Permissive, nonpermissive HLA-DPB1 epitope disparities and the specificity of T cells infiltrating the skin during acute graft-versus-host disease

To the editor: Human leukocyte antigen (HLA)–DPB1 functions as a classic transplantation antigen.[1][1] In the context of hematopoietic stem cell transplantation (HSCT), when donor T cells recognize host HLA-DP, they can induce a graft-versus-host disease (GVHD) and/or a graft-versus-leukemia (