Policies

• NMDP Policy for HLA Confirmatory Typing Requirements for Unrelated Adult Donors and HLA Typing Requirement for Patients (PDF) (Effective February 27, 2021)
• NMDP Policy for Cord Blood Unit and Patient HLA Confirmatory Typing (PDF) (Effective January 2015)
• NMDP HLA Typing Discrepancy Review Process (PDF)
  Includes an overview of the HLA typing discrepancy investigation process, a review of NMDP guidelines, specific examples of discrepancies, and a Discrepancy Typing Form. (June 2008)
• NMDP Policy for Handling Recent HLA Nomenclature Changes (PDF)
  Includes extension of nomenclature to describe synonymous mutations, renaming of HLA alleles, naming of alleles with aberrant expression and expansion of NMDP allele codes to four characters. (February 2003)