The EBMT-ADWP and the CIBMTR.

Hematopoietic stem cell transplantation (HSCT) has evolved over the last 25 years as a specific treatment of patients with severe neurologic autoimmune diseases (ADs), through eradication of the pathologic, immunologic memory, and profound immune "resetting." HSCT for ADs is recently facing a unique developmental phase across transplant centers. Data from patients undergoing HSCT and cellular therapies have been captured through the established major transplant registries, such as the European Society for Blood and Marrow Transplantation (EBMT) and the Center for International Blood and Marrow Transplant Research (CIBMTR). The EBMT Autoimmune Diseases Working Party (ADWP) is central to bringing together HSCT and disease-specialist communities. The AD section of the EBMT registry is the largest database of its kind worldwide, reporting more than 3700 transplants. Multiple sclerosis (MS) covers approximately 50% of transplants in AD, HSCT being an integral and standard-of-care part of the treatment algorithm. In the Americas, at least a subset of HSCT is reported to the CIBMTR, as reporting is voluntary. A total of 1400 recipients of autologous HSCT were reported and 1030 were performed for the treatment of neurologic conditions. MS accounts for 96% of all diagnoses among neurologic indications for HSCT. Although the activity of HSCT for MS is low in the United States in relation to its prevalence, the number of transplants has increased in recent years. In contrast, Mexico has reported a sharp increase in the number of these transplants. This chapter provides an overview of the EBMT and CIBMTR registries, then offers the current status and publication outputs in relation to neurologic AD.