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Vera J, Gomes A, Póvoas D, Seixas D, Maltez F, Pedroto I, Maia L, Mota M, Vieira MJ, Manata MJ, Ferreira P, Lino S, Pereira Guedes T, Barradas V, Marques N. Real-World Effectiveness and Safety of Glecaprevir/Pibrentasvir for the Treatment of Chronic Hepatitis C: A Prospective Cohort Study in Portugal. ACTA MEDICA PORT 2024; 37:323-333. [PMID: 38325411 DOI: 10.20344/amp.19178] [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: 12/22/2022] [Accepted: 06/02/2023] [Indexed: 02/09/2024]
Abstract
INTRODUCTION Information about pan-genotypic treatments for hepatitis in Portugal is scarce. We aimed to evaluate the effectiveness and safety of glecaprevir plus pibrentasvir (GLE/PIB) treatment for hepatitis C virus (HCV) infection in real-world clinical practice. METHODS An observational prospective study was implemented in six hospitals with 121 adult HCV patients who initiated treatment with GLE/PIB between October 2018 and April 2019, according to clinical practice. Eligible patients had confirmed HCV infection genotype (GT) 1 to 6 and were either treatment-naïve or had experience with interferon-, ribavirin- or sofosbuvir-based regimens, with or without compensated cirrhosis. Baseline sociodemographic and safety data are described for the total population (N = 115). Effectiveness [sustained virologic response 12 weeks after treatment (SVR12)] and patient-reported outcomes are presented for the core population with sufficient follow-up data (n = 97). RESULTS Most patients were male (83.5%), aged < 65 years (94.8%), with current or former alcohol consumption (77.3%), illicit drug use (72.6%), and HCV acquisition through intravenous drug use (62.0%). HIV co-infection occurred in 22.6% of patients. The prevalence of each GT was: GT1 51.3%, GT2 1.7%, GT3 30.4%, GT4 16.5%, and GT5.6 0%. Most patients were non-cirrhotic (80.9%) and treatment-naïve (93.8%). The SVR12 rates were 97.9% (95% CI: 92.8 - 99.4), and > 95% across cirrhosis status, GT, illicit drug use, alcohol consumption, and HCV treatment experience. The adverse event rate was 2.6%, and no patient discontinued treatment due to adverse events related to GLE/PIB. CONCLUSION Consistent with other real-world studies and clinical trials, treatment with GLE/PIB showed high effectiveness and tolerability overall and in difficult-to-treat subgroups (ClinicalTrials.gov: NCT03303599).
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Affiliation(s)
- José Vera
- Centro Hospitalar Barreiro-Montijo. Barreiro. Portugal
| | | | - Diana Póvoas
- Centro Hospitalar Lisboa Central. Lisboa. Portugal
| | - Diana Seixas
- Centro Hospitalar Lisboa Central. Lisboa. Portugal
| | | | | | - Luís Maia
- Centro Hospitalar Universitário Porto. Porto. Portugal
| | - Margarida Mota
- Centro Hospitalar Vila Nova de Gaia/Espinho. Vila Nova de Gaia. Portugal
| | | | | | | | - Sara Lino
- Centro Hospitalar Lisboa Central. Lisboa. Portugal
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Ramos D, Pinto M, Sousa Coutinho R, Silva C, Quina M, Gomes JP, Pádua E. Looking at the Molecular Target of NS5A Inhibitors throughout a Population Highly Affected with Hepatitis C Virus. Pathogens 2023; 12:754. [PMID: 37375444 DOI: 10.3390/pathogens12060754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/18/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
Hepatitis C virus (HCV) is associated with liver damage and an increased progression rate to cirrhosis and hepatocellular carcinoma. In Portugal, it is prevalent in vulnerable populations such as injection drug users (IDU). HCV is characterized by a high intra-host variability, and the selecting driving forces could select variants containing resistance-associated substitutions (RAS) that reduce treatment effectiveness. The main goal of this study was to analyze the sequence variation of NS5A in treatment-naïve IDU. The epidemiological and clinical status of hepatitis C were analyzed, and samples were sequenced by Sanger and Next-Generation sequencing (NGS) to assess RAS and confirm HCV subtypes. Phylogenetic classification was concordant: 1a, 52.4%; 1b, 10.7%; 3a, 20.2%; 4a, 8.3%; 4d, 7.1%; and one 2k/1b recombinant. A 1a/3a mixed infection was detected by NGS. RAS were found in 34.5% (29/84) of samples using Sanger sequencing, while in 42.9% (36/84) using NGS. In sequences from subtypes 1a and 1b, RAS K24R, M28V, Q30H/R, H58D/P/Q/R, and RAS L31M and P58S were detected, respectively. In subtype 3a, RAS A30S/T, Y93H and polymorphisms in position 62 were identified. Additionally, RAS P58L was detected in genotype 4. The strategy used for the molecular survey of baseline HCV resistance is of particular importance to achieve treatment effectiveness and contribute to the elimination of hepatitis C.
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Affiliation(s)
- Diogo Ramos
- Reference Laboratory of HIV and Hepatitis B and C, Department of Infectious Diseases, National Institute of Health, Av. Padre Cruz, P-1649-016 Lisbon, Portugal
| | - Miguel Pinto
- Genomics and Bioinformatics Unit, Department of Infectious Diseases, National Institute of Health, Av. Padre Cruz, P-1649-016 Lisbon, Portugal
| | - Rodrigo Sousa Coutinho
- Association Ares do Pinhal, Association for the Rehabilitation of Drug Addicts, Low-Threshold Methadone Substitution Program, R. José Inácio Andrade, Loja 2-A6-10B Quinta do Lavrado, P-1900-418 Lisbon, Portugal
| | - Carolina Silva
- Reference Laboratory of HIV and Hepatitis B and C, Department of Infectious Diseases, National Institute of Health, Av. Padre Cruz, P-1649-016 Lisbon, Portugal
| | - Miriam Quina
- Reference Laboratory of HIV and Hepatitis B and C, Department of Infectious Diseases, National Institute of Health, Av. Padre Cruz, P-1649-016 Lisbon, Portugal
| | - João Paulo Gomes
- Genomics and Bioinformatics Unit, Department of Infectious Diseases, National Institute of Health, Av. Padre Cruz, P-1649-016 Lisbon, Portugal
| | - Elizabeth Pádua
- Reference Laboratory of HIV and Hepatitis B and C, Department of Infectious Diseases, National Institute of Health, Av. Padre Cruz, P-1649-016 Lisbon, Portugal
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Boska GDA, Seabra PRC, Oliveira MAFD, Fernandes IFDAL, Claro HG, Sequeira RMR. Consequences of psychoactive substance use: a comparative study of two services in Brazil and Portugal. Rev Esc Enferm USP 2021; 55:e20210138. [PMID: 34516604 DOI: 10.1590/1980-220x-reeusp-2021-0138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 07/01/2021] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE To compare the consequences of psychoactive substance use among users of mental health services in Brazil and Portugal. METHOD Cross-sectional, comparative, quantitative study, carried out with 362 users of two specialized treatment services in the cities of São Paulo (n = 200) and Lisbon (n = 162). Data collected in 2019 through the application of the Substance Addiction Consequences scale. A descriptive analysis and ordinary least squares and logistic regressions were performed. RESULTS All dimensions assessed by the scale were more severe for Brazilian users, with a difference for the physical domain and cognitive skills (p < 0.01). Brazilian participants were more likely to consume cocaine (p < 0.01) and have psychosis (p = 0.02) and Portuguese participants to have hepatitis (p < 0.01), personality disorders (p < 0.01), use benzodiazepines (p < 0.01) and tobacco (p < 0.01), and receive pharmacological support (p < 0.01). CONCLUSION It was found that Brazilian users have more serious consequences related to substance use, and Portuguese users have more comorbidities and exposure to risky consumption. It emerges that Portuguese responses minimize the consequences severity.
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Affiliation(s)
- Gabriella de Andrade Boska
- Universidade de São Paulo, Escola de Enfermagem, Grupo de Estudos em Álcool e outras Drogas, São Paulo, SP, Brazil
| | | | | | | | - Heloísa Garcia Claro
- Universidade Estadual de Campinas, Faculdade de Enfermagem, Campinas, SP, Brazil
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4
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Tamori A, Uchida-Kobayashi S, Kozuka R, Motoyama H, Yoshida K, Odagiri N, Kotani K, Kawamura E, Fujii H, Hagihara A, Enomoto M, Kawada N. High dropout rate from aftercare program of antihepatitis C therapy for patients with history of injection drug use. JGH Open 2020; 4:964-969. [PMID: 33102771 PMCID: PMC7578294 DOI: 10.1002/jgh3.12376] [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: 03/17/2020] [Revised: 05/13/2020] [Accepted: 06/04/2020] [Indexed: 12/16/2022]
Abstract
Background and Aim We assessed direct‐acting antiviral (DAA) treatment for patients with hepatitis C virus (HCV) and a history of injection drug use (IDU) in Japan. Method This retrospective observational study was based on clinical records. Overall, 804 DAA‐naïve HCV‐infected patients were enrolled, treated with a 12‐week regimen of DAAs, and had available information about a history of IDU. Anti‐HCV efficacy was defined as a sustained viral response 12 weeks post‐treatment (SVR12) only in patients who were assessed after 12 weeks [modified intention‐to‐treat (ITT) analyses]. We compared the antiviral effect between patients with (past‐IDU) and without a history of IDU (non‐IDU). We also evaluated the characteristics of each group, including the overall dropout rate and economic background. Results Overall, 78 (9.7%) patients had a history of IDU. Compared to the non‐IDU group at baseline, the past‐IDU group consisted of predominantly male and younger patients infected with HCV genotype 2. Overall, 3% (3/78) and 16% (116/726) of the patients had cirrhosis in the past‐IDU and non‐IDU group, respectively. There was a significantly higher rate of welfare recipients in the past‐IDU group. SVR rate was 97% (59/61) in the past‐IDU group and 99% (689/699) in the non‐IDU group. The cumulative rate of dropout from an aftercare program was high in the past‐IDU group (P < 0.01). Conclusions DAAs had a remarkable anti‐HCV effect in patients with past‐IDU who continued in an aftercare program. It is necessary to understand the characteristics of past‐IDU patients to establish a support system for aftercare programs.
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Affiliation(s)
- Akihiro Tamori
- Department of Hepatology, Graduate School of Medicine Osaka City University Osaka Japan
| | | | - Ritsuzo Kozuka
- Department of Hepatology, Graduate School of Medicine Osaka City University Osaka Japan
| | - Hiroyuki Motoyama
- Department of Hepatology, Graduate School of Medicine Osaka City University Osaka Japan
| | - Kanako Yoshida
- Department of Hepatology, Graduate School of Medicine Osaka City University Osaka Japan
| | - Naoshi Odagiri
- Department of Hepatology, Graduate School of Medicine Osaka City University Osaka Japan
| | - Kohei Kotani
- Department of Hepatology, Graduate School of Medicine Osaka City University Osaka Japan
| | - Etsushi Kawamura
- Department of Hepatology, Graduate School of Medicine Osaka City University Osaka Japan
| | - Hideki Fujii
- Department of Premier Preventive Medicine, Graduate School of Medicine Osaka City University Osaka Japan
| | - Atsushi Hagihara
- Department of Hepatology, Graduate School of Medicine Osaka City University Osaka Japan
| | - Masaru Enomoto
- Department of Hepatology, Graduate School of Medicine Osaka City University Osaka Japan
| | - Norifumi Kawada
- Department of Hepatology, Graduate School of Medicine Osaka City University Osaka Japan
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Bajis S, Grebely J, Hajarizadeh B, Applegate T, Marshall AD, Ellen Harrod M, Byrne J, Bath N, Read P, Edwards M, Gorton C, Hayllar J, Cock V, Peterson S, Thomson C, Weltman M, Jefferies M, Wood W, Haber P, Ezard N, Martinello M, Maher L, Dore GJ. Hepatitis C virus testing, liver disease assessment and treatment uptake among people who inject drugs pre- and post-universal access to direct-acting antiviral treatment in Australia: The LiveRLife study. J Viral Hepat 2020; 27:281-293. [PMID: 31698545 DOI: 10.1111/jvh.13233] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 09/04/2019] [Accepted: 10/07/2019] [Indexed: 02/06/2023]
Abstract
Gaps in hepatitis C virus (HCV) testing, diagnosis, liver disease assessment and treatment uptake among people who inject drugs (PWID) persist. We aimed to describe the cascade of HCV care among PWID in Australia, prior to and following unrestricted access to direct-acting antiviral (DAA) treatment. Participants enrolled in an observational cohort study between 2014 and 2018 provided fingerstick whole-blood samples for dried blood spot, Xpert HCV Viral Load and venepuncture samples. Participants underwent transient elastography and clinical assessment by a nurse or general practitioner. Among 839 participants (mean age 43 years), 66% were male (n = 550), 64% (n = 537) injected drugs in the previous month, and 67% (n = 560) reported currently receiving opioid substitution therapy. Overall, 45% (n = 380) had detectable HCV RNA, of whom 23% (n = 86) received HCV treatment within 12 months of enrolment. HCV treatment uptake increased from 2% in the pre-DAA era to 38% in the DAA era. Significant liver fibrosis (F2-F4) was more common in participants with HCV infection (38%) than those without (19%). Age 50 years or older (aOR, 2.88; 95% CI, 1.18-7.04) and attending a clinical follow-up with nurse (aOR, 3.19; 95% CI, 1.61-6.32) or physician (aOR, 11.83; 95% CI, 4.89-28.59) were associated with HCV treatment uptake. Recent injection drug use and unstable housing were not associated with HCV treatment uptake. HCV treatment uptake among PWID has increased markedly in the DAA era. Evaluation of innovative and simplified models of care is required to further enhance treatment uptake.
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Affiliation(s)
- Sahar Bajis
- The Kirby Institute, UNSW Sydney, Sydney, NSW, Australia
| | - Jason Grebely
- The Kirby Institute, UNSW Sydney, Sydney, NSW, Australia
| | | | | | - Alison D Marshall
- The Kirby Institute, UNSW Sydney, Sydney, NSW, Australia.,Centre for Social Research in Health, UNSW Sydney, Sydney, NSW, Australia
| | | | - Jude Byrne
- Australian Injecting and Illicit Drug Users League, Canberra, ACT, Australia
| | - Nicky Bath
- NSW Users and AIDS Association, Sydney, NSW, Australia
| | | | - Michael Edwards
- South Western Sydney Local Health District Drug Health Services, Sydney, NSW, Australia
| | - Carla Gorton
- Cairns Sexual Health Service, Cairns, QLD, Australia
| | - Jeremy Hayllar
- Alcohol and Drug Service, Metro North Mental Health, Metro North Hospital and Health Service, Brisbane, QLD, Australia
| | - Victoria Cock
- Drug and Alcohol Services of South Australia, Adelaide, SA, Australia
| | | | - Claire Thomson
- Bayside Alcohol and Drug Services, Cleveland, QLD, Australia
| | | | | | - William Wood
- Sydney Medically Supervised Injecting Centre, Sydney, NSW, Australia
| | - Paul Haber
- Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - Nadine Ezard
- Alcohol and Drug Service, St Vincent's Hospital, Sydney, NSW, Australia.,Faculty of Medicine, UNSW Sydney, Sydney, NSW, Australia
| | | | - Lisa Maher
- The Kirby Institute, UNSW Sydney, Sydney, NSW, Australia.,Burnet Institute, Melbourne, Vic, Australia
| | - Gregory J Dore
- The Kirby Institute, UNSW Sydney, Sydney, NSW, Australia
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Velosa J, Macedo G. Elimination of Hepatitis C in Portugal: An Urban Legend? GE-PORTUGUESE JOURNAL OF GASTROENTEROLOGY 2020; 27:166-171. [PMID: 32509922 DOI: 10.1159/000505582] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 12/01/2019] [Indexed: 12/15/2022]
Abstract
The burden of hepatitis C virus infection remains very high despite huge progress in the cure of the infection. The high prevalence of hepatitis C, especially in vulnerable groups and particularly drug users, may compromise the achievement of the 2030 WHO targets with a 90% reduction in new infections and a 65% reduction in mortality. Therapy with the latest pangenotypic direct-acting antivirals provides cure rates in the order of 97% with short-term oral treatment (8-12 weeks) and with an excellent safety and tolerability profile. Curing the infection causes significant health gains derived from preventing complications from cirrhosis, especially hepatocellular carcinoma, and from liver transplantation. Elimination of hepatitis seems feasible with the implementation of a massive therapy program, focusing particularly on vulnerable populations, through micro-elimination strategies, and in the general population with age-based screening. The reduction of the virus reservoir (humans are the only reservoir) is a determining factor in eradicating the virus.
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Affiliation(s)
- José Velosa
- Gastroenterology Department, Centro Hospitalar Lisboa Norte, Lisbon, Portugal.,Faculty of Medicine, University of Lisbon, Lisbon, Portugal
| | - Guilherme Macedo
- Gastroenterology Department, Centro Hospitalar e Universitário São João, Porto, Portugal.,Faculty of Medicine, University of Porto, Porto, Portugal
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High rates of early HCV reinfection after DAA treatment in people with recent drug use attended at mobile harm reduction units. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2019; 72:181-188. [PMID: 31253391 DOI: 10.1016/j.drugpo.2019.06.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 06/15/2019] [Accepted: 06/17/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS The World Health Organization recently called for the elimination of hepatitis C virus (HCV) and has identified people who inject drugs (PWID) as a key target population. Clinical trials analyzing currently available all-oral regimens have demonstrated a high degree of efficacy in this population, with a relatively low reinfection rate. There is an urgent need to confirm these data in a harm reduction and active consumption setting. The primary aim of this study was to evaluate the HCV reinfection rate in people with recent drug use followed at low-threshold mobile harm reduction units. METHOD We included people with recent drug use (smoked or injected heroin/cocaine in the previous 6 months) who received HCV treatment and were attended at two low-threshold mobile harm reduction units over 19 months. Sustained virologic response was assessed 12 weeks after therapy (SVR12). The incidence density of HCV reinfection was defined as the number of reinfections per 100-person years (PY) using person-time of observation and was stratified by drug consumption at initiation of HCV treatment. Cox proportional hazard regression analysis was used to assess factors associated with reinfection. RESULTS During the study period, 160 people who used drugs in the past 6 months completed HCV therapy. 122 (73.9%) and 88 (53.3%) reported injecting drug use in the 6 months and 30 days prior to HCV treatment, respectively. The overall SVR12 was 68% in the ITT analysis (reinfection = failure) and 90.7% in the modified intent-to-treat analysis (considering reinfections as response and removing people who were missing SVR data). The cohort at-risk for reinfection (n = 121) included 47 (39.2%) people who initiated HCV treatment with recently reported abstinence. Reinfection was identified in 10 persons (8.3%), and the median time to reinfection was 7.2 (IQR 4.2-18) months. Total follow-up time at-risk was 101.1-PY (median 0.6 years, IQR 0.3-1.3). The overall incidence of reinfection was 9.8 per 100-PY (95% CI 4.7,18.2). The incidence of reinfection was higher amongst those who had injected drugs in the previous 6 months (16.7 [95%CI 8.0; 30.7] per 100-PY) and in the previous 30 days (18.9 [95% CI 8.1; 37.2] per 100-PY). In the adjusted analysis, only injecting drugs use in the month prior to initiation of HCV therapy was associated with reinfection (aHR 8.7, 95%CI 1.0; 73.6; p 0.04). CONCLUSION High efficacy of HCV treatment, was found in people with recent drug use attended and followed at low-threshold mobile harm reduction units. The high rate of early HCV reinfections in this setting should promote surveillance for reinfection at 7-month intervals after ending the treatment or earlier.
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Valencia La Rosa J, Ryan P, Alvaro-Meca A, Troya J, Cuevas G, Gutiérrez J, Moreno S. HCV seroconversion in a cohort of people who use drugs followed in a mobile harm reduction unit in Madrid: Breaking barriers for HCV elimination. PLoS One 2018; 13:e0204795. [PMID: 30281616 PMCID: PMC6169909 DOI: 10.1371/journal.pone.0204795] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 09/15/2018] [Indexed: 01/26/2023] Open
Abstract
Background and aims Harm reduction strategies have been shown to decrease the incidence of human immunodeficiency virus (HIV) infection in people who inject drugs (PWID), but the results have been inconsistent when it comes to prevention of hepatitis C virus (HCV) infection. We aimed to examine the rate of HCV seroconversion among people who use drugs (PWUD) followed at a mobile harm reduction unit (MHRU) to evaluate if a low-threshold methadone substitution program (LTMSP) is associated with a low HCV seroconversion rate and subsequently identify barriers for elimination. Materials and methods A cohort of PWUD have been followed at a MRHU in Madrid between 2013 and 2016. Individuals who were negative for HCV antibodies at baseline and who had at least one retest for HCV antibodies were eligible. Kaplan-Meier methods were employed to estimate the global incidence density. Results During the study period, 946 PWUD were screened for HCV at least once. At baseline 127 PWUD were negative for HCV antibodies and had at least one follow-up HCV antibodies test. The baseline HCV prevalence was 33%. After a median 0.89 (IQR 0.3–1.5) years of follow-up and 135 person-years of risk for HCV infection, 28 subjects seroconverted. The incidence density for HCV seroconversion for this sample was 20.7 cases (95% CI: 14.3–29.7) per 100 person-years. Injecting drugs in the last year was strongly associated to HCV seroconversion (AHR 15.5, 95%CI 4.3–55.8, p < 0.001). Methadone status was not associated to HCV seroconversion. Conclusions A high incidence of HCV infection was found among PWUD at a MHRU in Madrid. In this setting opiate substitutive treatment (OST) as a LTMSP does not appear to protect against HCV seroconversion.
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Affiliation(s)
- Jorge Valencia La Rosa
- Unidad Móvil de Reducción del Daño, Subdirección General de Asistencia en Adicciones, Madrid, España
- * E-mail:
| | - Pablo Ryan
- Medicina Interna, Hospital Universitario Infanta Leonor, Madrid, España
| | | | - Jesús Troya
- Medicina Interna, Hospital Universitario Infanta Leonor, Madrid, España
| | - Guillermo Cuevas
- Medicina Interna, Hospital Universitario Infanta Leonor, Madrid, España
| | - Jorge Gutiérrez
- Organización no gubernamental “Madrid Positivo”, Madrid, España
| | - Santiago Moreno
- Servicio de Enfermedades Infecciosas, Hospital Universitario Ramón y Cajal, Universidad de Alcalá, IRYCIS, Madrid, España
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High HIV seroconversion rate in hepatitis C virus-infected drug users followed in a harm reduction unit: a lost opportunity for preexposure prophylaxis. AIDS 2018; 32:1157-1163. [PMID: 29561294 DOI: 10.1097/qad.0000000000001806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Current harm reduction strategies will probably remain insufficient to eliminate HIV transmission among drug users. We aimed to estimate the HIV seroconversion rate among drug users followed at a harm reduction unit (HRU) to evaluate the potential use of preexposure prophylaxis as a prevention tool. DESIGN AND METHODS A cohort of drug users has been followed at an HRU in Madrid between 2013 and 2016. Individuals who were HIV negative at baseline and who had at least one retest for HIV infection were eligible. Kaplan-Meier methods were employed to estimate the incidence density. RESULTS A total of 954 drug users had at least an HIV test. At baseline, 260 were HIV negative and had at least one follow-up HIV test. After 330.89 person-years of risk for HIV infection, 10 (3.8%) seroconverted. Overall incidence density of HIV seroconversion was 3.02 [95% confidence interval (CI); 1.4-5.5] per 100 person-years, with differences according to hepatitis C virus (HCV) serostatus: 1.17 (95% CI; 0.1-4.2) per 100 person-years in negative HCV individuals and 4.98 (95% CI; 2.1-9.8) per 100 person-years in positive HCV individuals. In the multivariable analysis, infection with HCV remained independently associated with time to HIV seroconversion (adjusted hazard ratio = 6.43; 95% CI; 1.1-36.5, P = 0.035). CONCLUSION Despite efforts in HIV prevention in a HRU, a high incidence of HIV was found among active drug users. Positive HCV status is a strong predictor of HIV seroconversion. In this context, preexposure prophylaxis implementation should be considered as an additional tool for HIV prevention in this population.
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