Viral hepatitis and Hepatocellular Carcinoma
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1 Viral hepatitis and Hepatocellular Carcinoma Hashem B. El-Serag, MD, MPH Dan L. Duncan Professor of Medicine Chief, Gastroenterology and Hepatology Houston VA & Baylor College of Medicine Houston, TX
2 Outline Risk of HCC in HCV and HBV infections Risk estimates of HCC Determinants of progression to HCC Current and future trends Clinical Epidemiology Anti-viral Treatment Surveillance Efficacy and Effectiveness
3 HCC: Age Standardized Incidence Rates 2005 (Men and Women)
4 Viral Hepatitis and the Attributable Risk of HCC Primary liver cancer cases HBV HCV Cases Attributable fraction (%) Attributable fraction (%) attributable to HBV or HCV Developed 110, ,000 countries Developing 515, ,000 countries Total 626, ,000 Adapted from Parkin, 2006.
5 The Incidence and 5-Year Survival of HCC in United States El-Serag HB. N Engl J Med 2011
6
7 Ramirez AG, et al PLoS One.
8 HCV Cirrhosis and HCC HCV Cirrhosis and HCC Multiple small foci of HCC
9 Cirrhosis in Background of HCC Majority of HCC occurs in the setting of cirrhosis Nearly all HCV patients have cirrhosis. Lower % with HBV have cirrhosis, especially in Asians. 10 Yang CGH 2011;64
10 Risk Factors and Ethnicity in the US Ethnicity of patients with HCC and serological testing for HBsAg and anti-hcv, in absolute numbers White (n=410) Black (n=95) Asian (n=107) Neither HBsAg Anti-HCV Neither HBsAg Both markers Neither Both markers Both markers Anti-HCV HBsAg Di Bisceglie AM et al. Am J Gastroenterol 2003; 98:2060 Anti-HCV
11 Tracing the Worldwide HCV Epidemic Linear relationships between HCV seroprevalence and HCC annual mortality rates Japan type 1920s~ Agestandardized death rates from HCC per 100,000 men France Italy Hungary Finland Spain Germany USA (white) S.Africa UK Hong Kong USA (black) Europe type 1940s~ USA type 1960s~ HCV prevalence among blood donors - % FSU Tanaka Y et al. Gastroenterology 2006; 130:703
12 HCV to HCC Pyramid HCC 1%-3%/year Cirrhosis Chronic Hepatitis HCV Infection 15% (10%- 30%) 90% (60%- 95%) years Goodgame B, et al., Am J Gastroenterol 2003
13 Risk Factors for HCC in Chronic HCV Older age Duration of HCV infection Male sex Race Alcoholism Obesity Diabetes HBV co-infection HIV co-infection Absence of antiviral treatment, coffee drinking
14 HCV Viral Factors and Risk of HCC HCV Viremia level (HCV RNA) Any level (vs none) High level (vs low): Taiwan study show high HCC risk US studies only as predictor of treatment response HCV Genotype GT Possibly GT 1b Meta analysis (1.78 increase in HCC odds) El-Serag HB. Gastroenterology 2012
15 Determinants of HBV Disease Progression HBeAg-positive Prolonged interval before e- seroconversion Age > 40 Mildly, persistently abnormal ALT Genotype (C > B) HBeAg-negative Persistent viral replication HBV-DNA Abnormal ALT Precore/BCP mutation Male Alcohol Co-infection with HCV, HDV, HIV Yim HJ, et al. Hepatology 2006;43:S173-S181. Lai M, et al. J Hepatol. 2007;47:
16 HCC (%) Hepatitis B: Association between viral load and incidence of HCC HBeAg negative, normal ALT, no liver cirrhosis at entry (n=2,925) Baseline HBV DNA Level (copies/ml) < < <10 4 < % 7.96% Year of follow-up 3.15% 0.89% 0.74% Chen CJ et al. JAMA. 2006;295:65 73 Adapted from Chen CJ et al. JAMA. 2006;295:65 73
17 Occult HBV Infection and HCC risk HBV DNA in serum or liver in persons with serologic recovery from transient HBV infection Systematic review of 16 studies none was population-based most had a small number of cases or controls 11 were from Asia (only 1 was in the United States) Pooled adjusted estimate for only 4 longitudinal studies indicated a modest association (RR: 2.83) No convincing evidence that occult HBV is an independent risk factor for HCC or a cofactor with HCV infection in most regions of the world
18
19 Alcohol and Viral Hepatitis Gastroenterology 2012; 142: e1
20 Tobacco Smoking Positive associations and no associations have been reported in different studies. Meta-analysis of 16 publications that evaluated the epidemiologic interactions between HBV and HCV infection, cigarette smoking more than additive interaction between HBV infection and cigarette smoking more than multiplicative interaction between HCV infection and cigarette smoking Chuang SC, et al. Cancer Epidemiol Biomarkers Prev. 2010;19:
21 HCC Rate (%) Diabetes Is Associated with a Two-fold Increase in Risk of HCC Diabetes Is Associated with a Two-fold Increase in Risk of HCC Diabetes N=173,643 No Diabetes N=650,620 P< Years of Follow up El-Serag HB, et al, Gastroenterology 2004
22 Type of Cancer (Highest BMI Category) Mortality from Cancer in Obese US Men (n=900,053) Prostate (>35) Non-Hodgkin s Lymphoma(>35) All Cancers (>40) All Other Cancers (>30) Kidney (>35) Multiple Myeloma (>35) Gall Bladder (>30) Colon and Rectum (>35) Esophagus (>30) Stomach (>35) Pancreas (>35) Liver (>35) Men * * 2.61* Relative Risk of Death (95% Confidence Interval) Calle, NEJM 2003
23 Statins and HCC (1303 cases, 5212 controls) Statin Use Unadjusted OR Adjusted OR Any 0.46 (0.40,0.52) At least months (0.38,0.50) At least months (0.39,0.52) At least months (0.36,0.51) El-Serag HB, et al Gastroenterology (0.54,0.73) 0.61 (0.521,0.71) 0.65 (0.55,0.76) 0.62 (0.52,0.75)
24 Past and Future (Estimated) US Incidence and Prevalence of HCV Infection Decline among IDUs Overall incidence Overall prevalence Infected 20+ years Armstrong GL, et al. Hepatology. 2000;31:
25 Number of Individuals 1,750,000 Histologic Fibrosis Stage by Year 1,500,000 1,250,000 1,000, , , cirrhosis peak F0 F1 F2 F3 F4 250, Davis GL, et al. Gastroenterology. 2010;138:
26 Cirrhosis and Decompensated Cirrhosis Prevalence of Cirrhosis, Decompensated Cirrhosis, and Hepatocellular Cancer % 18% 16% 14% 12% 10% 8% 6% 4% Cirrhosis Decompensated Cirrhosis HCC % 4% 3% 2% 1% 0% Hepatocellular Cancer (HCC) Kanwal F, et al. Gastroenterology; 2011
27 Coffee and Hepatocellular Carcinoma Coffee and Hepatocellular Carcinoma Epidemiologic studies: coffee consumption is inversely related to serum liver enzyme activity liver cirrhosis HCC For each additional 1 cup of coffee: Case-control studies (0.77, ) Cohort studies (0.75, )
28 Prevention of HCC HBV Vaccination Surveillance for HCC Treatment of viral hepatitis
29 HCC Surveillance: Randomized Trials Cirrhosis (NONE) Hepatitis C infection (NONE) Hepatitis B infection (carriers) China Two trials One showed benefit One did not show benefit
30 Screening for HCC: AASLD Recommendations Surveillance for HCC should be performed with ultrasonography (level II) Screening should occur every 6 months intervals (level II) The surveillance interval does not need to be shortened for patients at higher risk of HCC (level III) Bruix J, et al. Hepatology 2010
31 Cumulative Incidence of HCC (%) HCC Risk is Reduced after Successful Antiviral Therapy for HCV Follow-up (yr) Imai Y, et al, Ann Intern Med 1998 No Response Relapse Sustained Response
32 Sustained Response to Interferon Therapy is Associated with Reduced Clinical Endpoints in Patients with Advanced Fibrosis Non-SVR SVR Veldt, Heathcote, Wedemeyer et al., Ann Inn Med 2007
33 Sustained Response to Interferon Therapy: HCCs still occur Non-SVR SVR H. Wedemeyer : Antiviral Treatment and Incidence of HCC Veldt, Heathcote, Wedemeyer et al., Ann Inn Med 2007
34 HALT-C Data No SVR = No Benefit Variable HR Age 1.05 Black 2.04 Alk Phos 1.01 Smoking 2.11 Varices 2.16 Platelets 0.99 Not readily modifiable with antiviral Tx 51
35 Efficacy of HBV Treatment on HCC Proof of Concept: Cirrhotics Randomized controlled trial comparing lamivudine versus placebo Patients with advanced fibrosis or cirrhosis HBV-DNA (>10 5 copies/ml) or HBeAg+ Study terminated prematurely by DSMB (median Tx=32 mo) Risk of HCC reduced by 51% by lam (p=0.047). % Results unchanged when 5 HCCs detected in the first year were excluded (p=0.052). Liaw, NEJM 2004;1521
36 Prevention of HCC (Antiviral Treatment or Surveillance) Efficacy in Clinical Trials and Research Centers Effectiveness in Community Practice El-Serag HB. et al. Gastroenterology. 2007;132:8-10. Efficacy x Access x Correct Diagnosis x Recommendation x Acceptance x Adherence
37 Efficacy and Effectiveness A Demonstration of the Multiplicative Effect of Factors Example 1: Rx X Efficacy of Rx X 60% Example 2: Rx Y Efficacy of Rx X 80% Example 3: Rx X Modified Efficacy of Rx X 60% Access x 80% Correct diagnosis x 85% Access x 80% Correct diagnosis x 85% Access x 90% Correct diagnosis x 90% Recommend x 85% Acceptance x 85% Adherence x 70% Recommend x 85% Acceptance x 85% Adherence x 70% Recommend x 90% Acceptance x 90% Adherence x 80% Effectiveness of Rx X = 21% Effectiveness of Rx Y = 28% Effectiveness of Rx X modified = 32% El-Serag HB. Gastroenterology. 2007;132:8-10.
38 Survey Reponses Reasons for Lack of Treatment Among Respondents to the NHANES Hepatitis C Follow- Up Questionnaire N = 133 Refused treatment Did not f/u with clinician Received treatment Clinician did not recommend treatment Unaware of diagnosis Abbreviation: NHANES, National Health and Nutrition Evaluation Survey. Volk ML, et al. Hepatology. 2009;50:
39 Overall Effectiveness of HCV Kramer: HCV Treatment and SVR in the VA Treatment in VA 100 with HCV 60 tested for genotype 11 received PEG- INF/ribavirin 6 completed treatment 3 SVR
40 Viral Hepatitis and HCC HCV and HBV -related HCC Modifiable risk factors (alcohol, obesity, diabetes) for individual management Non modifiable risk factors (age, duration, sex) are shaping the current HCC trends Likely to increase in the near future Prevention: HBV vaccination Antiviral treatment HCC surveillance Major gaps in effectiveness
41 Meta-analysis: Effect of SVR vs. no SVR on HCC Risk 14 studies (3310 pts with cirrhosis) RR = 0.35 ( , 95% CI) Singal et al. Clin Gastro Hep 2010;8:192-99
The Chronic Liver Disease Foundation (CLDF) and the International Coalition of Hepatology Education Providers (IC-HEP) present:
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