Hematopoietic Stem Cell Transplantation for Treatment of Multiple Sclerosis in Sweden

All individuals with a diagnosis of MS, who was treated with AHSCT in Sweden until 31 December 2019 can be included in this study. Patients will be identified through the European Bone and Marrow Transplantation register (EBMT) and the Swedish MS register (SMSreg). Baseline data will be collected from the SMSreg. Data concerning AHSCT will be collected from local repositories of the EBMT and supplemented by data obtained by reviewing of medical records. This includes data such as doses and names of drugs used for mobilization and conditioning, dates for administration of these drugs, date of hematopoietic stem cell transplantation, date of hematological milestones, occurrence and grading of adverse events during the first three months after the intervention. Data on clinical outcome after the first three months of the intervention will be collected from SMSreg. Data on vital status will be collected from medical records at the end of study. Any recorded deaths will be analyzed through the medical records to determine if it was treatment-related. The endpoints will be analysed and described for the whole study cohort. A subgroup analysis comparing the outcome of patients treated with different conditioning regimens (e.g. BEAM-ATG and Cy-ATG) will be included in this study.