LOW RATE OF ACUTE LUNG ALLOGRAFT REJECTION AFTER THE USE OF DACLIZUMAB, AN INTERLEUKIN 2 RECEPTOR ANTIBODY

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Abstract
The incidence and the severity of acute lung allograft rejection has been linked to the development of bronchiolitis obliterans syndrome. Therefore, we investigated the effects of daclizumab, a humanized monoclonal antibody directed against the alpha subunit of the interleukin 2 receptor, in reducing acute rejection after transplantation. We retrospectively evaluated 27 patients who received daclizumab as induction immunosuppression and compared them with a historical control group of 34 patients. Both groups received similar immunosuppressive regimens involving tacrolimus, prednisone, and either azathioprine or mycophenolate mofetil. All patients received cytomegalovirus and aspergillus prophylaxis. Twenty-one patients in the control group and 22 patients in the daclizumab group were available for analysis at 6 months after lung transplantation. Ten (48%) patients in the control group had at least grade 2 acute rejection compared with four (18%) in the daclizumab group (P Therapy with daclizumab resulted in a significant decrease in the incidence of grade 2 or greater acute rejection after lung transplantation compared with historical controls. There seems to be no increase in the incidence of adverse effects in the patients treated with daclizumab.