| NMO | neuromyelitis optica |
| NMOSD | neuromyelitis optica spectrum disorders |
| CNS | central nervous system |
| HSCT | hematopoietic stem cell transplantation |
| AQP4 | aquaporin-4 |
| CSF | cerebrospinal fluid |
| MOG-Ab | myelin oligodendrocyte glycoprotein antibody |
| BBB | the blood–brain barrier |
| GM-CSF | granulocyte-macrophage colony-stimulating factor |
| LETM | longitudinally extensive transverse myelitis |
| MRI | magnetic resonance imaging |
| AZA | azathioprine |
| MMF | mycophenolate mofetil |
| RTX | rituximab |
| FDA | Food and Drug Administration |
| EMA | European Medicine Agency |
| HR | hazard ratio |
| AuHSCT | autologous HSCT |
| AlHSCT | allogeneic HSCT |
| HSCs | hematopoietic stem cells |
| GVHD | graft versus host disease |
| TRM | transplant-related mortality |
| EAE | experimental autoimmune encephalomyelitis |
| TBI | total body irradiation |
| Cy | cyclophosphamide |
| MS | multiple sclerosis |
| ATG | antithymocyte globulin |
| EDSS | Expanded Disability Status Scale |
| OSMS | opticospinal multiple sclerosis |
| EBMT | European Group for Blood and Marrow Transplantation |
| AID | autoimmune diseases |
| HLA | human leukocyte antigen |
| MFD | matched family donor |
| MUD | matched unrelated donors |
| Flu | fludarabine |
| Threo | threosulfan |
| VOD | veno-occlusive-disease |