Real-World Efficacy and Safety of Universal 8-Week Glecaprevir/Pibrentasvir for Treatment-Naïve Patients from a Nationwide HCV Registry in Taiwan

INTRODUCTION

Eight-week glecaprevir/pibrentasvir (GLE/PIB) is indicated for treatment-naïve (TN) patients with chronic hepatitis C (CHC), with or without compensated cirrhosis. Given that the Taiwanese government is committed to eliminating hepatitis C virus (HCV) by 2025, this study aimed to measure real-world evidence for TN patients using 8-week GLE/PIB in the Taiwan HCV Registry (TACR).

METHODS

The data of patients with CHC treated with 8-week GLE/PIB were retrieved from TACR, a nationwide registry program organized by the Taiwan Association for the Study of the Liver (TASL). Treatment efficacy, defined as a sustained virologic response at posttreatment week 12 (SVR12), was assessed in the modified intention-to-treat (mITT) population, which excluded patients who were lost to follow-up or lacked SVR12 data. The safety profile of the ITT population was assessed.

RESULTS

A total of 7246 (6897 without cirrhosis; 349 with cirrhosis) patients received at least one dose of GLE/PIB (ITT), 7204 of whom had SVR12 data available (mITT). The overall SVR12 rate was 98.9% (7122/7204) among all patients, 98.9% (6780/6856) and 98.3% (342/348) among patients without and with cirrhosis, respectively. For the selected subgroups, which included patients with genotype 3 infection, diabetes, chronic kidney disease, people who injected drugs, and those with human immunodeficiency virus coinfection, the SVR12 rates were 95.1% (272/286), 98.9% (1084/1096), 99.0% (1171/1183), 97.4% (566/581), and 96.1% (248/258), respectively. Overall, 14.1% (1021/7246) of the patients experienced adverse events (AEs). Twenty-two patients (0.3%) experienced serious AEs, and 15 events (0.2%) resulted in permanent drug discontinuation. Only one event was considered treatment drug related.

CONCLUSION

Eight-week GLE/PIB therapy was effective and well tolerated in all TN patients, regardless of cirrhosis status.

[Liver transplantation in viral and autoimmune liver diseases]

BACKGROUND

Despite substantial progress in the management of viral and autoimmune liver diseases, these entities remain relevant indications for liver transplantation.

AIMS

To provide an overview of the current knowledge regarding the management of viral and autoimmune liver diseases before and after liver transplantation.

MATERIALS AND METHODS

Selective literature search, including current guidelines and abstracts of key scientific meetings.

RESULTS AND DISCUSSION

Viral and autoimmune liver disease can be effectively treated in most cases, which has resulted in an overall decline in liver transplantations for this indication group. However, hepatitis D infection and primary sclerosing cholangitis remain difficult-to-treat liver diseases in some patients and may progress to end-stage liver disease despite best possible management. Viral or autoimmune hepatitis can lead to fulminant liver failure requiring emergency liver transplantation. In patients who are transplanted due to viral or autoimmune liver disease, specific measures to prevent recurrence of these diseases after transplantation are mandatory. In view of effective treatment modalities for chronic hepatitis B and C, even liver grafts from donors infected with these viruses can be considered for liver transplantation under certain circumstances.

Pursuing Elimination of Hepatitis C in Egypt: Cost-Effectiveness and Economic Evaluation of a Country-Wide Program

Introduction

Hepatitis C virus (HCV) is a global public health crisis. Egypt presents the highest HCV global prevalence. Recently, three different HCV screening/testing/therapy programs were implemented: In 2014 (wave 1), major decisions on HCV therapy were enacted, accompanied by a 99% discount for the HCV therapy sofosbuvir. In 2016 (wave 2), a first testing program was launched to identify patients for free treatment. In 2018 (wave 3), population-wide screening was conducted using a WHO-prequalified finger prick rapid diagnostic test (RDT) to identify/treat all Egyptians with HCV. The financial advantages of HCV screening programs (wave 1–3 results) were estimated vs a baseline period of limited Egyptian HCV testing/therapeutic intervention (2008–2014).

Methods

Using published evidence and model-based estimates from real-world data, we evaluated the direct costs of the different HCV programs, accompanied by a conservative simulation of major HCV health consequences (i.e., liver-related deaths/life years lost) and related indirect costs. Total economic consequences of each HCV program were compared to each other and baseline from a societal perspective. Future costs and health effects were discounted by 3.5% per year.

Results

Discounted total costs (in US dollars) were $1,057 billion (baseline), $913 million (wave 1), $457 million (wave 2), and $396 million (wave 3). Discounted HCV-related life years lost were 418,000 (baseline), 377,000 (wave 1), 142,000 (wave 2), and 62,000 (wave 3). With each successive Egyptian HCV screening/testing/therapy wave, total costs and HCV-related mortality were reduced.

Conclusion

Use of the community-applied, WHO-prequalified RDT was the most dominant approach to cost-effectiveness. These results provide rationale for worldwide scalability of similar HCV elimination programs.

[Epidemiology of viral hepatitis A to E in Germany]

Viral hepatitis A to E describes various infectious inflammations of the liver parenchyma that are caused by the hepatitis viruses A to E (HAV, HBV, HCV, HDV, and HEV). Although the clinical pictures are similar, the pathogens belong to different virus families and differ in terms of pathogenesis, transmission routes, clinical course, prevention, and therapy options. In Germany, there is mandatory reporting according to the Infection Protection Act (IfSG) for direct or indirect laboratory evidence and for suspicion, illness, and death of viral hepatitis. The data are transmitted to the Robert Koch Institute.In this article, on the basis of published studies and notification data, we describe the epidemiology of hepatitis A to E as well as current challenges and prevention approaches. In particular, the latter contains the improvement of existing vaccination recommendations (hepatitis A and B); improvement of access to prevention, testing, and care including therapy with antiviral drugs (hepatitis B, C, and D) and the detection and prevention of foodborne infections and outbreaks; and improvements in the field of food safety (hepatitis A and E).

Sofosbuvir/Velpatasvir for Hepatitis C Virus Infection: Real-World Effectiveness and Safety from a Nationwide Registry in Taiwan

INTRODUCTION

Pangenotypic direct-acting antivirals are expected to cure hepatitis C virus (HCV) in more than 95% of treated patients. However, data on the effectiveness and safety of sofosbuvir/velpatasvir (SOF/VEL) in Taiwan are limited. This study aims to characterize the patient population in the nationwide Taiwan Association for the Study of the Liver (TASL) HCV Registry and evaluate treatment outcome in Taiwanese patients receiving SOF/VEL.

METHODS

This study was a retrospective-prospective, observational, multicenter, real-world analysis. Adults with chronic hepatitis C were treated with SOF/VEL 400/100 mg ± ribavirin for 12 weeks. The primary outcome was sustained virologic response 12 weeks after end of therapy (SVR12). Factors associated with not achieving SVR12 were evaluated using logistic regression and covariate analysis. Safety was also assessed.

RESULTS

In total, 3480 patients were included: 86.8% genotype 1/2, 2.8% genotype 3, 0.1% genotype 4/5, 9.6% genotype 6; unclassified, 0.8%; 12.2% compensated cirrhosis; 3.3% decompensated cirrhosis; and 15.8% chronic kidney disease. Overall SVR12 rate was 99.4% (genotype 1, 99.5%; genotype 2, 99.4%; genotype 3, 96.9%; genotype 4, 100%; genotype 6, 99.7%). SVR12 rates among patients with compensated cirrhosis, decompensated cirrhosis, and chronic kidney disease stages 4-5 were 99.5%, 100%, and 100%, respectively. There were 21 patients (0.6%) who did not achieve SVR12. Factors associated with failure were treatment adherence below 60%, high viral load, and genotype 3 (p < 0.001, p = 0.028, and p = 0.001, respectively). Adverse events occurred in 10% of patients; 0.6% were serious and one was related to treatment. Treatment discontinuation occurred in 0.3% of patients; none were treatment related. The estimated glomerular filtration rate remained stable throughout treatment and follow-up, regardless of baseline values and cirrhosis status.

CONCLUSION

SOF/VEL was highly effective and well tolerated in Taiwanese patients, irrespective of viral genotype, liver disease severity, and comorbidities.

Real-World Outcomes in Historically Underserved Patients with Chronic Hepatitis C Infection Treated with Glecaprevir/Pibrentasvir

Introduction

Glecaprevir/pibrentasvir is approved for treating chronic hepatitis C virus (HCV) genotypes (GT) 1–6. We evaluated real-world effectiveness, safety, and patient-reported outcomes of glecaprevir/pibrentasvir in underserved patient populations, focusing on persons who use drugs infected with HCV.

Methods

Data were pooled from nine countries (13 November 2017–31 January 2020). Patients had HCV GT1–6, with or without compensated cirrhosis, with or without prior HCV treatment and received glecaprevir/pibrentasvir consistent with local label at their physician’s discretion. Patients with prior direct-acting antiviral exposure were excluded from efficacy and quality-of-life analyses. The percentage of patients achieving sustained virologic response at post-treatment week 12 (SVR12) was assessed. Mean changes from baseline to SVR12 visit in 36-Item Short-Form Health Survey mental and physical component summary scores were reported. Safety was assessed in patients receiving at least one dose of glecaprevir/pibrentasvir.

Results

Of 2036 patients, 1701 (83.5%) received 8-week glecaprevir/pibrentasvir. In 1684 patients with sufficient follow-up, SVR12 rates were 98.0% (1651/1684) overall, 98.1% (1432/1459) in 8-week treated patients, 97.0% (519/535) in persons who use drugs, and greater than 95% across subgroups. Mean changes from baseline in mental and physical component summary scores were 3.7 and 2.4, respectively. One glecaprevir/pibrentasvir-related serious adverse event was reported; six glecaprevir/pibrentasvir-related adverse events led to discontinuation.

Conclusions

Glecaprevir/pibrentasvir was highly effective, well tolerated, and improved quality of life in HCV-infected persons who use drugs and other underserved patients.

Trial Registration

These multinational post-marketing observational studies are registered with ClinicalTrials.gov, number NCT03303599.

Supplementary Information

The online version contains supplementary material available at 10.1007/s40121-021-00455-1.

Estimating the Year Each State in the United States Will Achieve the World Health Organization's Elimination Targets for Hepatitis C

Introduction

Although hepatitis C virus (HCV) infection remains a major clinical, economic, and societal burden, the development of curative antiviral therapy may accelerate the path toward elimination. This analysis assessed the progress of United States (US) states towards achieving the World Health Organization’s (WHO) 2030 HCV elimination targets for incidence, mortality, diagnosis, and treatment.

Methods

A previously published Markov model was used to simulate HCV progression over time to estimate the path to HCV elimination in each state based on prevalence, annual treatment, and diagnosis inputs from two large US laboratory datasets from January 2013 to December 2017. State-specific fibrosis stage restrictions on treatment in 2017 were included. The model estimated the year individual states would meet the WHO targets for diagnosing 90% of the HCV-infected population, treating 80% of the eligible population, reducing new HCV infections by 80%, and reducing HCV-related deaths by 65%. The minimum number of annual treatments needed between 2020 and 2030 to achieve the WHO treatment target was also calculated.

Results

Overall, the USA is projected to achieve HCV elimination by 2037, with individual targets related to mortality, diagnosis, treatment, and incidence being achieved by 2020, 2027, 2033, and 2037, respectively. Three states (Connecticut, South Carolina, and Washington) are on track to meet all four elimination targets by 2030, and 18 states are not expected to meet these targets before 2040. The estimated annual number of treatments required during 2020–2030 nationally to reach the WHO treatment target is 173,514.

Conclusion

With the exception of three states, the USA is not on target to meet the WHO 2030 elimination targets and 35% are off track by 10 years or more. Strategies must be implemented to reduce overall prevalence by preventing new infections, increasing rates of screening, improving linkage to care, and implementing unfettered access to curative therapy.

Electronic supplementary material

The online version of this article (10.1007/s12325-020-01535-3) contains supplementary material, which is available to authorized users.

Emerging Viral and Bacterial Infections: Within an Era of Opioid Epidemic

The opioid epidemic is a public health crisis that continues to impact healthcare in the United States of America (USA). While changes in opioid prescribing have curbed the medical use of opioids, the increase in nonmedical use, largely driven by injection drug use (IDU), has contributed to the escalating incidence of opioid use disorder (OUD). Furthermore, IDU is associated with high-risk injection practices that can increase the risk of acquiring viral and bacterial infections. Here in this comprehensive review, we aimed to summarize the epidemiology and management of OUD, along with the screening and antimicrobial treatment of associated infections, specifically focused on human immunodeficiency virus, hepatitis C virus, skin and soft tissue infections, endocarditis, and osteomyelitis. Medication-assisted therapy (MAT) and infection guidelines from the USA will be presented.

Real-World Clinical Practice Use of 8-Week Glecaprevir/Pibrentasvir in Treatment-Naïve Patients with Compensated Cirrhosis

INTRODUCTION

More than 70 million people are estimated to be infected with hepatitis C virus globally. Glecaprevir/pibrentasvir is a widely used treatment and has recently been approved for an 8-week regimen for treatment-naïve patients with compensated cirrhosis in Europe and the USA, who would previously have received glecaprevir/pibrentasvir for 12 weeks. This label update was based on the EXPEDITION-8 study, which included 343 treatment-naïve patients with compensated cirrhosis. However, there is currently a lack of similarly large-scale real-world studies of the 8-week glecaprevir/pibrentasvir regimen in this population.

METHODS

This summary of seven separate smaller real-world studies aims to validate the results seen in EXPEDITION-8 and provide an up-to-date real-world reference for clinicians making treatment decisions for patients with compensated cirrhosis (Child-Pugh A) who may benefit from a shorter-duration therapy with glecaprevir/pibrentasvir. The newly emerging real-world effectiveness data on treatment-naïve patients with compensated cirrhosis treated with 8 weeks of glecaprevir/pibrentasvir help to understand where further research is needed to support patients with hepatitis C virus.

RESULTS

Across all seven studies, glecaprevir/pibrentasvir showed high effectiveness with an average sustained virologic response rate of 98.1%, similar to that found in a clinical trial setting (99.7%). Only one patient (0.5%) experienced virologic failure and treatment was well tolerated.

CONCLUSION

Expanding the number of patients eligible for the shortened treatment duration will potentially increase treatment initiation and completion, particularly in underserved populations, contributing to the elimination of hepatitis C virus.

[High-risk needlestick injuries and virus transmission : A prospective observational study]

BACKGROUND

Needlestick injuries (NSI) of healthcare personnel (HCP) are work-related accidents with a risk of transmission of blood-borne human immunodeficiency virus (HIV), hepatitis B and C viruses (HBV, HCV). Along with preventive measures to avoid accidental NSI, preventing the risk and diagnosis of an infection from NSI are given a high priority. Thus, follow-up monitoring of NSI is of great interest.

OBJECTIVE

Evaluation of the follow-up monitoring after NSI with respect to early recognition of transmission of HIV, HCV and HBV as well as adherence and psychological burden of HCP.

METHODS

Clinical and serological investigations of the injured HCP including determining the individual risk of infection in the situation of NSI, analysis of accident protocols by the accident insurance consultant and use of a self-developed standardized questionnaire.

RESULTS

No virus transmissions from NSI were found during the observation period (23 March 2014 until 31 October 2017). A total of 112 NSI with infectious index patients (HIV 35.7%, HCV 54.5%, HBV 2.7%, coinfection 7.1%) and 3 incidents from unknown index patients were analyzed. Of the index patients six received the first diagnosis of a blood-borne infection (2 HCV infections, 4 HIV infections) after NSI. In nearly all incidents (98.3%) the HCP took measures to disinfect and flush the injury and 85.1% of the HCP exposed to HIV or unknown infection risk undertook postexposure prophylaxis (HIV-PEP) within 2 h and another 12.8% within 10 h. Follow-up examination was attended by 97.4% of the HCP, three quarters of the HCP felt concerned following NSI and 12.2% were very concerned.

CONCLUSION

Through adequate management and follow-up of NSI low transmission rates can be achieved after exposure to blood-borne viruses within the occupational environment.

Non-invasive liver fibrosis assessment and HCV treatment initiation within a systematic screening program in HIV/HCV coinfected patients

BACKGROUND AND AIM

Hepatitis C virus (HCV) therapy should be considered without delay in all patients with significant (SIGFIB) or advanced liver fibrosis (ADVFIB). We aimed to investigate the rates of treatment initiation with interferon-free regimens within a screening program for SIGFIB/ADVFIB in human immunodeficiency virus/HCV coinfected patients (HIV/HCV).

METHODS

The FIB-4 was calculated in all HIV/HCV from 2014-2016. HIV/HCV were counselled by the HIV clinic and referred to the Division of Gastroenterology and Hepatology for transient elastography (TE) and evaluation for HCV therapy. Patients were stratified by FIB-4 of </≥1.45 (established cut-off for ruling out ADVFIB) and SIGFIB/ADVFIB were defined by liver stiffness >7.1 kPa/>9.5 kPa, respectively.

RESULTS

Among 1348 HIV+ patients, 16% (210/1348) had detectable HCV-RNA. One hundred HIV/HCV had a FIB-4 ≥1.45. Among these, 57% (57/100) underwent TE. The majority of these patients had SIGFIB (75%; 43/57) or ADVFIB (37%; 21/57), however, interferon-free treatment was initiated in only 56% (24/43). In addition, fifty-two percent (57/110) of HIV/HCV with FIB-4 <1.45 underwent TE. Interestingly, 40% (23/57) and 18% (10/57) of these patients showed SIGFIB or even ADVFIB, respectively, and 78% (18/23) finally received interferon-free treatment. Overall, only 20% (42/210) of HIV/HCV received interferon-free treatment.

CONCLUSION

FIB-4 was not useful for ruling out SIGFIB/ADVFIB in our cohort of HIV/HCV. Treatment was initiated only in a small proportion (20%) of HIV/HCV during the first 2 years of interferon-free treatment availability, although the observed proportion of patients with SIGFIB (assessed by TE) was considerably higher (58%). Thus, it requires the ongoing combined efforts of both HIV and HCV specialists to increase treatment uptake rates in this special population.

Hepatitis C in Eastern Europe and Central Asia: a survey of epidemiology, treatment access and civil society activity in eleven countries

INTRODUCTION

The 16 countries of the Eastern Europe and Central Asia (EECA) region are home to 6.6 million people in need of treatment for chronic hepatitis C virus (HCV) infection. Because of transformational change in HCV treatment, global efforts to address HCV are accelerating. Given its large regional burden, the EECA needs to ensure its inclusion in and benefit from any new developments.

METHODS

Our 2015-16 survey aimed to collect and report on epidemiology, treatment access (including drug registration and prices, national HCV guidelines and treatment program coverage) and pertinent civil society organization (CSO) activities in 11 countries in the EECA.

RESULTS

Major gaps in epidemiological data exist; reported anti-HCV prevalence ranged from 1.5 to 7.5% for the general population, 22.7 to 70-95% for people who inject drugs (PWID) and 18 to 80% for people living with HIV (PLHIV). Ten countries (91% of the sample) have registered one or more of the second-generation, direct-acting antiviral medications (DAA) for potential interferon-free treatment. However, intellectual property issues and prices limit access to these drugs. In 2014, HCV programs in the surveyed countries covered only 0.15% of the total number of people in need of treatment. CSO-driven, international donor-funded programs are starting to fulfill needs of PWID and PLHIV.

CONCLUSIONS

As feasible curative HCV treatment is now available, and given the significant regional disease burden, EECA countries need to ensure HCV surveillance and DAA availability at affordable prices in order to expand treatment and prevent the onward transmission of the infection. EECA CSOs have demonstrated their capacity to play a crucial role in advancing HCV issues, and they should continue leveraging these issues for the benefit of individual patients and public health in general.

[Sofosbuvir and daclatasvir combination therapy in hemodialysis patient with liver transplantation]

We report a case of sustained remission of a liver transplant patient infected with hepatitis C virus (HCV) genotype 1 undergoing hemodialysis treatment. Oral treatment regimen of the HCV infection consists of a combination of sofosbuvir 400 mg after each hemodialysis session and daclatasvir 60 mg daily, for a period of 3 months. Laboratory testing indicate that the combination regimen was well-tolerated with no sign of drug-drug interaction. Confirmation of these clinical observations in large clinical studies may help improve morbidity and decrease mortality outcome in patients infected with HCV and undergoing hemodialysis treatment.

Pure red cell aplasia caused by ribavirin and interferon treatment

Anemia is a common complication of hepatitis C (HCV), and antiviral treatment can further increase this risk. We present the case of a 59-year-old man with HCV treated with ribavirin and pegylated interferon alpha (INF-α) who presented with severe anemia. Two months after initiating treatment his hemoglobin dropped from 14.2 to 5.0 g/dL. There was no evidence of bleeding or hemolysis, and a bone marrow biopsy revealed pure red cell aplasia (PRCA). Evaluations for acute cytomegalovirus and parvovirus B19 were negative. There was no evidence of malignancy or thymoma. The INF-α and ribavirin treatment were determined to have caused the PRCA, and withdrawal of the medications led to PRCA remission. INF-α and ribavirin have become the standard treatment for HCV. While these medications offer a potential cure, they are often poorly tolerated due to frequent side effects including anemia. Patients who are receiving treatment with ribavirin and INF-α warrant close monitoring for development of anemia, and PRCA should be considered in all patients in whom reticulocytopenic anemia develops.