HEPATOCELLULAR CARCINOMA: AN OVERVIEW · HEPATOCELLULAR CARCINOMA: AN OVERVIEW John K. Olynyk ....
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HEPATOCELLULAR CARCINOMA: AN OVERVIEW
John K. Olynyk
Head, Department of Gastroenterology & Hepatology Fiona Stanley Fremantle Hospital Group
Dean of Research, Edith Cowan University
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RISING MORTALITY OF LIVER DISEASE
Williams et al. (2014) The Lancet
Death rates have decreased for almost all diseases
Exception: Liver disease (increased by 400% since 1970)
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Ryerson et al. Cancer 2016;122:1312
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CURRENT STATUS
5th most common cancer 2nd most common cause of cancer
death Accounts for 7% of all global cancers
85% of all HCC occurs in SEA and African populations
Peak incidence at age 70 years
European Association for the Study of the Liver. EASL Clinical Practice Guidelines: Management of hepatocellular carcinoma. J Hepatol (2018), https:// doi.org/10.1016/j.jhep.2018.03.019
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RISK FACTORS FOR HCC
SEER database study of 6,991 HCC cases compared with 255,000 controls HCV OR 40 HBV OR 11 Alcohol OR 4.1 Diabetes/Obesity OR 2.5 Treatment of the above reduces the risk of
HCC Welzel et al Am J Gastroenterol 2013
European Association for the Study of the Liver. EASL Clinical Practice Guidelines: Management of hepatocellular carcinoma. J Hepatol (2018), https:// doi.org/10.1016/j.jhep.2018.03.019
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PREDICTORS OF HCC
Prevalence + risk Population attributable fraction of
known risk factors is 65% Diabetes/Obesity 37% Alcohol 28% HCV 22% HBV 6%
Welzel et al Am J Gastroenterol 2013
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Mortality from cancer in obese US men. Inflammation and hyperinsulinemia increase risk of HCC independent of obesity
El-Diery, W. et al. Gastroenterology 2007;132:2557-2576; Aleksandrova et al Hepatology 2014
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NAFLD IN ADULTS WA DATA
Estimate 28% of adult males and 23% of adult females have US detected NAFLD
McKinnon et al Clin Gastroenterol Hepatol 2014; Ayonrinde et al Hepatology 2011
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Ayonrinde et al J Gastroenterol Hepatol 2015
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1-9 % per year
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Majority of noncirrhotic HCC in NAFLD do not have significant fibrosis (F2 or less)
Mainly have steatosis and inflammation
Mittal et al Clin Gastroenterol Hepatol 2016; Baffy et al J Hepatol 2012
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4-5 cm
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Liver regeneration during acute and chronic injury
ACUTE INJURY
CHRONIC INJURY
healthy liver
Liver progenitor cell (LPC)
Hepatocyte
Cholangiocyte
Tumorigenic LPC
H
H
H H
H&E
chronically injured liver
H&E
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Control Mild Mod Severe Mild Mod Severe Mild Mod Severe 0
25
50
75
100
125
150
175
Hepatitis C Hereditary Hemochromatosis
Alcoholic Liver Disease
** **
**
*
*
0 + 0 12 + 2 74 + 11 124 + 16 31 + 3 80 + 9 133 + 25 21 + 5 102 + 8 114 + 16
LPC
Cou
nt (n
)
Lowes et al Am J Pathol 1999
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WHAT IS IMPORTANT FOR CLINICIANS?
Main risk = cirrhosis (advanced fibrosis) How to diagnose cirrhosis
Clinical – advanced liver disease Biochemical – blood tests (e.g. hepascore,
low platelets, AST/ALT ratio, low albumin, prolonged PT or INR)
Imaging – FibroScan/elastography, US/CT/MR (limitations)
Biopsy
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HCC - WHY DIAGNOSE EARLY?
Symptomatic HCC – 0-10% 5 year survival
Epidemiological data supporting screening 37% reduction in mortality in Chinese
study of 19,000 subjects randomised to screening vs no screening
Screen detected HCC often smaller and more likely to be treatable
Zhang et al J Cancer Res Clin Oncol 2004
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SCREENING FOR HCC
US National Cancer Institute Based on fair evidence, screening of persons at
elevated risk does not result in a decrease in mortality from hepatocellular cancer
http://www.cancer.gov/cancertopics/pdq/screening/hepatocellular/HealthProfessional/page1
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SURVEILLANCE (LEVEL III)
Non Hep B All the other liver
diseases
6 monthly US + AFP
Bruix and Sherman Hepatology 2011
European Association for the Study of the Liver. EASL Clinical Practice Guidelines: Management of hepatocellular carcinoma. J Hepatol (2018), https:// doi.org/10.1016/j.jhep.2018.03.019
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WHICH TESTS?
AFP Raised or rising Low sensitivity 39-97% (66%) Low PPV 9-36%
Mass on imaging US 4 phase multi-detector CT Contrast enhanced MR (primovist)
Bruix and Sherman Hepatology 2011; http://www.cancer.gov/cancertopics/pdq/screening/hepatocellular/HealthProfessional/page1
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European Association for the Study of the Liver. EASL Clinical Practice Guidelines: Management of hepatocellular carcinoma. J Hepatol (2018), https:// doi.org/10.1016/j.jhep.2018.03.019
DIAGNOSIS
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STAGING & TREATMENT
European Association for the Study of the Liver. EASL Clinical Practice Guidelines: Management of hepatocellular carcinoma. J Hepatol (2018), https:// doi.org/10.1016/j.jhep.2018.03.019
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SUMMARY
HCC is becoming the commonest cause of death in end stage liver disease
High index of suspicion for early detection and diagnosis Need to know which patients are cirrhotic ?? NAFLD – when to assess ??
Any time a cirrhotic deteriorates - ? Is HCC present
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PREVENTION OF HCC
European Association for the Study of the Liver. EASL Clinical Practice Guidelines: Management of hepatocellular carcinoma. J Hepatol (2018), https:// doi.org/10.1016/j.jhep.2018.03.019
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PREVENTION OF HCC? THE FUTURE
100 mg day in cirrhotic HBV subjects RR 0.44 compared with no antiplatelet No increased risk of bleeding
Lee et al Hepatology 2017
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QUESTIONS?