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Kidney Transplantation Linked With Increased Risk Of Various Cancers

Date:
December 20, 2006
Source:
JAMA and Archives Journals
Summary:
Following kidney transplantation, some recipients may face a three-fold increased risk of certain cancer types, according to a study in the Dec. 20 issue of JAMA.

Following kidney transplantation, some recipients may face a 3-fold increased risk of certain cancer types, according to a study in the December 20 issue of JAMA.

Immune suppression after organ transplantation is associated with a markedly increased risk of nonmelanoma skin cancer, non-Hodgkin lymphoma, and Kaposi sarcoma. Whether other cancers occur at increased rates is uncertain, because there have been few long-term population-based studies, according to background information in the article.

Claire M. Vajdic, Ph.D., of the University of New South Wales, Sydney, Australia, and colleagues compared the incidence of cancer in 28,855 patients with end-stage kidney disease (ESKD) who received renal (kidney) replacement therapy (RRT). Data were collected for three separate time periods: the 5 years before RRT, during dialysis, and after transplantation. New cancers (1982-2003) were determined by record linkage between the Australia and New Zealand Dialysis and Transplant Registry and the Australian National Cancer Statistics Clearing House.

The researchers found that the overall incidence of cancer, excluding nonmelanoma skin cancer and those cancers known to frequently cause end-stage kidney disease, was markedly increased (3.27 times) after transplantation. In contrast, cancer incidence was only slightly increased (1.35 times) during dialysis and before RRT (1.16 times). After transplantation, cancer occurred at significantly increased incidence at 25 sites, and risk exceeded 3-fold at 18 of these sites.

"Although the incidence of some cancers was increased during dialysis, and the incidence of a few was increased before RRT, the magnitude and breadth of the increased risk after transplantation suggests that immune suppression causes a substantial and broad-ranging increase in cancer risk," the authors write.

"After kidney transplantation, a wide variety of cancers across a number of organ systems occur with substantially increased incidence. Most, but not all, of these cancers are those with known or suspected viral causes. In contrast, cancer incidence was only slightly increased before kidney transplantation. Our findings point to an important role of the interaction between common viral infections and the immune system in the etiology [cause] of cancers at a broad range of sites," the researchers conclude.


Story Source:

The above story is based on materials provided by JAMA and Archives Journals. Note: Materials may be edited for content and length.


Cite This Page:

JAMA and Archives Journals. "Kidney Transplantation Linked With Increased Risk Of Various Cancers." ScienceDaily. ScienceDaily, 20 December 2006. <www.sciencedaily.com/releases/2006/12/061219170712.htm>.
JAMA and Archives Journals. (2006, December 20). Kidney Transplantation Linked With Increased Risk Of Various Cancers. ScienceDaily. Retrieved April 23, 2014 from www.sciencedaily.com/releases/2006/12/061219170712.htm
JAMA and Archives Journals. "Kidney Transplantation Linked With Increased Risk Of Various Cancers." ScienceDaily. www.sciencedaily.com/releases/2006/12/061219170712.htm (accessed April 23, 2014).

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