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Table 2 The matching algorithm and points allotted for each attribute

From: Foundations and principles of the Canadian living donor paired exchange program

Attribute Match points
Any transplant 100
Highly sensitized (cPRA ≥ 80%) 125
ABO Match: O to O 75
Paediatric recipient 75
Recipient is Prior Living Donor 75
HLA 0/6 Mismatch 75
Dialysis Wait Time (starting at initiation of dialysis) Days/30
Geography: Same City 25
Donor/Recipient Age Δ ≤30 years 5
ABO Match: A to A, B to B, AB to AB 5
EBV Negative to Negative Match 5