Record number: 161Adverse Occurrence type: ABO immunisationMPHO Type: BoneDemonstration of imputability or root cause: Anti-HLA antibodies found via testing before and after graftingImputability grade: Not AssessableKeywords: boneHLA (human leukocyte antigen)antibodiesallogeneicReferences: Humoral immunity to bone allografts: development of IGG to donor alloantigens is associated with delayed union and poor functionLong-term follow-up of patients with osteochondral allografts. A correlation between immunologic responses and clinical outcomeSuggest references: aaa