Dis 2020; 20:532. [PMID: 32698772 PMCID: PMC7374822 DOI: 10.1186/s12879-020-05255-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 07/14/2020] [Indexed: 11/10/2022] Open
Abstract
Background The World Health Organisation recommends the use of tenofovir-containing pre-exposure prophylaxis (PrEP) as an additional Human Immunodeficiency Virus (HIV) prevention choice for men and women at substantial risk of HIV infection. PrEP could fill an important HIV prevention gap, especially for sexually active young women who are limited in their ability to negotiate mutual monogamy or condom use. As PrEP is scaled up in high HIV incidence settings, it is crucial to consider the importance of early identification of HIV infection during PrEP use, to allow for rapid discontinuation of PrEP to reduce the risk of antiretroviral (ARV) resistance. The purpose of this case study is to provide this critical evidence. Case presentation This report describes a 20-year-old woman in a HIV sero-discordant relationship who initiated oral PrEP (tenofovir disoproxil fumarate (TDF) and emtricitabine (FTC)) through a demonstration project (CAPRISA 084) in October 2017. Despite good adherence throughout her PrEP use, she tested HIV antibody positive at month nine of study participation. Retrospective testing showed increasing HIV viral load over time, and retrospective use of fourth-generation rapid HIV tests showed HIV detection (positive antigen/antibody) at month one. Sequencing confirmed a dominant wild type at month one with dual therapy resistance patterns emerging by month three (M184V and K65R mutations), which is suggestive of protracted PrEP use during an undetected HIV infection. The participant was referred to infectious diseases for further management of her HIV infection and was initiated on a first line, tenofovir-sparing regimen. At the time of this report (January 2020), the participant had been on ARV- therapy (ART) for 13 months and had no signs of either clinical, immunologic or virologic failure. Conclusions This case report highlights the importance of appropriate HIV screening during wider oral PrEP scale-up in high HIV incidence settings to circumvent the consequences of prolonged dual therapy in an undiagnosed HIV infection and in turn prevent ARV resistance.
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Affiliation(s)
- Cherise L Naicker
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - Leila E Mansoor
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa.
| | - Halima Dawood
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - Kogieleum Naidoo
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa.,MRC-CAPRISA HIV-TB Pathogenesis and Treatment Research Unit, University of KwaZulu-Natal, Durban, South Africa
| | - Denzhe Singo
- Division of Medical Virology, University of Cape Town, Cape Town, South Africa.,The National Health Laboratory Service, Cape Town, South Africa
| | - David Matten
- Division of Medical Virology, University of Cape Town, Cape Town, South Africa
| | - Carolyn Williamson
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa.,Division of Medical Virology, University of Cape Town, Cape Town, South Africa.,The National Health Laboratory Service, Cape Town, South Africa.,Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, USA
| | - Quarraisha Abdool Karim
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa.,Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, USA
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Antibody testing will enhance the power and accuracy of COVID-19-prevention trials. Nat Med 2020; 26:818-819. [PMID: 32341581 DOI: 10.1038/s41591-020-0887-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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21
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Elliott T, Sanders EJ, Doherty M, Ndung'u T, Cohen M, Patel P, Cairns G, Rutstein SE, Ananworanich J, Brown C, Fidler S. Challenges of HIV diagnosis and management in the context of pre-exposure prophylaxis (PrEP), post-exposure prophylaxis (PEP), test and start and acute HIV infection: a scoping review. J Int AIDS Soc 2019; 22:e25419. [PMID: 31850686 PMCID: PMC6918508 DOI: 10.1002/jia2.25419] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 10/22/2019] [Indexed: 02/06/2023] Open
Abstract
INTRODUCTION Knowledge of HIV status relies on accurate HIV testing, and is the first step towards access to HIV treatment and prevention programmes. Globally, HIV-status unawareness represents a significant challenge for achieving zero new HIV infections and deaths. In order to enhance knowledge of HIV status, the World Health Organisation (WHO) recommends a testing strategy that includes the use of HIV-specific antibody point-of-care tests (POCT). These POCTs do not detect acute HIV infection, the stage of disease when viral load is highest but HIV antibodies are undetectable. Complicating things further, in the presence of antiretroviral therapy (ART) for pre-exposure prophylaxis (PrEP) or post-exposure prophylaxis (PEP), other currently available testing technologies, such as viral load detection for diagnosis of acute HIV infection, may yield false-negative results. In this scoping review, we evaluate the evidence and discuss alternative HIV testing algorithms that may mitigate diagnostic dilemmas in the setting of increased utilization of ART for immediate treatment and prevention of HIV infection. DISCUSSION Missed acute HIV infection prevents people living with HIV (PLHIV) from accessing early treatment, increases likelihood of onward transmission, and allows for inappropriate initiation or continuation of PrEP, which may result in HIV drug resistance. While immediate ART is recommended for all PLHIV, studies have shown that starting ART in the setting of acute HIV infection may result in a delayed or complete absence of development of HIV-specific antibodies, posing a diagnostic challenge that is particularly pertinent to resource-limited, high HIV burden settings where HIV-antibody POCTs are standard of care. Similarly, ART used as PrEP or PEP may supress HIV RNA viral load, complicating current HIV testing algorithms in resource-wealthy settings where viral detection is included. As rollout of PrEP continues, HIV testing algorithms may need to be modified. CONCLUSIONS With increasing use of PrEP and ART in acute infection we anticipate diagnostic challenges using currently available HIV testing strategies. Research and surveillance are needed to determine the most appropriate assays and optimal testing algorithms that are accurate, affordable and sustainable.
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Affiliation(s)
- Tamara Elliott
- Imperial College LondonLondonUnited Kingdom
- Imperial College Healthcare NHS TrustLondonUnited Kingdom
| | - Eduard J Sanders
- Kenya Medical Research Institute‐Wellcome Trust Research ProgrammeKilifiKenya
- Nuffield Department of MedicineUniversity of OxfordOxfordUnited Kingdom
| | - Meg Doherty
- Department of HIV and Global Hepatitis ProgrammeWHOGenevaSwitzerland
| | - Thumbi Ndung'u
- Africa Health Research InstituteDurbanSouth Africa
- HIV Pathogenesis ProgrammeDoris Duke Medical Research InstituteUniversity of KwaZulu‐NatalDurbanSouth Africa
- The Ragon Institute of Massachusetts General HospitalMassachusetts Institute of Technology and Harvard UniversityCambridgeMAUSA
- Max Planck Institute for Infection BiologyBerlinGermany
| | - Myron Cohen
- Department of Internal MedicineDivision of Infectious DiseasesUNC School of MedicineUniversity of North Carolina At Chapel HillChapel HillNCUSA
| | - Pragna Patel
- Division of Global HIV and TBCenters for Disease Control and PreventionAtlantaGAUSA
| | - Gus Cairns
- NAM AidsmapLondonUnited Kingdom
- PrEP in Europe InitiativeLondonUnited Kingdom
| | - Sarah E Rutstein
- Department of Internal MedicineDivision of Infectious DiseasesUNC School of MedicineUniversity of North Carolina At Chapel HillChapel HillNCUSA
| | - Jintanat Ananworanich
- U.S. Military HIV Research ProgramWalter Reed Army Institute of ResearchSilver SpringMDUSA
- Henry M. Jackson Foundation for the Advancement of Military MedicineBethesdaMDUSA
| | - Colin Brown
- National Infection Service, Public Health EnglandLondonUnited Kingdom
- Department of InfectionRoyal Free London NHS Foundation TrustLondonUnited Kingdom
| | - Sarah Fidler
- Imperial College LondonLondonUnited Kingdom
- Imperial College NIHR BRCLondonUnited Kingdom
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22
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Abstract
Clinical studies have demonstrated that use of tenofovir disoproxil fumarate with or without emtricitabine as antiretroviral pre-exposure prophylaxis (PrEP) can decrease the risk of human immunodeficiency virus (HIV) acquisition when medication adherence is high. However, the potential for PrEP to promote antiretroviral resistance remains an important public health consideration. We performed a search of the medical literature to identify studies that address HIV drug resistance during PrEP use. In this review, we summarize findings about emergent drug resistance during clinical trials of PrEP, case reports of seroconversions in patients adherent to PrEP, and animal studies of PrEP effectiveness against drug-resistant viral strains. We also discuss the potential utility of novel PrEP formulations for protection against drug-resistant HIV, the impact of drug resistance on HIV treatment options, and mathematical models that estimate the potential contribution of PrEP to population-level drug resistance. Evidence suggests that selection for HIV drug resistance with PrEP use is infrequent and most likely to occur when PrEP is used during undiagnosed acute HIV infection. Breakthrough infections during PrEP use with high adherence are possible, but appear to be rare. The prevalence of drug-resistant HIV strains needs to be monitored as PrEP is scaled up. However, the benefit of a decreased HIV incidence with wider PrEP use is likely to outweigh the risk of harms from possible increases in the prevalence of HIV drug resistance.
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Affiliation(s)
- Kevin M Gibas
- Division of Infectious Diseases, Beth Israel Deaconess Medical Center, 110 Francis St. W/LMOB, Suite GB, Boston, MA, 02215, USA
| | - Polly van den Berg
- Division of Infectious Diseases, Beth Israel Deaconess Medical Center, 110 Francis St. W/LMOB, Suite GB, Boston, MA, 02215, USA
| | - Victoria E Powell
- Division of Infectious Diseases, Beth Israel Deaconess Medical Center, 110 Francis St. W/LMOB, Suite GB, Boston, MA, 02215, USA
| | - Douglas S Krakower
- Division of Infectious Diseases, Beth Israel Deaconess Medical Center, 110 Francis St. W/LMOB, Suite GB, Boston, MA, 02215, USA.
- The Fenway Institute, Fenway Health, Boston, MA, USA.
- Department of Population Medicine, Harvard Medical School, Boston, MA, USA.
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23
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Colby DJ, Kroon E, Sacdalan C, Gandhi M, Grant RM, Phanuphak P, Ananworanich J, Robb ML, Phanuphak N. Acquisition of Multidrug-Resistant Human Immunodeficiency Virus Type 1 Infection in a Patient Taking Preexposure Prophylaxis. Clin Infect Dis 2019; 67:962-964. [PMID: 29961859 PMCID: PMC6117447 DOI: 10.1093/cid/ciy321] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 06/07/2018] [Indexed: 11/14/2022] Open
Abstract
We report a case indicating that acquisition of multidrug-resistant human immunodeficiency (HIV) virus type 1 during preexposure prophylaxis with combination tenofovir disoproxil fumarate and emtricitabine or evolution of resistance after HIV seroconversion remains a risk.
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Affiliation(s)
- Donn J Colby
- Thai Red Cross AIDS Research Centre, Bangkok, Thailand
| | - Eugene Kroon
- Thai Red Cross AIDS Research Centre, Bangkok, Thailand
| | | | | | | | | | - Jintanat Ananworanich
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring.,Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland
| | - Merlin L Robb
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring.,Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland
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24
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Grant RM, Mannheimer S, Hughes JP, Hirsch-Moverman Y, Loquere A, Chitwarakorn A, Curlin ME, Li M, Amico KR, Hendrix CW, Anderson PL, Dye BJ, Marzinke MA, Piwowar-Manning E, McKinstry L, Elharrar V, Stirratt M, Rooney JF, Eshleman SH, McNicholl JM, van Griensven F, Holtz TH. Daily and Nondaily Oral Preexposure Prophylaxis in Men and Transgender Women Who Have Sex With Men: The Human Immunodeficiency Virus Prevention Trials Network 067/ADAPT Study. Clin Infect Dis 2019; 66:1712-1721. [PMID: 29420695 DOI: 10.1093/cid/cix1086] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 01/24/2018] [Indexed: 11/14/2022] Open
Abstract
Background Nondaily dosing of oral preexposure prophylaxis (PrEP) may provide equivalent coverage of sex events compared with daily dosing. Methods At-risk men and transgender women who have sex with men were randomly assigned to 1 of 3 dosing regimens: 1 tablet daily, 1 tablet twice weekly with a postsex dose (time-driven), or 1 tablet before and after sex (event-driven), and were followed for coverage of sex events with pre- and postsex dosing measured by weekly self-report, drug concentrations, and electronic drug monitoring. Results From July 2012 to May 2014, 357 participants were randomized. In Bangkok, the coverage of sex events was 85% for the daily arm compared with 84% for the time-driven arm (P = .79) and 74% for the event-driven arm (P = .02). In Harlem, coverage was 66%, 47% (P = .01), and 52% (P = .01) for these groups. In Bangkok, PrEP medication concentrations in blood were consistent with use of ≥2 tablets per week in >95% of visits when sex was reported in the prior week, while in Harlem, such medication concentrations occurred in 48.5% in the daily arm, 30.9% in the time-driven arm, and 16.7% in the event-driven arm (P < .0001). Creatinine elevations were more common in the daily arm (P = .050), although they were not dose limiting. Conclusions Daily dosing recommendations increased coverage and protective drug concentrations in the Harlem cohort, while daily and nondaily regimens led to comparably favorable outcomes in Bangkok, where participants had higher levels of education and employment. Clinical Trials Registration NCT01327651.
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Affiliation(s)
- Robert M Grant
- Gladstone Institutes, University of California, San Francisco AIDS Foundation
| | - Sharon Mannheimer
- Harlem Hospital and Mailman School of Public Health, Columbia University, New York, New York
| | - James P Hughes
- University of Washington, Seattle, Washington.,Fred Hutchinson Cancer Research Center, Seattle, Washington
| | | | - Avelino Loquere
- ICAP, Mailman School of Public Health, Columbia University, New York, New York
| | | | - Marcel E Curlin
- Thailand Ministry of Public Health, Nonthaburi.,Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Maoji Li
- Fred Hutchinson Cancer Research Center, Seattle, Washington
| | | | | | | | | | | | | | | | | | | | | | | | - Janet M McNicholl
- Thailand Ministry of Public Health, Nonthaburi.,Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Frits van Griensven
- Thai Red Cross AIDS Research Center, Bangkok.,Division of Preventive Medicine, University of California, San Francisco
| | - Timothy H Holtz
- Thailand Ministry of Public Health, Nonthaburi.,Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
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25
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Hodges-Mameletzis I, Fonner VA, Dalal S, Mugo N, Msimanga-Radebe B, Baggaley R. Pre-Exposure Prophylaxis for HIV Prevention in Women: Current Status and Future Directions. Drugs 2019; 79:1263-1276. [PMID: 31309457 DOI: 10.1007/s40265-019-01143-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Pre-exposure prophylaxis (PrEP) is a promising intervention to prevent HIV acquisition, with benefits both to the individual and to population-level health. PrEP is an opportunity to complement ongoing public health efforts to eliminate HIV. For women, PrEP can also serve as a gateway to access sexual and reproductive health (SRH) services. Clinical efficacy of PrEP was initially reported in women using a 1% tenofovir vaginal gel in 2010, followed by an efficacy trial of oral PrEP using TDF/FTC in men who have sex with men (MSM). Since then, further trials have reported efficacy in oral PrEP containing tenofovir in women and heterosexual men, while the subsequent trials for women using tenofovir gel reported no efficacy, stemming from difficulties in achieving adequate adherence. In an effort to offer women additional choices to oral PrEP, alternative modalities are being tested in clinical research, including long-acting injectable formulations and intra-vaginal rings. In 2015, a meta-analysis of clinic trials and open-label extension studies led to the World Health Organization (WHO) strongly recommending the provision of oral PrEP containing tenofovir for any person at substantial risk of HIV infection, irrespective of gender or population group. Currently, PrEP services for women around the world, including those who are either pregnant or breastfeeding, remain limited. Outside sub-Saharan Africa, most PrEP programmes are focused on MSM. South Africa, Kenya, and the USA have the greatest utilization of oral PrEP by women. Yet, since 2012, of the estimated > 300,000 people globally who have initiated PrEP, a minority are women. In this narrative review, we examine the most recent literature on clinical and implementation PrEP research among women. We highlight the high burden of disease related to common sexually transmitted infections (STIs) in women, and the opportunity to integrate PrEP and other HIV prevention services, STI case management, and family planning services, as part of a more robust package of SRH services. Raising awareness on PrEP amongst women and their healthcare providers, minimizing gaps in access, and ensuring adherence and persistence of PrEP during periods of risk are critical issues if PrEP can have a meaningful impact on reducing HIV incidence in women globally.
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Affiliation(s)
| | | | - Shona Dalal
- World Health Organization, Geneva, Switzerland
| | - Nelly Mugo
- University of Washington/Kenya Medical Research Institute, Nairobi, Kenya
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26
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Ojeda VD, Amico KR, Hughes JP, Wilson E, Li M, Holtz TH, Chitwarakorn A, Grant RM, Dye B, Bekker LG, Mannheimer S, Marzinke M, Hendrix CW. Low Disclosure of PrEP Nonadherence and HIV-Risk Behaviors Associated With Poor HIV PrEP Adherence in the HPTN 067/ADAPT Study. J Acquir Immune Defic Syndr 2019; 82:34-40. [PMID: 31169769 PMCID: PMC6698708 DOI: 10.1097/qai.0000000000002103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE We evaluated the relationship between 2 types of social relationships, ie, (1) external support for use of HIV pre-exposure prophylaxis (PrEP) and related study supplies and (2) participants' disclosure of PrEP use and condom use and HIV PrEP adherence among daily-dosing regimen participants in HIV Prevention Trials Network (HPTN) 067, an open-label trial of oral tenofovir (TFV) disoproxil fumarate (TDF) 300 mg/emtricitabine (FTC) 200 mg. METHODS Using HPTN 067 survey data, we developed scales examining (1) Low Perceived External Support for PrEP: low perceived support by others for PrEP use or perceived negative reactions to the pill case (scoring ranges from 0 to 2) and (2) Participant-Staff Disclosure Challenges Scale, which identifies challenges to sharing nonuse of PrEP or condoms to study staff (scoring ranges from 0 to 4); these scales are the primary independent variables. Adherence, the dependent variable, was determined using log-transformed plasma TFV concentrations. generalized estimating equation (GEE) linear regression was used to assess the association between both scales and adherence. RESULTS Participants (n = 161) included HIV-uninfected women in South Africa, and men who have sex with men and transgender women, in Thailand and the United States. In multivariable analyses, higher scores in the Participant-Staff Disclosure Challenges Scale were significantly associated with lower PrEP adherence [exp(β) = 0.62, 95% CI: (0.46 to 0.84); P = 0.002] as were increased days since the last PrEP dose [exp(β) = 0.73, 95% CI: (0.65 to 0.83); P ≤ 0.001]. CONCLUSIONS Given the association with adherence, study staff-participant interactions and participants' disclosure of PrEP challenges may be worthwhile intervention targets for improving PrEP adherence in confirmatory studies.
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Affiliation(s)
- Victoria D. Ojeda
- Department of Medicine, UCSD School of Medicine, La Jolla,
California, United States
| | - K. Rivet Amico
- Department of Health Behavior and Health Education,
University of Michigan, Ann Arbor, Michigan, United States
| | - James P. Hughes
- Department of Biostatistics, University of Washington,
Seattle, Washington, United States
| | - Ethan Wilson
- Statistical Center for AIDS Research and Prevention, Fred
Hutchinson Cancer Research Center, Seattle, USA
| | - Maoji Li
- Statistical Center for AIDS Research and Prevention, Fred
Hutchinson Cancer Research Center, Seattle, USA
| | - Timothy H. Holtz
- Thailand Ministry of Public Health – U.S. Centers
for Disease Control and Prevention Collaboration, Nonthaburi, Thailand
- Division of HIV/AIDS Prevention, U.S. Centers for Disease
Control and Prevention, Atlanta, Georgia, United States
| | | | - Robert M. Grant
- Gladstone Institutes, University of California, San
Francisco, California, United States
| | - Bonnie Dye
- HIV Prevention Trials Network, FHI 360, Durham, North
Carolina, United States
| | - Linda-Gail Bekker
- The Desmond Tutu HIV Centre, University of Cape Town,
Cape Town, South Africa
| | - Sharon Mannheimer
- Department of Medicine, Harlem Hospital Center, New
York, New York, United States
- Department of Epidemiology, Columbia University Mailman
School of Public Health, New York, New York, United States
- ICAP, Columbia University Mailman School of Public
Health, New York, New York, United States
| | - Mark Marzinke
- Dept. of Pathology, Johns Hopkins University School of
Medicine, Baltimore, MD USA
- Department of Medicine (Clinical Pharmacology), Johns
Hopkins University, Baltimore, Maryland, USA
| | - Craig W. Hendrix
- Department of Medicine (Clinical Pharmacology), Johns
Hopkins University, Baltimore, Maryland, USA
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27
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Straub DM, Mullins TLK. Nonoccupational Postexposure Prophylaxis and Preexposure Prophylaxis for Human Immunodeficiency Virus Prevention in Adolescents and Young Adults. Adv Pediatr 2019; 66:245-261. [PMID: 31230697 DOI: 10.1016/j.yapd.2019.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Diane M Straub
- Division of Adolescent Medicine, University of South Florida, 2 Tampa General Circle, Suite 500, Tampa, FL 33606, USA.
| | - Tanya L Kowalczyk Mullins
- Division of Adolescent and Transition Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 4000, Cincinnati, OH 45229, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
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28
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Rossenkhan R, Rolland M, Labuschagne JPL, Ferreira RC, Magaret CA, Carpp LN, Matsen Iv FA, Huang Y, Rudnicki EE, Zhang Y, Ndabambi N, Logan M, Holzman T, Abrahams MR, Anthony C, Tovanabutra S, Warth C, Botha G, Matten D, Nitayaphan S, Kibuuka H, Sawe FK, Chopera D, Eller LA, Travers S, Robb ML, Williamson C, Gilbert PB, Edlefsen PT. Combining Viral Genetics and Statistical Modeling to Improve HIV-1 Time-of-infection Estimation towards Enhanced Vaccine Efficacy Assessment. Viruses 2019; 11:E607. [PMID: 31277299 PMCID: PMC6669737 DOI: 10.3390/v11070607] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/19/2019] [Accepted: 06/27/2019] [Indexed: 12/16/2022] Open
Abstract
Knowledge of the time of HIV-1 infection and the multiplicity of viruses that establish HIV-1 infection is crucial for the in-depth analysis of clinical prevention efficacy trial outcomes. Better estimation methods would improve the ability to characterize immunological and genetic sequence correlates of efficacy within preventive efficacy trials of HIV-1 vaccines and monoclonal antibodies. We developed new methods for infection timing and multiplicity estimation using maximum likelihood estimators that shift and scale (calibrate) estimates by fitting true infection times and founder virus multiplicities to a linear regression model with independent variables defined by data on HIV-1 sequences, viral load, diagnostics, and sequence alignment statistics. Using Poisson models of measured mutation counts and phylogenetic trees, we analyzed longitudinal HIV-1 sequence data together with diagnostic and viral load data from the RV217 and CAPRISA 002 acute HIV-1 infection cohort studies. We used leave-one-out cross validation to evaluate the prediction error of these calibrated estimators versus that of existing estimators and found that both infection time and founder multiplicity can be estimated with improved accuracy and precision by calibration. Calibration considerably improved all estimators of time since HIV-1 infection, in terms of reducing bias to near zero and reducing root mean squared error (RMSE) to 5-10 days for sequences collected 1-2 months after infection. The calibration of multiplicity assessments yielded strong improvements with accurate predictions (ROC-AUC above 0.85) in all cases. These results have not yet been validated on external data, and the best-fitting models are likely to be less robust than simpler models to variation in sequencing conditions. For all evaluated models, these results demonstrate the value of calibration for improved estimation of founder multiplicity and of time since HIV-1 infection.
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Affiliation(s)
- Raabya Rossenkhan
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Morgane Rolland
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Jan P L Labuschagne
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
- South African Medical Research Council Bioinformatics Unit, South African National Bioinformatics Institute, University of the Western Cape, Cape Town 7535, South Africa
| | - Roux-Cil Ferreira
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Craig A Magaret
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Lindsay N Carpp
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Frederick A Matsen Iv
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Yunda Huang
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Erika E Rudnicki
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Yuanyuan Zhang
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Nonkululeko Ndabambi
- Department of Pathology, Faculty of Health Sciences, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7925, South Africa
| | - Murray Logan
- Department of Pathology, Faculty of Health Sciences, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7925, South Africa
| | - Ted Holzman
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Melissa-Rose Abrahams
- Department of Pathology, Faculty of Health Sciences, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7925, South Africa
| | - Colin Anthony
- Department of Pathology, Faculty of Health Sciences, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7925, South Africa
| | - Sodsai Tovanabutra
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Christopher Warth
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Gordon Botha
- Department of Pathology, Faculty of Health Sciences, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7925, South Africa
| | - David Matten
- Department of Pathology, Faculty of Health Sciences, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7925, South Africa
| | - Sorachai Nitayaphan
- Armed Forces Research Institute of Medical Sciences, Bangkok 10400, Thailand
| | - Hannah Kibuuka
- Makerere University Walter Reed Project, Kampala, Uganda
| | - Fred K Sawe
- Kenya Medical Research Institute/U.S. Army Medical Research Directorate-Africa/Kenya-Henry Jackson Foundation MRI, Kericho 20200, Kenya
| | - Denis Chopera
- Sub-Saharan African Network for TB/HIV Research Excellence (SANTHE), Africa Health Research Institute, Durban 4001, South Africa
| | - Leigh Anne Eller
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Simon Travers
- South African Medical Research Council Bioinformatics Unit, South African National Bioinformatics Institute, University of the Western Cape, Cape Town 7535, South Africa
| | - Merlin L Robb
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Carolyn Williamson
- Department of Pathology, Faculty of Health Sciences, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7925, South Africa
| | - Peter B Gilbert
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
- Department of Biostatistics, University of Washington, Seattle, WA 98195, USA
| | - Paul T Edlefsen
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.
- Department of Biostatistics, University of Washington, Seattle, WA 98195, USA.
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29
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Positive or Not, That Is the Question: HIV Testing for Individuals on Pre-exposure Prophylaxis. J Acquir Immune Defic Syndr 2019; 78:e11-e13. [PMID: 29481487 DOI: 10.1097/qai.0000000000001665] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Minority and majority pretreatment HIV-1 drug resistance associated with failure of first-line nonnucleoside reverse-transcriptase inhibitor antiretroviral therapy in Kenyan women. AIDS 2019; 33:941-951. [PMID: 30946148 DOI: 10.1097/qad.0000000000002134] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES Among women initiating first-line nonnucleoside reverse-transcriptase inhibitor (NNRTI)-based-ART with and without a history of single-dose nevirapine (sdNVP) with or without zidovudine with or without lamivudine (ZDV with and without 3TC) for prevention of mother-to-child HIV transmission (PMTCT), we hypothesized that pre-ART HIV-drug resistance would be associated with virologic failure DESIGN/METHODS:: In a prospectively enrolled study, three genotypic drug-resistance assays [oligonucleotide-ligation-assay (OLA), consensus sequencing, and next-generation sequencing by Illumina] were retrospectively performed to detect pre-ART drug resistance. Minority or majority drug-resistant variants identified in pre-ART RNA and/or DNA, a history of antiretrovirals for PMTCT, and other risk factors were assessed for association with virologic failure. RESULTS Failure occurred in 38/169 (22.5%) women, and was associated with pre-ART drug resistance detected by any assay (OLA of plasma or PBMC, consensus sequencing of PBMC and/or plasma, and next-generation sequencing of PBMC at frequencies of at least 10% and as minority variants; all P < 0.0001). Failure was also associated with PMTCT using sdNVP and ZDV with or without 3TC, but not sdNVP only; however, the longer time-interval between PMTCT and ART initiation observed for sdNVP-only women showed no interaction with failure. Viral loads and OLA of PBMC in longitudinal specimens demonstrated rapid failure and emergence of drug resistance, particularly among sdNVP and ZDV with or without 3TC-experienced women with pre-ART drug-resistant minority variants by next-generation sequencing but without drug resistance by OLA or consensus sequencing. CONCLUSION Pre-ART drug resistance was detected similarly by OLA of PBMC or plasma and by consensus sequencing, and was associated with virologic failure soon after initiation of first-line NVP-based ART. A history of sdNVP and ZDV with or without 3TC for PMTCT or minority variants detected by next-generation sequencing identified additional women with failure. These findings emphasize the value of assessing individual antiretroviral history, particularly nonsuppressive antiretrovirals with at least two drug classes, and testing for pre-ART drug resistance, including minority variants.
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31
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Cossarini F, Hanna DB, Ginsberg MS, Blackstock OJ, Anastos K, Felsen UR. Missed Opportunities for HIV Prevention: Individuals Who HIV Seroconverted Despite Accessing Healthcare. AIDS Behav 2018; 22:3519-3524. [PMID: 29797162 PMCID: PMC6204105 DOI: 10.1007/s10461-018-2162-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Individuals with a negative HIV test before a positive one (seroconverters) may represent missed opportunities for prevention. To inform HIV prevention strategies, we aimed to characterize patients who seroconverted despite accessing care. We identified patients at a large, urban healthcare system who seroconverted between 2009 and 2014. Demographics, visits, and HIV-related variables were extracted from the medical records. We performed descriptive statistics, assessed for trends, and tested for associations according to sex. 220 seroconverters were identified: 45% were female, 87% were non-Hispanic Black or Hispanic, and median number of negative tests prior to diagnosis was 2 (IQR 1-3). Overall, 49% reported heterosexual contact as their risk factor and the proportion with heterosexual risk increased over time (24% in 2009 vs. 56% in 2014, p = 0.03). Compared to men, women were older at the time of diagnosis (35 vs. 26 years old, p < 0.01), had more visits between their latest negative and positive HIV test (4 vs. 2, p < 0.01), and were more likely to be diagnosed in the context of screening (64% vs. 56%, p = 0.05). We identified a population that became HIV-infected despite multiple healthcare encounters and undergoing HIV testing multiple times. Patients were mostly heterosexual and almost half were female. To avoid missed opportunities for those already accessing care, HIV prevention efforts should include strategies tailored to individuals with less frequently recognized risk profiles.
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Affiliation(s)
| | - David B Hanna
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Mindy S Ginsberg
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Oni J Blackstock
- Department of Medicine, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY, USA
| | - Kathryn Anastos
- Department of Medicine, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY, USA
| | - Uriel R Felsen
- Department of Medicine, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY, USA
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Abstract
BACKGROUND The IPERGAY ANRS trial showed that on-demand preexposure prophylaxis (PrEP) with tenofovir (TDF) and emtricitabine (FTC) was highly effective in preventing HIV infection among highly exposed MSM. Here, we analyzed drug resistance-associated mutations (RAMs) among all participants who acquired HIV infection during this trial. METHODS Resistance was analyzed on frozen plasma at the time of HIV diagnosis among participants enrolled in the double-blind and open-label phases of the ANRS IPERGAY trial. Reverse transcriptase sequencing was performed, using population-based and ultradeep sequencing (454 GS Flex). Adherence was measured by pill counting and by plasma tenofovir and FTC assay. RESULTS During the trial, 31 participants were diagnosed with HIV-1 infection (subtype B, 64.5%), using antigen/antibody immune assay in 29 cases and plasma HIV RNA assay in two. The median plasma HIV-1 RNA level was 5.52 log10 copies/ml. Drug resistance was tested in 12 participants before starting PrEP, in six assigned to TDF/FTC group and in 13 assigned to placebo group. Primary resistance to nucleoside reverse transcriptase inhibitors (zidovudine) and/or nonnucleoside reverse transcriptase inhibitors was detected in six participants (19%; 95% confidence interval 7-42). No major or minor TDF-resistant or FTC-resistant variants were detected. CONCLUSION No TDF or FTC resistance-associated mutations were found among participants who acquired HIV in the ANRS IPERGAY trial.
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Underhill K, Guthrie KM, Colleran C, Calabrese SK, Operario D, Mayer KH. Temporal Fluctuations in Behavior, Perceived HIV Risk, and Willingness to Use Pre-Exposure Prophylaxis (PrEP). ARCHIVES OF SEXUAL BEHAVIOR 2018; 47:2109-2121. [PMID: 29327091 PMCID: PMC6041197 DOI: 10.1007/s10508-017-1100-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Revised: 07/25/2017] [Accepted: 10/11/2017] [Indexed: 06/07/2023]
Abstract
Individual perceptions of HIV risk influence willingness to use pre-exposure prophylaxis (PrEP) for HIV prevention. Among men who have sex with men (MSM) and male sex workers (MSWs), temporal or episodic changes in risk behavior may influence perceived risk and PrEP acceptability over time. We investigated fluctuations in perceived HIV risk and PrEP acceptability, comparing MSWs against MSM who do not engage in sex work. We conducted 8 focus groups (n = 38) and 56 individual interviews among MSM and MSWs in Providence, RI. Perceived HIV risk shaped willingness to use PrEP among both MSWs and MSM who did not engage in sex work, and risk perceptions changed over time depending on behavior. For MSWs, perceived risk cycled according to patterns of substance use and sex work activity. These cycles yielded an "access-interest paradox": an inverse relationship between willingness to use and ability to access PrEP. MSM who did not engage in sex work also reported temporal shifts in risk behavior, perceived risk, and willingness to use PrEP, but changes were unrelated to access. MSM attributed fluctuations to seasonal changes, vacations, partnerships, behavioral "phases," and episodic alcohol or drug use. Efforts to implement PrEP among MSM and street-based MSWs should address temporal changes in willingness to use PrEP, which are linked to perceived risk. Among MSWs, confronting the access-interest paradox may require intensive outreach during high-risk times and efforts to address low perceived risk during times of reduced sex work.
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Affiliation(s)
- Kristen Underhill
- Columbia Law School, Columbia University, 435 W 116th St., New York, NY, 10027, USA.
- Heilbrunn Department of Population and Family Health, Mailman School of Public Health, Columbia University, New York, NY, USA.
| | - Kate M Guthrie
- Centers for Behavioral and Preventive Medicine, The Miriam Hospital, Providence, RI, USA
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School, Brown University, Providence, RI, USA
| | - Christopher Colleran
- Centers for Behavioral and Preventive Medicine, The Miriam Hospital, Providence, RI, USA
| | - Sarah K Calabrese
- Department of Psychology, George Washington University, Washington, DC, USA
| | - Don Operario
- School of Public Health, Brown University, Providence, RI, USA
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Dashwood T, Tan DHS. PrEParing for the unexpected: mechanisms and management of HIV pre-exposure prophylaxis failure. Future Virol 2018. [DOI: 10.2217/fvl-2018-0084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pre-exposure prophylaxis (PrEP) for HIV is a proven and effective tool for preventing HIV. However, there are instances where individuals taking PrEP have contracted HIV infection. Most of these cases are due to nonadherence to the drug, while other cases of apparent PrEP failure are due to unrecognized HIV infection at baseline. Importantly, there are also now at least three well-documented cases of PrEP failing despite adequate adherence; these are cases of PrEP ‘breakthrough’. This article outlines the potential mechanisms of PrEP failure, as well as how to identify and manage these patients. Finally, we provide a perspective on the future of PrEP as a key tool in preventing HIV worldwide.
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Affiliation(s)
- Thomas Dashwood
- Department of Medicine, University of Toronto, Toronto, ON M5G 2C4, Canada
| | - Darrell HS Tan
- Department of Medicine, University of Toronto, Toronto, ON M5G 2C4, Canada
- Division of Infectious Diseases, St Michael's Hospital, Toronto, ON M5B 1W8, Canada
- Centre for Urban Health Solutions, St Michael's Hospital, Toronto, ON M5B 1W8, Canada
- Institute for Health Policy, Management & Evaluation, University of Toronto, Toronto, ON M5T 3M6, Canada
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Smith DK, Switzer WM, Peters P, Delaney KP, Granade TC, Masciotra S, Shouse L, Brooks JT. A Strategy for PrEP Clinicians to Manage Ambiguous HIV Test Results During Follow-up Visits. Open Forum Infect Dis 2018; 5:ofy180. [PMID: 30568989 DOI: 10.1093/ofid/ofy180] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 07/19/2018] [Indexed: 11/12/2022] Open
Abstract
Prompt determination of HIV infection status is critical during follow-up visits for patients taking pre-exposure prophylaxis (PrEP) medication. Those who are uninfected can then continue safely taking PrEP, and those few who have acquired HIV infection can initiate an effective treatment regimen. However, a few recent cases have been reported of ambiguous HIV test results using common testing algorithms in PrEP patients. We review published reports of such cases and testing options that can be used to clarify true HIV status in these situations. In addition, we review the benefits and risks of 3 antiretroviral management options in these patients: (1) continue PrEP while conducting additional HIV tests, (2) initiate antiretroviral therapy for presumptive HIV infection while conducting confirmatory tests, or (3) discontinue PrEP to reassess HIV status after a brief antiretroviral-free interval. A clinical consultation resource is also provided.
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Affiliation(s)
- Dawn K Smith
- Division of HIV/AIDS Prevention, National Center for HIV, Viral Hepatitis, STD, Atlanta, Georgia.,TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - William M Switzer
- Division of HIV/AIDS Prevention, National Center for HIV, Viral Hepatitis, STD, Atlanta, Georgia.,TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Philip Peters
- Division of HIV/AIDS Prevention, National Center for HIV, Viral Hepatitis, STD, Atlanta, Georgia.,TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Kevin P Delaney
- Division of HIV/AIDS Prevention, National Center for HIV, Viral Hepatitis, STD, Atlanta, Georgia.,TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Timothy C Granade
- Division of HIV/AIDS Prevention, National Center for HIV, Viral Hepatitis, STD, Atlanta, Georgia.,TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Silvina Masciotra
- Division of HIV/AIDS Prevention, National Center for HIV, Viral Hepatitis, STD, Atlanta, Georgia.,TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Luke Shouse
- Division of HIV/AIDS Prevention, National Center for HIV, Viral Hepatitis, STD, Atlanta, Georgia.,TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - John T Brooks
- Division of HIV/AIDS Prevention, National Center for HIV, Viral Hepatitis, STD, Atlanta, Georgia.,TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
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Bekker LG, Roux S, Sebastien E, Yola N, Amico KR, Hughes JP, Marzinke MA, Hendrix CW, Anderson PL, Elharrar V, Stirratt M, Rooney JF, Piwowar-Manning E, Eshleman SH, McKinstry L, Li M, Dye BJ, Grant RM. Daily and non-daily pre-exposure prophylaxis in African women (HPTN 067/ADAPT Cape Town Trial): a randomised, open-label, phase 2 trial. Lancet HIV 2018; 5:e68-e78. [PMID: 28986029 PMCID: PMC6107917 DOI: 10.1016/s2352-3018(17)30156-x] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 06/30/2017] [Accepted: 07/13/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND The relative feasibility and acceptability of daily versus non-daily dosing of oral HIV pre-exposure prophylaxis (PrEP) among women are unknown. We aimed to investigate the feasibility of non-daily PrEP regimens in adult women. METHODS We did a randomised, open-label, phase 2 clinical trial (HPTN 067/ADAPT) of oral PrEP with emtricitabine plus tenofovir disoproxil fumarate at a research centre in Cape Town, South Africa. Participants were adult women (age ≥18 years) who received directly observed dosing once a week for 5 weeks followed by random assignment (1:1:1) at week 6 to one of three unblinded PrEP regimens for self-administered dosing over 24 weeks: daily; time-driven (twice a week plus a post-sex dose); or event-driven (one tablet both before and after sex). Primary outcomes were PrEP coverage (at least one dose within the 4 days before sex and one dose within 24 h after sex), pills needed or used to achieve regimen-specific adherence and coverage, and symptoms and side-effects. All analyses were by intention to treat. This trial is registered with ClinicalTrials.gov, number NCT01327651; the trial is completed and this report presents the final analysis. FINDINGS Between Sept 12, 2011, and Oct 3, 2012, 191 women were enrolled to the trial. 178 (93%) completed directly observed dosing and were randomly assigned one of the three PrEP regimens for the self-administered phase: 59 were allocated the daily regimen, 59 the time-driven regimen, and 60 the event-driven regimen. Median age of women was 26 years (IQR 21-37; range 18-52). In women allocated the daily regimen, 1459 (75%) of 1952 sex events were covered by PrEP, compared with 599 (56%) of 1074 sex events among those assigned the time-driven regimen (odds ratio [OR] 2·35, 95% CI 1·43-3·83; p=0·0007) and 798 (52%) of 1542 sex events among those allotted the event-driven regimen (2·76, 1·68-4·53; p<0·0001). Fewer pills were needed for complete adherence in women allocated non-daily regimens (vs daily regimen, relative mean 2·53 [95% CI 2·39-2·69] for the time-driven regimen and 4·16 [3·59-4·82] for the event-driven regimen; p<0·0001). Side-effects were uncommon. Eight HIV seroconversions occurred overall, with four documented during the self-administered phase (two with the time-driven regimen and two with the event-driven regimen). Adherence to the assigned regimen was 75% (7283 of 9652 doses taken) for women allocated the daily regimen compared with 65% for those assigned the time-driven regimen (2367 of 3616 doses taken; p=0·0028) and 53% for those allotted the event-driven regimen (1161 of 2203 doses taken; p<0·0001). When sex was reported in the previous week, PrEP drugs were detected (above the lower limits of quantification) more frequently in women assigned the daily regimen (73 [68%] of 107 samples) than in those allocated the time-driven regimen (42 [58%] of 72 samples) and the event-driven regimen (41 [41%] of 99 samples). INTERPRETATION Daily PrEP dosing resulted in higher coverage of sex events, increased adherence to the regimen, and augmented drug concentrations than did either time-driven or event-driven dosing. These findings support recommendations for daily use of PrEP with oral emtricitabine plus tenofovir disoproxil fumarate in women. FUNDING HIV Prevention Trials Network.
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Affiliation(s)
- Linda-Gail Bekker
- The Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa.
| | - Surita Roux
- Synexus Clinical Research SA, Somerset West, Cape Town, South Africa
| | - Elaine Sebastien
- The Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa
| | - Ntando Yola
- The Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa
| | - K Rivet Amico
- School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - James P Hughes
- Department of Biostatistics, University of Washington, Seattle, WA, USA; Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Mark A Marzinke
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA; Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Craig W Hendrix
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Peter L Anderson
- Department of Pharmaceutical Sciences, University of Colorado, Aurora, CO, USA
| | - Vanessa Elharrar
- Division of AIDS, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD USA
| | - Michael Stirratt
- Division of AIDS Research, National Institute of Mental Health, National Institutes of Health, Bethesda, MD USA
| | | | | | - Susan H Eshleman
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | | | - Maoji Li
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | | | - Robert M Grant
- Gladstone Institutes, University of California, and San Francisco AIDS Foundation, San Francisco, CA, USA
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Performance of the BioPlex 2200 HIV Ag-Ab assay for identifying acute HIV infection. J Clin Virol 2018; 99-100:67-70. [PMID: 29346085 DOI: 10.1016/j.jcv.2018.01.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 01/10/2018] [Indexed: 11/21/2022]
Abstract
BACKGROUND Assays that detect HIV antigen (Ag) and antibody (Ab) can be used to screen for HIV infection. OBJECTIVES To compare the performance of the BioPlex 2200 HIV Ag-Ab assay and two other Ag/Ab combination assays for detection of acute HIV infection. STUDY DESIGN Samples were obtained from 24 individuals (18 from the US, 6 from South Africa); these individuals were classified as having acute infection based on the following criteria: positive qualitative RNA assay; two negative rapid tests; negative discriminatory test. The samples were tested with the BioPlex assay, the ARCHITECT HIV Ag/Ab Combo test, the Bio-Rad GS HIV Combo Ag-Ab EIA test, and a viral load assay. RESULTS Twelve (50.0%) of 24 samples had RNA detected only ( > 40 to 13,476 copies/mL). Ten (43.5%) samples had reactive results with all three Ag/Ab assays, one sample was reactive with the ARCHITECT and Bio-Rad assays, and one sample was reactive with the Bio-Rad and BioPlex assays. The 11 samples that were reactive with the BioPlex assay had viral loads from 83,010 to >750,000 copies/mL; 9/11 samples were classified as Ag positive/Ab negative by the BioPlex assay. CONCLUSIONS Detection of acute HIV infection was similar for the BioPlex assay and two other Ag/Ab assays. All three tests were less sensitive than a qualitative RNA assay and only detected HIV Ag when the viral load was high. The BioPlex assay detected acute infection in about half of the cases, and identified most of those infections as Ag positive/Ab negative.
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Abstract
Although pre-exposure prophylaxis (PrEP)-the use of antiretroviral drugs by non-infected people to prevent the acquisition of HIV-is a promising preventive option, important public health questions remain. Daily oral emtricitabine (FTC)-tenofovir disoproxil fumarate (TDF) is highly efficacious in preventing the acquisition of HIV in people at risk as a result of a range of different types of sexual exposure. There is good evidence of efficacy in women and men, and when men who have sex with men use event based dosing. Studies have been conducted in several countries and epidemics. Because adherence to this treatment varies greatly there are questions about its public health benefit. Oral FTC-TDF is extremely safe, with minimal impact on kidney, bone, or pregnancy outcomes, and there is no evidence that its effectiveness has been reduced by risk compensation during open label and programmatic follow-up. It is too early to assess the impact of this treatment on the incidence of sexually transmitted infections (STIs) at a population level. Many challenges remain. Access to pre-exposure prophylaxis is limited and disparities exist, including those governed by race and sex. Different pricing and access models need to be explored to avoid further widening inequalities. The optimal combination prevention program needs to be defined, and this will depend on local epidemiology, service provision, and cost effectiveness. This review updates the evidence base for pre-exposure prophylaxis regarding its effectiveness, safety, and risk compensation.
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Affiliation(s)
- Monica Desai
- HIV and STI Department, Public Health England, London NW9 5EQ, UK
| | - Nigel Field
- Centre for Molecular Epidemiology and Translational Research, University College London, London WC1E 6BT, UK
| | - Robert Grant
- University of California School of Medicine; Gladstone Institutes; San Francisco AIDS Foundation, San Francisco, CA 94115, USA
| | - Sheena McCormack
- MRC Clinical Trials Unit, University College London, London
- Chelsea and Westminster Hospital, London SW10 9BH
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A public health approach to addressing and preventing misdiagnosis in the scale-up of HIV rapid testing programmes. J Int AIDS Soc 2017. [DOI: 10.7448/ias.20.7.22290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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40
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Olaru ID, McHugh G, Dakshina S, Majonga E, Dauya E, Bandason T, Kranzer K, Mujuru H, Ferrand RA. False-negative HIV tests using oral fluid tests in children taking antiretroviral therapy from Harare, Zimbabwe. J Int AIDS Soc 2017; 20:21751. [PMID: 28872275 PMCID: PMC5625634 DOI: 10.7448/ias.20.7.21751] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 06/08/2017] [Indexed: 11/08/2022] Open
Abstract
INTRODUCTION Rapid diagnostic tests (RDT) for HIV infection have high sensitivity and specificity, but in the setting of longstanding antiretroviral therapy (ART), can give false results that can lead to misinterpretation, confusion and inadequate management. The objective of this study was to evaluate the proportion of falsely negative results of a RDT performed on oral fluid in HIV-infected children on longstanding ART. METHODS One hundred and twenty-nine children with known HIV infection and receiving ART were recruited from the HIV Clinic at the Harare Central Hospital, Zimbabwe. HIV testing was performed on oral fluid and on finger-stick blood. RESULTS AND DISCUSSION Children included in the study had a median age of 12 years (IQR 10-14) and 67 (51.9%) were female. Median age at HIV diagnosis was 5 years (IQR 3-6) and the median time on ART was 6.3 years (IQR 4.3-8.1). The oral fluid test was negative in 11 (8.5%) patients and indeterminate in 2 (1.6%). Finger-stick blood test was negative in 1 patient. Patients with a negative oral fluid test had a higher CD4 cell count (967 vs. 723 cells/mm3, p = 0.016) and a longer time on ART (8.5 vs. 6 years, p = 0.016). CONCLUSIONS This study found that a substantial proportion of false-negative HIV test results in children on longstanding ART when using an oral fluid test. This could lead to misinterpretation of HIV test results and in the false perception of cure or delayed diagnosis.
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Affiliation(s)
- Ioana D. Olaru
- Division of Clinical Infectious Diseases, Research Center Borstel, Borstel, Germany
| | - Grace McHugh
- Biomedical Research and Training Institute, Harare, Zimbabwe
| | - Suba Dakshina
- Biomedical Research and Training Institute, Harare, Zimbabwe
| | - Edith Majonga
- Biomedical Research and Training Institute, Harare, Zimbabwe
- Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, UK
| | - Ethel Dauya
- Biomedical Research and Training Institute, Harare, Zimbabwe
| | - Tsitsi Bandason
- Biomedical Research and Training Institute, Harare, Zimbabwe
| | - Katharina Kranzer
- Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, UK
| | - Hilda Mujuru
- Department of Paediatrics, University of Zimbabwe, Harare, Zimbabwe
| | - Rashida A. Ferrand
- Biomedical Research and Training Institute, Harare, Zimbabwe
- Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, UK
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