In transplantation, which factor is most important for success?

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Multiple Choice

In transplantation, which factor is most important for success?

Matching HLA antigens between donor and recipient is crucial because the immune system uses these surface proteins to distinguish self from foreign. The more similar the donor’s HLA molecules are to the recipient’s, the less likely host T cells will recognize the graft as foreign and mount an attack, leading to lower risk of acute rejection and better long-term graft survival. HLA compatibility is the strongest predictor of transplant success, which is why it’s prioritized in donor-recipient pairing. Traits like height, hair color, or eye color don’t affect immune recognition or graft acceptance, so they don’t influence success. Immunosuppressive therapy helps suppress any residual immune response, but the degree of HLA match remains the most influential factor.

Matching HLA antigens between donor and recipient is crucial because the immune system uses these surface proteins to distinguish self from foreign. The more similar the donor’s HLA molecules are to the recipient’s, the less likely host T cells will recognize the graft as foreign and mount an attack, leading to lower risk of acute rejection and better long-term graft survival. HLA compatibility is the strongest predictor of transplant success, which is why it’s prioritized in donor-recipient pairing.

Traits like height, hair color, or eye color don’t affect immune recognition or graft acceptance, so they don’t influence success. Immunosuppressive therapy helps suppress any residual immune response, but the degree of HLA match remains the most influential factor.

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