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- When serology has been assigned for the DNA typing for both donor and patient, then the logic in the table above is applied.
- When no serology is known the following logic is applied:
- Any DPB1 mismatch is considered an Antigen mismatch. Therefore there cannot be any allele mismatches
- When C* typing has a first first field of higher than 12 → the first field is considered the Antigen
- Any other locus without assigned serology → the first field is considered the Antigen.