Allele Name Truncations

Beginning June 1st, 2016

New logic for creating Multiple Allele Codes (MACs) will be deployed. There will not be any changes to the user interface with this release. This will be the first step toward fully automating allele code creation and will also align MAC allele name formatting to WHO nomenclature standards.

Allele name truncations which carry an expression character to the truncated two-field name will no longer be allowed in MACs.

For example: A*02:01:01:02L must be truncated to a two-field name for inclusion in MACs:

• A*02:01L will no longer be allowed in MAC allele lists.
• A*02:01 should be used instead. This is because the truncated allele name A*02:01 includes all allele names that begin with A*02:01.

Non-truncated two-field allele names that have an expression character may be used in MACs with or without the expression character:

For example: C*04:09N can be included in MACs as:

• C*04:09N, or
• C*04:09

These changes will not affect MACs which have already been created. 

If you have any questions please contact: new-allelecodes@nmdp.org.