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2/10/2017 1 Objectives Discuss the importance of screening for chronic HCV Identify the target population of HCV screening Understand what tests are needed to screen patients and linkage to care Examine the natural progression of chronic HCV infection Discuss long term management strategies
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Page 1: Hepatitis C: Screening, Diagnosis, and Long-Term Management · 2017. 2. 10. · 2/10/2017 2 • 170 Million Carriers Worldwide • Global HCV Prevalence 3.0 % Hepatitis C: A Global

2/10/2017

1

Objectives

• Discuss the importance of screening for chronic HCV

• Identify the target population of HCV screening• Understand what tests are needed to screen

patients and linkage to care• Examine the natural progression of chronic HCV

infection• Discuss long term management strategies

Page 2: Hepatitis C: Screening, Diagnosis, and Long-Term Management · 2017. 2. 10. · 2/10/2017 2 • 170 Million Carriers Worldwide • Global HCV Prevalence 3.0 % Hepatitis C: A Global

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• 170 Million Carriers Worldwide

• Global HCV Prevalence 3.0 %

Hepatitis C: A Global Health Problem

Most Patients with Chronic Hepatitis C in the US Are Not

Aware that They Are Infected

~3,300,000 individuals

are infected with the

hepatitis C virus in

the United States

825,000 (~25%)

AWARE

2,475,000 (~75%)

UNAWARE

Adapted from Colvin HM, Mitchell AE. Hepatitis and liver cancer: A national strategy for

prevention and control

of hepatitis B and C. Washington, DC: The National Academies Press; 2010.

Page 3: Hepatitis C: Screening, Diagnosis, and Long-Term Management · 2017. 2. 10. · 2/10/2017 2 • 170 Million Carriers Worldwide • Global HCV Prevalence 3.0 % Hepatitis C: A Global

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3

Deaths Due to HCV Infections Now ExceedThose Due to HIV Infection

7Ly KN et al. Ann Intern Med. 21 February 2012;156(4):271-278; Mahajan, IDSA 2013

Number of HCV-related

deaths may be over

60,000 because of

under-reporting on death

certificates

• In the United States, the annual number of deaths due to HCV infection are increasing, and have risen above that of HIV infection.

• While these data indicate the increasing mortality burden of chronic HCV infection, deaths due to HCV are frequently underreported; thus the accurate mortality is likely to be higher than is captured by death certificates

To

tal

No

. In

fec

ted

(millio

ns

)

Diagnosed

Undiagnosed

2.7 to 3.9 Million1

75% Unaware of Infection

1.1 Million1

21% Unaware of Infection

~800,000 to 1.4 Million1

65% Unaware of Infection

HIV HBV HCV

4

3

2

1

0

Prevalence of Chronic Viral Infections

HCV is Nearly 4 Times as Prevalent as HIV and HBV

• A 2011 study estimated that as many as 5.2 million persons are living with HCV in the United States2

HBV=hepatitis B virus; HCV=hepatitis C virus; HIV=human immunodeficiency virus. 1. Institute of Medicine. Washington, DC: The National Academies Press; 2010.2. Chak E, et al. Liver Int. 2011;31(8):1090-1101.

1. Ghany MG, et al. Hepatology. 2009;49(4):1335-1374.

HCV Can Now Be Cured in Most Patients

• Unlike HIV and HBV infection, HCV infection is a curable disease

• What does cure mean?• Sustained Viral Response

• Undetectable HCV RNA 12 weeks after completion of antiviral therapy for chronic HCV infection1

• Long term morbidity and mortality benefits

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Therapy for Hepatitis CProjected SVR Rates with Multiple DAAs

6

16

34

4239

55

70

90

0

20

40

60

80

100

IFN6m

IFN12m

IFN + RBV6m

IFN + RBV12m

PEG12m

PEG + RBV12m

PEG + RBV + PI6-12m

Multiple DAAs3m

Su

sta

ine

d V

iro

log

ic R

es

po

ns

e (

%)

Timeline

1986 1998 2001 2002 2011 2014

All-Cause Mortality

International, multicenter, long-term follow-up study from 5 large tertiary care hospitals in Europe and Canada. Patients

with chronic HCV infection started an interferon-based treatment regimen between 1990 and 2003 (n=530).

van der Meer AJ, et al. JAMA. 2012;308:2584-2593.

SVR Was Associated With Reduced Long-Term Risk of All-Cause Mortality in an International, Multicenter Study

Impact of Treatment on Liver Failure

Van der Meer AJ, et al. JAMA. 2012;308:2584-2593.

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Chronic HCV Infection May Lead to Chronic Liver Disease and Liver Cancer

13

Chronic liver disease includes fibrosis, cirrhosis, and hepatic decompensation; HCC=hepatocellular carcinoma.

1. Highleyman L. Hepatitis C Support Project. http://www.hcvadvocate.org/hepatitis/factsheets_pdf/Fibrosis.pdf. Accessed August 18, 2011; 2. Bataller R et

al. J Clin Invest. 2005;115:209-218;

3. Medline Plus. http://www.nlm.nih.gov/medlineplus/enxy.article/000280.htm. Accessed August 28, 2012; 4. Centers for Disease Control and Prevention.

http://www.cdc.gov/hepatitis/HCV/HCVfaq.htm. Accessed May 8, 2012.

Fibrosis1

Chronic HCV infection can lead to the development of fibrous scar tissue within the liver

Cirrhosis1,2

Over time, fibrosis can progress, causing severe scarring of the liver, restricted blood flow, impaired liver function, and eventually liver failure

HCC3

Cancer of the liver can develop after years of chronic HCV infection

~75% of patients infected with HCV will develop a chronic infection and approximately 65% of those are expected to develop chronic liver disease

Decompensated cirrhosis: Ascites, bleeding gastroesophageal varices, hepatic encephalopathy, and jaundice.

Projected Numbers of Decompensated Cirrhosis and Cases of HCC to Rise Through 2020

14

Decompensated cirrhosis became more common after 1995 and is presently estimated at 11.7% of cirrhosis cases; the number of cases is expected to continue to increase through ~2020 to 2030.

HCC rose steeply after 1990. Based on the model, the incidence of HCV-related HCC is expected to peak after 219 at almost 14,000 cases per year if the risk in HCV-infected persons with fibrosis remains the same.

The best way to reduce the likelihood that someone will

develop severe complications of hepatitis C is to cure the

infection!

15

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Risk Factors for Acute Hepatitis C

Alter MJ. Presented at the NIH Consensus Development Conference, March 24, 1997.

United States, 1991-1995

*Other High Risk

Other non-injection, STDs,

and prison

Other

High Risk* 30.0%

Injection Drug Use 43.0%

Unknown 1.0%

Household 3.0%

Occupational 4.0%

Transfusion** 4.0%

Sexual (Multiple Partners) 15.0%

**None in 1995

The Morbidity and Mortality Weekly Report (MMWR)

Recommendations for the Identification of Chronic Hepatitis C Virus Infection Among Persons Born During 1945-1965

Source: CDC and Prevention. MMWR. 2012:RR61:1-32.

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NEW CDC Recommendation

– Adults born during 1945 through 1965 should receive one-time testing for HCV without prior ascertainment of HCV risk factor

– Benefits of therapy

• Reduces risk of liver cancer by 70%

• Reduces risk of all-cause mortality by 50%

Baby Boomers (Born in 1945–1965) Account for 76.5% of HCV in the US1

20

An estimated 35% of undiagnosed baby boomers with

HCV currently have advanced fibrosis (F3-F4; bridging

fibrosis to cirrhosis)3

1. Centers for Disease Control and Prevention. MMWR. 2012;61:1-32; Adapted from Pyenson B, et al. Consequences of Hepatitis C Virus (HCV): Costs of a baby boomer

Epidemic of Liver Disease. New York, NY: Milliman, Inc; May 18, 2009. http://www.milliman.com/expertise/healthcare/publications/rr/consequences-hepatitis-c-virus-RR05-

15-09.php Milliman report was commissioned by Vertex Pharmaceuticals; 3. McGarry LJ et al. Hepatology. 2012;55(5):1344-1355.

Screening of Baby Boomers May Prevent >120,000 Deaths Due to HCV Infection

› Birth-cohort screening in primary care would identify 86% of all undiagnosed cases in the birth cohort, compared with 21% under risk based screening1

› Cost effectiveness of HCV screening is comparable to cervical cancer or cholesterol screening (cost/QALY gained with protease inhibitor+IFN+RBV = $35,700)

21

Markov chain Monte Carol simulation model of prevalence of hepatitis C antibody stratified by age, sex, race/ethnicity, history of injection drug use, and natural history of chronic hepatitis C.*With pegylated interferon and ribavirin plus DAA treatment.†Deaths due to decompensated cirrhosis or hepatocellular carcinoma within 1945-1965 birth cohort. 470,000 deaths under birth cohort screening vs 592,000 deaths under risk-based screening1. Rein D et al. Ann Intern Med. 2012;156(4):263-270; 2. McGarry LJ et al. Hepatology. 2012;55(5):1344-1355.

1,070,840 new cases of HCV identified with birth-cohort screening

552,000 patients treated

364,000 patients cured*

121,000 deaths averted†

Page 8: Hepatitis C: Screening, Diagnosis, and Long-Term Management · 2017. 2. 10. · 2/10/2017 2 • 170 Million Carriers Worldwide • Global HCV Prevalence 3.0 % Hepatitis C: A Global

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Who Should Be Tested for HCV

CDC Recommendations• Everyone born from 1945 through 1965

(one-time)• Persons who ever injected illegal drugs• Persons who received clotting factor

concentrates produced before 1987• Chronic (long-term) hemodialysis• Persons with persistently abnormal ALT

levels. • Recipients of transfusions or organ

transplants prior to 1992• Persons with recognized occupational

exposures• Children born to HCV-positive women• HIV positive persons

USPSTF Grade B Recs*• Everyone born from 1945 through 1965

(one-time)

• Past or present injection drug use

• Sex with an IDU; other high-risk sex

• Blood transfusion prior to 1992

• Persons with hemophilia

• Long-term hemodialysis

• Born to an HCV-infected mother

• Incarceration

• Intranasal drug use

• Receiving an unregulated tattoo

• Occupational percutaneous exposure

• Surgery before implementation of universal precautions

22*Only pertains to persons with normal liver enzymes; if elevated liver

enzymes need HBV and HCV testing

Smith at al. Ann Intern Med 2012; 157:817-822. Moyer et al. Ann Intern Med epub 25 June 2013

Diagnosis

of infection

Assessment

of disease

Chronic HCV InfectionPersistence of HCV RNA for at least 6 months

Treatment

evaluation

HCV Diagnostic Algorithm

Modified from CDC Guidelines on Hep C Dx, MMWR 2003;52(RR03):1-16.

HCV RNA

Antibody Test

EIA for anti-HCV

Active HCV Infection

Medical Evaluation

No Current HCV

Infection

Spontaneous or

treated

HCV Genotype&

Linkage to Care

Born in age cohort

(1945-1965) or Risk

Factors

Negative for HCV Infection

Additional Testing Recommended if:

Acute HCV suspected

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Hepatitis C Antibody (HCV Ab)

• A positive antibody means that your body was exposed to the Hepatitis C virus and antibodies were made

• This does not mean that you have an active HCV infections

• HCV antibody is NOT protective

• HCV antibody will remain positive even after SVR

HCV RNA

• Referred to as “viral load”

• Available as qualitative and quantitative

• Confirms active HCV infection

• Quantitative testing is used to monitor HCV treatment

HCV RNA Testing Has No Prognostic Value

• The level of viremia does not correlate with the severity of liver disease (activity grade or fibrosis stage)

• Does not predict the outcome of HCV infection (resolution vs. persistence)

• Does not predict the natural course of the disease

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Repeated testing for HCV RNA

levels is not indicated in the

routine management and

monitoring of untreated

patients with hepatitis C

Prevalence of HCV Genotypes in the US

• 6 known genotypes.

• Little difference among them regarding transmission and natural history.

• Genotype 1 is most common in the United States. 73%

10%

8%

1%

4%

Genotype 1 Genotype 2 Genotype 3

Genotype 4, 5, 6 Mixed Genotype

Adapted from Blatt LM, et al. J Viral Hepatitis. 2000; 7:196-201.

Geographical Distribution of HCV Genotype

Page 11: Hepatitis C: Screening, Diagnosis, and Long-Term Management · 2017. 2. 10. · 2/10/2017 2 • 170 Million Carriers Worldwide • Global HCV Prevalence 3.0 % Hepatitis C: A Global

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Hepatic Fibrosis

FIBROSIS

Cholestatic

Disorders

Viral

Hepatitis

Excess

Vitamin A

Inherited

Metabolic

Disorders

Alcohol

Immune

Disorders

Drugs

NASH

Assessing Liver Damage—Liver Biopsy

Four Stages of Fibrosis

Desmet VJ et al., Hepatology 1994;19:1513

Four Stages of Fibrosis in Chronic Hepatitis: METAVIR

Stage 1 Fibrosis – Portal Stage 2 Fibrosis – PeriportalStage 3 Fibrosis – SeptalStage 4 Fibrosis – Cirrhosis (ultimate stage of scarring)

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Sampling can makethe difference between….

Desmet VJ et al., Hepatology 1994;19:1513

Or more advanced disease

Desmet VJ et al., Hepatology 1994;19:1513

Aspiration (Klatskin) needle Full core, 16g cutting needle

Desmet VJ et al., Hepatology 1994;19:1513

Page 13: Hepatitis C: Screening, Diagnosis, and Long-Term Management · 2017. 2. 10. · 2/10/2017 2 • 170 Million Carriers Worldwide • Global HCV Prevalence 3.0 % Hepatitis C: A Global

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Non-invasive Markers of Fibrosis

FibroTest / FibroSure Bili, gGT, g-globulin, haptoglobin, a2 M, apolipoprotein A

FibroSpect Hyaluronic acid, TIMP-1, a2 M

ELF (Bayer) HA, Procollagen III amino terminal peptide (PIIINP),TIMP1

HepaScore Hyaluronic acid, gGT, a2 M

Forns gGT, cholesterol, platelets, age

APRI AST /ULN X 100 / platelets (109/ L)

SHASTA; (HIV/HCV) AST, HA, albumin

FIB-4 AST, ALT, platelets, age

Fibroscan (elastography) is a rapid and non-invasive measure of hepatic stiffness

FIBROSCAN

39Ziol M et al. Hepatology 2005;41:48-54.

7.1 8.7 9.6 12.9 14.5

F1F2 F2 F3 F3F4 F4

kPa

F0F1

4 75...

Fibroscan results in kPa can be correlated with the metavir scale F0-F4

Page 14: Hepatitis C: Screening, Diagnosis, and Long-Term Management · 2017. 2. 10. · 2/10/2017 2 • 170 Million Carriers Worldwide • Global HCV Prevalence 3.0 % Hepatitis C: A Global

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PCP Education Example: Screening in Clinic

40

1,000

adult

patients

330

baby

boomers

10

HCV

antibody

positive

7 HCV

RNA

positive

3 with more

advanced

fibrosis

4 with mild

fibrosis

Efficiently identify birth cohort 1945-1965:• Electronic

prompt

~1/3 of

adults are

in 1945-

1965

cohort

• 1 of 30 baby

boomers

• 1 of 23 men

baby boomers

• 1 of 12 African

American men

baby boomers

15%-30% of

HCV antibody

patients will

spontaneously

clear

Up to 25% of

baby boomers

may have

cirrhosis

75% of cirrhotic

patients are

men

Davis, Gastro 2010; 138: 513

HCV Antibody Positive and HCV RNA Negative Patients

• If liver function tests are normal no further testing or follow up required

• Patients who have attained sustained viral response with treatment need not have repeated tests for HCV RNA to confirm a cure

• If liver function tests are elevated evaluate for other etiologies of liver disease

Approach to the Patient with Newly Diagnosed HCV

• Patients need to be educated on

• the natural history of disease

• modes of transmission of

• how to avoid transmission to family members

• the availability of effective treatment

• the reassurance that these new highly effective and safe interferon free treatments available are very well tolerated and nothing like the interferon days

• Screen for depression

• Reassurance

• Patients may benefit from referral to a support group

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Additional Measures for Newly Diagnosed Patients with HCV

• Vaccinate for hepatitis A and hepatitis B• Counsel for weight loss if appropriate. Obesity

increases likelihood of liver fibrosis• Recommend avoiding doses of acetaminophen

exceeding 1-2 grams per day• Determine presence or absence of cirrhosis• NSAIDs should be avoided in patients with

advanced fibrosis or cirrhosis

Measures to Avoid Transmission of Hepatitis C

• Avoid Sharing Razors or Toothbrushes

• Cover Bleeding Wounds

• Stop Injection Drug Use

• Advise Not to Share Needles and Paraphernalia

Sexual Transmission of HCV

• Risk of Sexual Transmission is Low in Monogamous Heterosexual Relationships

• Many Experts do not Recommend Barrier Protection for Couples that are in a Monogamous Long Term Relationship

• Patients with Multiple Sexual Partners, and Patients with HIV Should Use Barrier Protection

Page 16: Hepatitis C: Screening, Diagnosis, and Long-Term Management · 2017. 2. 10. · 2/10/2017 2 • 170 Million Carriers Worldwide • Global HCV Prevalence 3.0 % Hepatitis C: A Global

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Rate of Liver Progression is Affected by Several Patient Factors

• Male gender1

• Age at infection1

• Comorbidities such as HIV and HBV status1

• High levels of alcohol consumption1

• Immune status1

• Visceral obesity with steatosis2,3

• Diabetes4

• Insulin resistance5-7

• Synergy between risk factors8Metabolic Syndrome

Affects 37–54% of adults over 40

years old9

1. Chen SL, Morgan TR. Int J Med Sci. 2006;3(2):47-52. 2. Adinolfi LE, et al. Hepatology. 2001;33(6):1358-

1364. 3. Adinolfi LE. Expert Rev Gastroenterol Hepatol. 2013;7(3):205-213. 4. El-Serag HB, et al. Clin

Gastroenterol Hepatol. 2006;4(3):369-380. 5. Bugianesi E, et al. J Hepatol. 2012;56(suppl 1):S56-65. 6.

Mohamed HR, et al. Int J Health Sci (Quassim). 2009;3(2):177-186. 7. Khattab MA, et al. Ann Hepatol.

2012;11(4): 487-494. 8. Loomba R, et al. Am J Epidemiol. 2013;177(4):333-342. 9. Ervin RB. Natl Health Stat

Report. 2009;(13):1-7.

Steps to Slow Progress of Liver Disease

• Obesity and Smoking Increase Liver Fibrosis• Daily Marijuana Use Increases Fibrosis Progression

Rate. Odds Ratio = 3.4 (1.5 -7.4)• Patients Should be Counseled to:

• Lose Weight if Necessary• Stop Smoking• Discontinue Marijuana Use

Hu KQ: J Hepatol. 2004 Jan;40(1):147-54Hu SX: J Clin Gastroenterol. 2009 Sep;43(8):758-64Mallat A: J Hepatol. 2008 Apr;48(4):657-65Hezode C: Hepatology. 2005 Jul;42(1):63-71

Hepatitis C and Alcohol

• Hepatitis C Infection Rates in Alcoholics are Significantly Higher Than Controls

• Alcohol Use in Patients with HCV Infection Increases Fibrosis Progression Rate, Risk for Liver Cancer and Overall Mortality

• Abstinence from Alcohol is Recommended

• Educate on Synergistic Damage to liver by Alcohol and HCV

• Refer to Alcohol Rehab Programs if appropriate

Coelho-Little ME: Alcohol Clin Exp Res. 1995;19(5):1173

Chen CM: Alcohol Clin Exp Res. 2007;31(2):285

Delarocque-Astagneau E: Ann Epidemiol. 2005;15(8):551

Hassan MM: Hepatology. 2002;36(5):1206

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3’UTR5’UTR Core E1 E2 NS2 NS4BNS3 NS5A NS5Bp7

Ribavirin

Polymerase

Daclatasvir (DCV)Ledipasvir (LDV)Ombitasvir (OMV)Elbasvir (EBR)

Sofosbuvir(SOF)

Dasabuvir(DSV)

NS5B

NUC

Inhibitors

NS5A

Replication

Complex

Inhibitors

NS5B

Non-NUC

Inhibitors

(NNI)

Boceprevir (BOC)Telaprevir (TVR)Simeprevir (SMV)Paritaprevir (PTV)Grazoprevir (GZR)

NS3

Protease

Inhibitors

Protease

4A

No Cross Resistance Between Drug Classes

FDA Approved Direct-Acting Antiviral Agents (DAAs) from Multiple Classes

General Concepts About SelectingHCV Regimens

• Choice of regimen, treatment duration, and use of ribavirin depends on:

• Presence of cirrhosis

• Prior treatment experience

• PEG-RBV failure

• Prior protease inhibitor failure

• Prior sofosbuvir failure

• Genotype

• Genotype 1a vs 1b

• Genotypes 2-6

• Daclatasvir (DCV) + Sofosbuvir (SOF) (Daklinza + Sovaldi)

• Grazoprevir (GRZ)/Elbasvir (EBR) (Zepatier)

• Ledipasvir (LDV)/Sofosbuvir (SOF) (Harvoni)

• Paritaprevir/Ritonavir/Ombitasvir (PTV/RTV/OMV) + Dasabuvir (DSV) (Viekira Pak)

• Velpatasvir (VEL) + Sofosbuvir (SOF) (Epclusa)

• Ribavirin (RBV) required for some regimens in certain populations.

Approved Treatment Options Most Often Used for Genotype 1 Infection

(Most Common Genotype in US) (alphabetical)

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Cure (SVR12) in GT 1 Patients Treated with Daklinza + Sovaldifor 12 or 24 Weeks (FDA Approved for 12 Weeks)

0

20

40

60

80

100 100

SV

R12 (

%)

40/41 39/41 14/14 21/21 15/15 19/20

98 95 100 100 95

Treatment Naive Prior PI/PEG/RBV Failures

12 Weeks 24 Weeks

DCV/SOF + RBV DCV/SOF + RBVDCV/SOF DCV/SOF

Sulkowski MS et al., N Engl J Med 2014;370: 211-21

95 92 99 94 97

0

20

40

60

80

100

All Patients GT 1a GT 1b No Cirrhosis Cirrhosis

Pa

tien

ts,

(%)

299/ 316

144/ 157

129/ 131

231/ 246

68/ 70

Zeuzem, et al. Abstract #G07, EASL 2015; published online at Ann Intern Med (www.annals.org) on 24APR15.

Cure (SVR12) in GT 1 Patients Treated with Zepatier for 12 Weeks

94100

94100

0

20

40

60

80

10099 97 98 99

0

20

40

60

80

100

SV

R12 (

%)

179/

180

178/

184

181/

184

179/

181

12 Weeks 24 Weeks

LDV/SOF

+ RBVLDV/SOF

+ RBV

LDV/SOF LDV/SOF

Non-Cirrhotic Cirrhotic

32/

34

34/

34

31/

33

36/

36

LDV/SOF

+ RBVLDV/SOF

+ RBV

LDV/SOF LDV/SOF

12 Weeks 24 Weeks

SV

R12 (

%)

Afdhal, et al. N Eng J Med. 2014;370:1889-98.

Cure (SVR12) in GT 1 Patients Treated with Harvoni for 12 or 24 Weeks (FDA Approved for 12 Weeks Without RBV; 8 Weeks for

Some Patients)

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90 90

96 96

0

20

40

60

80

100

All Patients Treatment Naïve

SV

R1

2 (

%)

No Ribavirin

Ribavirin

Cure (SVR12) in GT 1a Patients Treated with Viekira Pak for 12 Weeks

94

10095

Relapse Null

Prior PegIFN/RBV Response

p=0.004 p=0.006

182/

202

569/

593

182/

202

403/

420

47/

50

36/

36

83/

87

Everson G, et al. Abstract #83, AASLD 2014

SVR

12

(%)

Most Recently Approved: Sofosbuvir/Velpatasvir(SOF/VEL) x 12 Weeks (Pangenotypic)

99 98 99 100 100 97 100

0

20

40

60

80

100

SVR

12

(%

)

618624

206210

117118

104104

116116

3435

4141

56

Total 1a 1b 2 4 5 6

Genotype

Feld JJ et al. Presented at: American Association for the Study of Liver Diseases 2015 Annual Conference; San Francisco, CA Nov 13-17, 2015.

SVR

12

(%)

More Pangenotypic Regimens in Development

Combination Treatment Phase Manufacturer

ABT-493 (NS3/4A protease inhibitor) +ABT-530 (NS5A inhibitor)

3 AbbVie

Sofosbuvir (nucleotide polymerase inhibitor) + Velpatasvir (NS5A inhibitor) + GS-9857 (NS3/4A

protease inhibitor)

3 Gilead

Grazoprevir (NS3/4A protease inhibitor), MK-3682(NS5B polymerase inhibitor) and elbasvir (NS5A

replication complex inhibitor)

2 Merck

Grazoprevir (NS3/4A protease inhibitor), MK-3682 (NS5B polymerase inhibitor) and MK-8408 (NS5A

replication complex inhibitor)

2 Merck

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Special Populations

• HIV/HCV Coinfection• ESRD• Decompensated cirrhosis• Post liver transplant

• These patients do have options and need to be referred to a provider that can treat them.

• www.hcvguidelines.org is living document and regularly updated

So now you suspect that your patient has cirrhosis…

Diagnosis of Cirrhosis Changes Approach to Patients with HCV

• Screen for HCC every 6 months• Evaluate for esophageal varices with endoscopy• Avoid all hepatotoxic drugs• Absolutely no alcohol• Refrain from use of NSAIDs including aspirin,

ibuprofen, naproxen, and others due to an increased risk of gastrointestinal bleed, potential for renal toxicity, and impaired response to diuretic therapy.

• Tylenol is ok to use in patients with cirrhosis• Recommend weight loss for obese patients

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• Primary complications include:

– Ascites

– Jaundice

– Variceal hemorrhage

– Portosystemic encephalopathy

• Other possible complications include:

– Spontaneous bacterial peritonitis

– Hepatic hydrothorax

– Hepatorenal syndrome

– Portopulmonary hypertension

– Hepatocellular carcinoma

– Portal vein thrombosis

Decompensated Cirrhosis

Lefton HB et al. Med Clin N Am. 2009;93:787-799.

Points

1 2 3

Encephalopathy None Grade 1 - 2(or precipitant-induced)

Grade 3 - 4(or chronic)

Ascites None Mild/Moderate(diuretic-responsive)

Severe(diuretic-refractory)

Bilirubin (mg/dL) <2 2-3 >3

Albumin (g/dL) >3.5 2.8 - 3.5 <2.8

Prothrombin Time (seconds prolonged)

<4 4-6 >6

Total Numerical Score

Child-Pugh Class

5 - 6 A

7 - 9 B

10 - 15 C

Classification of Cirrhosis Severity Determinants for Child-Turcotte-Pugh (CTP)

Adapted from Garcia-Tsao G et al. Am J Gastroenterol. 2009;104:1802-1829.

Patients in Class A are considered “compensated”

Patients in Classes B and C are considered “decompensated”

Classification of Cirrhosis Severity Model for End Stage Liver Disease score

• MELD - determines the severity of liver disease based on:

• serum bilirubin,

• serum creatinine

• international normalized ration (INR)

• developed in 2002 by UNOS

• Calculation:

• [0.957 x (Serum creatinine mg/dL) + 0.378 loge (Total bilirubin mg/dL) + 1.12 loge (INR) + 0.64] x 10

• Range: 6 – 40

• equates to estimated 3-month survival rates from 90% to 7%respectively

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Summary: Role of Primary Care

• HCV screening• Risk-based and one-time birth cohort screening with

HCV Ab.

• Confirmation of HCV infection• HCV RNA testing required to confirm infection.

• Counseling• HCV transmission/prevention• Risks of alcohol use

• Screening in HCV-infected individuals• HIV/HAV/HBV• Alcohol and substance use disorders

Summary: Role of Primary Care

• Vaccination• Hep A and B

• Baseline liver assessment• CBC, INR, albumin, AST/ALT, bilirubin, alkaline

phosphatase, GFR

• Treatment and Referral• Patients need to be informed of current effective,

well tolerated treatments and referred appropriately.

Case Study

• Mr. R is a 66 year old Hispanic male who comes in for a routine physical exam. He has never seen a doctor regularly as he feels great and never gets sick. His children urged him to establish a PCP.

• ROS all negative; VSS, however BP 145/87; BMI 35.2

• PMH unremarkable

• Family history• Father – DM, HTN, HLP, and died in his 70s from an MI

• Mother – HTN & DM

• Brother – HTN & cirrhosis of the liver secondary to ETOH

• Social Hx – Drink 2-3 12 oz beers on the weekends

• What tests should we order?

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MR. R

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• Thank you for your attention!

• Questions?


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