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- Assign a score based on the typed loci and the resolution of the cord blood unit
- Each locus can have one of the following “resolutions”
- High resolution typing (only one ARD)
- Low or intermediate typing
- No typing
- Each resolution class per locus has a “score”.
- High resolution typing = 20
- Low or intermediate typing = 17
- No typing = 0
- WMDA will sort cord blood units based on the sum of the score first and only then by TNC/CD34+
- n/6: sum of score at A, B, DRB1
- n/8: sum of score at A, B, C, DRB1
- n/10: sum of score at A, B, C, DRB1 and DQB1
- Sorting for 0, 1 and 2 mismatches remains unchanged
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