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Transplantation –To infinity and beyond
July 2018
Dr Bill Monday
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Topics covered in this presentation
— Overview —
01 Overview of transplantation in Australia
02 Solid organ transplantation
03Stem cell transplantation
04 Bio-printing
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Aim of talk:
— Overview —
1.To make you all organ donors ☺ …. ( https://register.donatelife.gov.au/decide)
2.To get a feel for transplants in Australia
3.To note use of stem cell transplantation in MS
4.To ensure you don’t change your home printer into a bio-printer yet…..
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Transplantation
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Overview of transplantation in Australia
- Section 01 -
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Transplants performed in Australia from deceased donors.
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http://www.anzdata.org.au/anzod/updates/20180606_ANZODMonthlyReport_2018May.pdf
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Transplants performed in Australia from deceased donors.
7http://www.anzdata.org.au/brochures/brochure_2016v1.0_20180417.pdf
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Transplants performed in Australia from deceased donors.
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http://www.anzdata.org.au/anzod/updates/20180606_ANZODMonthlyReport_2018May.pdf
Jan May- 2018 Number of transplants
Kidney 385
Liver 127
Heart 57
Lung 184
Pancreas 18
Stomach and intestine 0
Multi-organTransplant
Jan –May2017
Heart and lungs 3
Kidney and Heart 4
Kidney and Liver 5
Kidney and Lungs 1
Kidney and Pancreas 16
Total 29
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Survival of Graft 1997-2016
http://www.anzdata.org.au/brochures/brochure_2016v1.0_20180417.pdf
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Solid Organ Survival Australia
1 Year 5 Year 10 Year
Kidney 99-97% 96-90% 83-74
Heart 87% 81% 70%
Lung 93% 70% 32%*
Pancreas 96% 92% 82%
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* USA survival data
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Common causes of renal disease leading to renal transplant.
• Diabetes- 31%
• Chronic Glomerulonephritis 28%
• Polycystic Kidney Disease-12%
• Nephrosclerosis 9%
• Lupus 3%
• Interstitial Nephritis 3%
• Other 14%
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Outcomes after transplants
Standardised mortality per 100 patient years:
• Dialysis 6.3
• Cadaveric transplant 3.8
• Living Donor transplant 2.0
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Causes of death in renal transplant patients
14tp://www.anzdata.org.au/anzdata/AnzdataReport/40thReport/chapter03_mortality_2016_v1.0_20180411.pdfht
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Long term complications of transplantation
• Cardiovascular disease (Death With a Functioning Graft- DWFG) 7.6% chance of MI or
coronary revascularization after 5 years.
• Why?
• More calcification in arteries
• More LVH.
• Caution esp in-
• Diabetics,
• CVS disease during dialysis
• Ongoing proteinuria.
• Renal function post transplant also NB with a 16% increase in CVS events for every
5ml/min/1.73m2 decrease below a eGFR of 45ml/min/1.73m2
• Immunosuppression including steroids increase BP and increase dyslipidaemia.
15https://academic.oup.com/bmb/article/106/1/117/322190. Update on long term complications of renal transplantation Mathew J Bottomley et at British Medical Bulletin 02 May 2013
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Long term complications of transplantation
• Cancer (DWFG)
• Cardiovascular disease and cancer account for 47% of all deaths with a functioning
graft with 27% of death being due to cancer)
• Majority of cancers are Non Melanoma Skin Cancers (NMSC)
• Lymphomas higher than the general population
• Kaposi’s Sarcoma more common in transplanted patients
16https://academic.oup.com/bmb/article/106/1/117/322190. Update on long term complications of renal transplantation Mathew J Bottomley et at British Medical Bulletin 02 May 2013
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Long term complications of transplantation- Cancer
17https://academic.oup.com/bmb/article/106/1/117/322190. Update on long term complications of renal transplantation Mathew J Bottomley et at British Medical Bulletin 02 May 2013
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Immunosuppresssion
• All kidney transplants require life long immunosuppression to prevent T cell rejection. It’s
a bit of a balance as you need to:
• Prevent acute and chronic rejection.
• Minimize drug toxicity and rates of infection and malignancy
Complications include:
• Rejection
• Nephrotoxicity of certain immunosuppressive drugs such as Cyclosporin and Tacrolimus
• Recurrence of native kidney disease
• Acute rejection occurs in first 6 months (15% of cases)
• Chronic rejection occurs more than a year after transplantation
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Complications of common Transplant drugs
Complications CVS Carcinogenesis Other Nephrotoxicity
Ciclosporin ↑BP, ↑ Lipids,↑ Diabetes risk
Yes, carcinogenic Pancreatitis, All transplants have impaired function ( even if biochemically normal) . To avoid any medication that may effect the kidney such as NSAIDs, Certain antibiotics such as Aminoglycosides
Tacrolimus ↑BP, ↑ Lipids,↑ Diabetes risk
No carcinogenesis InsomniaHeadaches
Azathioprine No effect Yes, carcinogenic Low White cell count
Mycophenolate ↑ Lipids Possible, some evidence
Teratogenic
Sirolimus ↑ Lipids Possible, some evidence
Pneumonititis, oedema
Everolimus ↑ Lipids Possible, some evidence
Pneumonititis, oedema
Corticosteroids ↑BP, ↑ Lipids,↑ Diabetes risk
Limited evidence19
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Underwriting considerations of transplanted patient- Kidney.
Deceased or living donor in case of kidney
Present renal function- preferably eGFR, Creat below 150 as rule of thumb
Presence of proteinuria , hypertension
Cardiovascular, cancer and diabetic risk
Medication and side–effects of medication.
20https://academic.oup.com/bmb/article/106/1/117/322190. Update on long term complications of renal transplantation Mathew J Bottomley et at British Medical Bulletin 02 May 2013
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Stem Cell Transplantation.
- Section 03 -
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Stem cell transplants – Around a 1000/year in Australia
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Indications:
• Leukaemia
• Lymphoma
• Myeloma
• Amyloidosis
• Aplastic anaemia
• Some solid tumours (e.g testicular cancer, breast cancer)
• Some immune system disorders (scleroderma)
• MS
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Stem Cell Transplant.
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A stem cell transplant replaces blood forming cells in your bone marrow that have been
destroyed by chemotherapy or radiotherapy with healthy stem cells
A stem cell transplant can be your own stem cells ( Autologous 2/3 of cases ) or stem cells
from a donor ( Allogenic)
Stem cell transplants have 4 main phases
1)Stem cell collection from you or a donor (1-2 weeks)
2)Transplant treatment (Chemotherapy or radiotherapy – 1 week)
3) IV transfusion of healthy Stem cells (1 day)
4) Recovery 2-12 weeks
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Survival after Stem cell transplant
Survival improving due to better tissue matching, better supportive care and earlier referral
for transplantation.
Allogenic bone marrow transplants potentially curative with most deaths occurring in the
first 2 years post transplant. 5 Year survival 89% and 10 year survival 85%.
Causes of death-
– Age related
– Relapse of malignancy
– Chronic Graft Versus Host Disease ( GVHD)
– Second cancers ( 2-10% of deaths in late survivors)
Australia at the forefront creating blood stem cells in the lab. Used pluripotent stem cells to
create blood cells
25
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Graft Vs Host Disease
This can only occur in Allogenic transplants
The donated bone marrow/stem cells see the recipient’s body as foreign and attack,
Graft vs Host disease can be acute or chronic
GVHD can affect the skin, liver, eyes, mouth, lungs, GIT tract, neuromuscular system or
genitourinary system.
Immunosuppressives are prescribed thus increasing infection risk.
26
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Fairly predictable and favourable prognosis after 2 years of survival
27https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3107742/
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Stem cell Transplantation in MS
- Section 02 -
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MS- Different subtypes.
Relapsing Remitting ( RRMS-85%)
Secondary Progressive MS ( SPMS- Rare)
Primary Progressive MS ( PPMS- 10%)
Progressive relapsing MS ( PRMS-5%)
29https://www.multiplesclerosis.com/us/treatment.php
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Types of MS
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Relapsing
Remitting MS
Secondary
progressive
MS
Progressive
relapsing MS
Primary
Progressive MS
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MS- Treatment
Methylprednisolone (Solu-medrol)
Dexamethasone
Beta interferons
Glatiramer acetate
Fingolimod
Teriflunomide
Dimethyl fumarate
Mitoxantrone
Natalizumab
31https://www.multiplesclerosis.com/us/treatment.php
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MS- Cell based therapy
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Stem cell transplantation for MS.
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1. I/AHSCT. Intensive chemo to kill immune system- Immuno-Ablative Haematopoietic
Stem Cell Transplant. Cost $80,000
2. Mesenchymal Stem Cells +/- 2 million stem cells reintroduced with more normal
immune function. Rebooting the immune system without it attacking the body uses a
different kind of stem cell which is isolated from different tissue including bone marrow
and fat. Mesenchymal stem cells secrete chemicals that dampens the immune system
and a milieu that is more supportive for self repair of the central nervous system.
3. Use of oligodendrocyte progenitor cells
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Bio-printing- Section 04 -
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Bioprinting
Bio-printing
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Bio-printing
• Testing of Cosmetics and other consumer goods
• Drug screening
• Personalised medicine
• Regenerative Medicine (Bone and cartilage, skin, dental, vasculature, complex
organs)
• Cell-based Biosensors
• Food and other animal products
• Education
• Academic research
• Bionics
• Market expected to reach a value of $1.9 Billion by 2028.
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Bio-printing
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Bio-printing- Biomimicry
Biomimicry involves the identical reproduction of the cellular and extracellular components of a tissue or organ. An example would be the mimicking of the branching patterns of blood vessels.
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Bio-printing- Autonomous self assembly
This uses embryonic organ development as a guide. The early cells produce their own extra cellular matrix, appropriate cell signalling and autonomous organization to produce the right micro-architecture and functioning.
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Bioprinting- Mini- Tissues.
Organs and tissues comprise of smaller, functional building blocks-mini tissues. Mini tissues can be fabricated and assembled by rational design or self assembly or a combination of both
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1. Imaging- X-ray, CT, MRI2. Design approach-Biomimicry, self- assembly. Mini-tissues3. Material selection4. Cell selction –differentiated cells, multipotent stem cells5. Bio-printing-Inkjet. Micro-extrusion, laser assisted6. Application- Maturation, implantation, in vitro testing
Bio-printing- Multi-Stepped Approach
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PRIVATE & CONFIDENTIALBioprinting- ConsiderationsRejection remains a problem unless autologous cells used
Many primary cells are difficult to isolate and culture and have a finite life span.
Embryonic stem cells and pluripotent stem cells hold great promise due to indefinite
self renewal.
Still need increased resolution, speed and compatibility with biologically relevant
materials.
Cross linking of cells and the extracellular matrix are ongoing challenges
Building a vascular tree and perfusion remains challenging.
It is thought a Human D organ is around 1o -15 years away
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Reinvent
Thank You
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For more information, please contact:
NameDr Bill MondayPacific Life Re | CMO
T: +610282748634E: [email protected]
W: www.pacificlifere.com
ContactContact
The views contained in this document are confidential, do not constitute advice and are not intended to be relied upon as such. While this information has been prepared in good faith, no representation or warranty, express or implied, is or will be made and no responsibility or liability is or will be accepted in relation to the accuracy or completeness of the information contained herein and any such liability is expressly disclaimed.