De novo <i>CIAS1</i> mutations, cytokine activation, and evidence for genetic heterogeneity in patients with neonatal‐onset multisystem inflammatory disease (NOMID): A new member of the expanding family of pyrin‐associated autoinflammatory diseases

Our data increase the total number of known germline mutations in CIAS1 to 20, causing a spectrum of diseases ranging from familial cold autoinflammatory syndrome to Muckle-Wells syndrome to NOMID/CINCA syndrome. Mutations in CIAS1 were only found in approximately 50% of the cases identified clinically as NOMID/CINCA syndrome, which raises the possibility of genetic heterogeneity. IL-1 regulation by CIAS1 suggests that IL-1 receptor blockade may constitute a rational approach to the treatment of NOMID/CINCA syndrome.