Brivanib治疗肝癌的临床研究进展

Brivanib可同时抑制成纤维细胞生长因子受体(FGFR)-1、FGFR-2、FGFR-3、血管内皮细胞生长因子受体(VEGFR)-2和VEGFR-3,以达到抑制肿瘤新生血管形成及肿瘤细胞生长的作用。旨在总结Brivanib治疗肝癌的进展,已完成的Ⅰ和Ⅱ期临床试验结果均证实了Brivanib在肝癌治疗中的安全性和有效性。然而,1项已完成的Ⅲ期随机双盲安慰剂对照研究表明,Brivanib作为晚期肝癌二线治疗手段(即Sorafenib治疗失败者)并未显著改善患者的总体生存期。另1项Ⅲ期随机双盲对照试验结果也表明,Brivanib作为晚期肝癌一线治疗手段并未比Sorafenib显著改善患者的总体生存期。这2项临床试验的失败使得其他两项有关Brivanib治疗肝癌的临床试验提前终止。通过分析以上研究认为亚组分析以及事先筛选Brivanib可能获益的肝癌患者(即FGF信号途径激活的肝癌患者)也许对进一步探究Brivanib的在肝癌治疗中的角色是必要的。     

Targeted systemic therapies for hepatocellular carcinoma: clinical perspectives, challenges and implications

Hepatocellular carcinoma(HCC) is a lethal disease in most patients,due to its aggressive course and a lack of effective systemic therapies for advanced disease.Surgical resection and liver transplantation remain the only curative options for a small subset of patients.Few patients with HCC are diagnosed early enough to be eligible for curative treatment.Angiogenesis inhibition is a natural therapeutic target for all solid tumors,but particularly for the highly vascularized HCC tumors.With the approval of the targeted agent sorafenib,there are now additional options for patients with HCC.Although sorafenib does produce some improvement in survival in HCC patients,the responses are not durable.In addition,there are significant dermatologic,gastrointestinal,and metabolic toxicities,and,as importantly,there is still limited knowledge of its usefulness in special subpopulations with HCC.Other angiogenesis inhibitors are in development to treat HCC both in the first-line setting and for use following sorafenib failure;the furthest in development is brivanib,a dual fibroblast growth factor pathway and vascular endothelial growth factor receptor inhibitor.Additional agents with antiangiogenic properties also in phase Ⅱ and Ⅲ development for the treatment of patients with HCC include bevacizumab,ramucirumab,ABT-869,everolimus and ARQ 197.     

Treatment strategies for advanced hepatocellular carcinoma: Sorafenib vs hepatic arterial infusion chemotherapy

Sorafenib is used worldwide as a first-line standardsystemic agent for advanced hepatocellular carcinoma(HCC) on the basis of the results of two large-scale Phase Ⅲ trials. Conversely,hepatic arterial infusion chemotherapy(HAIC) is one of the most recommended treatments in Japan. Although there have been no randomized controlled trials comparing sorafenib with HAIC,several retrospective analyses have shown no significant differences in survival between the two therapies. Outcomes are favorable for HCC patients exhibiting macroscopic vascular invasion when treated with HAIC rather than sorafenib,whereas in HCC patients exhibiting extrahepatic spread or resistance to transcatheter arterial chemoembolization,good outcomes are achieved by treatment with sorafenib rather than HAIC. Additionally,sorafenib is generally used to treat patients with Child-Pugh A,while HAIC is indicated for those with either Child-Pugh A or B. Based on these findings,we reviewed treatment strategies for advanced HCC. We propose that sorafenib might be used as a first-line treatment for advanced HCC patients without macroscopic vascular invasion or Child-Pugh A,while HAIC is recommended for those with macroscopic vascular invasion or Child-Pugh A or B. Additional research is required to determine the best second-line treatment for HAIC non-responders with Child-Pugh B through future clinical trials.     

Systemische Therapie des hepatozellul?ren Karzinoms

Sorafenib, a receptor tyrosine kinase inhibitor with anti-proliferative and anti-angiogenic activity is currently the only approved systemic treatment for patients with hepatocellular carcinoma (HCC). It inhibits VEGFR-2, PDGFR and c-KIT signaling pathways as well as BRAF. In the pivotal western study in patients with advanced HCC, sorafenib resulted in a 3 months improved overall survival compared to placebo. This trend was comparable in the pivotal Asian phase 3 study and has also been confirmed in large post-market registries. The main side effects of sorafenib are diarrhea, skin toxicity, fatigue and hypertension. Other systemic treatments are currently not approved but are being investigated in numerous randomized phase 2 and pivotal phase 3 studies either as alternative first line therapy (brivanib or linifanib), as a sorafenib add-on (erlotinib or doxorubicin) or after sorafenib failure (brivanib, everolimus, ramucirumab, tivantinib and others). Moreover, the use of sorafenib as adjuvant treatment after potential curative resection or ablation and the combination of sorafenib or brivanib together with transarterial chemoembolization are currently being investigated in randomized clinical trials.     

Growth factors as therapeutic targets in HCC

Despite various effective local treatments for hepatocellular carcinoma (HCC), some patients do not meet the treatment criteria because of extrahepatic metastases or macroscopic vascular invasion at the time of their diagnosis. Furthermore, many patients treated with successful local treatments develop recurrences after treatment. Although these patients receive systemic treatment including chemotherapy, HCC is generally recognized as a chemo-resistant tumor. Recently, new molecular targets have been confirmed and various targeted agents are now being investigated for the treatment of HCC. Epidermal growth factor receptor (EGFR) is frequently expressed in human hepatoma cells, and EGF may be one of the mitogens that are needed for the growth of hepatoma cells. HCC is generally hypervascular, and vascular endothelial growth factor (VEGF) promotes HCC development and metastasis. Various inhibitors targeting EGFR and/or VEGF, VEGF receptor (VEGFR) have been developed as treatments of HCC. In phase-II studies of these growth factor inhibitors, the response rates are relatively low; however, high rates of disease control, enabling a good time to progression, have been achieved. Recently, a randomized phase III trial of sorafenib versus placebo conducted in patients with advanced HCC demonstrated the beneficial effects of this drug on the time-to-progression and overall survival of the patients, and the drug could become established as the standard chemotherapeutic agent for advanced HCC. Further clinical trials using biologic agents are warranted to prolong the survival in HCC patients.     

Antiangiogenic therapy promoted metastasis of hepatocellular carcinoma by suppressing host-derived interleukin-12b in mouse models

Antiangiogenic therapy, specially sorafenib, has become the standard of care for patients with advanced hepatocellular carcinoma (HCC), however, the improvement in survival time is not satisfactory. Previous studies have found that, in some circumstances, antiangiogenic therapy promoted tumor metastasis and the mechanistic studies were mainly focus on cancer-cell-autonomous manners. In two experimental metastasis models with tail-vein injection with hepatoma cells and an orthotopic HCC mouse model, we found that pretreatment with two vascular endothelial growth factor receptor (VEGFR) inhibitors, sunitinib and sorafenib, facilitated tumor cell survival in blood stream and promoted lung metastasis from tumors that were subsequently incubated after drug discontinuation, indicating that host response joined into the pro-metastatic effects. An antibody microarray identified that interleukin (IL)-12b was decreased in the peripheral blood of the mice treated with the two VEGFR inhibitors. IL-12b suppression in macrophages and dendritic cells from host organs was found to play a crucial role in treatment-induced metastasis. Supplement with recombinant mouse IL-12b or restoration of IL-12b expression in the host by zoledronic acid, which was previously reported to enhance IL-12 expression in vitro and in vivo, alleviated the metastasis-promoting effects of sunitinib and sorafenib. These studies suggest that host response to VEGFR inhibitors facilitates HCC metastasis and restoration of IL-12b expression could translate into clinical benefits.     

Effect of sorafenib on murine liver regeneration

Hepatocellular carcinoma (HCC) is a common cause of cancer-related death. Sorafenib prolongs survival of patients with advanced disease and is approved for the systemic treatment of unresectable HCC. It possesses antiangiogenic and antiproliferative properties by way of inhibition of the receptor tyrosine kinases vascular endothelial growth factor receptor 2 (VEGFR-2) and platelet-derived growth factor receptor-beta 1/2 (PDGFR-β) and the kinase RAF. Sorafenib represents a candidate compound for adjuvant therapy in HCC patients. The aim of our study was to investigate whether sorafenib affects liver regeneration. C57BL6 mice received sorafenib orally at 30 mg/kg/day or its vehicle either for 14 days until the day before hepatectomy or starting the day after surgery or both. Animals were sacrificed 24, 72, and 120 hours after hepatectomy. Liver regeneration was calculated as a percent of initial liver weight. Bromodeoxyuridine (BrdU) incorporation and phospho-extracellular signal-regulated kinase (pERK1/2) were determined by immunohistochemistry on liver sections. VEGF-A, PDGF-BB, and hepatocyte growth factor (HGF) levels were measured in liver tissue homogenates. Histological analysis of scar tissue was performed. Treatment stopped 1 day before surgery had no impact on liver regeneration. Continuous sorafenib treatment and treatment started 1 day after surgery had statistically significant effects on liver regeneration at 120 hours compared to vehicle-treated control animals (72% ± 12 versus control 88% ± 15 and 70% ± 13 versus control 86% ± 5 at 120 hours, both P ≤ 0.02). BrdU incorporation showed decreased numbers of positive nuclei in both groups receiving sorafenib after surgery. Phospho-ERK levels were reduced in sorafenib-treated animals. An increase of VEGF-A levels was observed in mice receiving sorafenib. Wound-healing complications were observed in animals receiving sorafenib after surgery and confirmed on histological sections. CONCLUSION: This preclinical study shows that sorafenib did not impact on liver regeneration when ceased before surgery; however, administration after hepatectomy affected late liver regeneration.     

The impact of patient and tumour baseline characteristics on the overall survival of patients with advanced hepatocellular carcinoma treated with sorafenib

BackgroundImpact of patient and tumour baseline characteristics on the overall survival is not well characterized in patients with advanced hepatocellular carcinoma (HCC) treated with sorafenib.Aims/methodsUnivariate/multivariate analyses were conducted to identify retrospectively the impact of baseline characteristics on the survival of 110 patients with advanced HCC treated with sorafenib.ResultsMedian survival of the whole cohort was 6.7 months, median survival in Child-Pugh A, B, C patients was 10.5, 6.1 and 3.0 months and median survival of patients with Barcelona Clinic Liver Cancer (BCLC) stage C/D was 6.8/2.6 months. Presence of ascites, presence of macrovascular invasion and BCLC stage D (mainly determined by Child-Pugh C status and Eastern Cooperative Oncology Group Performance Status > 2) remained independent prognostic factors for the survival on multivariate analysis. Particularly, the presence of macrovascular invasion significantly influenced survival both in patients with liver cirrhosis Child-Pugh A and Child-Pugh B.ConclusionWell maintained liver function and performance status are prerequisites for sorafenib treatment in patients with advanced HCC. Our findings do not support routine clinical use of sorafenib in Child-Pugh B patients. Evaluation of ascites and particularly macrovascular invasion might help to identify patients more likely to benefit from sorafenib treatment.     

Expanding TACTICS trial into a different setting in hepatocellular carcinoma

Systemic treatment for hepatocellular carcinoma (HCC) is recommended for patients with advanced stage and for those who progressed on locoregional modalities. The first agent approved for advanced HCC was sorafenib, and it remains one of the cornerstones of systemic treatment. In the past years, immunotherapy has shown promising results and has been incorporated into the treatment armamentarium. The rates of recurrence and progression after locoregional therapies are significant, what highlights the need to explore systemic agents for preventing or delaying these negative outcomes. Recently, sorafenib was shown to benefit patients with unresectable HCC under transarterial chemoembolization (TACE) by delaying tumor progression and prolonging time to vascular invasion and extrahepatic spread. Although this result was reported in patients with intermediate stage, it provides background to test the strategy of combining systemic treatment plus TACE as a bridge therapy to HCC patients awaiting liver transplantation, for which the risk of dropout due to tumor progression impairs the possibility of cure.     

Hepatozelluläres Karzinom

Hepatocellular carcinoma (HCC) constitutes one of the most frequent cancers worldwide and in 80-90% develops as a consequence of liver cirrhosis. The prognosis of patients with HCC is not only dependent on the tumor stage, but also on the liver function. Patients with early HCC without extrahepatic metastasis can be successfully treated by liver transplantation, tumor resection or percutaneous tumor ablation (e.g. ethanol injection or radiofrequency ablation). Meta-analyses have shown that transarterial chemoembolization (TACE) appears to be an effective treatment for more advanced tumors, at least for a subgroup of patients with good liver function. However, in approximately 50% of HCC patients these treatment options are not applicable or not effective, because they suffer from advanced tumors and/or impaired liver function. Recently a randomized placebo controlled phase III study showed that the multikinase inhibitor sorafenib significantly improves survival of patients with advanced HCC and good liver function (child A). As a consequence of this study sorafenib is now available for effective systemic treatment of patients with advanced HCC.     

Role of sorafenib in the treatment of advanced hepatocellular carcinoma: An update

Sorafenib is the first and only p.o. administrated drug currently approved to treat advanced hepatocellular carcinoma (HCC). However, concerns have been raised about sorafenib therapy, including acquired drug resistance. This review provides an overview of sorafenib in the treatment of HCC on the basis of data obtained in the laboratory and in clinical studies. Three underlying mechanisms have been found to support sorafenib therapy. First, sorafenib blocks HCC cell proliferation by inhibiting BRaf and Raf1/c‐Raf serine/threonine kinase phosphorylation in the mitogen‐activated protein kinase pathway. Second, sorafenib induces apoptosis by reducing elF4E phosphorylation and downregulating Mcl‐1 levels in tumor cells. Third, sorafenib prevents tumor‐associated angiogenesis by inactivating vascular endothelial growth factor receptors (VEGFR‐2 and ‐3) and the platelet‐derived growth factor receptor‐β. Clinical trials have demonstrated the effectiveness and relative safety of sorafenib, and thus the drug is used in unresectable HCC. However, many patients may develop acquired resistance to sorafenib, so their response to sorafenib is eventually lost. Sorafenib may induce autophagy, which leads to apoptosis. However, autophagy can also cause drug resistance. Many studies have combined sorafenib with other treatments in an effort to increase its effects, reduce the necessary dose or overcome resistance. It is urgent to study the mechanisms underlying how sorafenib interacts with cellular molecules and other drugs to increase its efficacy and reduce resistance in HCC patients.     

Field-practice study of sorafenib therapy for hepatocellular carcinoma: a prospective multicenter study in Italy

A multicenter randomized controlled trial established sorafenib as a standard of care for patients with advanced hepatocellular carcinoma (HCC). Because the study was prematurely interrupted due to survival benefits in the sorafenib arm, we conducted an observational study to adequately assess risks and benefits of this regimen in field practice. Starting in 2008, all clinically compensated patients with advanced HCC and those with an intermediate HCC who were unfit or failed to respond to ablative therapies were consecutively evaluated in six liver centers in Italy, for tolerability as well as radiologic and survival response to 800-mg/d sorafenib therapy. Treatment was down-dosed or interrupted according to drug label. Two hundred ninety-six patients (88% Child-Pugh A, 75% Barcelona Clinic Liver Cancer [BCLC]-C, and 25% BCLC-B) received sorafenib for 3.8 months (95% CI 3.3-4.4). Two hundred sixty-nine (91%) patients experienced at least one adverse event (AE), whereas 161 (54%) had to reduce dosing. Treatment was interrupted in 103 (44%) for disease progression, in 95 (40%) for an AE, and in 38 (16%) for liver deterioration. The median survival was 10.5 months in the overall cohort, 8.4 months in BCLC-C versus 20.6 months in BCLC-B patients (P < 0.0001), and 21.6 months in the 77 patients treated for >70% of the time with a half dose versus 9.6 months in the 219 patients treated for >70% of the time with a full dose. At month 2 of treatment, the overall radiologic response was 8%. Eastern Cooperative Oncology Group performance status, macrovascular invasion, extrahepatic spread of the tumor, radiologic response at month 2, and sorafenib dosing were independent predictors of shortened survival. Conclusion: Overall, safety, effectiveness, and generalizability of sorafenib therapy in HCC was validated in field practice. The effectiveness of half-dosed sorafenib may have implications for tailored therapy.     

索拉菲尼在肝癌治疗中的不良反应

索拉菲尼可以显著改善晚期肝癌患者的预后,它主要通过拮抗血管内皮生长因子受体和血小板衍生生长因子受体抗血管源性靶点及通过抑制Raf/MEK/ERK信号传导通路直接抑制肿瘤生长而发挥抗肿瘤作用。然而,频发的索拉菲尼相关的不良反应将影响患者的生活质量。文中简述了小分子靶向药物索拉菲尼治疗肝癌的药理机制,归纳总结了索拉菲尼相关常见不良反应的发生率、特点、预防和治疗措施,并指出索拉菲尼相关的不良反应和抗肿瘤疗效相关,认为临床医生应该充分权衡索拉菲尼在治疗肝癌患者中不良反应的利与弊。     

Sorafenib in the treatment of hepatocellular carcinoma: a multi-centre real-world study

Objective: Sorafenib is an oral multikinase inhibitor that improves survival in advanced hepatocellular carcinoma (HCC). In the absence of alternative therapies, sorafenib is often continued despite advancing liver disease or tumour progression. Real world studies are important to better characterise outcomes in these populations. Our aim was to review patterns of sorafenib use across eight Australian tertiary hospitals, defining variables associated with clinical outcomes. Material and methods: Retrospective cohort study of medical records of 320 patients treated with sorafenib for HCC. Baseline clinical parameters, dosage, adverse effects, and survival from initiation of treatment were collected. Time to radiological progression and 3-month alpha-fetoprotein (AFP) levels were available for a subset of patients. Results: Adverse effects occurred in 79% of patients, requiring dose reduction in 31% of patients. Multivariate analysis identified an increased rate of mortality with Child-Pugh C (HR 5.52, p?=?0.012), ECOG performance status 2–3 (HR 2.84, p?=?0.001), and extrahepatic metastases (HR 1.54, p?=?0.04), and decreased rate of mortality with an AFP reduction of at least 20% at 3 months (HR 0.38, p?=?0.001). An increased rate of radiological progression was associated with ECOG performance status 2–3 (HR 2.34, p?=?0.041), whilst a decreased rate of radiological progression was associated with development of on-treatment diarrhoea (HR 0.55, p?=?0.015). Conclusions: Survival in patients with Child-Pugh C liver function or advanced functional impairment treated with sorafenib is poor and thus routine use of this agent in these patients does not appear justified, particularly given the high rate of adverse effects. AFP concentration on therapy may help identify favourable response to treatment.     

Survival of patients with advanced hepatocellular carcinoma: sorafenib versus other treatments

Background and Aim: Although sorafenib is recommended for patients with advanced hepatocellular carcinoma (HCC), a substantial portion of HCC patients in Asia are still treated with other treatments, mainly due to the prohibitive cost of sorafenib. We aimed to evaluate the clinical outcome of patients treated with sorafenib and those treated with other modalities in a single‐center cohort. Methods: We reviewed the medical records of two groups of consecutive patients with advanced HCC, according to applied treatment modalities, between January 2007 and September 2009 as follows: patients who received sorafenib for 6 weeks or more (n = 123) and patients who were treated with one or more of other treatments, including transarterial chemoembolization, radiation, and cytotoxic chemotherapy (n = 253). Results: Overall survival did not differ significantly between these two groups (8.4 vs 8.2 months; P = 0.601). Significant prognostic factors were high α‐fetoprotein (≥ 200 ng/mL), massive/infiltrative intrahepatic tumors, macrovascular invasion, extrahepatic spread, and higher tumor‐node‐metastasis stage. Subgroup analysis, according to these factors, showed that sorafenib resulted in superior survival in patients with extrahepatic spread (hazard ratio [HR] = 0.539; P = 0.003) and massive/infiltrative tumors (HR = 0.680; P = 0.036). In the absence of each prognostic factor, other treatments were better than sorafenib. Conclusions: Considering the survival benefit for sorafenib over other treatments in patients with extrahepatic spread and massive/infiltrative intrahepatic tumors, these characteristics might be regarded as compelling indications for sorafenib.     

Molecular targeted therapies in hepatocellular carcinoma

Hepatocellular carcinoma (HCC) is a complex and heterogeneous tumor with several genomic alterations. There is evidence of aberrant activation of several signaling cascades such as epidermal growth factor receptor (EGFR), Ras/extracellular signal-regulated kinase, phosphoinositol 3-kinase/mammalian target of rapamycin (mTOR), hepatocyte growth factor/mesenchymal-epithelial transition factor, Wnt, Hedgehog, and apoptotic signaling. Recently a multikinase inhibitor, sorafenib, has shown survival benefits in patients with advanced HCC. This advancement represents a breakthrough in the treatment of this complex disease and proves that molecular therapies can be effective in HCC. It is becoming apparent, however, that to overcome the complexity of genomic aberrations in HCC, combination therapies will be critical. Phase II studies have tested drugs blocking EGFR, vascular endothelial growth factor/platelet-derived growth factor receptor, and mTOR signaling. No relevant data has been produced so far in combination therapies. Future research is expected to identify new compounds to block important undruggable pathways, such as Wnt signaling, and to identify new oncogenes as targets for therapies through novel high-throughput technologies. Recent guidelines have established a new frame for the design of clinical trials in HCC. Randomized phase II trials with a time-to-progression endpoint are proposed as pivotal for capturing benefits from novel drugs. Survival remains the main endpoint to measure effectiveness in phase III studies. Patients assigned to the control arm should receive standard-of-care therapy, that is, chemoembolization for patients with intermediate-stage disease and sorafenib for patients with advanced-stage disease. Biomarkers and molecular imaging should be part of the trials, in order to optimize the enrichment of study populations and identify drug responders. Ultimately, a molecular classification of HCC based on genome-wide investigations and identification of patient subclasses according to drug responsiveness will lead to a more personalized medicine.     

Predictors of survival in patients with established cirrhosis and hepatocellular carcinoma treated with sorafenib

AIM:To investigate in greater detail the efficacy and safety of sorafenib for the treatment of hepatocellular carcinoma(HCC)in patients with established cirrhosis.METHODS:From October 2009 to July 2012 patients with an established diagnosis of cirrhosis and HCC treated with sorafenib were consecutively enrolled.According to the Barcelona Clinic Liver Cancer(BCLC)classification,patients were in the advanced stage(BCLC-C)or in the intermediate stage(BCLC-B)but unfit or unresponsive to other therapeutic strategies.Treatment was evaluated performing a 4-phase computed tomography or magnetic resonance imaging scan every 2-3 mo,and analyzed according to the modified Response Evaluation Criteria in Solid Tumors.Sorafenib was administered at 800 mg/d,until radiological progression or occurrence of unacceptable adverse events(AEs).Univariate and multivariate analyses identified predictors of 16-wk clinical benefit and overall survival.RESULTS:Forty-four patients were enrolled,15 had intermediate HCC and 14 a Child-Pugh score of B7.AEs caused treatment interruption in 19 patients(43%),and median treatment duration was shorter in this subset(5 wk vs 19 wk,P<0.001)and in the BCLC-C subgroup(13 wk vs 40 wk,P=0.015).No significant differences in the reason for treatment interruption or in treatment duration were found comparing patients in Child-Pugh class A vs B or in patients older or younger than 70 years.After 16 wk of treatment,18 patients(41%)had stable disease or partial response.Patients with viral infection or BCLC-C were at higher risk of disease progression.ECOG,extrahepatic spread,macrovascular invasion,alpha-fetoprotein or alkaline phosphatase levels at admission were independent predictors of overall survival.CONCLUSION:In patients with cirrhosis and HCC treated with sorafenib,AEs are a common cause of early treatment withdrawal.Vascular invasion and extrahepatic spread condition early response to treatment and survival.Baseline biochemical parameters may be helpful to identify patients at higher risk of shorter overall survival.     

肝细胞癌组织细胞因子信号转导抑制因子-1表达的研究

目的探讨细胞因子信号转导抑制因子(SOCS1)、血管内皮生长因子受体(VEGFR)-2和表皮生长因子受体(EGFR)在肝硬化、肝细胞癌组织中的表达变化。方法采用免疫组化法检测63例HCC组织、51例癌周肝组织、11例肝硬化组织及11例正常肝组织SOCS1蛋白的表达;另分别检测VEGFR2和EGFR在27例和41例HCC组织中的表达情况。结果癌周肝组织中SOCS1蛋白表达为阴性1例,弱阳性15例,阳性30例,强阳性5例,HCC组织中SOCS1蛋白表达为阴性11例,弱阳性38例,阳性14例,癌周肝组织中SOCS1蛋白表达强度显著高于HCC组织(P0.01);SOCS1蛋白在肝硬化组织和正常肝组织中无表达;SOCS1表达在瘤体大小间(瘤体5cm和≥5cm)有显著性差异(P0.001);SOCS1蛋白在HCC组织中的表达与VEGFR2和EGFR的表达无显著相关性(P0.05)。结论 SOCS1蛋白表达与HCC的发生发展密切相关。     

Das hepatozellul?re Karzinom aus der Sicht des Internisten und des Chirurgen

Hepatocellular carcinoma (HCC) is the 5th most common cancer in the world and the 3rd cause of cancer-related death. Despite therapeutic advances, the overall survival of patients with HCC has not significantly improved in the last decades. Because in the majority of patients HCCs develop in a cirrhotic liver, the patient’s prognosis depends not only on the tumor stage but also on the liver function. Patients at an early stage with an asymptomatic single HCC with a maximum diameter of 5 cm or up to three nodules each less than 3 cm may benefit from curative therapies, including resection, liver transplantation, and percutaneous ablation. Patients exceeding these limits, but who are free of cancer-related symptoms and vascular invasion or extrahepatic spread, may benefit from palliation with chemoembolization. The advanced stage is characterized by mild cancer-related symptoms and/or vascular invasion or extrahepatic spread. Patients at this stage are eligible for treatment with sorafenib; however, a variety of other new drugs, including small molecules and antibodies, are being tested in randomized controlled trials. The development and evaluation of novel HCC treatment strategies as well as the implementation of existing measures and the development of new ones to prevent HCCs are of utmost importance. A better understanding of the clinical and molecular pathogenesis of HCCs should lead to improved diagnostic, therapeutic, and preventive strategies, with the aim to reduce the incidence of HCC, one of the most devastating malignancies worldwide.