Tolerance tag team

Stopping diabetes in its tracks: autologous non-myeloablative stem cell transplantation

A recent report in this year’s April issue of Journal of the American Medical Association describes an unprecedented success in delaying insulin dependence in patients with recent-onset Type 1 diabetes after non-myeloablative immune suppression with cyclophosphamide and antithymocyte globulin followed by autologous stem cell transplantation. In this study, 14 out of 15 patients became insulin-independent, which lasted up to 35 months. Concomitantly, C-peptide levels increased substantially compared with preintervention values. Treatment of autoimmune disorders, and in particular Type 1 diabetes, constitutes a complex balancing act between suppressing autoaggressive responses strongly and permanently enough, while circumventing much-feared long-term side effects from chronic immunosuppression. This clinical Phase I/II trial is relevant to fine-tuning interventive protocols and contributing to the further development of suitable combination therapies to prevent and treat Type 1 diabetes.