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Visc Med. 2016 April; 32(2): 121–126.
Published online 2016 April 5. doi:  10.1159/000444990
PMCID: PMC4926886

Antiviral Therapy in Patients with Viral Hepatitis and Hepatocellular Carcinoma: Indications and Prognosis



Chronic hepatitis B and C infections represent major risk factors for the development of hepatocellular carcinoma (HCC). Recently, the management of patients with viral hepatitis has dramatically changed. In the present review we discuss the impact of these developments on the prevention of HCC as well as the treatment of patients with HCC.


Studies indexed in Medline between 1990 and 2015 (November) were reviewed. The terms ‘hepatocellular carcinoma’, ‘HCC’, ‘hepatitis B’, ‘hepatitis C’, ‘viral hepatitis’, and combinations of these terms were used.


Patients with chronic hepatitis B or hepatitis C without HCC should be evaluated for antiviral therapy, since antiviral therapy was suggested to reduce the risk of HCC development. Cirrhotic patients infected with hepatitis B virus (HBV) require antiviral therapy, while cirrhotics infected with hepatitis C virus (HCV) need to be prioritized for therapy with interferon (IFN)-free regimens. Antiviral therapy should be considered in HBV-infected patients with HCC, especially to prevent tumor recurrence after curative-intended therapy or to prevent hepatic decompensation. HCV-infected patients with HCC should be considered in similar intention for IFN-free antiviral therapy, depending on the tumor stage and life expectancy.


Patients with viral hepatitis should be considered for antiviral treatment for the prevention of HCC development as well as during HCC treatment.

Keywords: Hepatocellular carcinoma, HCC, Viral hepatitis, Hepatitis B virus, HBV, Hepatitis C virus, HCV, Treatment


Hepatocellular carcinoma (HCC) represents the most common primary malignancy of the liver. With over 600,000 cases diagnosed yearly it is the fifth most common cancer worldwide and the second leading cause of cancer-related death. In more than 80% of the cases HCC develops within chronically inflamed and cirrhotic livers [1]. Major risk factors include infections with the hepatitis B virus (HBV) or hepatitis C virus (HCV) and alcohol-related cirrhosis. In addition, non-alcoholic steatohepatitis has recently emerged as a relevant disease etiology [2]. Moreover, it became apparent that other factors such as smoking increases, while e.g. coffee intake decreases the risk for developing an HCC [1].

From a global perspective, viral hepatitis is the leading cause for HCC, because it is a major cause for liver cirrhosis as a prerequisite for HCC. The 5-year cumulative risk of developing HCC for patients with cirrhosis ranges between 5 and 30%, depending on etiology, region, ethnicity, and stage of cirrhosis. Worldwide, HBV accounts for up to 55% of the cases of HCC and thus represents the most important risk factor for HCC [3,4]. Prospective cohort studies showed a 5- to 100-fold increase in the risk for developing HCC in chronically HBV-infected patients [1]. Likewise, meta-analyses of case-control and cross-sectional studies indicated that HBV-infected individuals display a 20-fold higher risk for HCC than non-infected individuals [1,4,5,6,7]. The incidence rates for HCC in Asian cohorts were 0.2 per 100 person-years in inactive carriers, 0.6 person-years with chronic HBV infection without cirrhosis, and 3.7 person-years in patients with compensated cirrhosis [4,8]. In contrast, there are only few data from European cohorts, which suggests that the HCC incidence ranges from 0.02 per 100 person-years in inactive carriers to 2.2 person-years in subjects with cirrhosis [7]. Although HBV-related HCC mostly occur in patients with established liver cirrhosis, HBV-HCC can also arise in the absence of cirrhosis [4,7]. Several studies have identified demographic and HBV-related characteristics as predictive for HCC development in the setting of chronic hepatitis B [4,7]; family history of HCC, older age, and male sex were correlated with the development of HCC. Moreover, longer duration of infection, hepatitis B virus e antigen seropositivity, high viral load, and genotype C were identified as independent risk factors of HCC development. In addition, high hepatitis B viral load was suggested to correlate with the risk of progression to cirrhosis, highlighting the potential benefit of an efficient antiviral therapy in patients with chronic hepatitis B infection [7].

While hepatitis B globally represents the most important risk factor for HCC, in the developed Western world, only 20% of HCC cases can be attributed to HBV infection, whereas the majority of HCC cases are suggested to be related to chronic hepatitis C infection [9]. A recent study reported that HCV was detected in up to 65% of patients with HCC in Italy and among 80% of HCC cases in Japan [4,10,11]. The rate of HCC among HCV-infected persons was estimated to range around 3% in 30 years of observation time [9]. Most HCV-related HCC arise in cirrhotic livers. The Hepatitis C Antiviral Long-Term Treatment Against Cirrhosis (HALT-C) trial even demonstrated that 8% of patients with advanced fibrosis developed HCC [12]. Besides liver fibrosis/cirrhosis, various other factors such as male sex, old(er) age, metabolic diseases, and alcohol abuse have been associated with the development of HCC in patients with chronic HCV. Moreover, HCV genotype 1b and coinfections with HIV or HBV were found more frequently in HCC patients. In contrast to HBV, there seems to be only a weak association between viral load and the risk of progression to HCC [7,9].

While in the past decades a dramatic decrease in cancer mortality was observed for distinct malignancies, the mortality from liver cancer in the USA rose by about 50% between 1990 and 2005 [13]. At present, despite tremendous scientific and clinical efforts to improve the treatment and diagnosis of HCC, the incidence of HCC still nearly equals its mortality rate [13,14,15]. Only a minority of about 25% of patients with HCC are suitable for resection or other potentially curative treatments. For these patients, 5-year survival rates of up to 70% are possible [13,14,15]. For the majority of palliative patients, however, classical anticancer agents are ineffective and relatively toxic to HCC patients with impaired liver function [13,14,15].

With respect to management, current HCC guidelines recommend a stage-dependent treatment approach: Patients at a very early (BCLC 0) or early (BCLC A) stage are candidates for curative treatment approaches such as liver transplantation, resection, and ablation. In case of an intermediate disease stage (BCLC B), transarterial chemoembolization (TACE) should be considered. Those patients with advanced diseases (BCLC C) should be evaluated for a systemic antitumor therapy, for which sorafenib has become the drug of choice in recent years [16,17,18]. Besides sorafenib, several other agents have been tested for their efficacy in HCC treatment. However, none of them have been successful as a first-line or second-line approach. Sunitinib, brivanib, erlotinib, and linifanib were found to be inferior when directly compared to sorafenib [19]. Brivanib and everolimus have failed to improve survival in second-line treatment after sorafenib [19]. In the same setting, ramucirumab, a novel anti-VEGFR2 antibody, demonstrated only efficacy in a subgroup of patients with alpha-fetoprotein levels > 400 ng/ml [20]. Thus, despite these major efforts sorafenib still represents the gold standard in the systemic treatment of HCC. Recent developments include the use of nivolumab, a PD-1 antibody, or c-Met inhibition in case of Met-overexpressing tumors [19].

Because HCC arise in most cases as a result of chronic inflammation in cirrhotic livers [1], efficient HCC treatment is frequently hampered by an impaired liver function in the setting of decompensated or progressive cirrhosis [4,7]. Thus, treatment of chronic liver inflammation by providing antiviral treatment might represent a primary and secondary prevention measure in this setting [4,7]. Accordingly, it was demonstrated in large patient cohorts that a successful antiviral treatment against hepatitis B and hepatitis C can successfully prevent the long-term development of HCC as well as improve survival in patients with established HCC [4,7]. In the following, we will summarize available treatment strategies in patients with viral hepatitis and highlight how they might be implemented in treatment algorithms of HCC.

Current Treatment Options for Hepatitis B and Implications of Antiviral Therapy for HCC Development

The ultimate therapeutic goal for HBV-infected patients is the prevention of cirrhosis, cirrhosis complications, and HCC [21]. There are two principal conceptual treatment options for hepatitis (table (table1):1): (a) interferon (IFN)-based therapy, leading to immune-mediated control of HBV replication, (b) nucleoside or nucleotide analog therapy, resulting in suppression of HBV replication [22]. Current guidelines, e.g. by the European Association for the Study of the Liver (EASL), summarize the recommendations for the management of hepatitis B [21]. In principle, pegylated IFN therapy (48 weeks) may result in sustained (off-)treatment responses and might induce hepatitis B surface antigen loss, but only in a minority of patients [22]. Nucleos(t)ide analogs do not only suppress the virus but improve liver fibrosis in the majority of patients and can reverse liver cirrhosis [23]. Unfortunately, these drugs are unable to permanently cure viral infection [24]. While IFN can be considered in patients with certain positive predictive factors, nucleos(t)ide analogs will be the treatment of choice for most patients with HBV infection due to their excellent tolerability, excellent efficacy in suppressing HBV replication, and their applicability even in patients with liver cirrhosis (table (table1)1) [24]. Ongoing studies evaluate the combination of IFN and nucleos(t)ide analogs, aiming at permanently eradicating the virus in selected patients [25].

Table 1
Current treatment concepts for hepatitis B

Tenofovir and entecavir are the two most recently approved nucleos(t)ide analogs that both efficiently suppress HBV replication and have a very low risk of developing resistance. Even after 7 years of therapy, no resistance to tenofovir was detected in patients originally included in the phase III clinical trials [26]. Moreover, the long-term safety profile of both drugs appears favorable, although nucleotide analogs may mildly increase the risk of hip fracture due to osteopenia [27]. Both drugs can be safely administered to patients with advanced fibrosis or cirrhosis. The long-term viral suppression of HBV by nucleos(t)ide analogs is associated with improved survival, reduced rate of cirrhosis complications (e.g. related to portal hypertension), and reduced risk of developing HCC [22,28,29]. However, it is important to note that neither entecavir nor tenofovir completely abolish the risk for HCC, especially in patients with liver cirrhosis [30].

Current and Near-Future Treatment Options for Hepatitis C

The goal of antiviral treatment for hepatitis C is a complete HCV eradication. This is currently defined in clinical practice as a sustained virological response (SVR) at 12 weeks after therapy, as assessed by a sensitive molecular method (HCV polymerase chain reaction) with a lower limit of detection <15 IU/ml [31]. This surrogate end point has been shown to reflect persistent serum viral eradication [22]. In 2014 and 2015, several new direct-acting antiviral agents (DAAs) have been approved for the treatment of hepatitis C, resulting in an impressive list of therapeutic options (fig. (fig.1).1). Despite some differences, all these DAAs show a high efficacy and excellent tolerability, which allowed to shorten treatment duration with the new therapeutic regimens and permitted to include patients with comorbidities (e.g. psychiatric disorders) and advanced liver disease [31]. Despite the enormous costs of these options, IFN-free regimens are the best choice because of their virological efficacy, ease of use, and tolerability [31]. It is expected that at least two additional antiviral drug combinations will be available in 2016: (a) the second-generation protease inhibitor grazoprevir in combination with the NS5A inhibitor elbasvir (developed by Merck) [32,33], which can be safely used even in patients with renal failure [34], (b) the pan-genotypic NS5A inhibitor velpatasvir in combination with the pan-genotypic polymerase inhibitor sofosbuvir (developed by Gilead Sciences) [35,36], which can be safely used even in patients with decompensated liver cirrhosis (fig. (fig.1)1) [37].

Fig. 1
Current and investigational treatment options for hepatitis C. IFN-based regimen should not be used in patients with liver cirrhosis. GT = Genotype; RBV = ribavirin.

In principle, chronic HCV infection is an indication for antiviral therapy [38], and especially patients with advanced fibrosis, cirrhosis, or decompensated cirrhosis should be prioritized for immediate treatment [31]. There is compelling evidence from several clinical studies that an SVR can provide protection from the development of liver-related complications, hence improving survival of HCV cirrhotics [22,39,40]. In addition, the majority of cirrhotic patients subjected to IFN-free therapy improve their liver function as assessed by the MELD (model of end-stage liver disease) score [41]. However, the treatment of HCV-infected patients with liver cirrhosis is challenging and needs to consider the stage of cirrhosis (compensated vs. decompensated), HCV genotype, comorbidities (e.g. renal failure or HIV coinfection), potential drug-drug interactions, and prior treatment experiences (e.g. relapse from DAA therapy) [31]. While sofosbuvir, daclatasvir, or ledipasvir can also be used in decompensated cirrhosis, protease inhibitor-based regimens (e.g. including paritaprevir or simeprevir) should not be used in Child B or C cirrhotics (table (table2).2). Some uncertainties still exist about the need of ribavirin and the optimal treatment duration with distinct regimens in cirrhotic patients (table (table2),2), and large real-life cohort studies are conducted to verify if the expected SVR rates can be extrapolated from clinical trials into clinical practice. HCV-infected patients with high MELD scores, e.g. exceeding 15 or 20, should primarily be evaluated for liver transplantation, while the benefit of antiviral therapy in this setting is not well established [31].

Table 2
Selected IFN-free treatment options for hepatitis C in patients with liver cirrhosisa

Antiviral Therapy for the Prevention of HCC

The gold standard to prevent HBV-related HCC is by means of immunizing infants, i.e. so-called ‘primary prevention’. Meanwhile, many different countries have implemented hepatitis B vaccination programs and demonstrated its success. As an example, 20 years after starting the program in Taiwan the incidence of HCC among vaccinated children has dropped by 70% [9]. Unfortunately, no vaccination is available for HCV at present [9].

In patients chronically infected with HBV or HCV, antiviral therapies are the means to avoid or reduce HCC occurrence. Current guidelines define the goal of therapy for chronic hepatitis B as ‘to improve quality of life and survival by preventing progression of the disease to cirrhosis, decompensated cirrhosis, end-stage liver disease, HCC and death’. Observational studies showed that IFN therapy reduced HBV progression to cirrhosis and decreased HCC incidences in Caucasian and Asian patients [42]. Similarly, nucleos(t)ide analogs suppress viral replication, leading to significantly lower HCC incidence rates in Asian patients compared to historical untreated controls [42]. However, for Caucasian patients no data sets are currently available [42]. In this context, the benefit of virological remission was controversial. A large European study (VIRGIL) found after a follow-up of 1.7 years that patients achieving a virological response to entecavir had a 71% lower probability of a clinical event (HCC, hepatic decompensation, or death) than those who did not [43]. Due to the higher risk of HCC in cirrhotic liver, the beneficial effect of preventing HCC is more apparent in cirrhotic compared to non-cirrhotic HBV-infected patients [43,44]. Importantly, chronic HBV infection cannot be completely eradicated due to the persistence of covalently closed circular DNA in the nucleus of infected hepatocytes. Moreover, the HBV genome can integrate into the host genome and might favor oncogenesis and the development of HCC [45,46], highlighting the need for intensive surveillance even in patients with effective viral suppression.

In HCV-infected patients, several meta-analyses have examined the relationship between SVR and the risk of HCC development, showing a significant HCC reduction in patients with SVR [4,7]. However, most of these studies are observational as well as retrospective and were based on SVR achieved with IFN-based therapies. Nevertheless, it can be extrapolated that the new IFN-free regimens will also reduce the risk of HCC development. Patients with cirrhosis remain at risk of life-threatening complications; however, hepatic fibrosis may regress upon SVR, thereby reducing the threat of complications such as hepatic failure and portal hypertension. Therefore, current guidelines recommend considering HCV therapy in all patients with compensated or decompensated chronic liver disease. Importantly, in patients with advanced fibrosis and cirrhosis, HCV eradication reduces the rate of decompensation and the risk of HCC, which also stresses that HCC surveillance should be continued.

Taken together, all patients with chronic hepatitis B and C should be evaluated for potential treatment as defined in the current guidelines [47]. Successfully treated patients display a lower risk of progressing to liver cirrhosis and HCC.

Antiviral Therapy in Patients with HCC

Two principal goals of antiviral treatment exist for patients with viral hepatitis: (i) the prevention of tumor recurrence in case of curative-intended treatment, and (ii) the reduction of inflammation and the stabilization of liver function in patients receiving palliative-intended treatments.

Patients receiving curative tumor resection or ablation suffer from recurrence rates of up to 70% after 5 years, reflecting either intrahepatic metastases (true recurrences) or the development of de novo tumors [48]. Different strategies to prevent recurrence have been tested to prolong tumor-free or overall survival in patients after HCC resection. However, all of these tumor-centered approaches failed in the setting of larger randomized studies, the largest one being the STORM trial [47]. In the last years, nucleos(t)-ide analogs have been shown to reduce recurrence and prolong survival after resection of HBV-related HCC and are therefore recommended after curative hepatectomy. Moreover, such a treatment will reduce the risk of hepatic decompensation and progression of liver cirrhosis also in HCC patients at a more advanced stage and should therefore be administered to these patients [4,7].

Chronic HCV infection represents the leading cause of HCC development in the USA and Europe. IFN-based therapies have been shown to improve outcomes following HCC ablation or resection. However, most of these studies were observational as well as retrospective and were based on older IFN-based treatment protocols. Nevertheless, it appears plausible and highly likely that the high rates of SVR achieved with new IFN-free regimens could also reduce the risk of HCC recurrence following resection or ablation in HCV-infected patients [7]. Due to the underlying chronic liver disease, these patients have an indication for antiviral therapy. This also accounts for patients with more advanced HCC when their life expectancy is higher than 6 months, as eradication of HCV might stabilize liver function and avoid decompensations. Preliminary studies with Child B or C cirrhotic patients, treated for HCV with sofosbuvir and either ledipasvir or daclatasvir within clinical trials (SOLAR-1/-2 or ALLY-1 trial) or compassionate use programs, indicate that the majority of patients will stabilize or improve their liver function during therapy [41,49].

In summary, patients with HCC and chronic HBV or HCV infection are candidates for antiviral therapy. Treatment might reduce the risk of tumor recurrence or avoid the progression of liver fibrosis, thus increasing the therapeutic window for tumor-specific therapies in these patients.

Recommendations for Antiviral Therapy in Patients with Viral Hepatitis and HCC

  • – Patients with chronic hepatitis B or hepatitis C without HCC must be evaluated for antiviral therapy because effective antiviral therapy can reduce the risk of HCC development.
  • – Patients without HCC but with advanced fibrosis or cirrhosis due to viral hepatitis are at a particularly high risk for HCC development, making HCC surveillance (ultrasound every 6 months) mandatory. HBV-infected cirrhotics require antiviral therapy (entecavir or tenofovir), while HCV-infected cirrhotics need to be prioritized for therapy with IFN-free regimens.
  • – Antiviral therapy should be considered in HBV-infected patients with HCC, especially to prevent tumor recurrence after curative-intended therapy (e.g. resection) and to prevent hepatic decompensation in cases of advanced liver disease.
  • – Depending on tumor stage and life expectancy, HCV-infected patients with HCC should be considered for IFN-free antiviral therapy, especially in order to prevent tumor recurrence after curative-intended therapy (e.g., resection) and to prevent hepatic decompensation in cases of advanced liver disease.
  • – The potential benefit of antiviral therapy in patients with HCC is currently being evaluated in large registry observational studies.

Disclosure Statement

The authors have nothing to disclose related to this manuscript.


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