#2921 ·
Carl Jackson32 said:Hi, I'm on dialysis and my mom is my donor. The transplant is scheduled in two or three weeks. I was just wondering if someone could help me interpret these typing results.
Mine: HLA-A*01, *02; B*35, *52; C*04, *12; DRB1*11, *15; DQB1 *03(DQ7), 06
Mom's: HLA-A*01, *03; B*18, *35; C*02, *04; DRB1*11, - ; DQB1 *03(DQ7), -
I want to know how compatible we are. The department hasn't mentioned anything about the typing yet, and all the processing is done, so we're just waiting for the date. We were actually staying in the transplant ward until the COVID situation caused them to push our date back.
Hello,
The antigens with the most significant impact on transplant outcomes are A, B, and DR. Since everyone carries two A, two B, and two DR antigens, we look at a total of six. Not all antigens carry equal weight. The DR antigen is the most critical; ideally, the donor and recipient should match on both DR antigens. Next is the B antigen, while the A antigen is the least significant.
You and your mother match on 3 out of the 6 antigens—specifically HLA-A*01, HLA-B*35, and HLA-DRB1*11.
According to Eurotransplant, there is a specific ranking system with defined thresholds regarding which combinations are insufficiently compatible for a kidney transplant. On that list, there are 15 acceptable combinations.
On that scale, your specific combination sits at 14th place (out of 15) in terms of compatibility. For comparison, a better match would involve matching both DR antigens while having mismatches in both the A and B antigens.
That said, when predicting the actual probability of graft acceptance or rejection over the next 5 to 10 years, several other parameters beyond HLA antigen compatibility play a major role.