NCIt definition : A condition characterized by the presence of a variant of normal hemoglobin (hemoglobin
E), which is caused by mutation(s) in the gene encoding the beta subunit of the hemoglobin
molecule.;
Alternative definition : NICHD: An autosomal recessive disorder resulting from the production of hemoglobin
E, secondary to an amino acid substitution of lysine for glutamic acid in the twenty-sixth
position of the beta chain (E26K), and characterized by mild hemolytic anemia and
possible splenomegaly.;