Why Choose Paired Kidney Exchange Even When Compatible?
Even when a donor and recipient are medically compatible and could have a direct transplant, they might join a Paired Kidney Exchange (PKE) to get benefits their original donor cannot provide. This option, called “unbalanced KPD,” allows these pairs to exchange their compatible donor for one who may be a better match for the recipient.
Before outlining these advantages in detail, it is important to clarify the reasons why medically compatible donor–recipient pairs may still choose to participate in a paired donor program. The primary potential benefits for compatible pairs include:
- Superior immunological matching: Some people join to get a better HLA (Human Leukocyte Antigen) match. This is especially helpful for those with a high HLA mismatch at first, since it can improve the transplant’s quality and help it last longer.
- Optimized donor characteristics: The registry can help find a younger donor or a kidney that is a better size match for the recipient than their original donor.
- Reduced future sensitization risk: Getting a better-matched kidney is important for patients who may need another transplant later. A good match lowers the chance of developing antibodies, which helps keep more options open for future procedures.
Lower medical complexity: Compared to other options like desensitization, PKE usually has fewer medical risks, lower costs, and less risk of infection because it does not require strong pre-transplant medications.
