| A rare unclassified autoinflammatory syndrome characterized by neonatal onset pancytopenia, type I interferon-dependent multisystemic autoinflammation, painful rash with variable frequencies and hemophagocytic lymphohistiocytosis. Failure to thrive, fever, gastrointestinal/upper respiratory tract infections, enterocolitis, hepatosplenomegaly, myelofibrosis and neurodevelopmental delay are other common clinical features. Facial dysmorphism including macrocephaly, mild frontal bossing, sparse hair, mild hypertelorism, depressed nasal bridge can be present. |
