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Schwarz M, Schwarz C, Schütz A, Schwanke C, Krabb E, Schubert R, Liebich ST, Bauer D, Burghart L, Brinkmann L, Gutic E, Reiberger T, Haltmayer H, Gschwantler M. Combining treatment for chronic hepatitis C with opioid agonist therapy is an effective microelimination strategy for people who inject drugs with high risk of non-adherence to antiviral therapy. J Virus Erad 2023; 9:100319. [PMID: 36970063 PMCID: PMC10036924 DOI: 10.1016/j.jve.2023.100319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 01/17/2023] [Accepted: 02/27/2023] [Indexed: 03/05/2023] Open
Abstract
Background & aims Despite effective direct-acting antivirals (DAAs), hepatitis C virus (HCV) prevalence is high among people who inject drugs (PWIDs) and non-adherence to therapy remains a major obstacle towards HCV elimination in this subpopulation. To overcome this issue, we have combined ongoing opioid agonist therapy (OAT) with DAAs in a directly-observed therapy (DOT) setting. Method From September 2014 until January 2021 PWIDs at high risk of non-adherence to DAA therapy, who were also on OAT, were included into this microelimination project. Individuals received their OAT and DAAs under supervision of healthcare workers as DOT in a pharmacy or low-threshold facility. Results In total, 504 HCV RNA-positive PWIDs on OAT (387 men, 76.8%; median age: 38 years [IQR 33-45], HIV: 4.6%; hepatitis B: 1.4%) were included into this study. Two thirds reported ongoing intravenous drug use (IDU) and half of them had no permanent housing. Only 41 (8.1%) were lost to follow-up and two (0.4%) died of reasons unrelated to DAA toxicity. Overall, 90.7% of PWIDs achieved sustained virological response 12 weeks after treatment (SVR12) (95% CI: 88.1-93.2%). By excluding those lost to follow-up and hose who had died of causes unrelated to DAAs, the SVR12 rate was 99.1% (95% CI: 98.3-100.0%; modified intention-to-treat analysis). Four PWIDs (0.9%) experienced treatment failure. Over a median follow-up of 24 weeks (IQR 12-39), 27 reinfections (5.9%) were observed in individuals with the highest IDU rates (81.2%). Importantly, even though some were lost to follow-up, all completed their DAA treatment. By using DOT, adherence to DAAs was excellent with only a total of 86 missed doses (0.3% of 25,224 doses). Conclusions In this difficult-to-treat population of PWIDs with high rates of IDU , coupling DAA treatment to OAT in a DOT setting resulted in high SVR12 rates equivalent to conventional treatment settings in non-PWID populations.
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Schmidbauer C, Schwarz M, Schütz A, Schubert R, Schwanke C, Gutic E, Pirker R, Lang T, Reiberger T, Haltmayer H, Gschwantler M. Directly observed therapy at opioid substitution facilities using sofosbuvir/velpatasvir results in excellent SVR12 rates in PWIDs at high risk for non-adherence to DAA therapy. PLoS One 2021; 16:e0252274. [PMID: 34086708 PMCID: PMC8177501 DOI: 10.1371/journal.pone.0252274] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 05/14/2021] [Indexed: 12/30/2022] Open
Abstract
Background & aims We evaluated the effectiveness of sofosbuvir/velpatasvir (SOF/VEL) in difficult-to-treat PWIDs with presumed high risk for non-adherence to antiviral therapy using an innovative concept involving their opioid agonist therapy (OAT) facility. Methods N = 221 patients (m/f: 168/53; median age: 44.7 years (IQR 16.9); HCV-genotype 3: 45.2%; cirrhosis: 33.9%) treated with SOF/VEL were included. PWIDs at high risk for non-adherence to DAA therapy (n = 122) received HCV treatment alongside OAT under the supervision of medical staff ("directly observed therapy", DOT). These patients were compared to patients with presumed excellent drug compliance, who were treated in a "standard setting" (SS) of SOF/VEL prescription at a tertiary care center (n = 99). Results DOT-patients (n = 122/221; 55.2%) were younger than SS-patients (median age: 41.3 vs. 53.0 years), all had psychiatric comorbidities and most had a poor socioeconomic status. 83/122 (68.0%) reported ongoing intravenous drug use. Within the DOT-group, SVR12 was achieved in 99.1% (95% CI: 95.0–100; n = 109/110) with one patient experiencing treatment failure, while n = 12/122 (9.8%) patients were excluded due to loss of follow-up (FU). 5 patients showed HCV reinfection after achieving SVR12. SS-patients achieved SVR in 96.6% (95% CI: 90.3–99.3%; n = 84/87) after exclusion of 10/99 (10.1%) patients who were lost to FU and 2 patients who died prior to SVR12 due to reasons not related to DAA therapy. Conclusions SOF/VEL given as DOT along with OAT in PWIDs at high risk of non-adherence to antiviral therapy including those with ongoing intravenous drug use resulted in excellent SVR rates similar to patients with presumed “excellent compliance” under standard drug intake.
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Affiliation(s)
- Caroline Schmidbauer
- Department of Internal Medicine IV, Klinik Ottakring, Vienna, Austria
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna HIV & Liver Study Group, Vienna, Austria
| | - Michael Schwarz
- Department of Internal Medicine IV, Klinik Ottakring, Vienna, Austria
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna HIV & Liver Study Group, Vienna, Austria
| | - Angelika Schütz
- Ambulatorium Suchthilfe Wien, Suchthilfe Wien gGmbH, Vienna, Austria
| | - Raphael Schubert
- Ambulatorium Suchthilfe Wien, Suchthilfe Wien gGmbH, Vienna, Austria
| | - Cornelia Schwanke
- Ambulatorium Suchthilfe Wien, Suchthilfe Wien gGmbH, Vienna, Austria
| | - Enisa Gutic
- Department of Internal Medicine IV, Klinik Ottakring, Vienna, Austria
| | - Roxana Pirker
- Department of Internal Medicine IV, Klinik Ottakring, Vienna, Austria
| | - Tobias Lang
- Department of Internal Medicine IV, Klinik Ottakring, Vienna, Austria
| | - Thomas Reiberger
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna HIV & Liver Study Group, Vienna, Austria
| | - Hans Haltmayer
- Ambulatorium Suchthilfe Wien, Suchthilfe Wien gGmbH, Vienna, Austria
| | - Michael Gschwantler
- Department of Internal Medicine IV, Klinik Ottakring, Vienna, Austria
- Sigmund Freud University, Vienna, Austria
- * E-mail:
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Schmidbauer C, Schubert R, Schütz A, Schwanke C, Luhn J, Gutic E, Pirker R, Lang T, Reiberger T, Haltmayer H, Gschwantler M. Directly observed therapy for HCV with glecaprevir/pibrentasvir alongside opioid substitution in people who inject drugs-First real world data from Austria. PLoS One 2020; 15:e0229239. [PMID: 32155165 PMCID: PMC7064180 DOI: 10.1371/journal.pone.0229239] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 02/01/2020] [Indexed: 12/12/2022] Open
Abstract
Background Directly acting antivirals (DAA) against hepatitis C virus (HCV) infection have facilitated sustained virologic response (SVR) rates >90% in clinical studies. Yet, real life data regarding DAA treatment in people who inject drugs (PWIDs) are scarce. We evaluated the effectiveness of glecaprevir/pibrentasvir (G/P) in difficult-to-treat PWIDs with presumed high risk of non-adherence to DAA therapy using the concept of directly observed therapy involving their opioid substitution therapy (OST) facility. Methods N = 145 patients (m/f: 91/54; median age: 41.1 (IQR 19.5) years; HCV-genotype (GT) 1/2/3/4: 82/1/56/5, GT3: 38.6%; cirrhosis: n = 6; 4.1%) treated with G/P were included. PWIDs at high risk for non-adherence to DAA therapy received HCV treatment together with their OST under the supervision of medical staff ("directly observed therapy", DOT). The effectiveness of G/P given as DOT in PWIDs with presumed high risk of non-adherence to DAA therapy was compared to patients with suspected “excellent compliance” in the "standard setting" (SS) of G/P prescription at a tertiary care center and self-managed G/P intake at home. Treatment duration was 8–16 weeks according to the G/P drug label. Results DOT-patients (n = 74/145; 51.0%) were younger than SS-patients (median 38.7, IQR 12.5 vs. median 50.6, IQR 20.3 years), all had psychiatric co-morbidities and most had a poor socioeconomic status. 50/74 (67.6%) reported ongoing intravenous drug use (IDU). SVR was achieved in n = 70/74 (94.6%) patients with n = 3 being lost to follow-up (FU) and n = 1 showing nonresponse to therapy. SS-patients achieved SVR in 97.2% (69/71) with n = 1 patient being lost to FU and n = 1 patient with GT3 showing HCV relapse. Conclusion G/P given as DOT along with OST in PWIDs with high risk of non-adherence to DAA therapy resulted in similarly high SVR rates (94.6%) as in patients with presumed “excellent compliance” under standard drug intake.
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Affiliation(s)
- Caroline Schmidbauer
- Department of Internal Medicine IV, Wilhelminenspital, Vienna, Austria
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna HIV & Liver Study Group, Vienna, Austria
| | - Raphael Schubert
- Ambulatorium Suchthilfe Wien, Suchthilfe Wien gGmbH, Vienna, Austria
| | - Angelika Schütz
- Ambulatorium Suchthilfe Wien, Suchthilfe Wien gGmbH, Vienna, Austria
| | - Cornelia Schwanke
- Ambulatorium Suchthilfe Wien, Suchthilfe Wien gGmbH, Vienna, Austria
| | - Julian Luhn
- Ambulatorium Suchthilfe Wien, Suchthilfe Wien gGmbH, Vienna, Austria
| | - Enisa Gutic
- Department of Internal Medicine IV, Wilhelminenspital, Vienna, Austria
| | - Roxana Pirker
- Department of Internal Medicine IV, Wilhelminenspital, Vienna, Austria
| | - Tobias Lang
- Department of Internal Medicine IV, Wilhelminenspital, Vienna, Austria
| | - Thomas Reiberger
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
- Vienna HIV & Liver Study Group, Vienna, Austria
| | - Hans Haltmayer
- Ambulatorium Suchthilfe Wien, Suchthilfe Wien gGmbH, Vienna, Austria
| | - Michael Gschwantler
- Department of Internal Medicine IV, Wilhelminenspital, Vienna, Austria
- Sigmund Freud University, Vienna, Austria
- * E-mail:
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Schütz A, Moser S, Schwanke C, Schubert R, Luhn J, Gutic E, Lang T, Schleicher M, Haltmayer H, Gschwantler M. Directly observed therapy of chronic hepatitis C with ledipasvir/sofosbuvir in people who inject drugs at risk of nonadherence to direct-acting antivirals. J Viral Hepat 2018; 25:870-873. [PMID: 29316001 DOI: 10.1111/jvh.12857] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 11/28/2017] [Indexed: 12/09/2022]
Abstract
An important subgroup of people who inject drugs (PWID) receiving opioid agonist therapy (OAT) cannot be treated in the setting of a hepatology centre and would not regularly ingest their medication when handed to them for self-administration. Our hypothesis was that chronic hepatitis C in these patients could be ideally managed if modern, interferon-free regimens were administered together with OAT under direct observation of a physician or nurse at a low-threshold facility. In this open-label, noninterventional, proof-of-concept study (ClinicalTrials.gov number, NCT02638233), 40 PWID at risk of nonadherence to direct-acting antivirals (DAA) and previously untreated chronic hepatitis C virus genotype 1 infection without cirrhosis were treated with ledipasvir/sofosbuvir for 8 weeks. Patients received antiviral treatment together with OAT under direct observation of a physician or nurse at a low-threshold facility. By following the concept of directly observed therapy, excellent adherence to antiviral therapy was achieved as follows: only 0.16% (95% CI: 0.03-0.47) of scheduled dates for ingestion of the antiviral therapy in combination with OAT were missed by the 40 patients. The rate of sustained virological response 12 weeks after end of therapy was 100% (95% CI: 91.2-100.0). Between week 12 and week 24 of follow-up reinfections were recorded in 2 of 40 patients (5%). Directly observed therapy of chronic hepatitis C is highly effective in PWID at risk of nonadherence to DAA. By this new concept, a group of difficult-to-treat patients can be cured, who could not have been treated in settings of studies published so far.
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Affiliation(s)
- A Schütz
- Suchthilfe Wien gGmbH, Ambulatorium Suchthilfe Wien, Vienna, Austria
| | - S Moser
- Department of Internal Medicine IV, Wilhelminenspital, Vienna, Austria
| | - C Schwanke
- Suchthilfe Wien gGmbH, Ambulatorium Suchthilfe Wien, Vienna, Austria
| | - R Schubert
- Suchthilfe Wien gGmbH, Ambulatorium Suchthilfe Wien, Vienna, Austria
| | - J Luhn
- Suchthilfe Wien gGmbH, Ambulatorium Suchthilfe Wien, Vienna, Austria
| | - E Gutic
- Department of Internal Medicine IV, Wilhelminenspital, Vienna, Austria
| | - T Lang
- Department of Internal Medicine IV, Wilhelminenspital, Vienna, Austria
| | - M Schleicher
- Department of Internal Medicine IV, Wilhelminenspital, Vienna, Austria
| | - H Haltmayer
- Suchthilfe Wien gGmbH, Ambulatorium Suchthilfe Wien, Vienna, Austria
| | - M Gschwantler
- Department of Internal Medicine IV, Wilhelminenspital, Vienna, Austria.,Sigmund Freud University, Vienna, Austria
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Brandenburg T, Agåker M, Atak K, Pflüger M, Schwanke C, Petit T, Lange KM, Rubensson JE, Aziz EF. The electronic structure of perfluorodecalin studied by soft X-ray spectroscopy and electronic structure calculations. Phys Chem Chem Phys 2014; 16:23379-85. [PMID: 25263001 DOI: 10.1039/c4cp03153a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Fluorine and carbon K absorption and emission spectra of liquid perfluorodecalin are presented and analyzed in terms of density functional calculations-configuration interaction. A comprehensive view of the electronic structure is given, and site-specific intramolecular interactions are investigated in detail. It is found that, while the outer fluorine atoms have excess charge in the ground state, the lowest excitations must be associated with charge transfer towards the inner carbon atoms.
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Affiliation(s)
- T Brandenburg
- Institute of Methods for Material Development, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany.
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Schwanke C, Golnak R, Xiao J, Lange KM. Electrochemical flowcell for in-situ investigations by soft x-ray absorption and emission spectroscopy. Rev Sci Instrum 2014; 85:103120. [PMID: 25362384 DOI: 10.1063/1.4899063] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A new liquid flow-cell designed for electronic structure investigations at the liquid-solid interface by soft X-ray absorption and emission spectroscopy is presented. A thin membrane serves simultaneously as a substrate for the working electrode and solid state samples as well as for separating the liquid from the surrounding vacuum conditions. In combination with counter and reference electrodes this approach allows in-situ studies of electrochemical deposition processes and catalytic reactions at the liquid-solid interface in combination with potentiostatic measurements. As model system in-situ monitoring of the deposition process of Co metal from a 10 mM CoCl2 aqueous solution by X-ray absorption and emission spectroscopy is presented.
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Affiliation(s)
- C Schwanke
- Helmholtz-Zentrum Berlin für Materialien und Energie, Institute of Solar Fuels, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - R Golnak
- Helmholtz-Zentrum Berlin für Materialien und Energie, Institute of Methods for Material Development, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - J Xiao
- Helmholtz-Zentrum Berlin für Materialien und Energie, Institute of Methods for Material Development, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - K M Lange
- Helmholtz-Zentrum Berlin für Materialien und Energie, Institute of Solar Fuels, Albert-Einstein-Straße 15, 12489 Berlin, Germany
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Johnson J, Haag M, Beischel L, McCann C, Phillips S, Tunby M, Hansen J, Schwanke C, Reynolds J. ‘Deletion rescue’ by mitotic 11q uniparental disomy in a family with recurrence of 11q deletion Jacobsen syndrome. Clin Genet 2013; 85:376-80. [DOI: 10.1111/cge.12164] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 04/08/2013] [Accepted: 04/08/2013] [Indexed: 11/28/2022]
Affiliation(s)
- J.P. Johnson
- Department of Medical Genetics; Shodair Children's Hospital; Helena MT USA
| | | | | | | | - S. Phillips
- Department of Medical Genetics; Shodair Children's Hospital; Helena MT USA
| | - M. Tunby
- Department of Medical Genetics; Shodair Children's Hospital; Helena MT USA
| | - J. Hansen
- Department of Pediatrics; Bozeman Deaconness Hospital; Bozeman MT USA
| | - C. Schwanke
- Department of Medical Genetics; Shodair Children's Hospital; Helena MT USA
| | - J.F. Reynolds
- Department of Medical Genetics; Shodair Children's Hospital; Helena MT USA
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Johnson JP, Waterson J, Schwanke C, Schoof J. Genome-wide androgenetic mosaicism. Clin Genet 2013; 85:282-5. [PMID: 23509941 DOI: 10.1111/cge.12146] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 03/14/2013] [Accepted: 03/14/2013] [Indexed: 12/15/2022]
Abstract
Individuals with mosaic paternal uniparental disomy (UPD) of apparently all chromosomes have recently been described. They show a 46,XX karyotype, but with a mixture of normal biparental cells and cells entirely of paternal isodisomic origin. We describe an infant who primarily showed signs of Beckwith-Wiedemann syndrome (BWS), but also had other severe and eventually lethal medical problems, notably refractory hypoglycemia. We performed methylation studies for BWS, but incidentally for Angelman syndrome (AS) on leukocytes and in a skin FFPE sample. We also performed chromosome microarray [CNV and single-nucleotide polymorphism (SNP) array] on leukocytes. We found that the patient had hypomethylation consistent with both BWS and AS. Remarkably, this was due to mosaic paternal UPD for chromosomes 11 and 15, respectively. The SNP microarray showed mosaic paternal UPD for all chromosomes. Patients with unusual phenotypes for a typical imprinting disorder should be studied further with assays for imprinted loci on other chromosomes. Chromosomal SNP microarrays are useful in identifying patients with multiple UPDs, sometimes of the whole genome.
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Affiliation(s)
- J P Johnson
- Medical Genetics, Shodair Children's Hospital, Helena, MT, USA
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