title: The rationale for the new deceased donor pancreas allocation schema.
abstract: BACKGROUND
  To ensure the continued success of whole organ pancreas and islet transplantation, deceased donor pancreas allocation policy must continue to evolve.
  
  
  METHODS
  To assess the existing system, the Organ Procurement and Transplantation Network (OPTN)/United Network for Organ Sharing Kidney and Pancreas Transplant Committee retrospectively analyzed the disposition and outcomes of deceased donor pancreata in the United States between January 1, 2000 and December 31, 2003.
  
  
  RESULTS
  During the time period studied, consent was obtained but the pancreas was not recovered in 48% (11,820) of organ donors. The most common reasons given for nonrecovery were poor quality of the pancreas and difficulty in placement. Of whole organ pancreata that were transplanted, 90% were from donors with a body mass index (BMI) <or=30 kg/m and age <or=50 years. Pancreata from older and more obese donors were used more often for islet transplantation or research. For simultaneous pancreas-kidney transplants, the 1- and 3-year pancreas graft survival was lower when the donor was age >50 years (P=0.04), and there were trends toward lower graft survival with donor BMI >30 (P=0.06) and increasing cold-ischemia time.
  
  
  CONCLUSIONS
  Based on these data, the OPTN adopted a new allocation algorithm in which pancreata from donors >30 kg/m or >50 years of age are, unless accepted for a local whole organ pancreas transplant candidate, preferentially allocated for islet transplantation. These data also suggest that many good quality pancreata are not procured, emphasizing the need for improved communication and cooperation between organ procurement organizations and pancreas and islet transplant programs.
authors.affiliation: Department of Surgery, Division of Transplantation Surgery, Mayo Clinic, Rochester, MN 55905, USA. stegall.mark@mayo.edu
authors.forename: Mark D
authors.initials: MD
authors.lastname: Stegall
authors.forename: Patrick G
authors.initials: PG
authors.lastname: Dean
authors.forename: Randall
authors.initials: R
authors.lastname: Sung
authors.forename: Mary K
authors.initials: MK
authors.lastname: Guidinger
authors.forename: Maureen A
authors.initials: MA
authors.lastname: McBride
authors.forename: Cindy
authors.initials: C
authors.lastname: Sommers
authors.forename: Giacomo
authors.initials: G
authors.lastname: Basadonna
authors.forename: Peter G
authors.initials: PG
authors.lastname: Stock
authors.forename: Alan B
authors.initials: AB
authors.lastname: Leichtman
mesh_terms: D000367:Age Factors; D000465:Algorithms; D015992:Body Mass Index; D050377:Cold Ischemia; D017408:Guidelines as Topic; D015276:Health Care Rationing; D006801:Humans; D008875:Middle Aged; D016035:Pancreas Transplantation / Q000639:trends; D014019:Tissue Donors; D020858:Tissue and Organ Harvesting; D009927:Tissue and Organ Procurement