We report here on the clinical, histological and immunological findings regarding a patient with immunodysregulation polyendocrinopathy enteropathy X-linked syndrome who was treated for the first 21years with a combination of immunosuppressant agents (IS). The potential modalities of care and treatment options in this rare and severe immune-mediated disorder are discussed. So, long-term outcome for IPEX patients can be obtained with immunosuppressive treatment, which is important since the outcome of haematopoietic stem cell transplantation for this population is variable.