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