HLA Matchability Calculator

Expected probability of finding compatible deceased donors in the US donor pool

About this calculator

Based on a candidate's antigen-level HLA typing and the OPTN CPRA HLA genotype reference dataset, this calculator reports the expected probability of finding compatible donors in the US deceased donor pool. Results are presented under two complementary scientific views: the four allocation mismatch categories (0-ABDR, 0-DR, 1-DR, 2-DR) and the seven allocation match categories (0/6 through 6/6 ABDR matches).

Candidate HLA Antigen (split antigen level)
Broad antigen typing detected
Calculating HLA Matchability scores...
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Matchability Result
% of donor pool

The bar stacks the exhaustive 0-DR / 1-DR / 2-DR partition (sums to 100%). 0-ABDR mismatch is a subset of 0-DR mismatch and is drawn inset at the top of that band rather than stacked beside it.

Population: — Compute time: — Run: —