| Feature | Optimatch | HAP-E | ATLAS |
|---|---|---|---|
| AB search | Yes | No | |
| ABDR search | Yes | Yes | Yes |
| AB Antigen, DRB1 allele match (for cord matching) | Yes | No | |
| Sorting performed by Matching Engine | Yes | No | Yes |
| Information about probability of match at other allele at already mismatched locus | No | Yes | No? |
| Flexible scaling to accommodate periods of high and low use of the engine | No | Yes | Yes |
Overview
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