Effect of treatment periods on efficacy of glecaprevir and pibrentasvir in chronic hepatitis C: A nationwide, prospective, multicenter study.

Background and aim: In patients with chronic hepatitis C, 8 weeks of glecaprevir and pibrentasvir (GLE/PIB) treatment for chronic hepatitis (non-cirrhosis) and 12 weeks for cirrhosis have been approved in Japan. However, whether 8 weeks of treatment for cirrhosis may reduce treatment efficacy has not been adequately investigated. Methods: This prospective, nationwide, multicenter cohort study enrolled 1275 patients with chronic hepatitis C who received GLE/PIB therapy. The effect of liver fibrosis and treatment periods on the efficiency of GLE/PIB therapy was investigated. The primary endpoint was the sustained virological response (SVR) rate in patients with chronic hepatitis (non-cirrhosis) and cirrhosis. The association between treatment periods and liver fibrosis on the SVR after 12 weeks of treatment rate was investigated. Results: The SVR rates in patients with chronic hepatitis with 8 weeks of treatment, chronic hepatitis with 12 weeks of treatment, cirrhosis with 8 weeks of treatment, and cirrhosis with 12 weeks of treatment were 98.9% (800/809), 100% (87/87), 100% (166/166), and 99.1% (211/213), respectively, and were was not different among these groups (P = 0.4). Conclusion: GLE/PIB therapy for chronic hepatitis C had high efficacy regardless of liver fibrosis status and treatment periods. Periods of GLE/PIB therapy could be chosen with available modalities, and high SVR rates could be achieved regardless of the decision.

Prevalence and associated metabolic factors of nonalcoholic fatty liver disease in the general population from 2014 to 2018 in Japan: A large-scale multicenter retrospective study.

AIM: The prevalence of nonalcoholic fatty liver disease (NAFLD) is increasing worldwide. The aim of this study was to determine the recent prevalence and clinical characteristics of NAFLD in Japan. METHODS: This study initially included 410 061 retrospectively enrolled adults from the medical health checkup registry for metabolic syndrome, chronic kidney disease, and fatty liver in Japan (MIRACLE-J; UMIN-CTR no. UMIN000049419), who were evaluated between 2014 and 2018 at 13 health centers in Japan. Individuals consuming >20 g of alcohol/day or with chronic liver disease were excluded. Fatty liver was diagnosed by ultrasonography. The probability of NAFLD with advanced fibrosis was estimated based on the fibrosis-4 index and NAFLD fibrosis score. RESULTS: A total of 71 254 participants were included in the final analysis. The overall prevalence of NAFLD was 25.8%. There was a significant, twofold difference in NAFLD prevalence between men (37.4%) and women (18.1%). Nonalcoholic fatty liver disease prevalence increased linearly with body mass index, triglycerides, and low-density lipoprotein cholesterol regardless of threshold values, even in the absence of obesity. Among patients with NAFLD, 14% had diabetes mellitus, 31% had hypertension, and 48% had dyslipidemia. The estimated prevalence of NAFLD with advanced fibrosis was 1.7% and 1.0% according to the fibrosis-4 index and NAFLD fibrosis score, respectively. CONCLUSIONS: The prevalence of NAFLD was approximately one-quarter of the general population in Japan. There was a linear relationship between NAFLD prevalence and various metabolic parameters, even in nonobese participants. The prevalence of NAFLD with advanced fibrosis was estimated to be 1%-2%.

Necessity for surveillance for hepatocellualr carcinoma in older patients with chronic hepatitis C who achieved sustained virological response.

Background and Aim: Hepatocellular carcinoma (HCC) surveillance in low-risk patients (annual incidence <1.5%) is not recommended per the American Association for the Study of Liver Diseases guidelines. Because patients with chronic hepatitis C with non-advanced fibrosis who have achieved sustained virological response (SVR) have a low risk of HCC, HCC surveillance is not recommended for them. However, aging is a risk factor for HCC; threfore, the necessity for HCC surveillance in older patients with non-advanced fibrosis needs to be verified. Methods: This multicenter, prospective study enrolled 4993 patients with SVR (1998 patients with advanced fibrosis and 2995 patients with non-advanced fibrosis). The HCC incidence was examined with particular attention to age. Results: The 3-year incidence of HCC in patients with advanced and non-advanced fibrosis was 9.2% (95% CI: 7.8-10.9) and 2.9% (95% CI: 2.1-3.7), respectively. HCC incidence was significantly higher in patients with advanced fibrosis (P < 0.001). HCC incidence stratified by age and sex was investigated in patients with non-advanced fibrosis. The HCC incidence in the 18-49, 50s, 60s, 70s, and ≥80 age groups were 0.26, 1.3, 1.8, 1.7, and 2.9 per 100 person-years in men, and 0.00, 0.32, 0.58, 0.49, and 0.57 per 100 person-years in women, respectively. Conclusions: Male patients with non-advanced fibrosis aged ≥60 years have a higher risk of developing HCC and, thus, require HCC surveillance.

Effects on survival of the adverse event of atezolizumab plus bevacizumab for hepatocellular carcinoma: a multicenter study by the Japan Red Cross Liver Study Group.

This study aimed to describe the real-world efficacy and safety of the combination therapy of atezolizumab and bevacizumab (Atezo/Bev) for unresectable hepatocellular carcinoma (HCC). This retrospective analysis of a multicenter registry cohort included 268 patients treated with Atezo/Bev. The incidence of adverse events (AE) and its impact on overall survival (OS) and progression-free survival (PFS) were analyzed. Of the 268 patients, 230 (85.8%) experienced AE. The median OS and PFS in the whole cohort were 462 and 239 days, respectively. The OS and PFS were not different in terms of AE, but they were significantly shorter in patients with increased bilirubin level and those with increased aspartate aminotransferase (AST) or alanine aminotransferase (ALT). Regarding increased bilirubin level, the hazard ratios (HRs) were 2.61 (95% confidence interval [CI]: 1.04-6.58, P = 0.042) and 2.85 (95% CI: 1.37-5.93, P = 0.005) for OS and PFS, respectively. Regarding increased AST or ALT, the HRs were 6.68 (95% CI: 3.22-13.84, P < 0.001) and 3.54 (95% CI: 1.83-6.86, P < 0.001) for OS and PFS, respectively. Contrarily, the OS was significantly longer in patients with proteinuria (HR: 0.46 [95% CI: 0.23-0.92], P = 0.027). Multivariate analysis confirmed that proteinuria (HR: 0.53 [95% CI: 0.25-0.98], P = 0.044) and increased AST or ALT (HR: 6.679 [95% CI: 3.223-13.84], P = 0.003) were independent risk factors for a shorter OS. Furthermore, analysis limited to cases who completed at least 4 cycles confirmed that increased AST or ALT and proteinuria were negative and positive factors for OS, respectively. In the real-world setting, increased AST or ALT and bilirubin level during Atezo/Bev treatment were found to have a negative impact on PFS and OS, whereas proteinuria had a positive impact on OS.

Usefulness of neutrophil-to-lymphocyte ratio in predicting progression and survival outcomes after atezolizumab-bevacizumab treatment for hepatocellular carcinoma.

AIM: We investigated pretreatment neutrophil-to-lymphocyte ratio (NLR) for predicting survival outcomes of atezolizumab plus bevacizumab therapy for hepatocellular carcinoma (HCC) and determined the predictive ability of combined liver reserve-NLR. METHODS: This retrospective, multicenter study enrolled 242 patients receiving atezolizumab plus bevacizumab for unresectable HCC. Pretreatment NLR <2.56 was designated as the "low group" and NLR ≥2.56 as the "high group" (120 and 122 patients, respectively). Propensity score-matched analysis was undertaken between the low and high groups. RESULTS: In this cohort, the objective response and disease control rates were 20% and 72.5%, respectively, in the low group and 19.6% and 72.9%, respectively, in the high group. After matching, median progression-free survival (PFS) time was 283 and 167 days in the low and high groups, respectively (p = 0.022). Neutrophil-to-lymphocyte ratio ≥2.56 (hazard ratio [HR], 1.54; 95% confidence interval [CI], 1.05-2.28; p = 0.028), modified albumin-bilirubin index (mALBI) grade 2b or 3 (HR 1.55; 95% CI, 1.05-2.29; p = 0.025), and protein induced by vitamin K absence or antagonist-II ≥ 400 (HR 2.03; 95% CI, 1.36-3.02; p = 0.001) were significantly associated with PFS in univariate analysis using the Cox proportional hazards model. In cases involving mALBI grade 1 or 2a (n = 131), the median PFS time was not reached in the low group, whereas it was 210 days in the high group (p = 0.037). CONCLUSIONS: Pretreatment NLR is a simple tool for routine measurement in clinical practice. It can predict PFS in patients with unresectable HCC treated with atezolizumab plus bevacizumab, especially mALBI grade 1 or 2a.

Optimal threshold of alpha-fetoprotein response in patients with unresectable hepatocellular carcinoma treated with atezolizumab and bevacizumab.

Alpha-fetoprotein (AFP) response (relative decline in AFP) is associated with imaging response evaluated by response evaluation criteria in solid tumors ver1.1 (RECIST) and survival in treatment for hepatocellular carcinoma (HCC). However, the optimal threshold of AFP response is still unknown, especially in atezolizumab and bevacizumab (Atez/Bev) treatment. In this prospective multicenter study, we aimed to investigate an optimal threshold of AFP response in Atez/Bev treatment. Out of 284 patients with unresectable HCC who were treated with Atez/Bev, 91 patients with AFP ≥ 10 ng/ml were enrolled in the multicenter study. We investigated the relationship between various AFP response thresholds (relative decline ≥ 20%, ≥ 50%, and ≥ 75%) and treatment response and progression-free survival (PFS). An AFP relative decrease of ≥ 50% was associated with an overall response rate (ORR) with an odds ratio (95% confidence interval [CI]) of 5.7 (1.9-17). Disease control rate (DCR) was associated with an AFP relative decrease of ≥ 20%, with a 100% positive predictive value and a 52.0% sensitivity. AFP relative decreases of ≥ 50% and ≥ 20% were significantly associated with PFS with a hazard ratio (HR) of 5.60 (95% CI: 1.6-19, p = 0.006) and a HR of 4.44 (95% CI: 1.9-10, p < 0.001), respectively. AFP response of ≥ 50% and ≥ 20% were related to ORR and DCR, respectively, and both of these responses were also associated with PFS. AFP can be used as a real-time monitor during Atez/Bev treatment and is helpful for treatment optimization.

General evaluation score for predicting the development of hepatocellular carcinoma in patients with advanced liver fibrosis associated with hepatitis C virus genotype 1 or 2 after direct-acting antiviral therapy.

Background and Aim: To validate a composite predictive model for hepatocellular carcinoma (HCC) development in patients with advanced liver fibrosis associated with chronic hepatitis C virus (HCV) who have received direct-acting antiviral (DAA) therapy and achieved sustained virologic response (SVR). Methods: This study included 1258 patients with advanced liver fibrosis associated with HCV genotype 1, 2, or both. General evaluation score (GES), which is based on sex, age, fibrosis stage, albumin, and α-fetoprotein, was used as a composite predictive model. Results: There were 645 (51.3%) patients in the low-risk group, 228 (18.1%) in the intermediate-risk group, and 385 (30.6%) in the high-risk group based on GES categories. The 12-, 36-, and 60-month cumulative incidence of HCC was 0.7%, 5.3%, and 13.0%, respectively. Multivariable analysis with Cox proportional hazards models showed that male sex (hazard ratio [HR], 1.863; 95% confidence interval [CI], 1.204-2.883), F4 fibrosis stage (HR, 3.199; 95% CI, 1.696-6.036), and albumin (HR, 0.489; 95% CI, 0.288-0.828) are independently associated with HCC development. The incidence of HCC differed significantly by GES-based risk category (P < 0.001). Cox proportional hazards models showed that, with the low-risk group as the referent, the HR for HCC development was 1.875 (95% CI, 1.000-3.514) in the intermediate-risk group and 2.819 (95% CI, 1.716-4.630) in the high-risk group. GES had better predictive ability for HCC development than fibrosis-4 index according to time-dependent receiver operating characteristic analysis. Conclusion: GES is useful for predicting HCC development in patients with advanced liver fibrosis after SVR.

Real-World Data on Ramucirumab Therapy including Patients Who Experienced Two or More Systemic Treatments: A Multicenter Study.

BACKGROUND: The present study aimed to clarify the efficacy and safety of ramucirumab in a real-world setting, including patients who experienced two or more systemic treatments or whose hepatic reserve was deteriorated. METHODS: In total, 79 patients with hepatocellular carcinoma (HCC) from 14 institutes throughout Japan were retrospectively analyzed. The response was evaluated using the Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1, and AEs were recorded according to the Common Terminology Criteria for AEs (CTCAE) version 5.0. RESULTS: Median overall survival (OS) in the total cohort was 7.5 months (m). Median OS was 8.8 m in patients who were administered ramucirumab as a second-line treatment, while it was 7.3 m in third- or later-line treatment. Progression-free survival rates in the second- and third- or later-line therapies were 3.2 m and 3.2 m, respectively. The disease control rate (DCR) in the study was 43%. There were no statistically significant differences in DCR between the treatment courses. Regarding adverse events (AEs), the development of ascites was observed significantly more frequently in modified albumin-bilirubin (mALBI) 2b/3 patients than in mALBI 1/2a patients (54.5% vs. 25.0%, p = 0.03). CONCLUSIONS: Ramucirumab is useful as a second-line therapy and feasible as a third- or later-line treatment for HCC.

Real-world long-term analysis of daclatasvir plus asunaprevir in patients with hepatitis C virus infection.

Background and Aim: This study aimed to evaluate the long-term clinical course of patients achieving a sustained virologic response (SVR) with daclatasvir plus asunaprevir (DCV/ASV) therapy. Methods: A total of 911 patients who achieved SVR with DCV/ASV were assessed. To evaluate pretreatment factors contributing to hepatocellular carcinoma (HCC) after SVR, univariate and multivariate analyses were performed in all patients, in those with preexisting HCC, and in those without preexisting HCC. We selected a low-risk group of HCC cases after SVR. Finally, we evaluated liver function after achieving SVR. Results: In multivariable analyses, male sex, older age, patients with a history of HCC treatment, excess alcohol use, lower albumin, and low platelet count remained significant in the overall group; male sex and low albumin remained significant in patients with a history of HCC treatment; and male sex, older age, excess alcohol use, low platelet count, high alpha-fetoprotein (AFP), and high des-γ-carboxy prothrombin (DCP) remained significant in those without a history of HCC treatment. Patients who had not received treatment for HCC, females, those under 70 years of age, and those with platelet count ≥13 (×104/µL), AFP <6 ng/mL, and DCP <23 mAU/mL were at low risk of HCC. The process of liver function improvement was different according to the factors. Conclusions: The incidence rate of HCC, risk factors associated with HCC, group with very low risk of developing HCC, and the clinical course in a real-world long-term study were evaluated.

Efficacy of hepatitis C virus eradication after curative treatment for hepatocellular carcinoma in patients with advanced hepatocellular carcinoma and decreased hepatic functional reserve: A nationwide, multicentre study by the Japanese Red Cross Liver Study Group.

Improvements in the hepatocellular carcinoma (HCC) recurrence rate and survival have been frequently reported following virus eradication after hepatitis C virus (HCV)-related HCC cure. However, the efficacy of direct-acting antiviral (DAA) therapy in patients who included those with advanced HCC and decreased hepatic functional reserve is unknown. A comparative examination was retrospectively conducted of 141 patients with hepatitis C who started DAA therapy within 1 year after undergoing curative HCC treatment and showed a sustained viral response (SVR) and 327 patients who underwent curative treatment for HCV-related HCC and did not subsequently receive antiviral therapy. Whether DAA therapy was given was identified as an independent factor related to both HCC recurrence and survival. Both the recurrence and survival rates improved significantly with DAA therapy in Child-Pugh (CP)-A, whereas no difference in the recurrence rate was seen with DAA therapy in CP-B. However, the survival rate was significantly higher in the DAA group in this class. Similarly, dividing the patients by the Milan criteria showed significant improvements in the recurrence rate and survival with DAA therapy in patients within the Milan criteria. Patients with HCC beyond the Milan criteria showed no difference in recurrence rates, but the DAA group tended to have higher survival rates. Thus, DAA after curative therapy for HCC can be expected to improve survival in patients with advanced HCC or decreased hepatic functional reserve. HCV should be aggressively eradicated in all patients eligible for curative treatment of HCC.

A validation study of after direct-acting antivirals recommendation for surveillance score for the development of hepatocellular carcinoma in patients with hepatitis C virus infection who had received direct-acting antiviral therapy and achieved sustained virological response.

BACKGROUND AND AIM: The pathogenic process underlying the development of hepatocellular carcinoma (HCC) is not yet clear in patients with hepatitis C virus (HCV) who have received direct-acting antiviral (DAA) therapy and achieved sustained virological response (SVR). This study validated a composite predictive model for HCC in these patients. METHODS: This study included 3058 patients in whom HCV was eradicated with DAA therapy. After DAAs recommendation for surveillance (ADRES) score, which is based on sex, FIB-4 index, and α-fetoprotein, was used as a composite predictive model for HCC development. RESULTS: The 1-, 3-, and 5-year cumulative incidence rates of HCC were 0.9, 4.5, and 15.2%, respectively. Multivariate analysis with Cox proportional hazards models showed that male sex (hazard ratio [HR], 2.646; 95% confidence interval [CI], 1.790-3.911), FIB-4 index >3.25 (HR, 2.891; 95% CI, 1.947-4.293), and α-fetoprotein >5 ng/mL (HR, 2.835; 95% CI, 1.914-4.200) are independently associated with HCC development. The incidence of HCC differed significantly by ADRES score (P < 0.001). Cox proportional hazards models showed that compared to the ADRES score 0 group, the HR for HCC development was 2.947 (95% CI, 1.367-6.354) in the ADRES score 1 group, 9.171 (95% CI, 4.339-19.380) in the ADRES score 2 group, and 20.630 (95% CI, 8.641-49.230) in the ADRES score 3 group. ADRES score had superior predictive power for HCC development compared with the FIB-4 index and α-fetoprotein according to time-dependent receiver operating characteristic analysis. CONCLUSION: The ADRES score is useful for predicting HCC development after SVR.

Hepatocellular Carcinoma Risk Assessment for Patients With Advanced Fibrosis After Eradication of Hepatitis C Virus.

The identification of patients with advanced fibrosis who do not need any further hepatocellular carcinoma (HCC) surveillance after the eradication of hepatitis C is pivotal. In this study, we developed a simple serum-based risk model that could identify patients with low-risk HCC. This was a nationwide multicenter study involving 16 Hospitals in Japan. Patients with advanced fibrosis (1,325 in a derivation cohort and 508 in a validation cohort) who achieved sustained virological responses at 24 weeks after treatment (SVR24) were enrolled. The HCC risk model at any point after SVR24 and its change were evaluated, and subsequent HCC development was analyzed. Based on the multivariable analysis, patients fulfilling all of the factors (GAF4 criteria: gamma-glutamyl transferase < 28 IU/L, alpha-fetoprotein < 4.0 ng/mL, and Fibrosis-4 Index < 4.28) were classified as low-risk and others were classified as high-risk. When patients were stratified at the SVR24, and 1 year, and 2 years after SVR24, subsequent HCC development was significantly lower in low-risk patients (0.5-1.1 per 100 person-years in the derivation cohort and 0.9-1.1 per 100 person-years in the validation cohort) than in high-risk patients at each point. HCC risk from 1 year after SVR24 decreased in patients whose risk improved from high-risk to low-risk (HCC incidence: 0.6 per 100 person-years [hazard ratio (HR) = 0.163 in the derivation cohort] and 1.3 per 100 person-years [HR = 0.239 in the validation cohort]) than in those with sustained high risk. Conclusion: The HCC risk model based on simple serum markers at any point after SVR and its change can identify patients with advanced fibrosis who are at low HCC risk, and these patients may be able to reduce HCC surveillance.

The Real-World Data in Japanese Patients with Unresectable Hepatocellular Carcinoma Treated with Lenvatinib from a Nationwide Multicenter Study.

BACKGROUND: Lenvatinib (LEN) has been approved for patients with unresectable hepatocellular carcinoma (u-HCC) since March 2018 in Japan. We performed a retrospective nationwide multicenter study to clarify the clinical characteristics of LEN in real-world practice. METHODS: A total of 343 u-HCC patients who received LEN from March 2018 to May 2020 at 23 sites in Japan were registered. RESULTS: During the median observation period of 10.5 months, 143 patients died. In Child-Pugh A (n = 276) and Child-Pugh B (n = 67) patients, the median overall survival (OS) was 21.0 and 9.0 months. The median progression-free survival (PFS) was 8.8 months in Child-Pugh A patients. The objective response rate (ORR) and disease control rate (DCR) according to modified response evaluation criteria in solid tumors (RECIST criteria) were 42.1% and 82.1%. The independent pretreatment factors associated with mortality in all patients were AFP ≥ 400 ng/mL (hazard ratio (HR) 2.00, 95% confidential interval (95% CI) 1.08-2.09, p < 0.0001), modified albumin-bilirubin (ALBI) grade 2b or 3 (HR 1.56, 95% CI 1.09-2.17, p = 0.012), major vascular invasion (HR 1.91, 95% CI 1.26-2.89, p = 0.0022), PS > 0 (HR 1.50, 95% CI 1.09-2.08, p = 0.014), and MTT (molecular targeted therapy) experience (HR 2.22, 95% CI 1.56-3.13, p = 0.00038). In the MTT naïve patients with ALBI grade 1 or modified ALBI 2a and BCLC stage B (n = 68), median OS and PFS were 25.3 and 12.3 months. Liver-related adverse events during LEN were the only significant adverse event associated with OS (HR 2.74, 95% CI 1.93-3.88, p < 0.0001). Among the Child-Pugh A patients with extrahepatic metastasis and no major vascular invasion, median PFS in the patients with bone metastasis was significantly shorter than those with lung or adrenal grand metastasis (6.3 vs. 12.5 months, p = 0.0025). CONCLUSION: LEN showed a high response rate in real-world practice. Pretreatment factors, including ALBI score, AFP, and major vascular invasion are important in making a treatment strategy for patients with u-HCC. The patients with bone metastasis would be candidates for new therapeutic approaches.

Real-world clinical outcomes of sofosbuvir and velpatasvir treatment in HCV genotype 1- and 2-infected patients with decompensated cirrhosis: A nationwide multicenter study by the Japanese Red Cross Liver Study Group.

The real-world virological efficacy and safety of interferon-free direct-acting antiviral (DAA) therapy with sofosbuvir (SOF) and velpatasvir (VEL) were assessed in hepatitis C virus (HCV) genotype 1- and 2-infected patients with decompensated cirrhosis. A total of 65 patients with HCV-related decompensated cirrhosis (Child-Pugh score of 7 points or more) who were treated with the SOF/VEL regimen were enrolled. The sustained virological response (SVR) rate and safety profile were analyzed. SVR was defined as undetectable serum HCV RNA at 12 weeks after the end of treatment (SVR12). The percentages of patients with undetectable HCV RNA at 4, 8, and 12 weeks after the start of therapy were 81.2% (95% confidence interval [CI], 69.5-89.9) (52/64), 98.4% (95% CI, 91.2-100.0) (60/61), and 98.5% (95% CI, 91.7-100.0) (64/65), respectively. The overall SVR rate was 92.3% (95% CI, 83.0-97.5) (60/65). Albumin-bilirubin (ALBI) scores decreased during and after treatment (p < 0.001), and there were significant differences between baseline and end of treatment and between baseline and SVR12. Subgroup analyses showed no significant differences in SVR rates according to patient age, sex, HCV genotype (subtype), Child-Pugh classification, modified ALBI grade, presence of ascites, presence of hepatic coma, or history of hepatocellular carcinoma. In all subpopulations, the SVR rates were higher than 80%. There were no severe adverse events associated with the treatment. The SOF/VEL regimen showed good virological efficacy and acceptable safety even in patients with HCV-related decompensated cirrhosis.

Change in Fibrosis 4 Index as Predictor of High Risk of Incident Hepatocellular Carcinoma After Eradication of Hepatitis C Virus.

BACKGROUND: It is unclear whether the fibrosis 4 index (FIB-4), a marker of liver fibrosis, at baseline and change in FIB-4 after sustained virological response (SVR) is associated with incident hepatocellular carcinoma (HCC) risk. In this study, we examined the association of incident HCC risk with baseline FIB-4 and sustained high FIB-4 (>3.25) at any time point after SVR. METHODS: A total of 3823 patients who received direct-acting antiviral treatment and achieved SVR were enrolled. The FIB-4 was measured 24 weeks after the end of direct-acting antiviral treatment and achievement of SVR (SVR24), and 1, 2, and 3 years after SVR24, after which subsequent HCC development was investigated. RESULTS: In patients with an FIB-4 >3.25 at SVR24 and 1, 2, and 3 years after SVR24, subsequent HCC development was significantly higher than in those with an FIB-4 ≤3.25 at each point. The rates of HCC development 1, 2, 3, and 4 years after SVR24 were significantly higher in patients with sustained FIB-4 >3.25 than in those whose FIB-4 decreased to ≤3.25 (5.4%, 9.2%, 11.7%, and 16.0%, respectively, vs 2.2%, 3.1%, 3.7%, and 4.4%; P < .001). The adjusted hazard ratios (95% confidence intervals) for an FIB-4 >3.25 at SVR24 and 1, 2, and 3 years later were 3.38 (2.4-4.8), 2.95 (1.9-4.7), 2.62 (1.3-5.1), and 3.37 (1.4-9.8), respectively. CONCLUSIONS: The FIB-4 could be used to assess HCC development risk at any time after SVR, and changes in FIB-4 were associated with changes in the HCC development risk. Repeated assessments of FIB-4 could serve as a prognostic indicator of a high-risk HCC cohort that may require more intensive HCC surveillance strategy.

Detectable HBV DNA during nucleos(t)ide analogues stratifies predictive hepatocellular carcinoma risk score.

Nucleos(t)ide analogs (NA) suppress hepatitis B virus (HBV) replication and reduce the risk of hepatocellular carcinoma (HCC). However, NA cannot suppress carcinogenesis completely in patients with chronic hepatitis B. The aims of this study were to identify risk factors for HCC and develop a refined carcinogenesis prediction model. Patients receiving NA therapy (n = 1,183) were recruited retrospectively from the 16 hospitals. All patients had been receiving NA continuously for more than 1 year until the end of the follow-up. During a median follow-up of 4.9 (1.0-12.9) years, 52 (4.4%) patients developed HCC. A multivariate analysis revealed that male gender, older age, lower platelet counts at the baseline, and detectable HBV DNA during NA therapy were independent predictive factors of HCC development. The PAGE-B score was calculated by using these factors. 240 (20.3%), 661 (55.9%), and 282 (23.8%) patients were classified into low-, intermediate-, and high-risk groups, respectively. In the intermediate- and high-risk group, detectable HBV DNA was significantly associated with a higher risk of HCC development compared with continuously undetectable HBV DNA, respectively (HR 3.338; 95% CI 1.045-10.66/HR 3.191; 95% CI 1.543-6.597). PAGE-B-DNA, which is the combined PAGE-B and HBV DNA status, was valuable for a more refined stratification of PAGE-B.

Features of resistance-associated substitutions after failure of multiple direct-acting antiviral regimens for hepatitis C.

BACKGROUND & AIMS: We aimed to clarify the features of resistance-associated substitutions (RASs) after failure of multiple interferon (IFN)-free regimens in HCV genotype 1b infections. METHODS: A total of 1,193 patients with HCV for whom direct-acting antiviral (DAA) treatment had failed were enrolled from 67 institutions in Japan. The RASs in non-structural protein (NS)3, NS5A, and NS5B were determined by population sequencing. RESULTS: Failure of 1, 2, and 3 regimens was observed in 1,101; 80; and 12 patients, respectively. Among patients with failure of 1 regimen, Y56H and D168V in NS3 were more frequently detected after failure of paritaprevir, whereas D168E was more frequently detected after failure of regimens including asunaprevir. R30H and L31-RAS in NS5A were frequently detected after failure of regimens including daclatasvir. The prevalence of Y93-RAS was high irrespective of the regimen. S282T RAS in NS5B was detected in 3.9% of ledipasvir/sofosbuvir failures. The prevalence of D168-RAS increased significantly according to the number of failed regimens (p <0.01), which was similar to that seen with L31-RAS and Y93-RAS. The prevalence of patients with RASs in either NS3 or NS5A, or in both, increased significantly with increasing numbers of failed regimens. The P32del, which is unique to patients for whom DAA had failed, was linked to the absence of Y93H, the presence of L31F, and previous exposure to IFN plus protease inhibitor regimens. CONCLUSIONS: Failure of multiple DAA regimens can lead to the generation of multiple RASs in the NS3 and NS5A regions of the HCV 1b genome. These mutations contribute to viral resistance to multiple treatment regimens and, therefore, should be considered during decision making for treatment of chronic HCV. LAY SUMMARY: Resistance-associated substitutions (RAS) in the genome of the hepatitis C virus are 1 of the major causes for failed treatment. We investigated RASs after failure of various treatments for chronic hepatitis C, and found that more complicated RASs accumulated in the viral genome with successive failed treatments. The highly resistant P32del RAS at NS5A region was uniquely found in patients for whom DAA treatments had failed, and was linked to the presence and absence of specific RASs.

Real-world efficacy of elbasvir and grazoprevir for hepatitis C virus (genotype 1): A nationwide, multicenter study by the Japanese Red Cross Hospital Liver Study Group.

AIM: The present study aimed to determine the real-world efficacy and safety of the non-structural protein (NS)5A inhibitor elbasvir (EBR) combined with the NS3/4A protease inhibitor grazoprevir (GZR) in patients with hepatitis C virus (HCV) genotype 1 (GT1) infection. METHODS: This study retrospectively evaluated the rate of sustained virologic response at 12 weeks post-treatment (SVR12) and the safety of EBR/GZR treatment in 159 men and 194 women with a median age of 72 years, and it assessed factors associated with the SVR12 rate. The attending physicians were responsible for selecting candidate patients for EBR/GZR in this retrospective study. RESULTS: Treatment outcomes for EBR/GZR were good in direct-acting antiviral (DAA)-naïve patients, of whom 99.4% achieved SVR. Of 353 patients, 10 (2.9%) had treatment failure. Of these patients, eight previously underwent DAA therapy, and the remaining two had NS5A-L31/Y93 double mutation. The SVR rate was 50% (8/16 patients) in patients who previously underwent DAA therapy, and 18.2% (2/11 patients) in patients with NS5A-L31/Y93 double mutation. On multivariate logistic regression analysis, NS5A-Y31/Y93 double mutation (odds ratio 356.3; 95% confidence interval, 23.91-16 940; P < 0.0001) was identified as an independent predictor of treatment failure. No serious adverse events were observed with EBR/GZR therapy. CONCLUSIONS: The SVR rate of EBR/GZR would have been 100% in patients without either a history of DAA therapy or double mutation. This combination of drugs could be safely given and is, thus, considered a highly useful first-line treatment for DAA-naïve patients with HCV.

Safety and efficacy of glecaprevir and pibrentasvir in Japanese hemodialysis patients with genotype 2 hepatitis C virus infection.

BACKGROUND: Until recently, interferon-free anti-hepatitis C virus (HCV) therapy for genotype 2 (GT2) HCV-infected hemodialysis patients was an unfulfilled medical need. Recent clinical trials of glecaprevir and pibrentasvir (G/P) for hemodialysis patients showed high efficacy and safety; however, the number of GT2 HCV-infected patients, especially Asian patients, was limited and most of them were treated with a 12-week regimen. In this prospective multicenter study, we aimed to investigate the efficacy and safety of G/P in Japanese hemodialysis patients with GT2 HCV infection. METHODS: Twenty-seven Japanese hemodialysis patients with GT2 HCV infection who were started on with 8- or 12-week G/P regimen between November 2017 and June 2018 were included and followed up for around 12 weeks after treatment completion. RESULTS: Among the 27 included patients, 13 non-liver cirrhosis (LC) and direct-acting antivirals (DAAs)-naïve patients were treated with 8 weeks of G/P and 14 patients with LC (n = 13) or history of failure of DAAs (n = 1) were treated with a 12-week regimen. The overall sustained virological response at 12 weeks after treatment completion (SVR 12) was 96.3% (26/27). All patients with 8 weeks of treatment achieved SVR12. Two patients discontinued the therapy at 2 and 11 weeks after treatment initiation. The patient who discontinued at 2 weeks due to pruritus alone failed to respond to G/P. No patients experienced lethal adverse events during the therapy, and the most common adverse event was pruritus. CONCLUSIONS: An 8- or 12-week G/P regimen is highly effective and safe in GT2 HCV-infected hemodialysis patients.

Safety and efficacy of elbasvir and grazoprevir in Japanese hemodialysis patients with genotype 1b hepatitis C virus infection.

BACKGROUND: The prevalence of hepatitis C virus (HCV) infection in hemodialysis patients is high and results in a poor prognosis. Thus, safer and more effective treatment regimens are required. In this prospective multicenter study, we investigated the efficacy and safety of the novel HCV-NS5A-inhibitor, elbasvir, and protease inhibitor, grazoprevir in Japanese hemodialysis patients with genotype 1b HCV infection. METHODS: This study is registered at the UMIN Clinical Trials Registry as UMIN00002578. A total of 23 Japanese dialysis patients with genotype 1b HCV infection who were treated with elbasvir and grazoprevir between January 2017 and March 2018 and followed for more than 12 weeks after treatment completion were included. We evaluated the sustained virologic response at 12 weeks after treatment completion (SVR12) and safety during treatment. RESULTS: Of the 23 patients, 7 had advanced liver fibrosis and 2 had a signature resistance-associated variant of NS5A (NS5A RAVs)-L31M/V or Y93H at baseline. All patients completed therapy, and 96.7% (22/23) of the patients achieved SVR12. All patients with advanced liver fibrosis and signature NS5A RAVs at baseline achieved SVR12 with a high safety profile. No patient experienced lethal or severe adverse events during therapy, and the most common adverse event was anemia. One patient, who was a non-responder to this therapy, had a history of failure with daclatasvir and asunaprevir therapies and had NS5A RAVs of A92K at baseline, but not signature NS5A RAVs. CONCLUSIONS: Grazoprevir and elbasvir combination is highly effective and safe for hemodialysis patients with genotype 1b HCV infection.