Published Ahead of Print - January 4, 2022

Simple Vaccination Is not Enough for the Transplant Recipient

Jeremy R. Chapman; Stephen J. Wigmore
The outcome of SARS-CoV-2 vaccination in vulnerable populations has been a cause for especial concern among transplant patients and the medical teams responsible for advising them. The prospect that immunosuppressed patients would not respond to vaccines for COVID prevention was based on the known need to specifically tailor vaccines for this population, for example, Shingles.

Real-world Effectiveness of the Pfizer-BioNTech BNT162b2 and Oxford-AstraZeneca ChAdOx1-S Vaccines Against SARS-CoV-2 in Solid Organ and Islet Transplant Recipients

Chris J. Callaghan; Lisa Mumford; Rebecca M.K. Curtis; Sarah V. Williams; Heather Whitaker; Nick Andrews; Jamie Lopez Bernal; Ines Ushiro-Lumb; Gavin J. Pettigrew; Douglas Thorburn; R. Forsythe; Romme Ravanan on behalf of the NHSBT Organ and Tissue Donation and Transplantation Clinical Team
The clinical effectiveness of vaccines against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in immunosuppressed solid organ and islet transplant (SOT) recipients is unclear.


The first issue of Transplantation Direct for 2022 is here. In this issue, different aspects of COVID-19 in transplantation are explored, including predictive factors for poor vaccination responses, mucormycosis, effects of COVID therapeutics on allograft function/infections, and predictive factors for anti-viral humoral responses. For biomarkers, troponin to predict heart transplant outcomes is examined and mitochondrial DAMPs to decide on DCD heart transplant suitability; also, ischemia reperfusion injury biomarkers for VCA are explored experimentally. Related to transplant-relataed vascular research, endothelial dysfunction is correlated with kidney transplant outcomes, optical coherence tomography for heart transplant vasculopathy is assessed, cardiovascular risk is evaluated in liver transplant recipients and hypertrophic cardiomyopathy is evaluated in adults after organ transplantation. Regarding organ donation, we have articles on anonymous liver donation, demographic factors for unexpected DCD programs, and informed consent related to decisions on using KDPI >85 kidneys. Other issues in kidney transplantation are examined, including survival advantages of transplantation in infants, barriers to medication non-adherence, steroid withdrawal related to PTDM/recipient age, and effects of nephrolithiasis in living donors; in liver transplantation, DCD-associated cholangiopathy is studied, as well as transplantation in the U.S. for delta hepatitis and validation of pig normothermic perfusion models. Treatment of aspergillus infections percutaneously after lung transplantation is recommended, and researchers assess new methods to assess pancreatic islet stress. You will find all the details in open access on our Transplantation Direct website.

Week's Most Downloaded Paper

Transplantation Direct
Week's Most Downloaded Paper

TTS Call for Nominations for Leadership and Awards

2022 TTS Call for Nominations for Officers and Councilors

In 2022, three Officer positions will be vacated and 5 of the 12 Councilors-at-large representing the Regions will be changing. The elections will take place early in 2022 and those elected will assume their new roles starting at the 2022 TTS Congress in Buenos Aires.

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Members can access the online nominating form at Since each nominee must have his or her form signed by three supporting members (including him/herself), the online process allows for efficient and rapid circulation.


Please note:

  • As successive presidents may not be from the same Region, members from the Middle East / Africa region who would have otherwise been eligible to become President-Elect are not eligible in these elections.
  • Only members who have served a full term on Council and have paid their dues are eligible for the Officer positions (President-Elect, Secretary and Treasurer).
  • Only full members who have paid these dues are eligible to be nominated for Council.
  • Only full members who have paid their dues may nominate and/or vote.

For more information on elections, visit the TTS website and consult the By-Laws in the “About” section.

Nominations are being sought for these positions

Officer Positions:

  • President-Elect
  • Vice President
  • Treasurer

TTS Regions:

  • Europe (1)
  • Latin America (1)
  • Middle East / Africa (1)
  • North America (1)
  • Oceania (1)


Alternatively - Click here to download Forms as a PDF

2022 Awards Call for Nominations

Medawar Prize

Call for nominations

Recognized as the world's highest dedicated award for the most outstanding contributions in the field of transplantation.

The Medawar Prize

The Medawar Prize, named after Society co-founder Sir Peter Medawar, is recognized as the world's highest dedicated award for the most outstanding contributions in the field of transplantation. The Medawar Prize has been awarded at each of our Society's biennial Congresses since 1990.

The award recognizes the outstanding investigators whose contributions have had such a profound influence on the field of organ transplantation. The Medawar Prize is universally considered to be commensurate with the most outstanding world prizes for scientific achievement.

Application Extended Deadline

May 1, 2022

Eligibility to Award

All full members in good standing will be eligible to be nominated for this award.

Frequency of Award

The Award will be given at each of the TTS Biennial congresses.

Selection of the Recipient

The selection committee consists of the previous five Past Presidents of The Transplantation Society.

Monetary Award

The monetary award will be $25,000.

Past Medawar Laureates

Starzl Prize


Application Deadline

May 1, 2022

Supported by

Early in his career, Dr. Starzl recognized the importance of deceased donation. He pioneered many facets of transplantation, including immunosuppressive drug development, organ preservation, tissue matching, surgical transplant technology, and developed the team approach to organ transplantation; thus paving the way for the success and acceptance of heart, lung, pancreas, intestinal, liver, and kidney transplantation. The international impact of the fruits of seven decades of commitment to transplantation is shown by estimates of over 600 000 Americans and millions of patients around the world that have received a life-saving organ transplantation. He was also credited as having trained over 1,000 medical and surgical transplant specialists over his 50 years in clinical medicine, many of whom have gone on to successfully develop their own transplant

Eligibility to Award

All full members in good standing will be eligible to be nominated for this award.

Frequency of Award

The Award will be given at each of the TTS Biennial congresses.

Selection of the Recipient

The Chair of the Selection Committee will be the then current TTS President, who will choose a selection committee of 3 among the Council members.

Monetary Award

The monetary award will be $10,000.

Previous Winners


Recognition Awards

Call for nominations

These awards recognize individuals who have made a major international impact in the field of transplantation. The awards are given out at each International Congress of The Transplantation Society and carry a monetary award of USD $2,000 each.

Available Awards for 2022

Outstanding Achievement Transplantation Science (Basic)

Outstanding Achievement in Transplantation Science (Clinical)

Outstanding Achievement in Transplantation Science (Developing Country)

Mentorship or Education and Training in Transplantation

Select a year to view past recipient details

WIT Awards

WIT Awards

The Women in Transplantation Steering Committee have created the Woman Leader in Transplantation Award to recognize a woman who has helped further the field of transplantation through research, policies, leadership, initiatives or other regarded contributions. The Unsung Hero Award will be presented to one woman who has had an extraordinary impact in transplantation through community service, volunteering, mentorship or other community based activity. Both Awards are presented during the presidential address at the TTS International Congress.




The Transplantation Society celebrates the contributions of basic science to the field of transplantation with the International Transplantation Science Mentee-Mentor Awards to recognize the efforts of scientists who have advanced our understanding of transplantation science and fostered the development of the young investigators who will be the future leaders in our field.

The application will open in January 2022. Deadline for submission is April 10, 2022.

Click here for more details

TTS 2022 Call For Abstracts

We are pleased to announce the opening of the call for abstracts for our 2022 Congress in Buenos Aires. We invite all our members and the transplant community as a whole to present their latest research at the Congress.

TTS 2022 is a great window to receive the right exposure and recognition in front of a global audience.

Accepted abstracts will be published in an online supplement of the Transplantation Journal.

Survey of Transplant Center Practices related to COVID-19 Vaccine Mandates

TTS is circulating this survey on behalf of Saint Louis University. You are invited to participate in a Survey of Transplant Center Practices related to COVID-19 Vaccine Mandates. While COVID-19 vaccination is widely recommended for solid-organ transplant candidates, little is known about current transplant center policies and practices related to mandating COVID-19 vaccination as a condition of active transplant candidacy. To better inform community discussions, Saint Louis University is seeking your responses to a brief survey regarding your center’s practices. They believe that this survey will take less than 10 minutes to complete. The survey has been approved by the Saint Louis University Institutional Review Board (IRB). Your participation is voluntary, and your responses will be recorded and analyzed anonymously. For more information please click the following link:

Women in Transplantation Fellowship Grant

With the support of Industry Partners, WIT will provide funding to support research to early career researchers that contributes to the the Grant Recipient's understanding of the impact of sex and gender issues in solid organ transplantation and immunology. The spectrum of studies includes epidemiological, basic, clinical and translational.

Please go to or email Katie Tait, TTS Special Initiative Manager at for more information.

Latest Video Additions

See list of available videos
Clinical Outcomes of Liver Transplantation for Patients Over 60 Years Old: A Single Center Experience
Aydıncan Akdur
Organ Donation and Transplantation in Jordan: Is There A Gender Disparity?
Abdel Hadi Al Breizat
Family approach for deceased donation
Mustafa Al Mousawi
Status of Organ Donation and Transplantation in the UAE
Ali Al Obaidli
Characteristics of Renal Replacement Therapy in Saudi Arabia 2019
Besher Al-Attar
Impact of COVID-19 Pandemic on Organ Donation and Transplantation in Saudi Arabia
Besher Al-Attar
Features of Living and Deceased Liver Donation and Transplantation in the Kingdom of Saudi Arabia
Besher Al-Attar
Living Related Donors (LRD) in Iraq: Emotion & Promotion
Ali Al-Saedi
Antegrade Laparoscopic Left Donor Nephrectomy: Single Surgeon Experience From Four Centers in Jordan and Bahrain
Samer Algeizawi
The Challenges of Kidney Transplantation in Patients with Congenital Immune Insufficiency
Khalid Alhasan
MESOT- Young Transplant Professionals: What we are looking for?
Ala Ali
Outcomes of Interleukine-2 Receptor Antagonist Induction Therapy in Standard-risk Renal Transplant Recipients Maintained on Tacrolimus
Hatem Ali
Erector Spine Plane Block for Postoperative Analgesia After Kidney Transplantation
Azamat Alimov
Is the Allocation System for Liver Transplantation in Saudi Arabia Skewed Towards Serving Patients With Hepatocellular Carcinoma?
Abdulrahman Alomar
Transplant Tourism and Various Infection Risks
Issa Alsalmi
Better Donor Detection and Referral in the Intensive Care Units in the Context of End-of-Life Care
Danica Avsec
Liver Transplant Survivors for More Than 10 Years
Ebru H. Ayvazoglu Soy
Long Term Graft Survival After Kidney Transplantation: Predictive Factors
M. Mongi Bacha
Primary Focal Segmental Glomerulosclerosis Recurrence After Pediatric Renal Transplantation
Esra Baskın
Long Term Effects of Eplerenone Treatment in Children With Chronic Allograft Rejection
Esra Baskın
Is There Any Relation Between Right Ventricular Dysfunction and Left Ventricular Assist Device Thrombosis?
Sarp Beyazpınar
Malignancy and Post-transplant PTLD 2021
Sunil Bhandari
Marcelo Cantarovich
The Use of High-Risk Donors to Increase Deceased Kidney Donation
Marcelo Cantarovich
The impact of Pancreas Transplantation on the Secondary Complications of Diabetes
Jeremy Chapman
Surgical Treatment of Portal Hypertension
Aydın Dalgıç
COVID 19 and Renal Transplantation in 2021; What is Yes? What is No?
Ihab El Madhoun
Organ Transplantation in Tunisia: Impact of Political Events Arab Spring Revolution and the Covid-19 Pandemic Era
Aziz El Matri
Senotherapy in Renal Transplantation
Tareq ElBaz
NAFLD: Key Considerations Before and After Liver Transplantation
Reda Elwakil
Evolution of Kidney Transplantation. Beginnings, Contemporary Developments, & Future Challenge
Riadh Fadhil
Effect of Structured Diabetes Education on diabetic Angiopathies Among Kidney Transplants With Post-transplant Diabetes: Kuwait Experience
Osama Gheith
Fludrocortisone Among Renal Transplant Recipients With Persistent Hyperkalemia: Single Center Experience
Osama Gheith
Young Women in Middle East Transplantation
Khadidja Habchi
One Waiting List for Pancreas and Islet Transplantation-The UK Experience
Nadey Hakim
Recurrence Rate of Early HCV Infection After Renal Transplantation Following Successful Treatment of Dialysis Patients With Direct Acting Antiviral Agents
Farina Hanif
Dilemma of Managing Antibody-Mediated Rejection
May Hassaballa
Young Professionals in Transplantation – European (ESOT Experience)
Sevda/ Hannah Hassan/ Esser
Developing Transplant Programs around the World – Importance of Health Systems Building Blocks
Vivekanand Jha
Living Donor Liver Transplantation in Egypt: A Twenty Years Experience
Refaat Kamel
Accuracy Between Estimated Graft Volume and Actual Graft Weight in Living Donor Liver Transplant
Emre Karakaya
Utility of Protocol Biopsy at 3 Months Post Kidney Transplantation
Habchi Khadidja
COVID-19 Pandemic Research Opportunity in India: What the Pandemic Is Teaching Us About Transplantation
Vivek Kute
Shifting the Tides and Ending Living Unrelated Donation Kidney Transplantations in the Middle East: The Shiraz Transplant Center Experience
S. Ali Malek-Hosseini
Developing Organ Donation and Transplantation Internationally
Marti Manyalich
Immunosuppression and Compliance After Orthotopic Liver Transplantation: State of the Art
Ignazio R. Marino
Immunopathology of Covid-19 and Allograft Rejection
Marwan Masri
Management of HLA and/or ABO Incompatible Patients in Kidney Transplantation: Role of Kidney Paired Donation
Khalid Meshari
Impact of Pre-transplant hemoglobin Blood Level on Kidney Transplantation Outcome at One Year: A Retrospective Study
Robert Najm
The Challenges in Selecting Donors in an Intrafamilial Program in a Developing Country
Anwar Naqvi
Pancreas and Intestinal Transplantations in Shiraz Transplant Center
Saman Nikeghbalian
Prevalence and Evaluation of the Different Profiles of Arterial Hypertension in Renal Transplantation Evaluated by Outpatient Measurement
Mehdi Rabhia
The Outcomes of Renal Transplantation During the COVID-19 Pandemic. Is It Worth Doing?
Muhammad Rehan
Long Term Yearly Kidney Donor Follow-up: 20 Years and Beyond
Adibul Rizvi
Approach to Resolve the Transplantation Challenges in Egypt
Gamal Saadi
Deceased Organ Donation in Syria: Challenges and Solutions
Bassam Saeed
How Did the War Affect Organ Transplantation in Syria?
Bassam Saeed
The Impact of Covid-19 Pandemic on The Management of Pediatric Kidney Transplant Recipients
Bassam Saeed
Pediatric Organ Transplantation: Data From Middle East Countries
Bassam Saeed
Organ Transplantation in Syria
Bassam Saeed
Pediatric Versus Adult Kidney Transplantation Activity in Arab Countries
Bassam Saeed
Updates on Everolimus in liver Transplant. Novartis Symposium
Faouzi Saliba
How to Embark Upon a Career As a Leader in Transplantation?
Shaifali Sandal
Predictability and Risk Factors for Development of New Onset Type-2 Diabetes Mellitus After Transplantation
Faissal Shaheen
Bladder Reconstruction and Medical Therapy in Recipients With Neurogenic Bladder Dysfunction
Nasser Simforoosh
The Dual Aspect of Deceased Organ Donation
Antoine Stephan
Recent Data from the Collaborative Transplant Study
Caner Suesal
Improving Quality in the Live Kidney Donor Process
Annika Tibell
Organ Allocation: Balancing Equity and Utility
Stefan Tullius
Everything Flows, Nothing Stands Still
Andreas Tzakis
Stereotactic Ablative Body Radiotherapy as a Bridge to Liver Transplantation for Hepatocellular Carcinoma: Preliminary Results of Başkent University Experience
Guler Yavaş
Technical Variations of the Liver Procurement to Increase Liver Utilization
Hasan Yersiz

The TTS-ILTS Paired Transplant Centers Program is now accepting applications!

The TTS-ILTS Paired Transplant Centers Program is a collaboration between The Transplantation Society (TTS) and the International Liver Transplantation Society (ILTS) supporting new liver transplant programs in emerging economies. Deadline: January 1, 2022.

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