Abstract

This study assessed the outcomes of combination therapy including rituximab for antibody-mediated rejection after lung transplantation. Retrospective chart reviews were performed for all patients who received combination therapy including rituximab for post-lung transplantation antibody-mediated rejection between June 2008 and October 2018. Among the 196 consecutive patients undergoing lung transplantation during the study period, eight (4.1%) were eligible for this study. Two patients (25.0%) were classified as having clinically definite antibody-mediated rejection and six (75.0%) as having possible antibody-mediated rejection. Prior to treatment, four patients (50.0%) met the definition of chronic lung allograft dysfunction; seven of the eight patients (87.5%) remained alive at 6months and four (50.0%) at 12months after antibody-mediated rejection. All patients identified as having chronic lung allograft dysfunction, prior to the treatment, died of allograft failure, or underwent re-transplantation. Decreases in the mean fluorescence intensities of the major donor-specific antibodies were observed in three patients. One patient, diagnosed with clinical antibody-mediated rejection but without pre-treatment chronic lung allograft dysfunction, began treatment relatively soon after lung transplantation, and demonstrated improved respiratory function at the 3-year follow-up. Our experience suggests that multimodality therapy that includes rituximab is feasible and may prevent progression of antibody-mediated rejection after lung transplantation in selected patients.

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