The Short-Term Incidence of Hepatocellular Carcinoma Is Not Increased After Hepatitis C Treatment with Direct-Acting Antivirals: An ERCHIVES Study

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1 The Short-Term Incidence of Hepatocellular Carcinoma Is Not Increased After Hepatitis C Treatment with Direct-Acting Antivirals: An ERCHIVES Study DK Li, YJ Ren, DS Fierer, S Rutledge, OS Shaikh, V Lo Re III, T Simon, A Abou-Samra, RT Chung, AA Butt Massachusetts General Hospital, Boston VA Pittsburgh Healthcare System, Pittsburgh Icahn School of Medicine, Mt Sinai, New York Perelman School of Medicine, University of Pennsylvania, Philadelphia Hamad Medical Corporation, Doha, Qatar Weill Cornell Medical College, Doha, Qatar & New York Accepted for Publication in HEPATOLOGY 2018 HKASLD Bi-monthly Scientific Meeting Journal Review James Y.Y. Fung 18 th Jan 2018

2 Introduction IFN-induced SVR has been shown to reduce HCC risk by about 4-fold, regardless of stage of liver disease The extrapolation of this benefit to DAAs and the expectation of greater reduction has not been consistent Paradoxical increased risk of HCC in patients treated with DAA therapy

3 7/16 had been treated initially with resection and 9/16 with ablation Median time from HCC treatment to DAA was 11.2m (25%-75%: ) Median time from CR to DAA was 1.7 and 1.3 for HCC recurrent patient Median time from CR to recurrence was 3.5 months (1.1-8) Recurrence rate is higher than observed in historical non DAA treated controls Reig et al. J Hepatol 2016;65:

4 Retrospective cohort study 344 cirrhotics without HCC at time of DAAs Treated with DAAs and FU for 24 weeks SVR 91% 59 with HCC history 19 resections 2 resections + RFA 2 resections + TACE 18 RFA 4 RFA + TACE 6 PEI 5 TACE 3 Data not complete Median interval between HCC treatment and DAA 376 days (range, ) 7.6% 26/ % 9/ % 17/59 Conti F et al. J Hepatol 2016;65:

5 The ANRS collaborative study group on HCC. J Hepatol 2016 ANRS C022 HEPATHER Cohort ANRS C012 Cirvir Cohort 13% 21% 31/66 (47%) 1/13 (8%) ANRS C023 CUPILT Cohort No increase risk of recurrence of HCC with DAA-treated patients compared with non-treated patients 2.2%

6 Study Aim Whether DAA treatment is associated with higher rates of incident HCC using a large, well-established national cohort of HCV-infected United States Veterans without a prior diagnosis of HCC

7 Design & Data Source (I) Retrospective cohort study of HCV-infected persons in the Electronically Retrieved Cohort of HCV Infected Veterans (ERCHIVES) database All HCV-infected Veterans at any US-wide Dept of Veteran Affairs medical facilities with anti-hcv+ between 2002 and 2016 were identified Demographic, clinical, lab data were obtained from the National Patient Care Database and the Corporate Data Warehouse

8 Design & Data Source (II) Pharmacy information, including all prescriptions written, doses, duration, number of pills, number of refills, and date of refills, was retrieved from the Pharmacy Benefits Management database. Data merged on established algorithms

9 Inclusion criteria Anti-HCV+ Study Participants Exclusion criteria HBV (HBsAg+) or HIV co-infection Prior to baseline Diagnosis of HCC Missing HCV RNA or FIB-4 score Incomplete data for FIB-4 calculation at least 12 weeks after baseline Missing HCV RNA data for calculation of SVR12

10 Cohort Groups Group A (IFN): Received PEG + RBV for 28 days If multiple courses of PR 1 st treatment course used as baseline Standard IFN excluded Group B (DAA) Received SOF/SMV±RBV; SOF/LED±RBV; SOF/ DCL±RBV; PRoD±RBV for 28 days Other newer DAAs not included (small numbers) Group C No HCV treatment for 28 days

11 Baseline Definitions For treated groups Baseline was the date of HCV treatment initiation For untreated groups Baseline equal to the duration of HCV infection prior to treatment initiation in the corresponding treated person Determining the average time between the first anti- HCV+ date and treatment initiation date for the treated group Adding the same duration to the time between the first anti-hcv+ date in each untreated person and assigning that date as baseline

12 Definition of Cirrhosis FIB-4 score >3.5 FIB-4 = (age[years] x AST [IU/L]/(platelet count [platelets x 10 9 /L] x ALT ½ [IU/L]) Lab data obtained at yearly intervals FIB-4 score recalculated at each interval

13 Study Outcomes Primary outcome Development of incident HCC Defined as presence of at least one inpatient or two outpatient ICD-9/10 codes for HCC made 3 months after baseline Time to development of HCC determined relative from baseline Given that advanced fibrosis is one of the strongest predictors of HCC development, primary analysis was performed on persons with baseline cirrhosis (FIB-4 >3.5)

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15 Patient Characteristics Age (yrs) Sex, % male Race, % White Black Hispanic Others Diabetes, % BMI, median Alcohol, % Smoking, % Current Former Never

16 HCV GT, % ,5,6 Missing Baseline HCVRNA log PPI use during treatment Statin use prior to baseline FIB-4 baseline, % <1.45 no fibrosis >3.5 cirrhosis Median AFP RBV use, % Treatment, % <8 weeks 8 weeks 12 weeks 24 weeks SVR, % Incident HCC, %

17 Incidence Rate of HCC by Treatment Group and SVR Status (Entire Cohort)

18 Incidence Rate of HCC by Treatment Group and SVR Status (Cirrhotics Only) Treatment Group All cirrhotics IFN DAA regimens Untreated controls SVR12 subgroup IFN DAA regimens Non SVR12 subgroup IFN DAA regimens

19 Probability of HCC Development in Cirrhotic Person who achieved SVR

20 Baseline Cohort Characteristics from FIB-4 Sensitivity Analysis (Limiting definition of baseline FIB-4 to within 12 months prior to baseline) Overall 1933 FIB-4 values excluded 209 IFN 82 DAA 1642 untreated

21 Incidence Rate of HCC in Persons with Cirrhosis, by Treatment Group and SVR Status in FIB-4 Sensitivity Analysis

22 Baseline Characteristics of DAA Subgroups

23 Incidence Rate of HCC in Persons with Cirrhosis, by DAA Treatment and SVR Status Treatment Group Cirrhotics IFN SOF/SMV SOF/LED SVR12 subgroup IFN SOF/SMV SOF/LED p=0.07 Non SVR12 subgroup IFN SOF/SMV SOF/LED

24 Predictors for the Development of HCC in Persons with Cirrhosis based on Multivariate, Cox Proportional Hazards Analysis Age, per 10 year increase Male sex Race White (comparator) Black Hispanic Other/Missing Diabetes BMI (per 1 unit increase) Alcohol abuse history Smoking history Non-smoker (comparator) Current smoker Former smoker Missing HCV genotype, % 1 (comparator) 2 3 4,5,6 Missing HCV RNA, per 1 log increase PPI use (baseline onwards) Statin use AFP >20 (vs 20 or below) Treatment regimen Peg/RBV (comparator) Any DAA Attainment of SVR

25 Predictors for the Development of HCC in Cirrhotics Based on Multivariate Cox Proportional Hazards Analysis in FIB-4 Sensitivity Analysis

26 Discussion DAA-treated persons did have a significantly higher HCC rate than IFN-treated persons (overall group) Higher rate of known risk factors Cirrhosis, older age, higher baseline AFP Analyzing cirrhotic patients alone showed no difference in HCC-free survival between DAA and IFN groups Lower HCC incidence in sensitivity analysis Pre-treatment risk of HCC is the main driver of posttreatment risk of HCC

27 Discussion Higher prevalence of underlying HCC risks among DAA patients due to warehousing? Treatment with earliest DAA regimens may be surrogate for higher baseline HCC risk Failed therapy, cirrhotics Persons treated with SIM/SOF had higher rates of cirrhosis (c/w IFN/later DAAs) Previous studies have not provided baseline data in combination with DAA regimens

28 Discussion In contrast to previous studies, DAA treatment is not associated with higher risk of HCC compared to IFN treatment when controlling for differences in baseline HCC risk factors Achievement of SVR with antiviral regimen is the most important determinant of a lower HCC risk

29 Study Limitations Relatively short follow-up time in DAA cohort Potential for limited generalizability Veterans, males, higher smoking & alcohol use Retrospective cohort study Prospective studies unlikely Lack of liver histology for diagnosing cirrhosis Lack of info regarding HCC surveillance practices Excluded those with prior HCC

30 Study Conclusion In cirrhotics with chronic HCV infection, there was no association between HCC incidence rates and DAA treatment compared to IFN Insufficient controlling for baseline risks for HCC and selection bias likely drove previously reported associations between DAA treatment and increased HCC risk

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