Publications by authors named "William Sievert"

Background And Aims: Cure of hepatitis C virus (HCV) infection decreases liver- and all-cause mortality. However, the risk of early mortality after HCV cure remains. We examined factors associated with cause-specific mortality after direct-acting antiviral (DAA) therapy.

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Background And Aims: Acute-on-chronic liver failure (ACLF) has a 22%-74% 28-day mortality rate and 30%-40% 30-day readmission rate. We investigated the acceptability and feasibility of a multimodal community intervention for ACLF.

Methods: A single-arm nonrandomized pilot study of consecutive participants with ACLF was conducted in a tertiary health service.

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Introduction: Alcohol use is common in patients with chronic hepatitis C virus (HCV) infection. We examined the impact of alcohol use on direct-acting antiviral (DAA) therapy outcome and the clinical course of liver disease and 2-year survival for patients receiving HCV DAA therapy.

Methods: Adults (n = 2624) recruited from 26 Australian hospital liver clinics during 2016-2021 were followed up for 2 years.

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Background And Aims: Accurate biomarkers to predict outcomes following discontinuation of nucleos(t)ide analogue (NA) therapy are needed. We evaluated serum hepatitis B core-related antigen (HBcrAg) level as a biomarker for predicting outcomes after NA discontinuation.

Methods: Patients with HBeAg-negative chronic hepatitis B (CHB) without cirrhosis were enrolled in a prospective trial evaluating clinical outcomes until 96 weeks after NA discontinuation.

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Placenta-derived human amniotic epithelial cells (hAEC) exhibit anti-inflammatory and anti-fibrotic effects in cirrhosis models. We conducted a first-in-human phase I clinical trial to assess the safety and tolerability of hAEC in adults with compensated cirrhosis. We examined increasing and repeated doses of hAEC in 9 patients in 3 cohorts.

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Background: Direct-acting antiviral (DAA) therapies for hepatitis C virus infection (HCV) lead to excellent rates of sustained virological response (SVR). However, loss to follow-up (LTFU) for SVR testing remains a challenge. We examine factors associated with LTFU in a real-world setting.

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Background: Non-alcoholic fatty liver disease (NAFLD) is associated with visceral adiposity. We assessed the effectiveness of time-restricted fasting (TRF) for 16 h daily without calorie restrictions compared to standard care (SC; diet and lifestyle advice) in improving visceral adiposity and steatosis via controlled attenuation parameter (CAP).

Methods: In a prospective single-blind randomized controlled trial, 32 participants with NAFLD were randomly assigned to TRF or SC for 12 weeks.

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Background: Local fistula injection of mesenchymal stromal/stem cells (MSC) is effective for complex perianal Crohn's fistulas but is also expensive and requires specialised facilities for cell revival before administration. Human amnion epithelial cells (hAEC) are non-MSC cells with therapeutic properties. The primary aim of this study was safety of hAEC therapy.

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Background & Aims: RG6346 is an N-acetyl-D-galactosamine (GalNAc)-conjugated, double-stranded RNA interference agent targeting the HBV genome S-region. We investigated the safety, tolerability, pharmacokinetics, and pharmacodynamics of RG6346 in healthy volunteers and patients with chronic HBV infection (CHB).

Methods: This first-in-human, adaptive, randomized, double-blinded, phase I study recruited three groups of participants: Group A, 30 healthy volunteers received single-dose RG6346 at 0.

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Background And Aims: HBV RNA in peripheral blood reflects HBV cccDNA transcriptional activity and may predict clinical outcomes. The prospective Melbourne HBV-STOP trial studied nucleot(s)ide analog discontinuation in HBeAg-negative non-cirrhotic participants with long-term virological suppression. Ninety-six weeks after stopping treatment, the proportion of participants with virological relapse (HBV DNA > 2000 IU/mL), biochemical relapse (ALT > 2 × ULN and HBV DNA > 2000 IU/mL), or hepatitis flare (ALT > 5 × ULN and HBV DNA > 2000 IU/mL) was 89%, 58%, and 38%, respectively.

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Background: The economic burden of decompensated chronic liver disease (CLD) on Australian healthcare services is poorly characterised.

Aims: To evaluate the in-patient healthcare utilisation costs associated with decompensated CLD at Monash Health, an Australian tertiary healthcare service.

Methods: The current retrospective cost analysis examined patients with decompensated CLD admitted between 1 January 2012 and 31 December 2018.

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Article Synopsis
  • * Compared to patients with normal liver function, those with hepatitis flares showed increased activity in peripheral TLR signaling and higher expression of specific receptors on immune cells during their peak flare.
  • * The study concludes that stopping NA therapy triggers a strong innate immune response in hepatitis B patients, highlighting the role of the innate immune system in the severity of hepatitis flares.
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Background: Acute-on-chronic liver failure (ACLF) represents a rising global healthcare burden, characterised by increasing prevalence among patients with decompensated cirrhosis who have a 28-day transplantation-free mortality of 33.9%. Due to disease complexity and a high prevalence of socio-economic disadvantage, there are deficits in quality of care and adherence to guideline-based treatment in this cohort.

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Background And Aims: Progressive liver fibrosis related to non-alcoholic fatty liver disease (NAFLD) is associated with all-cause and liver-related mortality. We assessed vibration-controlled transient elastography (VCTE) as a predictor of mortality.

Method: Data from patients who underwent VCTE for NAFLD at four large health services in Victoria, Australia between the years 2008 and 2019 were linked to state-wide data registries.

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Background & Aims: RNA interference therapy has been shown to reduce hepatitis B surface antigen (HBsAg) levels in preclinical models, which could confer functional cure in patients with chronic hepatitis B. This phase IIa trial (ClinicalTrials.gov Identifier: NCT03365947) assessed the safety and efficacy of the small-interfering RNA JNJ-73763989 (JNJ-3989) plus a nucleos(t)ide analogue (NA), with/without the capsid assembly modulator JNJ-56136379 (JNJ-6379) in patients with chronic hepatitis B.

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Background: First Nations Peoples of Australia are disproportionally affected by hepatitis C (HCV) infection. Through a prospective study we evaluated the outcome of direct-acting antiviral (DAA) therapy among First Nations Peoples with HCV infection.

Methods: Adults who initiated DAA therapy at one of 26 hospitals across Australia, 2016-2019 were included in the study.

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Background And Aims: In 2016, direct-acting antiviral (DAA) treatment for hepatitis C (HCV) became available through Australia's universal health care system, with the aim of HCV elimination. We report real-world effectiveness of DAA HCV treatment in Australia from a clinically well-informed cohort, enriched for cirrhosis and prior HCV treatment.

Methods: 3413 patients were recruited from 26 hospital liver clinics across Australia from February 2016 to June 2020.

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Background And Aims: Current guidelines recommend long-term nucleot(s)ide analogue (NA) therapy for patients with HBeAg-negative chronic hepatitis B (CHB). However, disease remission has been described after stopping NA therapy, as well as HBsAg loss.

Methods: We performed a prospective multi-centre cohort study of stopping NA therapy.

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The diagnosis and management of inflammatory bowel disease relies on histological assessment, which is costly, subjective, and lacks utility for point-of-care diagnosis. Fourier-transform infra-red spectroscopy provides rapid, non-destructive, reproducible, and automatable label-free biochemical imaging of tissue for diagnostic purposes. This study characterises colitis using spectroscopy, discriminates colitis from healthy tissue, and classifies inflammation severity.

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Conventional models of health care for the hepatitis C virus (HCV) underserve people with serious mental illness. In a 6-month proof-of-concept study, colocated HCV care coordination was assessed within community mental health settings. The program, which relied on referrals to a visiting hepatologist and was augmented by a part-time nurse practitioner, received 18 referrals for HCV management.

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To perform a meta-analysis of hepatitis C virus (HCV) prevalence in people with serious mental illness (SMI) and to systematically review barriers to care with the contention that both individual complications and HCV community transmission can be reduced with enhanced health care strategies. PubMed, Scopus, Embase, CINAHL, and Web of Science were searched for articles published in English between April 21, 1989, and July 1, 2020. The terms and were cross-referenced with and .

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Background: People with serious mental illness (SMI) are underserved from a hepatitis C virus (HCV) screening and treatment perspective.

Aims: To examine the HCV care cascade in people with SMI and to pilot a supported HCV treatment integration programme.

Methods: HCV prevalence was retrospectively analysed from 4492 consecutive individuals admitted to a tertiary hospital mental health service between January 2017 and December 2018.

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Background: Non-alcoholic fatty liver disease is the most common liver disease globally and in its inflammatory form, non-alcoholic steatohepatitis (NASH), can progress to cirrhosis and hepatocellular carcinoma (HCC). Currently, patient education and lifestyle changes are the major tools to prevent the continued progression of NASH. Emerging therapies in NASH target known pathological processes involved in the progression of the disease including inflammation, fibrosis, oxidative stress and hepatocyte apoptosis.

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Background: Alcohol is the main cause of chronic liver disease. The Enhanced Liver Fibrosis (ELF) test is a serological biomarker for fibrosis staging in chronic liver disease, however its utility in alcohol-related liver disease warrants further validation. We assessed the diagnostic and prognostic performance of ELF in alcohol-related liver disease.

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Background/purpose Of The Study: Little is known about all-cause liver disease in people with serious mental illness (SMI), despite heightened risk factors. We, therefore, prospectively assessed liver disease by etiology and severity in a cross-sectional cohort of people with SMI at a tertiary health service.

Methods: We recruited 255 people with SMI between August 2019 and March 2020.

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