Human leukocyte antigen matching in organ transplantation: what we know and how can we make it better (Revisiting the past, improving the future)

Current Opinion in Organ Transplantation
Anat R Tambur

Abstract

A renaissance for human leukocyte antigen (HLA) testing emerged with the understanding that donor-specific HLA antibodies play a significant role in long-term allograft survival. This renewed focus on donor/recipient histocompatibility led to a recent quest to decipher antibody responses or, as introduced into the transplantation lexicon, 'HLA-epitope matching'. Whether matching is at the antigen or the epitope level, in-depth understanding of how histo-incompatibility leads to activation of an immune response is required. HLA-DQ donor-specific antibody (DSA) has the highest association with poor graft survival. However, HLA-DQ antigens and antibodies are understudied and significant gaps still exist in understanding the function of HLA-DQ in immune activation. Much of our knowledge about HLA class-II molecules is derived from studies performed on HLA-DR, whether it is crystallography, antigen processing and presentation analysis, or activation of T-cell signal-transduction pathways. Indeed, HLA-DQ molecules are less amenable for laboratory testing, but the limited studies that were performed indicate that HLA-DQ might have, at least to some extent, a different role compared with HLA-DR. This review highlights qualities of HLA-...Continue Reading

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Citations

Jun 26, 2021·KI Reports·Hossein MohammadhassanzadehUNKNOWN Genome Canada Transplant Consortium
Dec 5, 2021·HLA : Immune Response Genetics·Estelle GeffardNicolas Vince

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