NCIt definition : An autosomal dominant inherited disorder characterized by the presence of smaller
than normal, sphere-shaped erythrocytes. It results in hemolytic anemia and splenomegaly.;
Alternative definition : NICHD: An autosomal dominant inherited disorder characterized by the presence of smaller
than normal, sphere-shaped erythrocytes, resulting in hemolytic anemia and splenomegaly.
Mutations in ANK1 account for over half of the cases.;