Early stage HCC management BCLC Staging and Treatment Schedule HCC Stage 0 PST 0, Child-Pugh A Stage A-C PST 0-2, Child-Pugh A-B Very early stage (O) Single < 2 cm Carcinoma in situ Early stage (A) Single or 3 nodules < 3 cm, PS 0 Portal pressure/bilirubin Resection Increased No Liver Transplantation (CLT/LDLT) Curative Treatments (30%) 5-yr survival: 50-70% ttc: treatment Advanced stage (C) Portal invasion, N1, M1, PS 1-2 Terminal stage (D) 3 modules 3 cm Single Normal Intermediate stage (B) Multinodular, Ps 0 Stage D PST>2, Child-Pugh C Associated diseases Yes PEI/RF Chemoembolization Sorafenib Randomized controlled trials (50%) 3 yr survival: 20-40% Symptomatic ttc (20%) 1 yr survival: 10-20% Adapted from Llovet JM et al. J Natl Cancer Inst 2008;100: 698 – 711 Levels of evidence in the assessment of benefits in HCC treatment Treatments assessed Benefit Evidence Increased survival Uncertain Increased survival Treatment response 3iiA 1iiA 3iiA 2iiDiii Increased survival 3iiA Better local control Increased survival Treatment response Treatment response 1iiD 1iiA 3iiDiii 3iiDiii Increased survival No benefit No benefit No benefit 1iA 1iA 1iiA 1iiA Surgical treatments Surgical resection Adjuvant therapies Liver transplantation Neoadjuvant therapies Locoregional treatments Percutaneous ablation Ethanol injection Radiofrequency ablation Chemoembolization Arterial chemotherapy Internal radiation (I131, Y90) Systemic treatments Sorafenib Tamoxifen Systemic chemotherapy Interferon Classification of evidence adapted from the National Cancer Institute (from Llovet JM, et al. J Natl Cancer Inst 2008;100:698-711) Level 1 = Randomized, controlled trial, meta-analysis (double-blinded, 1i; non-blinded, 1ii) Level 2 = Non-randomized controlled trial Level 3 = Case series (population-based, 3i; non-population-based, consecutive; 3ii; non-population-based, non-consecutive, 3iii) Endpoints: A = Survival, B = Cause-specific mortality, C = quality of life, D = indirect surrogates (DFS, PFS, tumor response) Llovet JM et al J Natl Cancer Inst 2008;100: 698 – 711 Surgical resection Surgical Resection Optimal candidates: BCLC stage 0 or A – – – – Child-Pugh A Performance status 0 Single tumors (< 3 cm) Normal portal pressure 5-year survival 60-70% – Normal bilirubin Excellent functional reserve High recurrence rate 50% at 3 years 70% at 5 years Bruix J et al. J Hepatol 2001; 35: 421-430; Llovet JM. J Gastroenterol 2005; 40: 225-235 Resection in Child A Patients offers good survival 70% Poon RT et al. Ann Surg 2002; 235(3): 373-82. Risk Factors Contributing to HCC Early Phase Intrahepatic Recurrence after Hepatectomy Factors contributing to early phase (<2 years) recurrence Hazard ratio 95% CI Microscopic vascular invasion 2.36 1.62 – 3.45 Serum AFP value ≥ 32 ng/ml 1.83 1.25 – 2.68 Non anatomical resection 1.65 1.13 – 2.40 Imamura H et al. J Hepatol 2003; 38: 200-207 Is resection only a palliation? 186 patients with HCC 2 cm treated with curative hepatectomy Early HCC Small advanced HCC The survival rate of patients with early HCC undergoing Liver Resection decreases 5 years after surgery. This phenomenon is explained by occurrence of second primary HCCs that should be prevented Yamamoto M et al. Ann Surg. 2004; 239(3): 395-9 Liver transplantation Liver Transplantation Advantage Removal of the diseased liver together with the tumor Disadvantage Long waiting lists Optimal candidates: • BCLC Stage A disease • No vascular invasion • No metastases • Fulfill the Milan criteria – Solitary tumor < 5 cm or – ≤ 3 nodules < 3 cm Illustration Copyright © 2007 Nucleus Medical Art, All rights reserved. www.nucleusinc.com. 5-year survival 70% Recurrence rate < 15% Bruix J, Sherman M. Hepatology 2005; 42: 1208-1236; Llovet JM. J Gastroenterol 2005; 40: 225-235; Mazzaferro V et al. N Engl J Med 1996; 334: 693-699 MILAN Criteria • Unresectable HCC single nodule <5cm or <3nodules <3cm • No vascular invasion or node mets Mazzaferro V et al. N Engl J Med. 1996; 334(11): 693-9 Liver Transplantation Survival of patients with single HCC < 5 cm or 3 < 3 cm (n= 48) Overall Survival % 100 75% 80 60 40 20 0 0 12 24 36 48 months Mazzaferro V et al. N Engl J Med. 1996; 334(11): 693-9 Liver Transplantation …The 5-year survival of liver transplantation for HCC has improved with time (1987-2001). It is possible that the published criteria for patient selection may have contributed to the better outcome. Yoo HY et al. J Clin Oncol. 2003; 21(23): 4329-35 Non surgical treatments Non Surgical Treatments: Percutaneous Ablation Radiofrequency ablation (RFA) Percutaneous ethanol injection (PEI) Optimal candidates: Child-Pugh A Single tumors < 3 cm in diameter Illustration Copyright © 2007 Nucleus Medical Art, All rights reserved. www.nucleusinc.com. Llovet JM. J Gastroenterol. 2005; 40(3): 225-35; Bruix J et al. Hepatology 2005; 42(5): 1208-36; Bruix J et al. J Hepatol. 2001; 35(3): 421-30 Non Surgical Treatments: Percutaneous Ablation Radiofrequency ablation (RFA) Percutaneous ethanol injection (PEI) Optimal candidates: Child-Pugh A PEI 5-year survival 40-50% High recurrence rate 50% at 3 years 70% at 5 years Single tumors < 3 cm in diameter Llovet JM. J Gastroenterol. 2005; 40(3): 225-35; Bruix J et al. Hepatology 2005; 42(5): 1208-36; Bruix J et al. J Hepatol. 2001; 35(3): 421-30 Recurrence rates Recurrence of HCC after curative treatment HCC stage Early stage (A) 1–3 nodules <3 cm, PS 0 Very early stage (0) Single <2 cm carcinoma in situ 3 nodules ≤3 cm Single Portal pressure/bilirubin Associated diseases Increased No Normal Potentially curative treatment Resection Liver transplantation Yes PEI/RFA 5-year recurrence >70% Possible causes contributing to recurrence <15% >70% Proliferation of residual microscopic disease Neovascularization Mazzaferro V et al. N Engl J Med 1996;334:693–9; Zavaglia C et al. Am J Gastroenterol 2005;100:2708–16; Cherqui D et al. Ann Surg 2009;250:738–46; Imamura H et al. J Hepatol 2003;38:200–07; Forner A & Bruix J. Hepatology 2008;44:5–7; Qin LX & Tang ZY. Curr Cancer Ther Rev 2005;1:71–80; Poon R et al. J Clin Oncol 2002;20:1775–85 Magnitude of the problem: the unmet need of prevention of recurrence Llovet et al, 1999 100 Poon et al, 2002 Probability (%) 80 After resection 60 40 20 0 0 12 24 32 Months 48 60 72 Months Lencioni et al, 2005 Shiina et al, 2005 After ablation Llovet J et al. Hepatology 1999;29:62–7; Poon R et al. Ann Surg 2002;235:373–82; Lencioni R et al. Radiology 2005;234:961–7; Shiina S et al. Gastroenterology 2005; 129:122–30 Patterns of HCC recurrence Predictors of EARLY recurrence Predictors of LATE recurrence • Microscopic vascular invasion • Grade of hepatitis activity • Serum AFP value ≥32 ng/mL • Aetiology of hepatitis • Non-anatomical resection • Age Imamura H et al. J Hepatol 2003;38: 200–07; Mazzaferro V et al. Hepatology 2006;44:1543–54; Cucchetti A et al. Ann Surg Oncol 2009;16:413–22 Haematogenous dissemination of tumour cells after resection of HCC Patients who developed recurrence Patients who did not develop recurrence AFP-expressing tumour cells are disseminated mostly post-operatively This may potentially be the source of recurrence or metastasis Wong GL et al. Clin Cancer Res 1999;5:4021–7 N=100 y = –0.344 + 0.24x r2 = 0.084 P<0.001 40 30 20 10 0 80 Micrometastases in proximal area 70 Micrometastases in distal area 60 50 40 30 20 3.50 3.25 3.00 2.75 2.50 2.25 Size of main tumour (mm) 60 2.00 50 1.75 40 1.50 30 1.25 20 1.00 10 0.75 0 0 0.50 –10 0.25 10 0.00 Distance of microsatellite (mm) 50 Number of micrometastases (n) Micrometastases/microsatellites could spread via invasion of portal vein branches at an early stage Distance of spread (cm) Micrometastases could spread via invasion of portal vein branches at an early stage even when the tumour is solitary and small Sasaki A et al. Cancer 2005;103:299–306; Shi M et al. World J Surg 2004;28:376–81 Late recurrence of HCC after surgery (Resected patients) LOW RISK <2 risk factors HIGH RISK ≥2 risk factors (HCC occurrence) Risk factors for and incidence of late recurrence after surgery overlap with those associated with HCC first occurrence in cirrhosis Cucchetti A et al. Ann Surg Oncol 2009;16:413–22 Prognostic factors associated with risk of recurrence Grade of differentation Nuclear grade 1 Strong predictors of HCC recurrence after curative resection: Microvascular invasion • Microvascular invasion • Grade of differentiation • Microsatellites Microsatellites Nuclear grade 2 Nuclear grade 3 Lauwers GY et al (The International Cooperative Study Group on Hepatocellular Carcinoma). Am J Surg Pathol 2002;26:25–34; Bruix J & Sherman M. Hepatology 2005;42:1208–36 Morphology: pathology correlation The metroticket experience: 1556 HCCs studied with explant pathology 1083 pts 17% Incidence of mVI and G3 tumours are parallel and increase significantly with size-and-number features of HCC Mazzaferro V et al. Lancet Oncol 2009;10:35–43 Microvascular invasion and outcome The degree of mVI predicts outcome after resection and could be useful to select patients for salvage transplant or to enrol patients in trials evaluating new molecular targeted therapies Immunoreactivity for anti-smooth muscle actin antibody to asses presence of muscle in the wall Roayaie S et al. Gastroenterology 2009;137:850–5 Can mVI invasion be predicted by imaging? Wedge-shaped peritumoural enhancement is triangular enhancement with the base headed way from the tumour Irregular circumferential peritumoural enhancement: (polygonal shape parallel to the tumour border) NMR findings of circumferential peritumoural enhancement showed statistical correlation with microscopic vascular invasion Kim H et al. Eur Radiol 2009;19:1744–51 Integrative transcriptome analysis reveals common molecular subclasses of human HCC • S1 tumours exhibited more vascular invasion and satellite lesion • These results may suggest that the S1 subclass is associated with a more invasive/disseminative phenotype Hoshida Y et al. Cancer Res 2009;69:7385–92 Molecular markers of late recurrence A C Expression pattern of 186 gene-survivalsignature OS according to the level of expression of the 186 genes among 168 pts with longer duration of follow-up B D OS according to the level of expression of the 186 genes among 225 tissue validation samples Probability of late-recurrence according to the expression of the laterecurrence gene signature A reproducible gene signature correlated with survival in liver tissue adjacent to the tumour Hoshida Y et al. N Engl J Med 2008 359:1995–2004 Liver regeneration pathways after resection are partially shared by HCC cell proliferation TGF uPA/plasminogen Pro-HGF HGF Met Stellate cell Hepatocyte P13K AKT S6 kinase TGF Cyclin E AP1 JNK pERK C/EBP IGFBP1 VEGF Endothelial cell P27 Cyclin D TOR? Hepatocyte A Growth factor-dependent LPS C3a C5a ICAM B Cytokine-dependent IL-6 TNF PAI SCF STAT3 Hepatocyte SOCS3 Kupffer cell A: Growth factor-dependent B: Cytokine-dependent • HGF activate hepatocyte regeneration through downstream pathways (PI3K, pERK, AKT) • IL-6 and TNFα are crucial priming stimuli activating STAT 3, MAPK and pERK • VEGF activate proliferation of endothelial cells Taub R et al. Nat Rev Mol Cell Biol 2004;5:836–47 Recurrent HCC after curative treatment: adjuvant strategies Chemotherapy - HCFU - UFT - Epirubicin + cisplatin - Capecitabine ….. Adjuvant immunotherapy - Adoptive immunotherapy - Tumour vaccines - Interferon Vitamin chemoprevention - Vitamin A - Vitamin K ….. Adjuvant systemic strategies Novel agents Chemotherapy No evidence of benefit from adjuvant chemotherapy compared to surgery alone in improving survival rates after curative tumour resection The potential benefits of CT on tumour recurrence should be weighed against the risk of adverse reactions in patients with an underlying liver dysfunction Samuel M et al. Cochrane Database Syst Rev 2009;CD001199 Chemotherapy: RCT using UFT (uracil + tegafur) A. Recurrence-free survival B. Overall survival 100 100 UFT 80 80 Patients (%) Patients (%) Control 60 40 20 60 UFT 40 Control 20 0 0 0 1 Patients at risk UFT 79 53 Control 80 58 2 3 4 5 6 Years 38 43 32 29 20 19 18 13 9 4 7 8 0 1 Patients at risk UFT 79 79 Control 80 80 2 3 4 5 6 7 35 40 19 21 7 8 8 Years 78 79 72 75 54 56 • No evidence to support potential benefit of adjuvant UFT, an oral agent which combines uracil and 5FU prodrug • Such treatment may even worsen OS Hasegawa K et al. Hepatology 2006;44:891–5 Adjuvant immunotherapy: adoptive immunotherapy Autologous lymphocytes activated with recombinant interleukin-2 and antibody to CD3 Immunotherapy Control Recurrence-free (%) 100 80 60 40 20 P=0.008 0 0 1 2 3 4 5 6 7 Time after hepatectomy (years) • Safe, feasible and lowers tumour recurrence • No significant difference in OS Takayama T et al. Lancet 2000;356:802–7 Adjuvant immunotherapy: role of IFN Clavien PA. Ann Surg 2007;245:843–5 IFN may prevent late recurrence after HCC resection in specific subgroups of HCV cirrhosis HCV pure patients Mazzaferro V et al. Hepatology 2006;44:1543–54 Vitamin chemoprevention of recurrence: retinoids Oral polyprenoic acid prevents late recurrence after surgical resection or PEI Muto Y et al. N Engl J Med 1996;334:1561–7; Takai K et al. Intervirology 2005;48:39–45 Recurrent HCC after curative treatment: adjuvant strategies Chemotherapy Adjuvant systemic strategies Adjuvant immunotherapy Vitamin chemoprevention - HCFU - UFT - Epirubicin + cisplatin -Capecitabine ….. - Adoptive immunotherapy - Tumour vaccines - Interferon - Vitamin A - Vitamin K ….. Level II clinical evidence does not support the use of systemic adjuvant therapy, tested for resectable HCC Based on the current evidence, there is no role for the aforementioned adjuvant strategies therapy in the management of HCC