New kidney allocation policy could improve the success of transplantations in the US

May 15, 2014

A newly approved US policy regarding allocation of kidneys from deceased donors will likely improve patient and transplant survival, according to a study appearing in an upcoming issue of the Journal of the American Society of Nephrology (JASN). The true effects of the new policy are yet to be seen, however, and officials will evaluate its intended and unintended consequences on an ongoing basis.

In 2013, the Organ Procurement and Transplantation Network in the United States approved a new national deceased allocation policy that officials hope will lead to better long-term kidney survival and more balanced waiting times for . Implementation of the policy is expected to occur later this year.

The policy applies a new concept, called longevity matching, whereby deceased donor kidneys in the top 20th percent of quality are first allocated to candidates with the longest expected survival after transplantation and then to the remaining candidates. The new policy also includes several other changes, such as giving priority to so-called sensitized patients, who have reactive antibodies that limit their compatibility with donors.

Ajay Israni, MD, MS (Scientific Registry of Transplant Recipients [SRTR], Hennepin County Medical Center, and the University of Minnesota) and his colleagues created simulation models to compare the effects of the new allocation policy with the policy that is currently in place. Among the major findings:

  • Under the new policy, transplanted organs are expected to survive longer in recipients (median of 9.07 years vs 8.82 years).
  • There will be an estimated average 7.0% increase in median patient life-years per transplant and an estimated average 2.8% increase in median allograft years of life under the new allocation policy. Assuming 11,000 transplants, this could lead to a gain of 9,130 life-years of patient survival and 2,750 years of allograft survival.

"The simulations demonstrated that the new deceased donor kidney allocation policy will improve overall post-transplant survival and improve access for highly sensitized candidates, and it will have minimal effect on access to transplant by race/ethnicity," said Dr. Israni. There will likely be small declines in transplants for candidates aged 50 years and older, however.

In an accompanying editorial, Jesse Schold, PhD (Cleveland Clinic) and Peter Reese, MD, MSCE (University of Pennsylvania) noted that the study underscores the significant complexity of organ allocation. "Compared with the status quo, we can welcome some improvements in overall graft survival within the population and better opportunities for some disadvantaged patients… as well as certain tradeoffs," they wrote. "However, there are also likely to be unanticipated changes in patient, provider, and payer behavior, as well as unforeseen secular changes."

Explore further: Elimination of national kidney allocation policy improves minority access to transplants

More information: The article, entitled "New National Allocation Policy for Deceased Donor Kidneys in the United States and Possible Effect on Patient Outcomes," will appear online at jasn.asnjournals.org/ on May 15, 2014.

The editorial, entitled "Simulating the New Kidney Allocation Policy in the United States: Modest Gains and Many Unknowns," will appear online at jasn.asnjournals.org/ on May 15, 2014.

Related Stories

Disparities exist in kidney transplant timing

January 31, 2013

African-Americans and individuals without private health insurance are less likely than others to receive a kidney transplant before requiring dialysis, according to a study appearing in an upcoming issue of the Clinical ...

Recommended for you

A recipe for long-lasting livers

April 22, 2015

People waiting for organ transplants may soon have higher hopes of getting the help that they need in time. Researchers at the RIKEN Center for Developmental Biology have developed a new technique that extends the time that ...

Surgeon to offer ideas on a way to do human head transplants

February 26, 2015

Sergio Canavero of the Turin Advanced Neuromodulation Group has made it known that he intends to announce at this summer's American Academy of Neurological and Orthopedic Surgeons meeting, that he believes he has put together ...

New tool helps guide brain cancer surgery

July 3, 2014

A tool to help brain surgeons test and more precisely remove cancerous tissue was successfully used during surgery, according to a Purdue University and Brigham and Women's Hospital study.

New imaging technique sharpens surgeons' vision

February 11, 2014

Which superhuman power would you choose for help on the job? For Dr. Julie Margenthaler, it's a technology that brings to mind X-ray vision, used for the first time Monday during an operation to remove a patient's lymph node.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.