Point-of-care hepatitis C testing from needle and syringe programs: An Australian feasibility study

"Quick, simple, and friendly": Understanding the acceptability and accessibility of a nurse and peer-led, mobile model of hepatitis C care adjacent to community corrections in Australia

BACKGROUND

People on community corrections orders are at high-risk for hepatitis C but opportunities for hepatitis C care may be missed due to poor integration of prison-based healthcare. The C No More study is a pilot feasibility study of point-of-care hepatitis C testing and rapid treatment initiation delivered adjacent to community corrections settings in Melbourne, Australia, via a mobile, nurse and peer-led, low-threshold model of care.

METHODS

We conducted a mixed methods evaluation using Levesque's Conceptual Framework of Access to Health to understand participants' experiences and perspectives on the accessibility of this model of care. Interviewer-administered surveys were conducted with all participants after enrolment and initial testing, and qualitative in-depth interviews were conducted with a sample of those who completed the survey.

RESULTS

500 participants completed the survey, and 20 participants undertook in-depth interviews. Both quantitative and qualitative results indicated that participants found the C No More service approachable and accessible due to the informal outreach setting, the involvement of peer workers, and the convenient location of service delivery. Participants reported feeling comfortable seeking care in the van and found the service appropriate and easy to engage with due to the fingerstick point-of-care testing and individualised support provided by the nurse.

CONCLUSION

Multiple elements of the C No More model increased client-perceived service accessibility, including being located close to government services, point-of-care testing, and the person-centred, peer-based and non-judgemental nurse-led care provided. This study supports the implementation of other peer and nurse-led models of hepatitis C care in similar settings.

Elimination of HCV Infection: Recent Epidemiological Findings, Barriers, and Strategies for the Coming Years

Hepatitis C is a disease for which in approximately 30 years we have gone from the discovery of the causative agent in 1989, to the introduction of direct-acting antiviral (DAAs) therapies starting from 2011, and to a proposal for its elimination in 2016, with some countries being on track for this goal. Elimination efforts, in the absence of a vaccine, rely on prevention measures and antiviral therapies. However, treatment rates have declined in recent years and are not considered adequate to achieve this goal at a global level. This poses a great epidemiological challenge, as HCV in many countries still causes a significant burden and most infected people are not yet diagnosed. Consequently, efforts are needed at different levels with common purposes: to facilitate access to screening and diagnosis and to improve linkage to care pathways. In this review, we discuss the latest epidemiological findings on HCV infection, the obstacles to its elimination, and strategies that are believed to be useful to overcome these obstacles but are applied unevenly across the world.

Point-of-Care Testing for Hepatitis C in the Priority Settings of Mental Health, Prisons, and Drug and Alcohol Facilities-the PROMPt Study

BACKGROUND

A barrier to hepatitis C virus (HCV) cure is conventional testing. The aim of this study was to evaluate the effect of HCV antibody and RNA point-of-care testing (POCT) on testing rates, linkage to care, treatment, and acceptability of testing in 3 priority settings in Australia.

METHODS

Participants were enrolled in an interventional cohort study at a reception prison, inpatient mental health service, and inpatient alcohol and other drug unit, between October 2020 and December 2021. HCV POCT was performed using SD Bioline HCV antibody fingerstick test and a reflexive Xpert HCV Viral Load Fingerstick test using capillary blood samples. A retrospective audit of HCV testing and treatment data was performed at each site for the preceding 12-month period to generate a historical control.

RESULTS

A total of 1549 participants received a HCV antibody test with 17% (264 of 1549) receiving a positive result, of whom 21% (55 of 264) tested HCV RNA positive. Across all settings the rate of testing per year significantly increased between the historical controls and the study intervention period by 2.57 fold (rate ratio, 2.57 [95% confidence interval, 2.32-2.85]) for HCV antibody testing and 1.62 (rate ratio, 1.62 [95% confidence interval, 1.31-2.01]) for RNA testing. Treatment uptake was higher during the POCT intervention (86% [47 of 55]; P = .01) compared to the historical controls (61% [27 of 44]).

CONCLUSIONS

This study demonstrated across 3 settings that the use of HCV antibody and RNA POCT increased testing rates, treatment uptake, and linkage to care. The testing model was highly acceptable for most participants.

CLINICAL TRIALS REGISTRATION

ACTRN-12621001578897.

Same-visit hepatitis C testing and treatment to accelerate cure among people who inject drugs (the QuickStart Study): a cluster randomised cross-over trial protocol

INTRODUCTION

Despite universal access to government-funded direct-acting antivirals (DAAs) in 2016, the rate of hepatitis C treatment uptake in Australia has declined substantially. Most hepatitis C is related to injecting drug use; reducing the hepatitis C burden among people who inject drugs (PWID) is, therefore, paramount to reach hepatitis C elimination targets. Increasing DAA uptake by PWID is important for interrupting transmission and reducing incidence, as well as reducing morbidity and mortality and improving quality of life of PWID and meeting Australia's hepatitis C elimination targets.

METHODS AND ANALYSIS

A cluster randomised cross-over trial will be conducted with three intervention arms and a control arm. Arm A will receive rapid hepatitis C virus (HCV) antibody testing; arm B will receive rapid HCV antibody and rapid RNA testing; arm C will receive rapid HCV antibody testing and same-day treatment initiation for HCV antibody-positive participants; the control arm will receive standard of care. The primary outcomes will be (a) the proportion of participants with HCV commencing treatment and (b) the proportion of participants with HCV achieving cure. Analyses will be conducted on an intention-to-treat basis with mixed-effects logistic regression models.

ETHICS AND DISSEMINATION

The study has been approved by the Alfred Ethics Committee (number HREC/64731/Alfred-2020-217547). Each participant will provide written informed consent. Reportable adverse events will be reported to the reviewing ethics committee. The findings will be presented at scientific conferences and published in peer-reviewed journals.

TRIAL REGISTRATION NUMBER

NCT05016609.

TRIAL PROGRESSION

The study commenced recruitment on 9 March 2022 and is expected to complete recruitment in December 2024.

Using an intersectionality lens to explore barriers and enablers to hepatitis C point-of-care testing: a qualitative study among people who inject drugs and service providers

BACKGROUND

Hepatitis C virus (HCV) infection is a significant global health burden, particularly among people who inject drugs. Rapid point-of-care HCV testing has emerged as a promising approach to improve HCV detection and linkage to care in harm reduction organizations such as needle and syringe programs. The objective of this study was to use an intersectionality lens to explore the barriers and enablers to point-of-care HCV testing in a needle and syringe program.

METHODS

A qualitative study was conducted using semi-structured interviews with clients (people who inject drugs) and service providers in a large community organization focused on the prevention of sexually transmitted and blood borne infections and harm reduction in Montreal, Canada. An intersectionality lens was used alongside the Theoretical Domains Framework to guide the formulation of research questions as well as data collection, analysis, and interpretation.

RESULTS

We interviewed 27 participants (15 clients, 12 providers). For clients, four themes emerged: (1) understanding and perceptions of HCV testing, (2) the role of an accessible and inclusive environment, (3) the interplay of emotions and motivations in decision-making, and (4) the impact of intersectional stigma related to HCV, behaviors, and identities. For providers, five themes emerged: (1) knowledge, skills, and confidence for HCV testing, (2) professional roles and their intersection with identity and lived experience, (3) resources and integration of services, (4) social and emotional factors, and (5) behavioral regulation and incentives for HCV testing. Intersectional stigma amplified access, emotional and informational barriers to HCV care for clients. In contrast, identity and lived experience acted as powerful enablers for providers in the provision of HCV care.

CONCLUSION

The application of an intersectionality lens provides a nuanced understanding of multilevel barriers and enablers to point-of-care HCV testing. Findings underscore the need for tailored strategies that address stigma, improve provider roles and communication, and foster an inclusive environment for equitable HCV care. Using an intersectionality lens in implementation research can offer valuable insights, guiding the design of equity-focused implementation strategies.

People in community corrections are a population with unmet need for viral hepatitis care

To reach World Health Organization elimination targets for hepatitis C, different strategies are needed to reach people who have not yet been diagnosed and treated. In the context of declining treatment initiation rates, innovation in service design and delivery is necessary: testing and treatment needs to be offered to people in non-traditional settings. The community corrections (probation and parole) population is larger than the prison population, which has high prevalence of hepatitis C and-in some countries-established diagnosis and treatment programs. In this Viewpoint we identify a gap in hepatitis C care for people under community correctional supervision, a group who have either never been imprisoned or need continuity of healthcare provided in prison. We propose that offering hepatitis C screening and treatment would benefit this population, and accelerate progress to hepatitis C elimination.

Point-of-care HCV RNA testing improves hepatitis C testing rates and allows rapid treatment initiation among people who inject drugs attending a medically supervised injecting facility

BACKGROUND

To achieve hepatitis C virus (HCV) elimination targets, simplified care engaging people who inject drugs is required. We evaluated whether fingerstick HCV RNA point-of-care testing (PoCT) increased the proportion of clients attending a supervised injecting facility who were tested for hepatitis C.

METHODS

Prospective single-arm study with recruitment between 9 November 2020 and 28 January 2021 and follow-up to 31 July 2021. Clients attending the supervised injecting facility were offered HCV RNA testing using the Xpert® HCV Viral Load Fingerstick (Cepheid, Sunnyvale, CA) PoCT. Participants with a positive HCV RNA test were prescribed direct acting antiviral (DAA) therapy. The primary endpoint was the proportion of clients who engaged in HCV RNA PoCT, compared to a historical comparator group when venepuncture-based hepatitis C testing was standard of care.

RESULTS

Among 1618 clients who attended the supervised injecting facility during the study period, 228 (14%) engaged in PoCT. This was significantly higher than that observed in the historical comparator group (61/1,775, 3%; p < 0.001). Sixty-five (28%) participants were HCV RNA positive, with 40/65 (62%) receiving their result on the same day as testing. Sixty-one (94%) HCV RNA positive participants were commenced on DAA therapy; 14/61 (23%) started treatment on the same day as diagnosis. There was no difference in the proportion of HCV RNA positive participants commenced on treatment with DAA therapy when compared to the historical comparator group (61/65, 94% vs 22/26, 85%; p = 0.153). However, the median time to treatment initiation was significantly shorter in the PoCT cohort (2 days (IQR 1-20) vs 41 days (IQR 22-76), p < 0.001). Among participants who commenced treatment and had complete follow-up data available, 27/36 (75%) achieved hepatitis C cure.

CONCLUSIONS

HCV RNA PoCT led to a significantly higher proportion of clients attending a supervised injecting facility engaging in hepatitis C testing, whilst also reducing the time to treatment initiation.

Pharmacy-based screening program to detect hepatitis C in 'baby-boomer' cohorts in western Canada

Background

The estimated prevalence of hepatitis C virus (HCV) in Canada is approximately 1.0%. However, the number of individuals living with HCV but unaware of it is estimated to be 30%-44%. Increased screening programs that are accessible, effective, and feasible are important to ensure treatment and meet WHO elimination goals. We implemented an HCV point of care test (POCT) program in community pharmacies to examine the effectiveness and feasibility in screening.

Methods

Twenty two London Drugs pharmacies in British Columbia and Alberta implemented an HCV POC screening program using OraQuick rapid antibody tests. Consenting patients filled out a 10-question screening questionnaire to examine risk factors. The participants then were tested using the POCT. While waiting for the test (20 minutes), patients were educated on HCV and treatment options.

Results

Three hundred seventy-one participants underwent HCV screening. The most common HCV risk factor was being born between 1945 and 1975 (baby boomer) (93% of cohort), while the second most common was having a tattoo or body piercing (22%). Seven people (2%) tested positive; four were HCV-RNA PCR-positive and were treated, whereas the PCR status of three was unknown as they were lost to follow-up or not tested.

Conclusions

Pharmacy-based POCT was shown to be effective and feasible in the western Canadian context, especially for baby boomers. Sustainable funding for pharmacy screening programs may be considered nationwide to identify HCV-infected persons and help meet elimination goals.

Reflex Hepatitis C Virus Viral Load Testing Following an Initial Positive Hepatitis C Virus Antibody Test: A Global Systematic Review and Meta-analysis

BACKGROUND

Many people who have a positive hepatitis C virus (HCV) antibody (Ab) test never receive a confirmatory HCV RNA viral load (VL) test. Reflex VL testing may help address this problem. We undertook a systematic review to evaluate the effectiveness of reflex VL testing compared with standard nonreflex approaches on outcomes across the HCV care cascade.

METHODS

We searched 4 databases for studies that examined laboratory-based reflex or clinic-based reflex VL testing approaches, with or without a nonreflex comparator, and had data on the uptake of HCV RNA VL test and treatment initiation and turnaround time between Ab and VL testing. Both laboratory- and clinic-based reflex VL testing involve only a single clinic visit. Summary estimates were calculated using random-effects meta-analyses.

RESULTS

Fifty-one studies were included (32 laboratory-based and 19 clinic-based reflex VL testing). Laboratory-based reflex VL testing increased HCV VL test uptake versus nonreflex testing (RR: 1.35; 95% CI: 1.16-1.58) and may improve linkage to care among people with a positive HCV RNA test (RR: 1.47; 95% CI: .81-2.67) and HCV treatment initiation (RR: 1.03; 95% CI: .46-2.32). The median time between Ab and VL test was <1 day for all laboratory-based reflex studies and 0-5 days for 13 clinic-based reflex testing.

CONCLUSIONS

Laboratory-based and clinic-based HCV reflex VL testing increased uptake and reduced time to HCV VL testing and may increase HCV linkage to care. The World Health Organization now recommends reflex VL testing as an additional strategy to promote access to HCV VL testing and treatment.

CLINICAL TRIALS REGISTRATION

PROSPERO CRD42021283822.

Validation of a novel point-of-care test for alanine aminotransferase measurement: A pilot cohort study

BACKGROUND

Alanine aminotransferase (ALT) measurement is essential for evaluation of liver disease. We validated a novel rapid point-of-care (POC) test for ALT1 against laboratory ALT.

METHODS

Stored plasma samples from adults with chronic liver disease (Test cohort n = 240; Validation cohort n = 491) were analysed using the BioPoint® antigen immunoassay POC ALT1 lateral flow test, which provides quantitative ALT results (Axxin handheld reader) or semi-quantitative results (visual read, cut off 40 IU/ml). The accuracy of POC ALT1 to detect ALT > 40 IU/L was determined by ROC analysis. In patients with chronic hepatitis B, treatment eligibility (EASL criteria) was determined using POC ALT1 and compared to laboratory ALT.

RESULTS

POC ALT1 test had good accuracy for laboratory ALT > 40 IU/L: AUROC 0.93 (95% CI: 0.89-0.96) in the Test cohort and AUROC 0.92 (95% CI: 0.88-0.95) in the Validation cohort. POC ALT1 cut off of 0.8 for ALT > 40 IU/L maximised sensitivity (97%) and specificity (71%) in the Test cohort (42% laboratory ALT > 40 IU/L) and yielded PPV 84% and NPV 91% in the Validation cohort (19% laboratory ALT > 40 IU/L). Semi-quantitative POC ALT1 had good accuracy for laboratory ALT in the Validation cohort (AUROC 0.85, 95% CI: 0.81-0.99; sensitivity 77% and specificity 93%). Combined with HBV DNA and transient elastography, both quantitative and semi-quantitative POC ALT1 tests had good accuracy for excluding hepatitis B treatment needs (sensitivity 96%, specificity 78% and NPV 99%).

CONCLUSION

The POC ALT1 test had good accuracy for elevated ALT levels and for determining treatment eligibility among people with chronic hepatitis B.

Mixed-methods evaluation of point-of-care hepatitis C virus RNA testing in a Scottish prison

OBJECTIVES

Hepatitis C virus (HCV) poses a global public health threat. Prisons are a focus of prevention efforts due to high infection burdens. Expedition of treatment for incarcerated people is critical, as many are short-term sentenced. We evaluated point-of-care (PoC) HCV RNA testing in a maximum-security Scottish prison and assessed its impact on transition to treatment. We also evaluated costs and determinants of implementation.

DESIGN

Mixed-methods evaluation of a single-centre care pathway pilot using National Health Service (NHS) data from 2018 to 2021. Descriptive statistics and survival analysis were undertaken. Cost analysis was assessed from a provider perspective. Healthcare staff participated in semistructured interviews and thematic analysis with a deductive approach was undertaken to identify implementation determinants.

SETTING

A large maximum-security Scottish prison health centre administered by the NHS.

PARTICIPANTS

296 incarcerated NHS patients (all men) and six NHS staff members (two men and four women).

INTERVENTIONS

HCV testing using the Cepheid GeneXpert platform with Xpert HCV VL Fingerstick assay.

OUTCOME MEASURES

The main outcome was survival (in days) from HCV test to treatment initiation. Secondary outcomes were cost-per-cure obtained and implementation determinants.

RESULTS

During the pilot, 167 Xpert tests were administered, with an 84% completion rate, and treatment transition was superior for those who received it (p=0.014). Where PoC tests were administered, shorter survival to treatment was observed (19 vs 33 days: adjusted HR (aHR) 1.91 (1.03-3.55), p=0.040; 19 vs 50 days; aHR 3.76 (1.67-8.46), p=0.001). PoC was costlier than conventional testing. In qualitative analysis, most facilitators were observed among characteristics of individual domain while most barriers were noted in the inner setting.

CONCLUSIONS

Integrating PoC HCV RNA diagnosis into nurse-led HCV care in a maximum-security prison health centre shortens survival to HCV treatment. However, there are cost implications to this approach and multiple determinants that impact on implementation should be addressed.

A novel point-of-care test for cirrhosis based on dimeric to monomeric IgA ratio in blood: a pilot cohort study

BACKGROUND AND AIMS

Dimeric IgA to monomeric IgA ratio (dIgA ratio) is a biomarker of gut mucosal leakage in liver cirrhosis. We evaluated the diagnostic performance of a novel point-of-care (POC) dIgA ratio test for cirrhosis.

METHODS

Plasma samples from people with chronic liver disease were analyzed using the BioPoint POC dIgA ratio antigen immunoassay lateral flow test. Cirrhosis was defined by Fibroscan>12.5 kPa, clinical evidence of cirrhosis or liver histopathology. POC dIgA test diagnostic accuracy was determined in a test cohort using receiver operating characteristic curve analysis; optimal cutoffs for sensitivity and specificity were then applied to a validation cohort.

RESULTS

A total of 1478 plasma samples from 866 patients with chronic liver disease were included (test cohort n = 260, validation cohort n = 606). In all, 32% had cirrhosis; 44% Child-Pugh A, 26% Child-Pugh B, and 29% Child-Pugh C. Median POC dIgA ratio was higher in cirrhosis (0.9) compared with no cirrhosis (0.4, p < 0.001), and in Child-Pugh class B/C compared with A cirrhosis (1.4 Child-Pugh B/C vs. 0.6 Child-Pugh A, p < 0.001). POC dIgA ratio test had good diagnostic accuracy for liver cirrhosis in the test cohort (area under the receiver operating characteristic curve=0.80); a dIgA ratio cutoff of 0.6 had a sensitivity of 74% and specificity of 86%. POC dIgA test accuracy was moderate in the validation cohort (area under the receiver operating characteristic curve=0.75; positive predictive value 64%, negative predictive value 83%). Using a dual cutoff approach, 79% of cirrhosis cases were correctly diagnosed and further testing was avoided in 57%.

CONCLUSIONS

POC dIgA ratio test had moderate accuracy for cirrhosis. Further studies evaluating the accuracy of POC dIgA ratio testing for cirrhosis screening are warranted.

Assessment of a primary care e-support package of automated case finding, simplified treatment algorithm and decision support to increase hepatitis B treatment uptake in primary care clinics in Australia (SIMPLY-B Study): protocol for a pilot evaluation

INTRODUCTION

Despite the availability of effective, subsidised hepatitis B treatment, linkage to care and treatment rates remain very low globally. In Australia, specially trained primary care physicians (general practitioner, GPs) can prescribe hepatitis B treatment, however, most hepatitis B care occurs in specialist clinics. Increasing hepatitis B management by GPs in primary care clinics is essential to achieve national hepatitis B linkage to care and treatment targets by 2030.This pilot study determines the feasibility, acceptability and effectiveness of Simply B, a novel GP hepatitis B e-support package designed to increase hepatitis B management by GPs in primary care clinics.

METHODS AND ANALYSIS

This study will be conducted in three parts:Part A: A prospective open-label pilot intervention study, comparing the proportion of people with hepatitis B who are managed by their GP in primary care clinics before, 12 months and 24 months after implementation of the Simply B electronic hepatitis B support package.Part B: A nested qualitative health services feasibility study using semistructured interviews and thematic analysisPart C: Cost-effectiveness analysis.

ETHICS AND DISSEMINATION

This study has received ethics approval by St Vincent's Hospital. Data management and analysis will be centralised through the Department of Gastroenterology, St Vincent's Hospital.

TRIAL REGISTRATION NUMBER

NCT05614466.

Linkage to hepatitis C treatment in two opioid substitution treatment units in Gothenburg, Sweden: a retrospective cohort study

BACKGROUND

Chronic infection with the hepatitis C virus (HCV) is common in people with former or current injection drug use. Among the patients in the opioid substitution treatment (OST) program in Gothenburg, Sweden, more than 50% had been infected with HCV. However, many patients did not have any follow-up for their infection and the linkage to treatment could be improved.

METHODS

A model of care for HCV was introduced at an OST unit in Gothenburg, Sweden, in 2017. The aim was to increase testing and linkage to HCV treatment. A nurse and a medical doctor, both specialized in infectious diseases, performed on-site testing at the OST unit with transient liver elastography (Fibroscan) to evaluate the fibrosis stage and initiated HCV treatment. This study retrospectively reviewed the patients' medical records to assess information regarding participation in the model of care, hepatitis C status, linkage to treatment and treatment outcome.

RESULTS

Among the 225 patients enrolled in OST at baseline, 181 were still in the OST program at the end of study (December 31st, 2018). In total, 29 patients, most of whom did not attend the Clinic of Infectious Diseases, were referred to the model of care. By the end of study, 17 patients (100% of those treated) reached sustained virologic response. In parallel, an additional 19 patients got treatment directly at the Clinic of Infectious Diseases.

CONCLUSION

Integrating HCV screening and examination in an OST unit successfully linked patients to treatment. However, not all patients received treatment. To reach the goal of eliminating HCV, different models of care are needed.

Impact of hepatitis C virus point-of-care RNA viral load testing compared with laboratory-based testing on uptake of RNA testing and treatment, and turnaround times: a systematic review and meta-analysis

BACKGROUND

Point-of-care (POC) hepatitis C virus (HCV) RNA nucleic acid test viral load assays are being used increasingly as an alternative to centralised, laboratory-based standard-of-care (SOC) viral load assays to reduce loss to follow-up. We aimed to evaluate the impact of using POC compared with SOC approaches on uptake of HCV RNA viral load testing and treatment, and turnaround times from testing to treatment along the HCV care cascade.

METHODS

We searched PubMed, Embase, and Web of Science for studies published in English between Jan 1, 2016, and April 13, 2022. We additionally searched for accepted conference abstracts (2016-20) not identified in the main search. The contacts directory of the WHO Global Hepatitis Programme was also used to solicit additional studies on use of POC RNA assays. We included studies if they evaluated use of POC HCV RNA viral load with or without a comparator laboratory-based SOC assay, and had data on uptake of viral load testing and treatment, and turnaround times between these steps in cascade. We excluded studies with a sample size of ten or fewer participants. The POC studies were categorised according to whether the POC assay was based onsite at the clinic, in a mobile unit, or in a laboratory. Studies using the POC assay or comparator SOC assays were further stratified according to four models of care: whether HCV testing and treatment initiation were performed in the same or different site, and on the same or a different visit. The comparator was centralised, laboratory-based HCV RNA SOC assays. For turnaround times, we calculated the weighted median of medians with 95% CIs. We analysed viral load testing and treatment uptake using random-effects meta-analysis. The quality of evidence was rated using the GRADE framework. This study is registered with PROSPERO, CRD42020218239.

FINDINGS

We included 45 studies with 64 within-study arms: 28 studies were in people who inject drugs, were homeless, or both; four were in people incarcerated in prison; nine were in the general or mixed (ie, includes high-risk groups) populations; and four were in people living with HIV. All were observational studies. The pooled median turnaround times between HCV antibody test and treatment initiation was shorter with onsite POC assays (19 days [95% CI 14-53], ten arms) than with either laboratory-based POC assays (64 days [64-64], one arm) or laboratory-based SOC assays (67 days [50-67], two arms). Treatment uptake was higher with onsite POC assays (77% [95% CI 72-83], 34 arms) or mobile POC assays (81% [60-97], five arms) than with SOC assays (53% [31-75], 12 arms); onsite and mobile POC assay vs SOC assay p=0·029). For POC and SOC arms, higher RNA viral load testing uptake was seen with the same-site models for testing and treatment than with different-site models (all within-category p≤0·0001). For onsite and mobile POC arms, there was higher treatment uptake for same-site than different-site models (within-category p<0·0001). Four studies had direct within-study POC versus SOC comparisons for RNA viral load testing uptake (pooled relative risk 1·11 [95% CI 0·89-1·38]), and there were ten studies on treatment uptake (1·32 [1·06-1·64]). Overall, the quality of evidence was rated as low.

INTERPRETATION

Compared with use of laboratory-based SOC HCV viral load testing, the use of POC assays was associated with reduced time from antibody test to treatment initiation and increased treatment uptake. The effect of POC viral load testing is greatest when positioned within a simplified care model in which testing and treatment are provided at the same site, and, where possible, on the same day. POC HCV RNA viral load testing is now recommended in WHO guidelines as an alternative strategy to laboratory-based viral load testing.

FUNDING

Unitaid.

Microneedles as a momentous platform for psoriasis therapy and diagnosis: A state-of-the-art review

Psoriasis is a chronic, autoimmune, and non-communicable skin disease with a worldwide prevalence rate of 2-3%, creating an economic burden on global health. Some significant risk factors associated with psoriasis include genetic predisposition, pathogens, stress, medications, etc. In addition, most patients with psoriasis should also deal with comorbidities such as psoriatic arthritis, inflammatory bowel diseases, cardiovascular diseases, and psychological conditions, including suicidal thoughts. Based on its severity, the treatment approach for psoriasis is categorised into three types, i.e., topical therapy, systemic therapy, and phototherapy. Topical therapy for mild-to-moderate psoriasis faces several issues, such as poor skin permeability, low skin retention of drug formulation, greasy texture of topical vehicle, lack of controlled release, and so on. On the other arrow, systemic therapy via an oral or parenteral route of drug administration involves numerous drawbacks, including first-pass hepatic metabolism, hepatotoxicity, gastrointestinal disturbances, needle pain and phobia, and requirement of healthcare professional to administer the drug. To overcome these limitations, researchers devised a microneedle-based drug delivery system for treating mild-to-moderate and moderate-to-severe psoriasis. A single microneedle system can deliver the anti-psoriatic drugs either locally (topical) or systemically (transdermal) by adjusting the needle height without involving any pain. In this contemplate, the current review provides concise information on the pathophysiology, risk factors, and comorbidities of psoriasis, followed by their current treatment approaches and limitations. Further, it meticulously discusses the potential of microneedles in psoriasis therapy and diagnosis, along with descriptions of their patents and clinical trials.

Recommendations for the integral diagnosis of chronic viral hepatitis in a single analytical extraction

The Spanish Society of Digestive Pathology (SEPD), the Spanish Association for the Study of the Liver (AEEH), the Spanish Society of Infections and Clinical Microbiology (SEIMC) and its Viral Hepatitis Study Group (GEHEP), and with the endorsement of the Alliance for the Elimination of Viral Hepatitis in Spain (AEHVE), have agreed on a document to carry out a comprehensive diagnosis of viral hepatitis (B, C and D), from a single blood sample; that is, a comprehensive diagnosis, in the hospital and/or at the point of care of the patient. We propose an algorithm, so that the positive result in a viral hepatitis serology (B, C and D), as well as human immunodeficiency virus (HIV), would trigger the analysis of the rest of the virus, including the viral load when necessary, in the same blood draw. In addition, we make two additional recommendations. First, the need to rule out a previous hepatitis A virus (VHA) infection, to proceed with its vaccination in cases where IgG-type studies against this virus are negative and the vaccine is indicated. Second, the determination of the HIV serology. Finally, in case of a positive result for any of the viruses analyzed, there must be an automated alerts and initiate epidemiological monitoring.

Hepatitis C virus infection screening reduces mortality and is cost-effective independently of the intervention test

INTRODUCTION

Chronic infection due to hepatitis C virus (HCV) is frequently asymptomatic even in advanced stages of liver disease. Implementation of a screening program based on different HCV tests may enable an earlier diagnosis of HCV liver disease and subsequent application of highly effective treatment.

PATIENTS AND METHODS

A Markov model which compares three different screening strategies for hepatitis C versus no screening in low-risk prevalence (general population) and high-risk prevalence population (people who inject drugs or prison population) was designed, taking into account age at the start of screening and participation. The three strategies were: 1) serological detection of antibodies against the HCV, 2) dried blood spot test (DBS) to detect antibodies against HCV and 3) detection of RNA from HCV. Quality-adjusted life-years (QALY) were taken as a measurement of effectiveness. The incremental cost-effectiveness ratio (ICER) was calculated and a deterministic and probabilistic sensitivity analysis was performed.

RESULTS

All three screening strategies were found to be cost-effective with an ICER of €13,633, €12,015 and €12,328/QALY for AntiHCV, DBS-AntiHCV and DBS-RNA HCV, respectively. There was a decrease in mortality due to liver disease in comparison to no screening for AntiHCV (40.7% and 52%), DBS-AntiHCV (45% and 80%) and DBS-RNA HCV (45.2% and 80%) for low-prevalence and high-prevalence populations, respectively.

CONCLUSION

All test interventions for HCV screening are cost-effective for the early detection of HCV infection, also achieving a reduction in mortality. Thus, implementation of screening programs for HCV should not be halted by decisions on monetary policy.

Awareness of HCV Status and Preferences for Testing and Treatment among People with Recent Injecting Drug Use at a Peer-Led Needle and Syringe Program: The TEMPO Pilot Study

BACKGROUND

New technologies and therapies allow the possibility of a single-visit test and treat model for hepatitis C virus (HCV), addressing some of the barriers to care faced by people who inject drugs.

METHODS

The TEMPO Pilot Study was an interventional cohort study evaluating a single-visit test and treat intervention among people with recent injecting drug use at a one peer-led needle and syringe program (NSP) in Sydney, Australia between September 2019 and February 2021. This analysis evaluated awareness of HCV status and agreement of self-report with HCV RNA test results. The analysis also assessed acceptability of: modality of result delivery, modality of blood sampling, site of treatment, and duration of treatment.

RESULTS

Among 101 participants (median age 43; 31% female), 100 had a valid HCV RNA test result and 27% (27/100) were HCV RNA detectable. Overall, 65% (65/100) were aware of their status. Among people with a positive HCV RNA result, 48% (13/27) were aware of their status. People preferred same-day HCV test results (95%, 96/101), and preferred to receive results in person (69%, 70/101). Receiving treatment at an NSP was acceptable (100%, 101/101) and 78% (79/101) were willing to discuss their health with a peer NSP worker.

CONCLUSION

Half of people with current HCV infection were aware of their status. The high acceptability of simplified testing and treatment pathways delivered at NSPs indicates that this is an appropriate strategy to improve HCV awareness and treatment uptake in this population.

Health worker perceptions of the impact of COVID-19 on harm reduction services for people who inject drugs

The COVID-19 pandemic has affected entire systems of health service provision globally, including health service closure, redeployment of staff and resources and implementation of infection prevention protocols. Harm reduction facilities face particular challenges responding to COVID-19, attempting to continue service provision to people who inject drugs with minimal service disruption whilst protecting their staff. This research assessed the impact of COVID-19 on staff working at harm reduction and alcohol and other drug (AOD) services in Australia in the first 9 months of the pandemic. The research employed mixed methods, using survey data to inform in-depth interviews. Surveys were completed by 207 participants working in the AOD sector and the harm reduction sector nationally. Interviews were conducted with 16 staff at three harm reduction sites in metropolitan Sydney and one regional NSW service. Staff felt able to respond to the trying circumstances of this pandemic, especially as practical messages around the COVID-19 response were similar to those already in place for clients in relation to blood-borne virus prevention. Staff felt that they were still able to provide core services to clients with some modifications in delivery. They were willing to take on additional responsibilities to ensure their own safety and that of clients, including conducting temperature checks and screening questions, whilst also adopting novel service provision strategies to reach clients during lockdowns such as postal services, outreach work and telehealth. NSP and AOD services were able to implement COVID-19 infection control strategies, whilst maintaining and expanding service access through remote and innovative strategies in a manner which supported both clients and service providers, during the first wave of the pandemic in 2020.

Missed opportunities for hepatitis C treatment at a tertiary care hospital in South Australia

BACKGROUND

Hepatitis C is a global epidemic and an estimated 230 000 Australians were living with chronic hepatitis C in 2016. Through effective public health policy and state commitment, Australia has utilised the advent of direct acting antiviral (DAA) therapy to transform the therapeutic landscape for hepatitis C virus (HCV). However, treatment rates are falling and novel public health approaches are required to maintain momentum for HCV elimination. Contemporary discourse in cascades of care have focused on expanding testing capabilities but less attention has been given to linking previously diagnosed patients back to care. Our simple and focused study rests on the premise that hospital admissions are an excellent opportunity to identify and refer previously diagnosed patients for HCV treatment.

AIM

To assess whether inpatients with HCV are appropriately referred on for treatment.

METHODS

We conducted a retrospective single centre cohort study that examined all patients with HCV presenting to The Queen Elizabeth Hospital (QEH) inpatient service between January 1 and December 31, 2017. QEH is a tertiary care hospital in South Australia. The main inclusion criteria were patients with active HCV infection who were eligible for DAA therapy. Our study cohort was identified using a comprehensive list of diagnosis based on international classification of diseases-10 AM codes for chronic viral hepatitis. Patients were excluded from the analysis if they had previously received DAA therapy or spontaneously cleared HCV. Patients presenting with decompensated liver cirrhosis or other systemic medical conditions conferring poor short-term prognosis were also excluded from the analysis. The primary outcome of our study was referral of patients for HCV treatment. Secondary outcomes included assessment of factors predicting treatment referral.

RESULTS

There were 309 inpatients identified with hepatitis C as a principal or additional diagnosis between January 1 and December 31, 2017. Of these patients, 148 had active HCV infection without prior treatment or spontaneous clearance. Overall, 131 patients were deemed eligible for DAA treatment and included in the main analysis. Mean patient age was 47.75 ± 1.08 years, and 69% of the cohort were male and 13% identified as Aboriginal or Torres Strait Islander. Liver cirrhosis was a complication of hepatitis C in 7% of the study cohort. Only 10 patients were newly diagnosed with HCV infection during the study period with the remainder having been diagnosed prior to the study.

CONCLUSION

Under 25% of hepatitis C patients presenting to an Australian tertiary hospital were appropriately referred for treatment. Advanced age, cirrhosis and admission under medical specialties were predictors of treatment referral.

The impact of point-of-care hepatitis C testing in needle and syringe exchange programs on linkage to care and treatment uptake among people who inject drugs: An Australian pilot study

Point-of-care (POC) diagnostics overcome barriers to conventional hepatitis C (HCV) testing in people who inject drugs. This study assessed impact on hepatitis C treatment uptake of POC HCV testing in needle and syringe exchange programs (NSPs). Rapid EC was a single-arm interventional pilot study of HCV POC testing conducted in three inner-city community clinics with NSPs. Twelve months after the POC testing, a retrospective medical record and Pharmaceutical Benefits Scheme audit was performed to determine the number of HCV RNA-positive participants who were prescribed HCV treatment. 70 HCV RNA-positive Rapid EC study participants were included. 44 (63%) were prescribed DAAs; 26 (59%) completed treatment and 15 (34%) had SVR testing, all of whom were cured. Age ≥ 40 years (aOR 3.45, 95% CI 1.10-11.05, p = .03) and secondary school education (aOR 5.8, 95% CI 1.54-21.80, p = .009) had higher likelihood of being prescribed DAAs, whereas homelessness was inversely associated with prescription of DAAs (aOR 0.30, 95% CI 0.09-1.04, p = .057). Median time to receive a DAA script from date of diagnosis was seven days (IQR 0 to 14 days), and time to filling the DAA prescription was 2 days (IQR 0-12 days). In conclusion, provision of POC testing through NSPs was effective for linking new clients to HCV treatment and reduced the time to treatment. Further studies are needed to define the most cost-effective use of POC testing in models of care for people who inject drugs to increase HCV treatment uptake.

A multi-site, nurse-coordinated hepatitis C model of care in primary care and community services in Melbourne, Australia

BACKGROUND

Hepatitis C virus (HCV) treatment through primary care and community-based services will be a critical component of HCV elimination. We evaluated a nurse-coordinated programme providing care across eight sites and analysed progression through the HCV care cascade.

METHODS

People-accessing services from six primary care clinics, a homeless crisis accommodation provider and a mental health service were directly referred to nurses or engaged by nurses during regular clinic visits. Nurses supported HCV testing, treatment and follow-up. The prescription was provided by affiliated clinicians. Logistic regression was used to examine factors associated with treatment commencement and sustained virological response (SVR) testing.

RESULTS

Of 640 people referred to and/or engaged by the nurses from January 2017 to July 2019, 518 had an HCV RNA test of whom 381 (74%) were HCV RNA positive. Treatment was commenced by 281 (74%) people of whom 161 had an SVR test, 157 (97.5%) were cured. Opioid agonist therapy was associated with treatment commencement (aOR 2.68, 95% CI 1.48-4.88). People who were homeless/unstably housed were less likely to commence treatment (aOR 0.45, 95% CI 0.23-0.87). Treatment prescription from a specialist (aOR 2.39, 95% CI 1.20-4.74) and recent injection drug use (<6 months) (aOR 2.15, 95% CI 1.07-4.31) was associated with SVR testing.

CONCLUSION

A nurse-coordinated model of care led to high levels of HCV treatment uptake and cure amongst people attending primary care and community services. More tailored models of care may be beneficial for people who are homeless or have unstable housing. These results support primary care and community-based hepatitis C treatment.

High Effectiveness of Broad Access Direct-Acting Antiviral Therapy for Hepatitis C in an Australian Real-World Cohort: The REACH-C Study

Australia was one of the first countries with unrestricted access to government subsidized direct-acting antiviral (DAA) therapy for adults with chronic hepatitis C virus. This study assessed real-world DAA treatment outcomes across a diverse range of Australian clinical services and evaluated factors associated with successful treatment and loss to follow-up. Real-world Effectiveness of Antiviral therapy in Chronic Hepatitis C (REACH-C) consisted a national observational cohort of 96 clinical services including specialist clinics and less traditional settings such as general practice. Data were obtained on consecutive individuals who commenced DAAs from March 2016 to June 2019. Effectiveness was assessed by sustained virological response ≥12 weeks following treatment (SVR) using intention-to-treat (ITT) and per-protocol (PP) analyses. Within REACH-C, 10,843 individuals initiated DAAs (male 69%; ≥50 years 52%; cirrhosis 22%). SVR data were available in 85% (9,174 of 10,843). SVR was 81% (8,750 of 10,843) by ITT and 95% (8,750 of 9,174) by PP. High SVR (≥92%) was observed across all service types and participant characteristics. Male gender (adjusted odds ratio [aOR] 0.56, 95% confidence interval [CI] 0.43-0.72), cirrhosis (aOR 0.52, 95% CI 0.41-0.64), recent injecting drug use (IDU; aOR 0.64, 95% CI 0.46-0.91) and previous DAA treatment (aOR 0.50, 95% CI 0.28-0.90) decreased the likelihood of achieving SVR. Multiple factors modified the likelihood of loss to follow-up including IDU ± opioid agonist therapy (OAT; IDU only: aOR 1.75, 95% CI 1.44-2.11; IDU + OAT: aOR 1.39, 95% CI 1.11-1.74; OAT only, aOR 1.36; 95% CI 1.13-1.68) and age (aOR 0.97, 95% CI 0.97-0.98). Conclusion: Treatment response was high in a diverse population and through a broad range of services following universal access to DAA therapy. Loss to follow-up presents a real-world challenge. Younger people who inject drugs were more likely to disengage from care, requiring innovative strategies to retain them in follow-up.

Outcomes of the CT2 study: A 'one-stop-shop' for community-based hepatitis C testing and treatment in Yangon, Myanmar

BACKGROUND

With the advent of low-cost generic direct-acting antivirals (DAA), hepatitis C (HCV) elimination is now achievable even in low-/middle-income settings. We assessed the feasibility and effectiveness of a simplified clinical pathway using point-of-care diagnostic testing and non-specialist-led care in a decentralized, community-based setting.

METHODS

This feasibility study was conducted at two sites in Yangon, Myanmar: one for people who inject drugs (PWID), and the other for people with liver disease. Participants underwent on-site rapid anti-HCV testing and HCV RNA testing using GeneXpert^(R) . General practitioners determined whether participants started DAA therapy immediately or required specialist evaluation. Primary outcome measures were progression through the HCV care cascade, including uptake of RNA testing and treatment, and treatment outcomes.

FINDINGS

All 633 participants underwent anti-HCV testing; 606 (96%) were anti-HCV positive and had HCV RNA testing. Of 606 tested, 535 (88%) were RNA positive and had pre-treatment assessments; 30 (6%) completed specialist evaluation. Of 535 RNA positive participants, 489 (91%) were eligible to initiate DAAs, 477 (98%) completed DAA therapy and 421 achieved SVR12 (92%; 421/456). Outcomes were similar by site: PWID site: 91% [146/161], and liver disease site: 93% [275/295]). Compensated cirrhotic patients were treated in the community; they achieved an SVR12 of 83% (19/23). Median time from RNA test to DAA initiation was 3 days (IQR 2-5).

CONCLUSIONS

Delivering a simplified, non-specialist-led HCV treatment pathway in a decentralized community setting was feasible in Yangon, Myanmar; retention in care and treatment success rates were very high. This care model could be integral in scaling up HCV services in Myanmar and other low- and middle-income settings.

Eliminating hepatitis C on the Balearic Islands, Spain: a protocol for an intervention study to test and link people who use drugs to treatment and care

INTRODUCTION

The hepatitis C virus (HCV) is a highly infectious and deadly disease, affecting some 58 million people worldwide. Of the 1.13 million people living in the Balearic Islands, Spain, about 1350 individuals have untreated HCV. Of these, about 1120 (83%) are estimated to be people who use drugs (PWUD), who are one of the key at-risk groups for HCV infection globally. Carrying out micro-elimination approaches focused on this population is crucial to achieve the WHO goal of eliminating HCV by 2030. Thus, the primary objective of this study is to validate a model of care that simplifies the screening and linkage to HCV care pathways for PWUD on the Balearic Islands.

METHODS AND ANALYSIS

This intervention study will be implemented across 17 sites, in 4 different settings: addiction service centres (n=12), non-governmental organisation centres (n=3), a mobile methadone unit and a prison, with an estimated 3725 participants. Together with the healthcare staff at each centre, the intervention protocols will be adapted, focusing on four phases: recruitment and testing; linkage to care; treatment for those who test positive; and monitoring of sustained virological response 12 weeks after treatment and reinfection. The primary outcomes will be the number of tested and treated individuals and the secondary outcomes will include individuals lost at each step in the cascade of care. Descriptive analysis and multivariable logistic regression of the data will be undertaken.

ETHICS AND DISSEMINATION

The Hospital Clínic Barcelona, Spain, Ethics Committee approved this study on 18 February 2021 (HCB/2020/2018). Findings will be disseminated through peer-reviewed publications, conference presentations and social media. The results of this study could provide a model for targeting PWUD for HCV testing and treatment in the rest of Spain and in other settings, helping to achieve the WHO HCV elimination goal.

A hepatitis C elimination model in healthcare for the homeless organization: A novel reflexive laboratory algorithm and equity assessment

BACKGROUND

Reaching World Health Organization hepatitis C (HCV) elimination targets requires diagnosis and treatment of people who use drugs (PWUD) with direct acting antivirals (DAAs). PWUD experience challenges engaging in HCV treatment, including needing multiple provider and laboratory appointments. Women, minoritized racial communities, and homeless individuals are less likely to complete treatment.

METHODS

We implemented a streamlined opt-out HCV screening and linkage-to-care program in two healthcare for the homeless clinics and a medically supported withdrawal center. Front-line staff initiated a single-order reflex laboratory bundle combining screening, confirmation, and pre-treatment laboratory evaluation from a single blood draw. Multinomial logistic regression models identified characteristics influencing movement through each stage of the HCV treatment cascade. Multiple logistic regression models identified patient characteristics associated with HCV care cascade progression and Cox proportional hazards models assessed time to initiation of DAAs.

RESULTS

Of 11,035 clients engaged in services between May 2017 and March 2020, 3,607 (32.7%) were screened. Of those screened, 1,020 (28.3%) were HCV PCR positive. Of those with detectable RNA, 712 (69.8%) initiated treatment and 670 (94.1%) completed treatment. Of those initiating treatment, 407 (57.2%) achieved SVR12. There were eight treatment failures and six reinfections. In the unadjusted model, the bundle intervention was associated with increased care cascade progression, and in the survival analysis, decreased time to initiation; these differences were attenuated in the adjusted model. Women were less likely to complete treatment and SVR12 labs than men. Homelessness increased likelihood of screening and diagnosis but was negatively associated with completing SVR12 labs. Presence of opioid and stimulant use disorder diagnoses predicted increased care cascade progression.

CONCLUSIONS

The laboratory bundle and referral pathways improved treatment initiation, time to initiation, and movement across the cascade. Despite overall population improvements, women and homeless individuals experienced important gaps across the HCV care cascade.

Detection of active hepatitis C in a single visit and linkage to care among marginalized people using a mobile unit in Madrid, Spain

BACKGROUND

The burden of hepatitis C virus (HCV) infection among marginalized people in Spain is high, despite the fact that HCV prevalence has decreased in recent years. We aimed to assess the effectiveness of a simplified point-of-care (PoC) model for screening for active HCV infection via a mobile unit and subsequent linkage to care with the assistance of navigators.

METHODS

We carried out a prospective study on 2001 participants from Madrid, Spain. A nurse and a navigator/educator screened for hepatitis C in a mobile unit, using the OraQuick HCV Rapid Antibody Test and Xpert HCV VL Fingerstick assay. Participants with active HCV were referred to the hospital the same day with a navigator for evaluation and treatment of HCV.

RESULTS

Overall, 1621 (81%) participants had not been exposed to HCV, 380 (18.9%) were positive for HCV antibodies, and 136 (6.8%) had active hepatitis C. Among the latter, 134 (98.5%) received the HCV screening results, 133 (97.8%) had an appointment at the hospital, 126 (92.8%) were seen by a physician once they were at the hospital, and 105 (77.2%) started HCV treatment. Being over 50 years old and a person who uses drugs, particularly people who inject drugs (PWID), was directly associated with active hepatitis C (p<0.05). PWID were the only patients with HCV reinfection (4.3% in people without recent injecting drug use and 5.9% in people with recent injecting drug use). Among PWID, no income and daily alcohol intake were also directly associated with active hepatitis C. People with recent injecting drug use showed the lowest rates of attendance at the hospital (91.8%) and starting HCV treatment (70.4%).

CONCLUSION

HCV screening using a two-step PoC-based strategy and its linkage to care was extremely efficient for identifying and treating marginalized people with active hepatitis C, thanks to the use of a mobile unit with personnel and technical equipment, an interdisciplinary team, and collaboration between institutions.

Barriers to hepatitis C treatment among secondary needle and syringe program clients and opportunities to intervene

BACKGROUND

At least 160,000 Australians are living with hepatitis C (HCV), many of whom are people who inject drugs and access needle and syringe programs (NSP). Secondary NSPs provide injecting equipment via health services that are not dedicated to the provision of services to people who inject drugs; these sites could be a suitable space to increase engagement of people who inject drugs in HCV treatment. Drawing on data from a pilot study exploring the potential of upscaling linkage to HCV care in secondary NSPs, the aim of this research was to explore barriers and enablers to HCV treatment for clients who use these services.

METHODS

We interviewed 34 people who inject drugs (who self-reported HCV positivity) from six secondary NSPs in urban and regional Victoria, Australia in 2018. Fifty per cent were male, with ages ranging from 33 to 58. Twenty-two (65%) had never received HCV treatment and none had experience with direct-acting antiviral (DAA) treatment. Interviews were transcribed and analysed thematically. Field notes from a program evaluation with feedback from secondary NSP staff was also used as a secondary data source.

RESULTS

Five themes encompassing a set of contrasting barriers and enablers to accessing HCV care through secondary NSPs were uncovered. Themes included 'misinformation' vs. 'multiple trusted information sources; 'lack of symptoms and motivation' vs. 'benefits of cure'; 'competing priorities' vs. 'willingness and readiness to be cured'; 'unsupportive relationships with staff' vs. 'supportive relationships with staff'; and 'inaccessibility and stigma in health services' vs. 'enhanced support'. Secondary program evaluation data also highlighted that secondary NSP staff were under-resourced and had limited capacity to implement HCV care linkage and information.

CONCLUSION

We identified contrasting barriers and opportunities for accessing DAAs among a sample of secondary NSP clients and staff. Interventions that consider individual, provider and health system level factors are needed if secondary NSP services are to become a suitable setting to initiate conversations with clients around HCV treatment and provide linkages to care.

Reducing Read Time of Point-of-Care Test Does Not Affect Detection of Hepatitis C Virus and Reduces Need for Reflex RNA

BACKGROUND & AIMS

Global elimination of hepatitis C virus (HCV) will require increases in diagnosis. Point of care (POC) tests that detect antibodies against HCV can be useful for testing large and difficult to reach populations. The most accurate POC test requires a 20 min read time to identify antibody-positive samples. We investigated whether viremic patients could be identified using a shorter read time, to increase efficiency and reduce the need for reflex tests (a follow-up test for HCV RNA on the same specimen to confirm viremia).

METHODS

Patients with past or current HCV infections provided samples at 2 clinics in Canada for evaluation by the OraQuick HCV Rapid antibody POC test. A community HCV-screening program in Madrid, Spain (real-world cohort) invited people to be tested for HCV with the same OraQuick test. Patients provided samples of whole blood, via finger prick. Fingerprick samples were tested immediately after collection. In the clinic cohort, photographs of the developing test were taken at 15 second intervals, and blinded readers recorded the time to positivity. In the real-world cohort, readers recorded the OraQuick result at 5 minutes, and each minute after, up to 10 minutes, and then again at 20 minutes; viremia was then evaluated using a POC HCV RNA test (GeneXpert HCV Viral Load Assay). Sera from viremic and non-viremic clinic patients were used to quantify antibody titers to investigate the relationship between the time of band appearance and antibody concentration. Fisher's exact test and exact logistic regression were used to determine factors associated with a positive result at 5 minutes.

RESULTS

Blood from all viremic patients produced a positive result in the antibody POC test by 5 min. Median time to a positive result for 171 viremic patients was 2.6 min (range, 1.8-4.6 min), vs 4.1 min (range, 2.3-14.4 min) for 108 patients with resolved infection (P < .001). The 5-min threshold identified all viremic cases among 176 HCV antibody-positive patients in the real-world cohort, confirmed by testing for HCV RNA. In the pooled cohorts, antibody positivity at 5 min identified viremic patients with 100% sensitivity (95% CI, 98.4%-100%); the negative predictive value was 100% (95% CI, 94.9%-100%). The positive predictive value at 5 min was 62.0% (95% CI, 56.7%-67.0%) and therefore insufficient alone to detect viremia; an HCV RNA test would still be necessary to confirm active infection.

CONCLUSIONS

The wait time for the OraQuick HCV Rapid antibody POC blood test can be reduced from 20 min to 5 min and continue to reliably identify patients with HCV infection. Shortening the test time could increase high-throughput screening, reduce loss to follow up, and reduce the need for reflex HCV RNA testing.

Community-Based Assessment and Treatment of Hepatitis C Virus-Related Liver Disease, Injecting Drug and Alcohol Use Amongst People Who Are Homeless: A Systematic Review and Meta-Analysis

BACKGROUND/AIMS

We performed a systematic review and meta-analysis addressing community-based assessment and treatment of hepatitis C virus (HCV)-related liver disease, injecting drug use (IDU) and alcohol use amongst people who are homeless (PWAH).

METHODS

Using systematic review methodology, databases were searched (MEDLINE/ EMBASE/CINAHL) for studies combining PWAH, HCV-related liver disease and community assessment until December 2019. Studies with a sample size ≥ 30, with PWAH constituting at least 30% of the cohort were included and a quality assessment performed. Pooled estimates of key indicators were analysed using meta-analysis.

RESULTS

We identified 39 studies (n = 13,918), 37 categorised as poor quality (Newcastle-Ottawa Scale). Prevalence of homelessness ranged between 30%-100% (37 studies). Eight studies provided all of the following: HCV screening, alcohol/substance use/liver fibrosis assessment and HCV treatment. No study provided interventions for alcohol use, with two providing opioid substitution treatment. Alcohol use prevalence (24 studies) was 4%-97%, being 59% (95% CI 20%-92%) in four studies that included only PWAH. Recent IDU prevalence (16 studies) was 7%-73%, being 21% (95% CI 17%-26%) in four studies that included only PWAH. HCV seroprevalence (25 studies) was 2.5% - 58%; in 13 studies that included only PWAH, this was 20% (95% CI 12%-30%). Prevalence of F4 fibrosis (nine studies) was 6%-28%, being 7% and 16% in two studies that included only PWAH. Direct acting antiviral-based intention-to-treat sustained virological response (SVR) rates (five studies) were 82%-92%, being 92% in the one study that included only PWAH. In the only two randomised controlled trials (RCT) identified, community-based interventions (mental health/peer mentor) significantly increased linkage to care (p = 0.04), HCV treatment (p = 0.005) and SVR rates (p = 0.018).

CONCLUSION

The burden from alcohol/IDU and HCV, and consequently liver disease in PWAH needs addressing. RCT trials assessing community-based interventions to improve liver health in PWAH are needed.

Opportunities to enhance linkage to hepatitis C care among hospitalised people with recent drug dependence in New South Wales, Australia: A population-based linkage study

BACKGROUND

People who inject drugs are at greater risk of hepatitis C virus (HCV) infection and hospitalisation, yet admissions are not utilised for HCV treatment initiation. We aimed to assess the extent to which people with HCV notification, including those with evidence of recent drug dependence, are hospitalised while eligible for direct-acting antiviral (DAA) therapy, and treatment uptake according to hospitalisation in the DAA era.

METHODS

We conducted a longitudinal, population-based cohort study of people living with HCV in the DAA era (March 2016-December 2018) through analysis of linked databases in New South Wales, Australia. Kaplan Meier estimates were used to report HCV treatment uptake by frequency, length, and cause-specific hospitalisation.

RESULTS

Among 57,467 people, 14,938 (26%) had evidence of recent drug dependence, 50% (n=7,506) of whom were hospitalised while DAA eligible. Incidence of selected cause-specific hospitalisation was highest for mental health-related (15.84 per 100 person-years [PY]), drug-related (15.20 per 100PY), and injection-related infectious disease (9.15 per 100PY) hospitalisations, and lowest for alcohol use disorder (4.58 per 100PY) and liver-related (3.13 per 100PY). 65% (n=4,898) of those hospitalised had been admitted >2 times and 46% (n=3,437) were hospitalised >7 days. By the end of 2018, DAA therapy was lowest for those hospitalised >2 times, for >7 days, and those whose first admission was for injection-related infectious disease, mental health disorders, and drug-related complications.

CONCLUSIONS

Among people who have evidence of recent drug dependence, frequent hospitalisation-particularly mental health, drug, and alcohol admissions-presents an opportunity for engagement in HCV care.

Elimination of hepatitis C among HIV-positive population in Asia: old and new challenges

Hepatitis C virus (HCV) prevalence is high among people living with HIV co-infected with HCV, people who inject drugs, men who have sex with men and inmates in correctional settings. The barriers to eliminate HCV among these key populations include diagnosis challenges, lack of awareness, discrimination and stigmatization. In addition, scaling up of HCV treatment has been a challenge in Asia–Pacific with the lack of national policies, targets and unavailability of appropriate direct-acting antivirals regimens. In order to achieve HCV micro elimination within these high-risk populations, novel strategies to improve the cascade of care from diagnosis to treatment with direct-acting antivirals, complemented by behavioral change interventions, harm reduction services for people who inject drugs, civil society led advocacy and policies from the government, will be necessary.

Rapid point-of-care (POC) testing for Hepatitis C antibodies in a very high prevalence setting: persons injecting drugs in Tallinn, Estonia

BACKGROUND

Between December 2018 and January of 2019, we evaluated the accuracy of the point-of-care Hepatitis C (HCV) antibody test (POC; OraQuick HCV) used at a community-based needle and syringe exchange program serving persons who inject drugs in Tallinn, Estonia.

METHODS

We compared the results of screening for HCV antibodies by OraQuick (oral swab) and enzyme immunoassay (EIA; blood draw) and assessed test results implications in a high prevalence setting. Findings Of the 100 participants, 88 (88%) had reactive POC test results, and 93 were HCV antibody positive on EIA testing. Sensitivity, specificity and negative predictive value (NPV) for the POC assay with EIA as the relevant reference test were as follows: 94.6% (95% CI 90.0-99.2%), 100% and 58.3% (95% CI 30.4-86.2%). Of the 12 testing, HCV-negative with the POC only 7 (58.3%) were true negatives.

CONCLUSIONS

Oral swab rapid testing HCV screening in this nonclinical setting was sensitive and specific but had unacceptably low NPV. In high prevalence settings, POC tests with high sensitivity and that directly measure HCV RNA may be warranted.

Innovations in Hepatitis C Screening and Treatment

New therapies offer hope for a cure to millions of persons living with hepatitis C virus (HCV) infection. HCV elimination is a global goal that will be difficult to achieve using the traditional paradigms of diagnosis and care. The current standard has evolved toward universal HCV screening and treatment, to achieve elimination goals. There are several steps between HCV diagnosis and cure with major barriers along the way. Innovative models of care can address barriers to better serve hardly reached populations and scale national efforts in the United States and abroad. Herein, we highlight innovative models of HCV care that aid in our progress toward HCV elimination.

Reasons for Not Seeking Hepatitis C Treatment among People Who Inject Drugs

Despite increases in treatment uptake for hepatitis C viral infection (HCV) in Australia since the introduction of direct acting antiviral (DAA) therapy, a large proportion of HCV-infected people who inject drugs (PWID) have not sought treatment. Purpose/Objectives: To examine predictors of treatment uptake and reasons for not seeking treatment among PWID. Methods: PWID (n = 404) recruited through five needle and syringe programs in South East Queensland were interviewed about HCV testing, status and treatment, recent injecting drug use, mental health and reasons for not taking up treatment. Predictors of treatment uptake were examined using unadjusted and adjusted logistic regression analyses. Proportions were calculated for participants reporting each reason for not taking up treatment. Results: We recruited 404 PWID. Of those tested for HCV (94%), 55% were HCV antibody positive and 31% with active infection. Approximately 36% of eligible participants had begun or completed DAA treatment. In adjusted analyses, injecting drugs three or more times per day was associated with not taking up HCV treatment (p = 0.005). Common reasons for not seeking treatment ("applied a lot") included experiencing no HCV-related symptoms (25%), HCV treatment not being a priority (23%), fear of treatment side effects (18%), and no knowledge of DAA treatments (15%). Conclusions/Importance: HCV education efforts for PWID should target misperceptions and lack of awareness of DAA therapy, and highlight the likely benefits of treatment even when asymptomatic. The use of peer workers and increased investment in integrated treatment facilities will likely aid treatment uptake.

Point-of-Care Tests for Hepatitis B: An Overview

Despite the heavy disease burden posed by hepatitis B, around 90% of people living with hepatitis B are not diagnosed globally. Many of the affected populations still have limited or no access to essential blood tests for hepatitis B. Compared to conventional blood tests which heavily rely on centralised laboratory facilities, point-of-care testing for hepatitis B has the potential to broaden testing access in low-resource settings and to engage hard-to-reach populations. Few hepatitis B point-of-care tests have been ratified for clinical use by international and regional regulatory bodies, and countries have been slow to adopt point-of-care testing into hepatitis B programs. This review presents currently available point-of-care tests for hepatitis B and their roles in the care cascade, reviewing evidence for testing performance, utility, acceptability, costs and cost-effectiveness when integrated into hepatitis B diagnosis and monitoring programs. We further discuss challenges and future directions in aspects of technology, implementation, and regulation when adopting point-of-care testing in hepatitis B programs.

A randomized pilot study assessing the acceptability of rapid point-of-care hepatitis C virus (HCV) testing among male inmates in Montreal, Canada

BACKGROUND

The Oraquick^Ⓡ fingerprick point-of-care hepatitis C virus antibody (HCV-Ab) test is favoured to venipuncture among people who inject drugs; however, its acceptability in prison populations is unknown. We aimed to compare the acceptability of the Oraquick^Ⓡ versus standard venipuncture among people in prison.

METHODS

From October to December 2019, 280 sentenced male inmates at L'Établissement de Détention de Montréal (Quebec, Canada) were screened for participation, 150 excluded due to prior HCV screening, and 52 refused participation. The remaining 78 were randomized 1:1 to opt-out HCV-Ab screening with OraQuick^Ⓡ or venipuncture (n = 39 each). Acceptability was determined by the proportion accepting to undergo screening.

RESULTS

The majority of participants (median age 33 years) reported a history of drug use (76%; 8% injection drug use); 47% perceived their HCV risk to be moderate/high. All inmates randomized to Oraquick^Ⓡ accepted testing while 87% accepted venipuncture. Among those who accepted Oraquick^Ⓡ vs. venipuncture, 100% vs. 97% were satisfied with the test, 97% vs. 94% would recommend the same test, and 100% vs. 76% would choose the same test again.

CONCLUSION

Adult incarcerated men in Canada were both more likely to accept Oraquick^Ⓡ compared to venipuncture, and to choose Oraquick^Ⓡ for future HCV screening.

Assessing Molecular Point-of-Care Testing and Dried Blood Spot for Hepatitis C Virus Screening in People Who Inject Drugs

Background

Injecting drug use is a major driver of hepatitis C virus (HCV) spread worldwide, and the World Health Organization (WHO) has identified people who inject drugs (PWID) as a key population to target for HCV screening and care. Point-of-care (POC) hepatitis C tests and dried blood spot (DBS) sampling offer benefits for the management of patients with HCV infection by increasing HCV testing and linkage to care in different nonclinical settings. The aims of this prospective study were to evaluate the feasibility and the acceptability of use HCV ribonucleic acid (RNA) POC and fingerstick DBS testing in social-medical risk-reduction centers and to describe the cascade of care among PWID in France.

Methods

Between June 2018 and February 2019, 89 consecutive HCV-seropositive PWID attending 2 drug treatment services and 1 supervised consumption room in inner Paris were invited to participate in further evaluation, undergoing a clinical review with a liver assessment and blood tests including fingerstick capillary whole blood POC HCV RNA testing and fingerstick DBS sampling.

Results

Of the 89 participants enrolled, HCV RNA was detected in 34 (38.6%) participants. Fingerstick whole blood POC RNA testing and HCV RNA detection from DBS sample were feasible and acceptable among PWID with no major difference in terms of HCV RNA detection rate. Overall, 16 participants received pan-genotypic antiviral treatment. The proportion of PWID with sustained virologic response at 12 weeks was 81.2%, with data for 3 patients still pending.

Conclusions

One-step screening strategy based on the detection of HCV RNA would engage people in care for treatment scale-up and HCV elimination.

Australia needs to increase testing to achieve hepatitis C elimination

Objectives

To assess progress in Australia toward the 2030 WHO hepatitis C elimination targets two years after the introduction of highly effective direct‐acting antiviral (DAA) treatments.

Design

Analysis of quarterly data on government‐subsidised hepatitis C RNA testing and hepatitis C treatment in Australia, January 2013 – June 2018. Changes in testing and treatment levels associated with DAA availability were assessed in an autoregressive integrated moving average (ARIMA) statistical model, and the impact by 2030 of different levels of testing and treatment were estimated using a mathematical model.

Major outcome measures

Hepatitis C prevalence among people who inject drugs; annual hepatitis C incidence relative to 2015 levels; projections for the hepatitis C care cascade in 2030.

Results

The mean annual number of treatments initiated for people with hepatitis C increased from 6747 during 2013–2015 (before the introduction of DAAs) to 28 022 during 2016–18; the mean annual number of diagnostic RNA tests increased from 17 385 to 23 819. If current trends in testing and treatment continue (ie, 2018 testing numbers are maintained but treatment numbers decline by 50%), it is projected that by 2030 only 72% of infected people would be treated (by 2025 all people diagnosed with hepatitis C would be treated). The incidence of hepatitis C in 2030 would be 59% lower than in 2015, well short of the WHO target of an 80% reduction. The identification and testing of people exposed to hepatitis C must be increased by at least 50% for Australia to reach the WHO elimination targets.

Conclusion

Hepatitis C elimination programs in Australia should focus on increasing testing rates and linkage with care to maintain adequate levels of treatment.

Elimination of hepatitis C virus infection among people who use drugs: Ensuring equitable access to prevention, treatment, and care for all

There have been major strides towards the World Health Organization goal to eliminate hepatitis C virus (HCV) infection as a global public health threat. The availability of simple, well-tolerated direct-acting antiviral therapies for HCV infection that can achieve a cure in >95% of people has provided an important tool to help achieve the global elimination targets. Encouragingly, therapy is highly effective among people receiving opioid agonist therapy and people who have recently injected drugs. Moving forward, major challenges include ensuring that new infections are prevented from occurring and that people who are living with HCV are tested, linked to care, treated, receive appropriate follow-up, and have equitable access to care. This editorial highlights key themes and articles in a special issue focusing on the elimination of HCV among people who inject drugs. An overarching consideration flowing from this work is how to ensure equitable access to HCV treatment and care for all. This special issue maps the field in relation to: HCV prevention; the cascade of HCV care; strategies to enhance testing, linkage to care, and treatment uptake; and HCV treatment and reinfection. In addition, papers draw attention to the 'risk environments' and socio-ecological determinants of HCV acquisition, barriers to HCV care, the importance of messaging around the side-effects of new direct-acting antiviral therapies, the positive transformative potential of treatment and cure, and the key role of community-based drug user organizations in the HCV response. While this special issue highlights some successful efforts towards HCV elimination among people who inject drugs, it also highlights the relative lack of attention to settings in which resources enabling elimination are scarce, and where elimination hopes and potentials are less clear, such as in many low and middle income countries. Strengthening capacity in areas of the world where resources are more limited will be a critical step towards ensuring equity for all so that global HCV elimination among PWID can be achieved.