advances in abdominal organ transplantation in …...advances in abdominal organ transplantationin...
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Advances in Abdominal Organ Transplantation in the last Quarter
Century
Charles M. Miller, M.D.Professor of Surgery
Enterprise Director of TransplantationDirector, Transplant Center
Cleveland Clinic
OptumHealth Education28th Annual National Conference
October 14-16, 2019Minneapolis, Minn
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• Technical• Organ Preservation• Immunosuppression• Early acceptance – kidney and liver• Expansion of indications
History of Transplantation:First Quarter Century
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History of TransplantationOn Dec. 23, 1954, a team led by Dr. Joseph E. Murray at the Peter Bent Brigham Hospital in Boston transplanted a kidney from a 23‐year‐old man named Ronald Herrick to his identical twin, Richard, whose kidneys were failing.
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History of Transplantation
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1963
First human liver transplant - Dr. Thomas Starzl(University of Colorado)
History of Transplantation
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• Collins in 1969: Describes his high potassium flush solution
• Relatively long-term preservation (first of kidneys, then of livers) becomes possible
G.M. Collins et al, Lancet,2: 1219-221969
History of Transplantation
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History of Transplantation
• 1978 is a crucial year:Cyclosporine A, discovered by accident by Borel in 1976,
is used clinically for the first time (in Kidneys) by Calne
R.Y.Calne et al, Lancet, 2: 1033-36, 1979
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• In 1980, Starzl begins a trial of Cyclosporine A andsteroids in liver transplantation:– the results are so much better that some do not believe they
are true
T.E.Starzl et al, Transplantation Proceeding, 13: 281-5, 1981
History of Transplantation
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1983Liver transplantation is approved as a therapeutic modality by NIH Consensus Conference
History of Transplantation
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LIVER TRANSPLANTATION
OPERATION
– HEPATECTOMY– ANHEPATIC PHASE– IMPLANTATION– BILIARY RECONSTRUCTION
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Veno-Venous Bypass
Inferior vena cava flow of up to 60% of cardiac output
Hepatic blood flow up to 2 liters per minute
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Piggyback Technique
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• Expansion of scope with improved immunosuppression– Multivisceral, Kidney/Pancreas, LDLT, Uterus, Abdominal Wall
• Expansion of indications– Growing patient waiting lists, Organ shortage– Allocation debates
• The Liver Wars
• More Media focus• More regulatory focus• More focus on finance and value propositions
History of Transplantation:Second Quarter Century
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1950 1960 1970 1980 1990 2000 2010
Azathioprine
Antilymphocyteantibodies
Steroids
OKT3
CyclosporinTacrolimus
Mycophenolatemofetil
RAPA
IL‐2Ra
Alemtuzumab
Belatacept
Everolimus
(AEB‐071)
Bortezomib
Rituximab Alefacept
Immunosuppressive Drug Timeline
(Tasocitinib)
(Ixekizumab)(TOL101)
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Preservation
• Better preservation solutions – UW solution ‐ 1987– HTK ‐ 2002
• Machine Preservation of Liver ‐ still in development– Hypothermic– Normothermic blood
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FranceLondon, Ontario
1988First successful liver-small bowel1989First successful isolated small bowel
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Figure 5:The different types of visceral transplantation; A) Isolated intestine, B) Combined liver-intestne, and multivisceral that includes the stomach, duodenum, pancreas, and intestine with (C) and without the (D) liver (Modified from Abu-Elmagd et al, Annals of Surgery 2015, 262 (4): 586-601, used with permission)
A DCB
Gut Failure and Intestinal Transplantation
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Miami, FL2002First Successful Abdominal Wall Transplant by Tzakis
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0.00
0.25
0.50
0.75
1.00
.
.
0 5 10 15 20
Years after Transplant
.
0.00
0.25
0.50
0.75
1.00
Surv
ival
Pro
babi
lity
.
0 5 10 15 20
.
Years after Transplant
Graft (N=238)Patient (N=227)
Surv
ival
Pro
babi
lity
Figure 12. Kaplan-Meier survival curves for conditional patient (A) and graft (B) survival after visceral transplantation. The analysis excluded patients who demised before the 5-year posttransplant landmark. (Reprinted from Abu-Elmagd KM, Kosmach-Park B, Costa G, et al. Ann Surg 2012;256(3):494-508; used with permission)
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Conundrum of LDLT
• Living donor liver transplantation is a very valuable tool that can help mitigate the organ shortage
• But, there is a low but finite risk of donor morbidity and mortality
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Context
• LDLT has an especially important role for many patients who have little or no chance of receiving an organ from a deceased donor.
• The last 2.5 decades have produced significant advancements – medically, surgically and technically.
• Originally, an adult donated a left lateral segment for a pediatric recipient; this evolved to full left lobes and then rapidly to full right lobe donation from adult to adult. This is an example of rapidly escalating risk.
• Despite that, the demand caused a rapid growth in the volume of procedures and centers
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Living Donor Liver Transplant Volumes at Mount Sinai, NY: 1993-2001
1
62
7 5
10
33
5654
0
10
20
30
40
50
60
1993 1994 1995 1996 1997 1998 1999 2000 2001
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But Remember!
“Success is a lousy teacher. It seduces smart people into thinking they can’t lose.”
Bill Gates
And the Media is always watching and waiting!
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The World as I Knew it Changed…
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Example of Lack of Preparedness, Recognition and Response
• Michael Hurewitz dies suddenly on a Sunday, Jan. 13, 2002 at Mount Sinai Hospital 3 days after donating the right lobe to his liver to his brother who was a reporter for the Albany Times Union and formerly the NY Post
• The institution was suffering from a crisis of leadership, financial turmoil and loss of confidence at the State DOH
• There was little immediate institutional recognition of the threat the event posed and no plan to deal with the upcoming chain of events and ensuing crisis.
• Cause of death was uncertain and wide-spread media speculation preceded careful review and port-mortem
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NY and National Media
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The Stressful Investigations
• NY State Department of Health– The sentinel event– The entire program– My culpability
• UNOS• ABS – my credentialing• And of course, the media investigations!
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And 5 months later…..
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Tony Pinna – Modena, Italy
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In Search of the Left Lobe
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Number of Living Donor Liver Transplants Nationally: 1995-2014
54
524
280
0
100
200
300
400
500
600
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
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Re‐starting: The “Muzzle” was taken off!
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Liver Transplantation, Vol 10, No 10 (October), 2004: pp 1315–1319
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More Regulatory ScrutinySRTR Graft and Patient Survival
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Living Donor Liver Transplants Nationally: 1995-2014
54
524
280
0
100
200
300
400
500
600
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
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ILTS presentation in Valencia: 2011
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Definitioninevitable
– adj 1. unavoidable2. sure to happen; certain
– n (often preceded by the) something that is unavoidable
“If we truly believe that living donor death should be a zero event, we should not be doing living donor transplants, because it will never be a zero event,” – Mike Abecassis, 2010 AASLD
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OK then…• If it is inevitable and we still believe the service is essential, how do we best
prepare for the day when a donor dies? • Can thoughtful preparation help mitigate against the potential negative
impacts (reputational , operational, emotional) to the field, the institution, the program, other patients and the surgeon?
• The answer is YES.• The goal is to emerge from a challenging situation
stronger than before.
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Crisis Preparation• How and why do other professions and institutions prepare?
– Disasters can occur anywhere and at any time. – The saying in the crisis field is: "when, not if." – Minimizes the potential for a disaster occurring in the first place
• Better sense of security– Minimizing impromptu decision-making during a crisis– Best ensures organizational stability and an orderly recovery– Ensuring the safety of customers and personnel – Minimizing potential economic loss, legal liabilities and disruption– Best ensures organizational stability and an orderly recovery– But is labor-intensive and tedious process.
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Communication1. Single communication plan in event of a crisis:
a. InternalInstitution wide
b. ExternalRegulatoryMedia relations team – maintain control of the message; communicate only oneProfessional Societies
2. Designate an internal event and analysis core teamRoot cause analysisCorrective action plan (depending on RCA)Offer grief counseling to team and family
• 3. For some reason deaths of living liver donors generate much more media attention than deaths of living kidney donors
• Livers area lightening rod: Be prepared!
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Annual Volume of Living Donors Liver Transplants:Cleveland Clinic
04 6 5 5 5 4
00
10
20
30
40
50
60
2004 2005 2006 2007 2008 2009 2010 2011
Two donor deaths within the US
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From Theory to Reality: Restarting and re-invigorating our sleepy little LDLT program
• Team Retreat– Survey of stakeholders – should we do this?– Discussion of need for our own crisis plan and team
• Two working groups– Clinical Protocol Task Force
• Focus on left lobe priority– Crisis Management Team
• Global Institutional acceptance and buy-in
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Crisis Management Team
• Assemble Your Core Team
– Executive leadership, media, legal, ombudsman, risk mangement, Ethics
• Prepare Written Crisis Plan
• Establish Internal Notification Procedures
• Establish external contacts (regulators, media, societies)
• Train for Media Interviews
• Test and practice the Plan
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Results –Process Improvement
• Better team work and environment• Better case planning• Pre and post-transplant notification to crisis team • Great enthusiasm for program inside and outside of main campus• COE approval from Optum - 2013
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Better case planning
RHV 41.0%V8 2.5%V5 25.4%Inf HV 30.5%
in the Graft
Need V5 reconstruction
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3DPrintofRightLiverLobeof
LiveDonor
NativeRightLiverLobeof
LiveDonor
Thedonorisa42‐year‐oldbrotherwhounderwentrightlobehepatectomyTherecipientis53‐year‐oldmanwithHCVcirrhosis
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Annual Volume of Living Donors Liver Transplants:Cleveland Clinic
0
46 5 5 5 4
0
1210
18
1416
10
19
0
10
20
30
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Addition 4 cases at CCAD
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Revisiting the Left LobeDoes Size Really Matter?
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P < 0.0001
Peak donor bilirubin
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P = 0.23
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What about the recipient?Clinical Presentation of Small-for-Size Syndrome
Jaundice and coagulopathy
Intractable ascites
Encephalopathy
Renal failure
Sepsis
No obvious surgical complication
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Pathophysiology of Small-for-Size Syndrome
Demetris et al, Am J Surg Pathol 2006
Excessive portal flow to small graft↓
Hepatic arterial spasm via hepatic arterial buffer response
High resistive index with diastolic reversal
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Known Risk Factors for Small-for-Size Syndrome
• Small actual graft size (GRWR < 0.8%, %SLV < 40%)
• Suboptimal graft quality (Donor age > 40 years, donor BMI > 30, steatosis)
• Recipient disease severity (MELD > 20, ICU stay, dialysis, ventilator)
• Excessive portal flow (PVP > 15 mmHg, TIPS, large spleen)
• Suboptimal venous outflow of the new graft
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Functional Graft SizeActual Graft Size (GRWR)
Larger
Smaller
Graft Outflow
Maximized Outflow
Venous outflow stricture
Graft Quality
Better
Worse
• Donor age• Donor BMI• Steatosis
Graft Inflow
Normal portal pressurePortal hyperperfusion
• Portal pressure• Portal flow volume• Portosystemic shunt
Recipient Disease Severity
Lower MELD
Higher MELD
• MELD• Child‐Pugh• Medical urgency
The area of the pentagon is minimal functional graft size to prevent small‐for‐size syndrome
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Unmodifiable Factors
Actual Graft Size (GRWR)
Graft Outflow
Graft Quality Graft Inflow
Surgically Modifiable
Recipient Disease Severity
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Splenic artery ligation
Splenectomy
Portocaval shunt
Surgical Modification of Portal Inflow
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Ikegami T, et al. J Am Coll Surg, 2009
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Graft Survival with or without Splenectomy
Yes (n=36)
No (n=33)
P=0.363
Splenectomy
Gra
ft Su
rviv
al (%
)
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Botha, et al. Liver Transpl, 2010Hashikura, et al. HPB, 2004
Outflow Considerations: Don’ts and Do’s
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Outflow MaximizationVenoplasty: Left Lobe Graft
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Outflow Modulation in Left Lobe Graft Take down the left phrenic vein Use all 3 hepatic veins as outflow May close the left hepatic vein rather than right
hepatic vein to adjust discrepancyMHV+LHVRHV
Outflow for left lobe
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Outflow modification ‐‐ Right lobe
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Need perfect tri-phasic waveform in OR
It is almost as if the right atrium is actively siphoning blood out of the liver
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Systematic Maximization of Functional Graft Size
Actual Graft Size (GRWR)
Graft QualityGraft Inflow
Recipient Disease Severity
Graft Outflow
Splenectomy
Venous Outflow Maximization
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Adult Living Donor Graft Selection at Cleveland Clinic
2012-Present
< 0.5%
Right Lobe – 50 cases(Future liver remnant > 30%)
0.5-0.8% > 0.8%
Degree of portal hypertensionMELD score
Medical urgencySplenorenal shunt?
Left Lobe –33 cases
GRWR with Left Lobe
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Innovations in Dashboard MetricsSRTR Graft and Patient Survival
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Adult Transplant (Age 18+) 1 Year Graft Loss
SRTR Bayes Criteria (To be flagged: A>75% or B>10%)
44.1
54.3 61.466.8
71.283.4
86.9
0.1 0.1 1.3 1.5 2.2
13.1 14.7
0102030405060708090
100
July,2019 (n=123) Jan.2020 (n=134) July,2020 (n=127) Jan.2021 (n=117) July,2021 (n=97) Jan.2022 (n=59) July,2022 (n=35)
A: Probabilty HR>1.2(%) B: Probability HR>2.5(%)
Mean HR=1.46Mean HR=1.13 Mean HR=1.26 Mean HR=1.32 Mean HR=1.55 Mean HR=1.74 Mean HR=1.76
3 3 2 22
11
[07/19:TX1/1/16‐6/30/18][01/20:TX7/1/16‐12/31/18] [07/20: TX1/1/17‐6/30/19][01/21: TX 7/1/17‐12/31/19][07/21:TX1/1/18‐6/30/20][01/22: TX7/1/18‐12/31/20]][07/22:TX1/1/19‐06/30/21]
(SRTR Outcome Assessment: 5:better than expected,4:somewhat better than expected,3:as expected,2:somewhat worse than expected,1:worse than expected)
On paper, program is as expected (‘3‐tier’) and no issues apparent
However, examining future cohorts representing transplants and outcomes that have already occurred, there is a noticeable poor trend that would reach thresholds for poor performance
Given opportunity to alter these projections, careful identification of root causes and correction – and NOT just avoiding adjusted risk is critical
Innovation – Early warning system
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Innovations
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New Innovation – Uterus Transplant for Uterine Infertility
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Conclusions• The model history of Transplantation in over a half a century
• The first quarter century was informed by proofs of concept that it could be done technically and rejection/infection could be controlled
• The second quarter century was marked by more and more success, expansion to other organs and organ combinations and many many new important innovations
• The regulatory focus on outcomes and the media’s focus on anything spectacular made crisis planning a necessary part of any program to protect patients, caregivers and the field
• I think many of us have found “The Left Lobe”; and it is much safer!
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Cleveland Clinic Core Values
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Thank you
• Cleveland Clinic Main Campus
• Cleveland Clinic Florida (Weston)
• Cleveland Clinic Abu Dhabi (CCAD)
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Thank You