| CNS | central nervous system |
| CSF | cerebrospinal fluid |
| CT | cerebrospinal fluid |
| CTLA-4d | CTLA-4 deficiency |
| IEI | inborn errors of immunity |
| IV | intravenous |
| MRI | magnetic resonance imaging |
| MS | multiple sclerosis |
| NGS | next generation sequencing |
| PET | positron-emission tomography |
| VUS | variant of unknown significance |
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