Codanin-1 (CDAN1) is an essential and ubiquitous protein named after congenital dyserythropoietic anemia type I, an autosomal recessive disease that manifests from mutations in CDAN1 or CDIN1 (CDAN1 interacting nuclease 1). Here, CDIN1 is linked to Congenital dyserythropoietic anemia type I.