Autoinflammatory-pancytopenia syndrome due to DNASE2 deficiency

An autosomal recessive disorder characterized by severe anemia and thrombocytopenia apparent from early infancy, hepatosplenomegaly, and recurrent fevers associated with a hyperinflammatory state. Additional systemic features may include chronic diarrhea, proteinuria with renal disease, liver fibrosis with elevated liver enzymes, deforming arthropathy, and vasculitic skin lesions. Some patients may have motor delay or learning difficulties associated with subcortical white matter lesions on brain imaging. Laboratory studies show increased levels of proinflammatory cytokines and increased expression of interferon-stimulated genes (ISGs), consistent with a type I interferonopathy.