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Most human tissue and organ transplants are allografts. Due to the genetic difference between the organ and the recipient, the recipient's immune system will identify the organ as foreign and attempt to destroy it, causing transplant rejection. The risk of transplant rejection can be estimated by measuring the panel-reactive antibody level.
Cytomegalovirus (CMV) is the most common opportunistic infection that may occur after a kidney and other solid organ transplants and is a risk factor for graft failure or acute rejection. [79] [81] BK virus is now being increasingly recognised as a transplant risk factor which may lead to kidney disease or transplant failure if untreated. [82]
EU Facts and Figures. "Key facts and figures on EU organ donation and transplantation", EU Directorate General for Health & Consumers, London, 27 October 2005. Retrieved on 31 March 2012. Johnson, E. and Goldstein, D. Do defaults save lives?. Science Magazine, 21 November 2003.
Liver transplantation is a potential treatment for acute or chronic conditions which cause irreversible and severe ("end-stage") liver dysfunction. [4] Since the procedure carries relatively high risks, is resource-intensive, and requires major life modifications after surgery, it is reserved for dire circumstances.
The US network used to get donated kidneys, livers and hearts to desperate patients has serious issues and "needs to be vastly restructured."
Kidney transplantation is typically classified as deceased-donor (formerly known as cadaveric) or living-donor transplantation depending on the source of the recipient organ. Living-donor renal transplants are further characterized as genetically related (living-related) or non-related (living-unrelated) transplants, depending on whether a ...
Median survival rates can be quite misleading, especially for the relatively small sample that is available for these organs. Survival rates improve almost yearly, due to improved techniques and medications. This example is from the United Network of Organ Sharing (UNOS), the USA umbrella organization for transplant centers.
At 5 years post-transplant, 80% of lung transplants, 60% of heart transplants and 50% of kidney transplants are affected, while liver transplants are only affected 10% of the time. [20] Therefore, chronic rejection explains long-term morbidity in most lung-transplant recipients, [ 23 ] [ 24 ] the median survival roughly 4.7 years, about half ...