RAS-associated autoimmune leukoproliferative disease (RALD) is a rare genetic disorder characterized by monocytosis, autoimmune cytopenias, lymphoproliferation, hepatosplenomegaly, and hypergammaglobulinemia. The disease is autoimmune lymphoproliferative syndrome type 4 (MONDO_0013767, a Monarch Disease Ontology entry). Also known as: ALPS type 4, ALPS type IV, ALPS4, NRAS autoimmune lymphoproliferative syndrome, RALD, RAS-associated autoimmune leukoproliferative disease, RAS-associated autoimmune leukoproliferative disorder, RAS-associated autoimmune lymphoproliferative syndrome type IV, somatic.