Interpretation of the HLA epitopes—Continuous dilution method for detection of high‐titer IgG HLA antibody

BACKGROUND: The presence or absence of human leukocyte antigen (HLA) antibodies, especially the strength of donor‐specific HLA antibodies (DSAs), has important roles in clinical evaluation and diagnostic decision‐making for solid‐organ transplantation. Dilution patterns help to give a new sight of HLA epitopes. “Epitope matching” is likely to lower the risk of developing DSA and increase the likelihood of matching a compatible donor. METHODS: We collected data evaluating HLA antibodies with a titration study using mean fluorescence intensity. RESULTS: Diluting the serum of recipients can reduce potential inhibitory effects, accurately evaluate the intensity of donor‐specific HLA antibodies, and guide surgeons to take or not take intervention measures. Dilution patterns also help to give a new sight of HLA epitopes. CONCLUSION: We believe that from the viewpoint of HLA antibodies, the dilution model can provide new tools and insights for the study of HLA epitopes.