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Updated: Nov 8, 2025
Mouse Kidney Transplantation: Models of Allograft Rejection
Published on: October 11, 2014
Exploring the Complexity of Death-Censored Kidney Allograft Failure
Manuel Mayrdorfer1, Lutz Liefeldt1, Kaiyin Wu2
1Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, Berlin, Germany.
Insights
Kidney graft loss is frequently multifactorial, with intercurrent medical events, T cell-mediated rejection, and antibody-mediated rejection being common causes. Understanding these complex factors is crucial for improving long-term transplant success.
Area of Science:
- Nephrology
- Transplantation Immunology
- Clinical Medicine
Background:
- Kidney graft loss (GL) is a significant complication in renal transplantation.
- Limited research has comprehensively explored the diverse causes of GL.
Purpose of the Study:
- To investigate and categorize the multifactorial causes of kidney graft loss.
- To identify the primary and secondary contributors to renal allograft failure.
Main Methods:
- A novel approach was used to categorize persistent declines in renal function.
- Physicians retrospectively evaluated biopsies, lab tests, and medical history for 303 graft loss cases.
- Data spanned transplants performed between 1997 and 2017 at a major university hospital.
Main Results:
- Over half (51.2%) of graft loss cases had multiple contributing causes.
- The most frequent causes were intercurrent medical events (36.3%), T cell-mediated rejection (TCMR, 34%), and antibody-mediated rejection (ABMR, 30.7%).
- Antibody-mediated rejection was the most common primary cause (21.5%), identified in 77.9% of cases with a single attributed cause.
Conclusions:
- Kidney graft loss is often multifactorial and more complex than previously understood.
- Identifying diverse causes of GL is essential for developing targeted interventions.
- The predominant causes of graft loss can change over time.
Background:
Few studies have thoroughly investigated the causes of kidney graft loss (GL), despite its importance.
Methods:
A novel approach assigns each persistent and relevant decline in renal function over the lifetime of a renal allograft to a standardized category, hypothesizing that singular or multiple events finally lead to GL. An adjudication committee of three physicians retrospectively evaluated indication biopsies, laboratory testing, and medical history of all 303 GLs among all 1642 recipients of transplants between January 1, 1997 and December 31, 2017 at a large university hospital to assign primary and/or secondary causes of GL.
Results:
In 51.2% of the patients, more than one cause contributed to GL. The most frequent primary or secondary causes leading to graft failure were intercurrent medical events in 36.3% of graft failures followed by T cell-mediated rejection (TCMR) in 34% and antibody-mediated rejection (ABMR) in 30.7%. In 77.9%, a primary cause could be attributed to GL, of which ABMR was most frequent (21.5%). Many causes for GL were identified, and predominant causes for GL varied over time.
Conclusions:
GL is often multifactorial and more complex than previously thought.
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