Hepatocellular carcinoma recurrence after direct-acting antiviral therapy: an individual patient data meta-analysis.

OBJECTIVE: The benefit of direct-acting antivirals (DAAs) against HCV following successful treatment of hepatocellular carcinoma (HCC) remains controversial. This meta-analysis of individual patient data assessed HCC recurrence risk following DAA administration. DESIGN: We pooled the data of 977 consecutive patients from 21 studies of HCV-related cirrhosis and HCC, who achieved complete radiological response after surgical/locoregional treatments and received DAAs (DAA group). Recurrence or death risk was expressed as HCC recurrence or death per 100 person-years (100PY). Propensity score-matched patients from the ITA.LI.CA. cohort (n=328) served as DAA-unexposed controls (no-DAA group). Risk factors for HCC recurrence were identified using random-effects Poisson. RESULTS: Recurrence rate and death risk per 100PY in DAA-treated patients were 20 (95% CI 13.9 to 29.8, I2=74.6%) and 5.7 (2.5 to 15.3, I2=54.3), respectively. Predictive factors for recurrence were alpha-fetoprotein logarithm (relative risk (RR)=1.11, 95% CI 1.03 to 1.19; p=0.01, per 1 log of ng/mL), HCC recurrence history pre-DAA initiation (RR=1.11, 95% CI 1.07 to 1.16; p<0.001), performance status (2 vs 0, RR=4.35, 95% CI 1.54 to 11.11; 2 vs 1, RR=3.7, 95% CI 1.3 to 11.11; p=0.01) and tumour burden pre-HCC treatment (multifocal vs solitary nodule, RR=1.75, 95% CI 1.25 to 2.43; p<0.001). No significant difference was observed in RR between the DAA-exposed and DAA-unexposed groups in propensity score-matched patients (RR=0.64, 95% CI 0.37 to 1.1; p=0.1). CONCLUSION: Effects of DAA exposure on HCC recurrence risk remain inconclusive. Active clinical and radiological follow-up of patients with HCC after HCV eradication with DAA is justified.

Spleen Stiffness Measurements Predict the Risk of Hepatic Decompensation After Direct-Acting Antivirals in HCV Cirrhotic Patients.

PURPOSE: Little evidence is available regarding the risk of hepatic decompensation (HD) after direct-acting antivirals (DAAs) in patients with advanced chronic liver disease. Our aim was to assess the risk of decompensation and the prognostic role of noninvasive tests, such as liver (LSM) and spleen (SSM) stiffness measurements, in the prediction of decompensation after sustained virologic response (SVR) by DAAs. MATERIALS AND METHODS: A cohort study involving 146 cirrhotic patients treated with DAAs in our tertiary center with LSM and SSM available both before and six months after treatment (SVR24). A historical cohort of 92 consecutive cirrhotic patients with active HCV was used as a control group. A propensity score inverse probability weighting method was used to account for differences between the groups. Time-dependent models for the prediction of decompensation were applied to account for changes in noninvasive tests after therapy. RESULTS: The decompensation incidence in the DAA cohort was 7.07 (4.56-10.96) per 100 person-years (PYs), which was significantly lower than in the active HCV cohort. The DAA therapy was an independent protective factor for HD development (SHR: 0.071, 95 %-CI: 0.015-0.332). SSM ≥ 54 kPa was independently associated with decompensation despite SVR achievement (SHR: 4.169, 95 %-CI: 1.050-16.559), alongside with a history of decompensation (SHR: 7.956, 95 %-CI: 2.556-24.762). SSM reduction < 10 % also predicted the risk of decompensation after SVR24. CONCLUSION: The risk of decompensation was markedly reduced after DAA therapy, but it was not eliminated. Paired SSM values stratified the risk of decompensation after SVR better than other noninvasive tests.

A multimedia multilanguage web-based platform can assess and increase the awareness on HCV infection of Pakistani people living in Italy.

Global eradication of Hepatitis C Virus (HCV) is hindered by infection persistence among high-prevalence ethnic groups with insufficient access to care. Educational interventions to raise awareness on HCV have led to identification of submerged HCV cases. Our aim was to evaluate the effectiveness of a web-based platform to assess and raise the awareness of HCV among Pakistani people living in northern Italy. We created a website in Italian and Urdu language (https://survey-hcv6.webnode.it), and shared it to Pakistani people in Emilia-Romagna through Facebook groups. Participants had to fill a 15-item questionnaire on HCV infection, then watch a video on HCV, and respond to the questionnaire again. McNemar's chi-square and negative binomial multivariable regression analysis yielding incidence rate ratio (IRR) were applied. 339 subjects from 600 (57%) participated and filled the baseline questionnaire. The knowledge on HCV infection was scanty. For instance, 32% were not aware of HCV, 42% only knew that HCV infection may be long term, and only 14% knew the access to DAA treatment is provided by the Health Service. Independent predictors of worse knowledge on HCV were male gender (IRR 1.19), low instruction level (IRR 1.26), Urdu language preference (IRR 1.22), past use of intravenous drugs (1.2) and no previous HCV testing (IRR 1.36). The educational video significantly improved the knowledge on HCV among 67 subjects who refilled the questionnaire, as 97% were later aware of HCV, 99% of the long-term duration of HCV infection and 93% of the access to DAAs provided by Italian Health Service. We found a modest level of knowledge on HCV infection among Pakistani people in northern Italy, identifying predictors of worse awareness. We provided a multimedia platform which significantly improved the knowledge on HCV infection. Consequently, this approach might translate into an improved linkage to care.

Imaging features of microvascular invasion in hepatocellular carcinoma developed after direct-acting antiviral therapy in HCV-related cirrhosis.

OBJECTIVES: To evaluate imaging features of microvascular invasion (MVI) in hepatocellular carcinoma (HCC) developed after direct-acting antiviral (DAA) therapy in HCV-related cirrhosis. METHODS: Retrospective cohort study on 344 consecutive patients with HCV-related cirrhosis treated with DAA and followed for 48-74 weeks. Using established imaging criteria for MVI, HCC features were analysed and compared with those in nodules not occurring after DAA. RESULTS: After DAA, HCC developed in 29 patients (single nodule, 18 and multinodular, 11). Median interval between therapy end and HCC diagnosis was 82 days (0-318). Forty-one HCC nodules were detected (14 de novo, 27 recurrent): maximum diameter was 10-20 mm in 27, 20-50 mm in 13, and > 50 mm in 1. Imaging features of MVI were present in 29/41 nodules (70.7%, CI: 54-84), even in 17/29 nodules with 10-20 mm diameter (58.6%, CI: 39-76). MVI was present in only 17/51 HCC nodules that occurred before DAA treatment (33.3%, CI: 22-47) (p= 0.0007). MVI did not correlate with history of previous HCC. CONCLUSIONS: HCC occurs rapidly after DAA therapy, and aggressive features of MVI characterise most neoplastic nodules. Close imaging evaluations are needed after DAA in cirrhotic patients. KEY POINTS: • In HCV cirrhosis, hepatocellular carcinoma develops soon after direct-acting antiviral therapy. • HCC presents imaging features of microvascular invasion, predictive of more aggressive progression. • Cirrhotic patients need aggressive and close monitoring after direct-acting antiviral therapy.

Early occurrence and recurrence of hepatocellular carcinoma in HCV-related cirrhosis treated with direct-acting antivirals.

BACKGROUND & AIMS: Hepatocellular carcinoma (HCC) represents a serious complication of HCV-related cirrhosis. New direct-acting antivirals (DAA) cure HCV infection in over 90% of patients. The aim of this study was to evaluate the early occurrence and recurrence of HCC in cirrhotic patients treated with DAA. METHODS: We analysed 344 consecutive cirrhotic patients, without HCC, who were treated with DAA, and followed for 24weeks. Fifty-nine patients had previous HCC. RESULTS: DAA therapy induced sustained virological response in 91% of patients. During 24-week follow-up, HCC was detected in 26 patients (7.6%, 95% CI: 4.99-10.84): 17 of 59 patients (28.81%, 95% CI: 17.76-42.07) with previous HCC and 9 of 285 patients (3.16%, 95% CI: 1.45-5.90) without previous HCC. Child-Pugh Class B, more severe liver fibrosis, lower platelet count, and previous HCC were significantly associated with HCC development, at univariate analysis. At multivariate analysis, Child-Pugh class (p=0.03, OR: 4.18, 95% CI: 1.17-14.8) and history of HCC (p<0.0001, OR: 12.0, 95% CI: 4.02-35.74) resulted independently associated with HCC development. Among the 59 patients with previous HCC, younger age and more severe liver fibrosis were significantly associated with HCC recurrence, both at univariate and at multivariate analysis. CONCLUSIONS: In patients with HCV-related cirrhosis, DAA-induced resolution of HCV infection does not seem to reduce occurrence of HCC, and patients previously treated for HCC have still a high risk of tumour recurrence, in the short term. For these reasons, all cirrhotic patients should be closely monitored and followed during and after antiviral therapy. LAY SUMMARY: New direct-acting antivirals are able to eradicate HCV infection in over 90% of patients with advanced liver disease. Unfortunately, the occurrence of liver cancer is not reduced in effectively treated cirrhotic patients. In addition, patients previously treated for HCC have still a high risk of tumour recurrence in the short term, despite DAA treatment.

Liver Stiffness Evaluation in Chronic Hepatitis C Patients with Cirrhosis before and after Direct-Acting Antivirals.

After the introduction of direct-acting antivirals, parallel significant clinical progress has been achieved in the assessment of liver fibrosis progression/regression before treatment and during the follow-up of the cirrhotic patients with chronic hepatitis C virus (HCV) infection. The evolution of chronic hepatitis C into liver cirrhosis is correlated with an extensive accumulation of the extracellular matrix, leading to the formation of large amounts of fibrotic tissues that, initially, are concentrated in periportal areas and, in the later stages, surround the nodules of regenerating hepatocytes. The progressive increase in the fibrotic matrix contributes to vascular disturbances (favoring the development of portal hypertension) and to microenvironmental changes. The four clinical stages of liver cirrhosis are predictors for different clinical scenarios. The wide-ranging functions of the liver require different methods for their assessment. The non-invasive evaluation using transient elastography is useful in determining the longitudinal modifications of fibrosis during and after treatment with direct-acting antivirals. The liver stiffness evaluation, known to have a wide range of values in cirrhotic patients, can offer different prognostic implications after sustained virological response. This review discusses the different time points of liver stiffness evaluation that appear to show a more well-defined propensity to identify adequate monitoring schedules for these patients.

Liver Stiffness Values to Predict Occurrence and Recurrence of Hepatocellular Carcinoma.

Globally, liver cancer is the third most frequent etiology of cancer death, with the rates of occurrence of both new cases and mortality estimated to increase. Given the availability of multiple treatments, interdisciplinary management of the patient is crucial. Moreover, the diagnostic assessment of patients with severe liver fibrosis is essential for the staging of HCC and liver cirrhosis and early diagnosis of HCC. In this context, non-invasive evaluation plays a critical role in identifying prognostic factors of clinical application for the surveillance of the occurrence or recurrence of HCC. The new frontiers of transient elastography have become a useful tool to assess the risk of HCC occurrence and recurrence. There has been a major increase in studies investigating the cutoff liver stiffness value that best predicts the need for monitoring for the onset of HCC. Therefore, this review discusses the new advances that have occurred in the last four years on HCC, highlighting the new frontiers of non-invasive evaluation of HCC subjects, with particular attention regarding the clinical application of liver stiffness assessment for de novo HCC and predicting recurrence in patients with chronic HCV achieving sustained virological response after treatment with direct antiviral agents.

Management of Delta Hepatitis 45 Years after the Discovery of HDV.

In 1977 the viral Delta agent was discovered and subsequently characterized as the hepatitis Delta virus (HDV). HDV infection is associated with HBV infection since the defective HDV needs HBV to infect and replicate in the liver. Even if not a frequent cause of chronic liver disease, HDV infection is responsible for an aggressive progression of hepatitis towards advanced liver disease. At present, no FDA approved treatment exists for this specific form of hepatitis. Interferon alfa has been recommended as off-label therapy by major scientific societies (AASLD, EASL and APASL) and has proved effective in about one quarter of patients. In recent years, new therapeutic approaches have been studied, and EMA has approved a new drug (bulevirtide) for Delta hepatitis. In this review, we encompass the 45-year journey of managing Delta hepatitis and address the most recent developments in treating this severe and aggressive liver disease.

Evaluation of Drug Interactions in Patients Treated with DAAs for Hepatitis C Therapy with Comorbidities and Cardiovascular Issues-A Delphi Consensus Project.

Orally administered direct-acting antivirals (DAAs) have dramatically changed the possibility of curing HCV (hepatitis C virus) infection, with the two principal HCV regimens based on the combination of glecaprevir + pibrentasvir (GLE-PIB) and sofosbuvir + velpatasvir (SOF-VEL). A combination of drugs containing NS3/4A protease inhibitors, as well as the fact that almost all HCV patients can be treated at present, may expose patients to a higher rate of drug-drug interactions (DDIs). The hepatitis C treatment recommendations from the EASL (European Association for the Study of the Liver) state that, prior to starting treatment with a DAA, a detailed drug history should be taken; yet, the decision on managing the potential DDIs is not always clear. For this reason, a group of Italian cardiologists and hepatologists promoted a survey among colleagues to assess the controversial issues when treating patients with chronic hepatitis C taking concomitant cardiovascular drugs, aiming to reach a consensus on the best practice to apply when treating a patient with chronic hepatitis C who is taking concomitant drugs for cardiovascular diseases. Two consecutive questionnaires were proposed between June and July 2022 to a qualitative Expert Panel (EP) of 14 gastroenterologists, infectologists, hepatologists, and internists, with statistical analyses performed on 100% of the responses for both questionnaires. Agreement among experts was assessed following the Delphi method as developed by the RAND Corporation. The interviewed experts consider DDIs a critical clinical problem to be evaluated in HCV patients. Therefore, dose changes, drug substitution, and discontinuation of concomitant cardiovascular drugs should be discouraged, even if planned for a relatively short period. Since oral DAAs have different DDIs profiles, hepatologists should prefer the antiviral DAA combination presenting the lowest instance of potential interactions.

Immune inflammation indicators and ALBI score to predict liver cancer in HCV-patients treated with direct-acting antivirals.

BACKGROUND: Unexpectedly high occurrence or recurrence rate of hepatocellular carcinoma (HCC) has been observed in patients with chronic hepatitis C receiving direct-acting antivirals (DAAs) therapy. AIMS: We evaluated the predictive value of albumin-bilirubin (ALBI) score and immune-inflammation indicators to identify the risk of occurrence or recurrence of HCC in patients treated with DAAs in a real life setting. METHODS: In this retrospective cohort study, we analysed data from 514 patients with cirrhosis who were prospectively enrolled for treatment with DAAs. We assessed baseline neutrophil to lymphocyte ratio (NLR), systemic immune-inflammation index (SII), platelet to lymphocyte ratio (PLR), aspartate aminotransferase-lymphocyte ratio (ALRI) index and ALBI score. RESULTS: In patients with no history of HCC (N = 416), increased AST, bilirubin, ALRI, and ALBI score, and decreased albumin and platelets were significantly associated with an increased risk of HCC development, at univariate analysis. At multivariate analysis, increase in ALBI grade (p = 0.038, HR: 2.35, 95% CI: 1.05-5.25) and decrease in platelets (p = 0.048, HR: 0.92, 95% CI: 0.85-1.0) were independently associated with HCC development. In patients with previous HCC (N = 98), adjusting for the time from HCC treatment, increased ALRI (p = 0.008, HR: 1.05, 95% CI: 1.01-1.09) was significantly associated with a risk of recurrence. CONCLUSION: ALBI score, platelet count and ALRI are promising, easy to perform and inexpensive tools for identifying patients with higher risk of HCC after treatment with DAAs.

Spleen stiffness mirrors changes in portal hypertension after successful interferon-free therapy in chronic-hepatitis C virus patients.

AIM: To investigate changes in spleen stiffness measurements (SSMs) and other non-invasive tests (NITs) after treatment with direct-acting antivirals (DAAs) and identify predictors of SSM change after sustained virological response (SVR). METHODS: We retrospectively analysed 146 advanced-chronic liver disease (ACLD) patients treated with DAA with available paired SSM at baseline and SVR24. Liver stiffness (LSM), spleen diameter (SD), platelet count (PLT) and liver stiffness-spleen diameter to platelet ratio score(LSPS) were also investigated. LSM ≥ 21 kPa was used as a cut-off to rule-in clinically significant portal hypertension (CSPH). SSM reduction > 20% from baseline was defined as significant. RESULTS: SSM significantly decreased at SVR24, in both patients with and without CSPH; in 44.8% of cases, SSM reduction was > 20%. LSPS significantly improved in the entire cohort at SVR24; SD and PLT changed significantly only in patients without CSPH. LSM significantly decreased in 65.7% of patients and also in 2/3 patients in whom SSM did not decrease. The independent predictor of decreased SSM was median relative change of LSM. CSPH persisted in 54.4% patients after SVR. Delta LSM and baseline SSM were independent factors associated with CSPH persistence. CONCLUSION: SSM and other NITs significantly decrease after SVR, although differently according to the patient's clinical condition. SSM faithfully reflects changes in portal hypertension and could represent a useful NIT for the follow-up of these patients.

Hepatocellular carcinoma risk assessment by the measurement of liver stiffness variations in HCV cirrhotics treated with direct acting antivirals.

BACKGROUND: Direct-acting antivirals (DAA) are an effective treatment for hepatitis C virus infection. However, sustained virologic response (SVR) after DAA treatment does not seem to reduce the risk of hepatocellular carcinoma (HCC) development in these patients. Liver stiffness measurement (LSM) may predict the risk of developing HCC in liver cirrhosis patients. AIMS: The aim of our study was to evaluate the role of LSM variation as predictor of HCC development in patients treated with DAA. METHODS: In 139 HCV-related cirrhotic patients, LSM and laboratory tests were carried out at baseline (BL) and at the end of DAA treatment (EOT). Patients were followed for at least 6 months after the EOT. LSM reduction was expressed as Delta LS (∆LS). Cox regression analysis was used to identify prognostic factors for HCC development after DAA. RESULTS: Median LSM values were significantly reduced from BL to EOT (from 18.6 to 13.8 kPa; p < 0.001). The median ∆LS was -26.7% (IQR: -38.4% -13.6%). During a median follow-up of 15 months after DAA treatment, 20 (14.4%) patients developed HCC. Significant LSM reduction was observed both in patients who developed HCC and in those who did not, but this was significantly lower in the patients who developed HCC (-18.0% vs -28.9% p = 0.005). At multivariate analysis, ∆LS lower than -30%, Child-Turcotte-Pugh-B and history of HCC were independently associated with HCC development. CONCLUSION: Our results indicate that ∆LS is a useful non-invasive marker for predicting HCC development after DAA treatment.

Low recurrence rate of hepatocellular carcinoma after liver transplantation: better patient selection or lower immunosuppression?

BACKGROUND: Liver transplantation is currently offered to a limited number of patients with hepatocellular carcinoma (HCC) because of strict criteria introduced in the past to avoid recurrence. Immunosuppression represents a risk factor for tumor growth; the schedules of the immunosuppressant drugs have been modified through the years, aiming to reduce their dosage to the effective minimum. METHODS: A series of 106 consecutive patients with HCC who underwent transplantation over a 15-year period at a single institution was retrospectively reviewed to ascertain whether tumor recurrence was influenced by the Milano criteria presently adopted in patient selection and whether the dosage of immunosuppressant agents administered was associated with tumor recurrence. Fifteen patients who died postoperatively and 9 with a follow-up of less than 1 year were excluded; presence of the Milano criteria, tumor-node-metastasis staging, and the cumulative dosage of the single immunosuppressants given at different intervals in the first postoperative year were analyzed in the remaining 82 patients. The influence of these variables on overall and recurrence-free survival was assessed statistically. RESULTS: The Milano criteria did not influence recurrence-free survival, which was instead associated with the cumulative dosage of cyclosporine administered in the first postoperative year (93% 5-year recurrence-free survival for patients given low dosage vs. 76% for those given high dosage; P=0.01); T3 and T4 tumors did worse than T1 and T2 tumors. CONCLUSIONS: Current limits to transplantation for HCC might be reassessed in view of modified patient management; immunosuppression should be minimized in these patients.

Ribavirin for chronic hepatitis C: and the mystery goes on.

Twenty years ago, ribavirin was first used in the treatment for chronic hepatitis C. After few years, ribavirin, in combination with interferon-alpha, showed a dramatic synergistic efficacy against hepatitis C virus infection, leading to viral clearance in about 50% of patients. Recent discovery of potent inhibitors of hepatitis C virus proteases did not replace ribavirin as the mainstay of combination therapy for chronic hepatitis C. Despite this fundamental role of ribavirin, many aspects of the mechanism of action and of the optimal dose and duration of therapy remain to be discovered or settled. In the present review, the authors recall the milestones in the history of ribavirin and try to shed light on the more relevant features of ribavirin action and utilization, and on the clinical problems encountered in managing and optimizing treatment for chronic hepatitis C. Finally, some potential off-label use of this drug in most difficult-to-treat subjects is pointed out. In conclusion, even if a sort of mystery surrounds ribavirin, its efficacy against hepatitis C virus infection fortunately remains lasting and stable.