Pangenotypic and Genotype-Specific Antivirals in the Treatment of HCV Genotype 4 Infected Patients with HCV Monoinfection and HIV/HCV Coinfection

Integrating hepatitis C testing and treatment into routine HIV care in Cameroon is feasible

INTRODUCTION

Hepatitis C virus (HCV) prevalence and adverse outcomes are higher among people with human immunodeficiency virus (HIV) than people without HIV. Yet, HCV prevalence among people with HIV in Cameroon remains unknown, with HCV diagnosis and treatment largely inaccessible due to care centralization by specialists with high out-of-pocket costs. Integration of HCV services into routine HIV care by general practitioners could improve diagnosis and treatment coverage. We aimed to examine HCV prevalence and treatment cure rate among people with HIV attending 11 HIV clinics in the Centre Region of Cameroon.

METHODS

We offered HCV rapid antibody testing, and, if positive, RNA testing to all persons ≥21 years, on HIV ART for ≥6 months and with suppressed HIV RNA (<1000 copies) who attended HIV counselling and treatment appointments between 20 April 2021 and 31 May 2022. Participants with an HCV RNA positive test received 12 weeks of pangenotypic sofosbuvir/velpatasvir. We calculated the cure rate as the proportion of participants with a sustained virological response 12 weeks after treatment completion (SVR12) among all starting and completing treatment.

RESULTS

We tested 8266 persons for HCV antibodies, 316 (3.8%, 95% CI = 3.4-4.3%) of whom were anti-HCV positive. Of these, 286 (90.5%) were sampled for HCV RNA, 20 (6.3%) ineligible, 5 (1.6%) declined, 4 (1.3%) left before sampling and 1 (0.3%) had an unknown reason. Among 286 sampled, 251 (87.8%) had detectable HCV RNA. Of these, 173 (68.9%) enrolled for treatment, 55 (21.9%) were eligible but not enrolled (49 lost-to-follow-up, 6 denied) and 23 (9.2%) were ineligible. Of 173 enrolled, 165 completed treatment, 6 were lost-to-follow-up and 2 were excluded due to treatment interruption. SVR12 was achieved in 93.6% (n = 162; 95% CI: 88.9-96.8%) of those enrolled and 98.2% (95% CI: 94.8-99.6%) of treatment completers. All three initially not achieving SVR12 were cured with second-line treatment (sofosbuvir/velpatasvir/voxilaprevir).

CONCLUSIONS

Our study demonstrates the viability of integrating HCV testing and treatment into routine HIV care in Cameroon, yielding new HCV diagnoses and high cure rates. Cameroon can use this strategy to achieve HCV elimination goals, although improvements in testing uptake, diagnosis and treatment access, and laboratory capacity are needed.

Real-life effectiveness of antiviral therapy for HCV infection with pangenotypic regimens in HIV coinfected patients

BACKGROUND

The aim of this study was to evaluate the real-life efficacy of pangenotypic antivirals in HIV-HCV-positive patients.

RESEARCH DESIGN AND METHODS

The analysis included 5650 subjects who were treated with pangenotypic anti-HCV drugs: 5142 were HCV-positive and 508 were HIV-HCV-positive.

RESULTS

Patients with HCV-monoinfection were older (p < 0.0001), however patients with HCV-monoinfection had a higher proportion of advanced fibrosis F4 (p < 0.0001). There were no differences between the study groups in the rate of SVR12 in ITT-analysis (87,6% versus 93,9% in coinfection and monoinfection group, respectively; p > 0.05). However, there was a difference between study groups in PP-analysis, HIV/HCV and HCV, respectively 95.9% vs 97.9%, p = 0.0323. Additionally, there were a higher rate of patients who did not apply for follow-up (SVR12) in coinfected patients (7,9% vs 3,6% respectively p = 0.0001). In multivariante analysis, factors associated with worse response to the pangenotypic anti-HCV therapy included male sex, HCV genotype 3, stage of fibrosis and decompensation of liver function and HIV coinfection.

CONCLUSIONS

The real-life results of pangenotypic anti-HCV treatment are veryeffective in the group of HIV-HCV-coinfected patients. However, the finaleffectiveness is slightly lower than that obtained in HCV monoinfectedpatients.

Comprehensive assessment of circulatory miRNAs as potential diagnostic markers in HCV recurrence post liver transplantation

HCV recurrence after liver transplantation is one of the causal agents for graft rejection. This study aims to profile non-invasive biomarkers in patients with HCC who had liver transplants. One hundred participants were categorized into three groups (20 control, 32 recurrent HCV (RHCV), and 48 non-RHCV). The expression of six miRNAs (hsa-miR-124-3p, hsa-miR-155-5p, hsa-miR-205-5p, hsa-miR-499a-5p, hsa-miR-574-3p, and hsa-miR-103a-3p) and two mRNAs IL-1β, STAT1 were quantified. RHCV group has higher levels of hsa-miR-574-3p and hsa-miR-155-5p and lesser levels of hsa-miR-499a-5p than control groups (p = 0.024, 0.0001, 0.002; respectively). RHCV and non-RHCV groups revealed a significant reduction in levels of IL-1β and STAT1 mRNA compared to the control (p = 0.011, 0.014; respectively). According to ROC analysis, miR-155-5p can differentiate among the patients' groups, while miR-574-3p, IL-1β, and STAT1 mRNA can discriminate between RHCV and control groups. In conclusion, RHCV patients have dysregulated expression of five transcripts compared to non-RHCV and control groups.

Decade of optimizing therapy with direct-acting antiviral drugs and the changing profile of patients with chronic hepatitis C

Chronic infection with the hepatitis C virus (HCV) remains a major health problem affecting approximately 58 million people worldwide. In the era of interferon (IFN)-based regimens, patients particularly infected with genotypes 1 and 4 achieved a low response rate. The implementation of direct-acting antivirals changed the landscape of HCV treatment. The increase in effectiveness provided us with the hope of eliminating HCV as a significant public threat by 2030. In the following years, there was an observed improvement in the treatment of HCV with genotype-specific regimens and highly effective pangenotypic options that are the most recent stage of the revolution. The optimization of therapy was accompanied by changes in the patient profile from the beginning of the IFN-free era over time. Patients treated with antiviral therapies were younger in successive periods, less burdened with comorbidities and comedications, more frequently treatment-naïve and had less advanced liver disease. Before the IFN-free era, specific subpopulations such as patients with HCV/HIV coinfection, those with a history of previous treatment, patients with renal impairment or with cirrhosis had lower chances for a virologic response. Currently, these populations should no longer be considered difficult to treat. Despite the high effectiveness of HCV therapy, there is a small percentage of patients with treatment failure. However, they can be effectively retreated with pangenotypic rescue regimens.

Treatment Response and Drug Resistance Profiling of Genotype 6 of Hepatitis C Virus in HCV/HIV Co-Infected Patients: A Pilot Study from INDIA

Hepatitis C Virus (HCV) genotype (GT) 6 demonstrates maximum genomic diversity out of all the known genotypes of HCV, attributable to its inherent intra-genotype and inter-genotype recombination property. This is the most common genotype seen in HCV/HIV co-infected cases. HIV/HCV co-infection is linked with increased genetic diversity in HCV structural genes. The detailed information on the distribution of HCV GT6, its subtypes, and resistance to currently available antiviral drugs is limited in the Indian subcontinent. Therefore, in this single-center retrospective cross-sectional study, we aimed to map the occurrence of HCV GT6, its subtypes and resistance-associated substitution (RAS), and its correlation with antiviral treatment response in HCV-infected patients. From a cohort of 2052 HCV-infected patients, the overall prevalence of GT6 was 2.5% (n = 53), with a maximum of 81.1% (n = 43) seen in HCV/HIV co-infected patients. Nine different subtypes, 6a, 6b, 6f, 6i, 6n, 6u, 6v, 6w, and 6xa, were detected in the Indian population for the first time, with a predominance of 6xa (41.5%), a rare subtype, followed by 6n (39.6%). The phylogenetic analysis by the neighbor-joining method revealed three prominent viral clades, 6v, 6n, and 6xa–6u. The baseline (before treatment initiation) plasma samples of all GT6-infected patients were retrieved from −80 °C and a part of the NS5a and NS5b region of the viral genome was analyzed for the presence of RAS. No RASs were seen in the NS5b region, while in two patients (3.7%) RASs were seen at baseline in the NS5a region of the virus. Sustained viral response (SVR) was attained in 81% (n = 43) of patients. No difference in GT6 subtype distribution or occurrence of RAS was seen between mono-infected HCV and HIV/HCV co-infected cases. Our study revealed that RAS at baseline did not influence the attainment of SVR and the currently available antiviral therapy is effective against GT6 mono-infected and HIV/HCV co-infected patients.