| Dravet syndrome | Fintepla | Orphan Designation | - |
| Lennox-Gastaut syndrome | Fintepla | Orphan Designation | - |
| Pitt-Hopkins syndrome | NAYZILAM | Orphan Designation | - |
| Spondyloenchondrodysplasia with immune dysregulation | Rozanolixizumab | Orphan Designation | - |
| acquired purpura fulminans | Rozanolixizumab | Orphan Designation | - |
| autoimmune thrombocytopenic purpura | Rozanolixizumab | Orphan Designation | - |
| childhood absence epilepsy | brivaracetam | Orphan Designation | - |
| chronic primary adrenal insufficiency | NAYZILAM | Orphan Designation | - |
| congenital myasthenic syndrome 3A | ZilbrysqRystiggo | Orphan Designation | - |
| congenital myasthenic syndrome 4C | ZilbrysqRystiggo | Orphan Designation | - |
| congenital myasthenic syndrome 5 | ZilbrysqRystiggo | Orphan Designation | - |
| congenital myasthenic syndrome 6 | ZilbrysqRystiggo | Orphan Designation | - |
| developmental and epileptic encephalopathy 119 | NAYZILAM | Orphan Designation | - |
| dihydropyrimidine dehydrogenase deficiency | Kygevvi | Orphan Designation | - |
| dihydropyrimidinuria | Kygevvi | Orphan Designation | - |
| early-onset partial cataract | BRIVIACTKEPPRA | - | FDA Approved |
| febrile seizures, familial | fenfluramine hydrochlorideFintepla | Orphan Designation | - |
| immunodeficiency 14 | seletalisib | Orphan Designation | - |
| juvenile absence epilepsy | brivaracetam | Orphan Designation | - |
| mitochondrial DNA depletion syndrome 1 | Kygevvi | Orphan Designation | - |
| mitochondrial DNA depletion syndrome, myopathic form | Kygevvi | Orphan Designation | - |
| mitochondrial neurogastrointestinal encephalomyopathy | Kygevvi | Orphan Designation | - |
| multiple congenital anomalies-hypotonia-seizures syndrome 1 | NAYZILAM | Orphan Designation | - |
| multiple congenital anomalies-hypotonia-seizures syndrome 2 | NAYZILAM | Orphan Designation | - |
| multiple congenital anomalies-hypotonia-seizures syndrome 3 | NAYZILAM | Orphan Designation | - |
| myasthenia gravis | ZilbrysqRystiggo | Orphan Designation | - |
| myasthenic syndrome, congenital, 1B, fast-channel | ZilbrysqRystiggo | Orphan Designation | - |
| neurodegeneration with developmental delay, early respiratory failure, myoclonic seizures, and brain abnormalities | KEPPRA | - | FDA Approved |
| pediatric acute-onset neuropsychiatric syndrome | Kygevvi | Orphan Designation | - |
| pediatric hepatocellular carcinoma | Kygevvi | Orphan Designation | - |
| pediatric ovarian dysgerminoma | Kygevvi | Orphan Designation | - |
| pediatric-onset Graves disease | Kygevvi | Orphan Designation | - |
| progressive supranuclear palsy | recombinant humanized IgG4P monoclonal antibody with specificity for human tau | Orphan Designation | - |
| progressive supranuclear palsy-corticobasal syndrome | recombinant humanized IgG4P monoclonal antibody with specificity for human tau | Orphan Designation | - |
| progressive supranuclear palsy-parkinsonism syndrome | recombinant humanized IgG4P monoclonal antibody with specificity for human tau | Orphan Designation | - |