Issues and controversies in Liver Transplantation: The ...–Dr. Mondrian Kantor (USA): favors...
Transcript of Issues and controversies in Liver Transplantation: The ...–Dr. Mondrian Kantor (USA): favors...
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Issues and controversies in Liver Transplantation: The Medical Side
Nizar N. Zein, M.D.Mikati Foundation Endowed Chair in Liver DiseasesMedical Director, Liver Transplantation; Chief of Hepatology
November 11, 2009
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The Justification for OLT is Obvious
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The Issue is Known
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The Treatment is Effective
OLTOLT NotNot
Two-year Survival
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The Questions
•Selection of best candidates?
•Outcomes and follow up after OLT?
•Pushing the envelop (emerging indications)
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The First Step: Building The Dream Team
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It is A Team Approach!
On ListManagement
Service Innovation
Surgery
andPost-OLT
HepatologyCare
AnesthesiaICU
SurgicalExpertiseDropout
Wait time
HepatologyCare
Location
Financial
Coordinator
Social ServicesDonor
management
Protocols
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First Issue to Face
• There is an ever increasing gap between the number of organs needed and supply.
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Evolution of New Concepts
If you would understand anything,
observe its beginning and its
development.
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1963…A very special
year
First human liver transplant -
Dr. Thomas Starzl
(University of Colorado)
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LIVER TRANSPLANTATION
THE FIRST PATIENT:
Three year old boy with biliary atresia;
he died on the table
T.E.Starzl et al, Surgery, Gynecology & Obstetrics, 117: 659-76, 1963
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Reactions!!
• Most scientists and the public believed that Starzel was reckless and some accused him of being unethical.
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Ethics Of OLT
• While OLT is now an accepted therapy for those with liver failure, its ethics will continue to be debated as we expand indications to those with no liver disease…
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History Repeats ItselfApril 8, 1886 at 3:42 PM
• The first human appendectomy was performed at the Zurich Hospital by Dr. R. KRÖNLEIN and a team of 6 specialists. The patient was a 17 year old female (Ms Gluck). Twenty-three nurses were assigned exclusively for the care of this patient.
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History Repeats ItselfApril 9, 1886
• A nationwide media conference was held, during which it was announced that the patient passed gas on day 1 post-operatively.
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History Repeats Itself: May 14, 1886
• An international commission formed that included army officers, clergymen and lawyers to study the deep moral and ethical issues raised by the operation.
– Dr. Mondrian Kantor (USA): favors limiting the procedure to newborn infants
– Dr. Hector Gomez (Venezuela): favors partial appendectomies
– Sir Osler Worthington (UK): felt that since the appendix is the seat of the soul, it should not be tampered with under any circumstance
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Liver Transplantation Milestones
• 1967 Use of azathioprine + steroids + antibodies
• 1967 1st pediatric patient survived > 1yr
• 1978 Introduction of cyclosporine
• 1983 NIH consensus conference
• 1989 Introduction of tacrolimus
• 1984 - National Organ Transplant Act
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Survival after OLT Before and After CYS
0%
20%
40%
60%
80%
100%
0 3 6 12 18 24 30 36 42 48 54
Months after OLT
% S
urv
ival AZA Child
CYA Child
AZA Adult
CYA Adult
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1983Liver transplantation is
accepted as a therapeutic
modality by NIH Consensus
Conference
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“The operation itself is but one incident, no doubt the most dramatic, yet still only one in the long series of events which must stretch between illness and recovery”
Sir Berkeley Moynihan
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OLT
Indications
Accepted Emerging
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Liver transplantation should be reserved to those that have exhausted standard medical and surgical therapies.
Liver transplantation is a form of treatment, and as such was designed for those with life threatening complications of end stage liver disease.
Liver Transplantation
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Complications of Liver Cirrhosis
Portal hypertension Esophageal varices Ascites Splenomegaly Cardiovascular dysfunction Cardiomyopathy Hyperdynamic circulation Pulmonary dysfunction Arterial hypoxemia from pulmonary shunts Pulmonary hypertension Synthetic dysfunction Coagulopathy Hypoalbuminemia Renal dysfunction Hepatorenal syndrome Platelet dysfunction and coagulopathy Electrolyte disturbances Neurologic dysfunction Hepatic encephalopathy Excretory dysfunction Jaundice Pruritis Risk of malignancy
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Indications for LTX
• Chronic end-stage liver disease–Chronic Hepatitis B and C–Alcoholic liver disease–Autoimmune hepatitis–PBC–Secondary biliary cirrhosis–PSC–Biliary atresia–NASH
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Indications for LTX
• Metabolic liver disease–Wilson’s disease–Alpha-1 antitrypsin deficiency–Hemochromatosis
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Emerging
Indications
Malignant
Disease
Recurrent
Disease
Uncommon
Disease
HCV
NASH
AIH
PSC/PBC
Amyloidosis
Oxylosis
Cystic Fibrosis
Metabolic Diseases
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Rising Incidence of HCC: US 1976-1995
0
1
2
3
4
5
6
7
1976-1980 1981-1985 1986-1990 1991-1995
Incidence (per 100,000 population)
Black men
White men
Black women
White women
H. El Serag and A. Mason, NEJM, 1999
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H. El Serag and A. Mason, NEJM, 1999
Kiyosawa K, Jpn. J. Inf. Dis., 55, 69-77, 2002
Hepatocellular Carcinoma : Incidence Time
Trends
(Age(Age--adjusted rates of death for HCC per 100,000 of population) adjusted rates of death for HCC per 100,000 of population)
40.0
19.0
10.9
4.8
10.2
7.5
7.02.3
0 10 20 30 40 50
Death rate per 100,000
Japan
Italy
France
USA
80s'
90s'
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Trends in OLT for hepatic malignancies in USA
0
200
400
600
800
1996 2002 2006
Other
Cholangio
HCC
UNOS Database
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Milan Criteria: 1996Milan Criteria: 1996
•• One lesion less than 5 cm, OROne lesion less than 5 cm, OR
•• Up to 3 lesions each less than 3 cmUp to 3 lesions each less than 3 cm
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HCC and the Milan Criteria
Mazzaferro V. N Engl J Med 1996;334: 693-9.
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Expanded Criteria For OLT in the setting Expanded Criteria For OLT in the setting of HCCof HCC
•• UCSF:UCSF:
––Single tumor up to 6.5 cmSingle tumor up to 6.5 cm
––<< 3 tumors each up to 4.5 cm but with 3 tumors each up to 4.5 cm but with cumulative diameter up to 8 cm. cumulative diameter up to 8 cm.
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TTV< 35.8 cm3 in patients BEYOND Milan criteria
0
Pro
po
rtio
n w
ith
Recu
rren
ce
Months since transplant
12 24 36 48 60
0.0
0.2
0.4
0.6
0.8
1.0Within MilanBeyond Milan/TTV <35.8
Beyond Milan/TTV ≥≥≥≥35.8p-value <0.001
0
Months since transplant
12 24 36 48 60
Within MilanBeyond Milan/TTV <35.8
Beyond Milan/TTV ≥≥≥≥35.8p-value <0.002
72
n=15 pts
n=15 pts
Recurrence Survival
n=14 pts n=14 pts
n=92 pts
n=92 pts
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Transplant For Recurrent Disease(HCV)
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Retransplantation for recurrent HCV
• Hepatitis C is the most common indication for liver transplantation in most countries.
• Re-infection of liver allografts is virtually universal and occurs at reperfusion
• HCV liver injury is believed to be more aggressive in transplant recipients compared to non-transplant patients.
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Recurrent HCV
• HCV is currently responsible for at least 40% of all re-tx in the U.S. and the number is anticipated to rise.
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Patterns Of HCV Recurrence
Severe Fibrosing Cholestatic HCV
Recurrence
Chronic Hepatitis
Linear Rate Of Fibrosis
Progression
Delayed Onset Progression
5%-10%
25%* 65%*
* At 5 years follow-up
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Factors With Impact On Recurrent HCV
Donor age
Steatosis
Iron load
CMV status
Donor Factors
Immunosuppressive drugs (steroids, MMF)
Ischemic time
Immune status
Non-Caucasian race
Female gender
Pre-OLT RNA
Post-OLT RNA
Genotype 1b
Genetic diversity
IatrogenicHost FactorsViral Factors
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Treatment of Recurrent HCV
• Using Pg IFN and RBV combination therapy (5 studies/~150 pts):–SVR 26%-40% (average 23%)
–High withdrawal due to side effects (7%-43% mostly due to anemia)
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Results of Re-tx for HCV
0
20
40
60
80
100
1 year 2 year
HCV +
HCV -
Survival %
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Predictors of poor outcome after re-tx
• Time: Later is better
• Renal function
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Current Recommendations
• For selected patients with recurrent HCV after initial OLT, re-tx is an appropriate option
• Those with early and severe recurrence of HCV or those with a significant renal dysfunction, re-tx is associated with poor outcome and should be avoided.
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Disease Recurrence post OLT: NASH vs. HCV
Zein NN, et al. 2009
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The Impact of Steroids on Disease Recurrence
Zein NN, et al. 2009
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Survival post OLT: NASH vs. HCV
Zein NN, et al. 2009
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Cause of Death NASH Hepatitis C
Cardiovascular events
4 1
Recurrence of Liver disease
0 8
Others 1 2
Cause of Death post OLT: NASH vs. HCV
Zein NN, et al. 2009
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Familial Amyloidosis Polyneuropathy
• FAP is an autosomal-dominant inherited systemic disease– Neuropathy (peripheral and autonomic)
– Cardiomyopathy
– Nephropathy
– Malnutrition
• A mutant protein is produced by the liver and deposited in various tissues.
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Familial Amyloidosis Polyneuropathy
• OLT is the only definitive therapy for FAP
• Worldwide experience include > 550 patients transplanted in 54 centers
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Familial Amyloidosis Polyneuropathy
• One year and 5 years survival are 90% and 82%, respectively
• Abnormal Amyloid protein becomes undetectable and most patients has no further progression of neuropathy or cardiac disease.
• 30% of patients may even improve
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Ethics Of OLT
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Waitlist death (%)
0
5
10
15
20
25
2000 2001 2002 2003 Mean
%
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The First Assumption
More transplants =
1. Lower waitlist mortality2. Lower MELD at OLT3. Better post-OLT outcome4. Improved financial state
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It has been suggested that increasing OLT volume by It has been suggested that increasing OLT volume by
using marginal organs may lead to lower outcome using marginal organs may lead to lower outcome
raising ethical dilemmas: Going Against Conventional raising ethical dilemmas: Going Against Conventional
Wisdom!!!Wisdom!!!
VOLUMEVOLUMEOUTCOMEOUTCOME
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Changing Philosophy?
• Donors: Greater use of extended criteria donors and DCD
• Recipients: More liberal listing of:–Obese patients–Patients with multi-organ dysfunction–HCC beyond Milan–Sicker patients who were not able to
complete chemical dependency treatment after approval by the Ohio Solid Organ Transplant Consortium
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Increasing the Volume
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Looking at the Outcome
• Assess intention-to-transplant outcome following a change in our program philosophy associated with a significant increase in OLT volumes and the use of marginal donors.
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Measuring the Outcome2000-2004 vs. 2005-2007
• Volume of OLT
• Average MELD at the time of OLT
• Waitlist death
• 1-year Graft survival
• 1-year Patient survival
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Volumes
0
20
40
60
80
100
120
140
160
180
2000 2001 2002 2003 Mean0
20
40
60
80
100
120
140
160
180
2005 2006 Mean
00-04 05-07
ListedOLTP<0.0001
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Severity of illness
50% increase in patients with MELD > 21
P<0.0001
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Waitlist death (%)
0
5
10
15
20
25
2000 2001 2002 2003 Mean
00-04 05-07
0
5
10
15
20
25
2005 2006 Mean
% %
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1-year graft survival (%)
75
80
85
90
95
2000 2001 2002 2003 Mean
00-04 05-07
P=0.96
75
80
85
90
95
2005 2006 Mean
% %
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1-year patient survival (%)
75
80
85
90
95
2000 2001 2002 2003 Mean
00-04 05-07
P=0.99
75
80
85
90
95
2005 2006 Mean
% %
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Pre- and post-transplantation outcome following a change from program-centered to patient-
centered selection committee decision making
Zein NN, Miller C, Bennett R, Smith M, Humberson A
Presented at the OLT ethics conference in Chicago, 2008
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Conclusion
• Changing our program philosophy resulted in:
–Greater OLT volumes
–Decrease in waitlist death
–No compromise of graft or patient survival
• These findings may have implications in the era of continued shortage of organs.
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The First Step: Building The Dream Team
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Current Outcomes: US Transplant Scientific Registry (CCF, July 07-June 08)Data Published in January 2009
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Current Numbers: US Transplant Scientific Registry (CCF, July 07-June 08)
Item Observed Expected
Adult Graft Survival 84 82
Adult Patient Survival 91 88
Peds Graft Survival 100 93
Peds Patient Survival 100 93
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US Transplant Scientific Registry (CCF, 3-year survival
Item Observed Expected
Adult Graft Survival 75.4 72
Adult Patient Survival 80 77
Peds Graft Survival 87.5 82
Peds Patient Survival 87.5 80
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Conclusions
•Recent advances in knowledge has led to expanded list of indications for OLT.
•The risk/benefit ratio and its ethics will continue to be evaluated as we move forward with “non-traditional”indications for organ transplantation.
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Thank you for participating in our webinar today!
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