A familial disorder characterized by ANEMIA with multinuclear ERYTHROBLASTS, karyorrhexis, asynchrony of nuclear and cytoplasmic maturation, and various nuclear abnormalities of bone marrow erythrocyte precursors (ERYTHROID PRECURSOR CELLS). Type II is the most common of the 3 types; it is often referred to as HEMPAS, based on the Hereditary Erythroblast Multinuclearity with Positive Acidified Serum test.

Synonyms: Anemia With Multinucleated Erythroblasts, HEMPAS Anemias, Congenital Dyserythropoietic Anemias, Anemia, Dyserythropoietic, Congenital, Hereditary Erythroblast Multinuclearity with Positive Acidified Serum, Dyserythropoietic Anemia, Congenital, Type III, Dyserythropoietic Anemias, Congenital, Dyserythropoietic Anemia, Congenital, HEMPAS Anemia, Congenital Dyserythropoietic Anemia Type II, Anemia, Congenital Dyserythropoietic, Type II, Anemia, Congenital Dyserythropoietic, Anemia, Dyserythropoietic, Congenital, Type III, Dyserythropoietic Anemia, HEMPAS Type, Type I Congenital Dyserythropoietic Anemia, Anemia, Dyserythropoietic Congenital, Type III, Anemia, Dyserythropoietic, Congenital, Type I, HEMPAS, Congenital Dyserythropoietic Anemia Type 1, Congenital Dyserythropoietic Anemia, Anemia, Dyserythropoietic Congenital, Type II, Dyserythropoietic Anemia, Congenital, Type I, Dyserythropoietic Anemia, Congenital Type 2, Dyserythropoietic Anemia, Congenital Type 1, Anemia, Dyserythropoietic, Congenital Type 2, Anemia, Dyserythropoietic, Congenital, Type II, Anemia, Dyserythropoietic, Congenital Type 1, Anemias, Congenital Dyserythropoietic, Congenital Dyserythropoietic Anemia, Type III, Dyserythropoietic Anemia, Congenital, Type II, Hereditary Erythroblastic Multinuclearity with Positive Acidified-Serum Test, Anemia, Dyserythropoietic Congenital, Type I, Congenital Dyserythropoietic Anemia, Type I