Preferred Label : Sickle Cell-Hemoglobin D Disease;
NCIt synonyms : Hemoglobin SD Disease;
NCIt definition : A variant of sickle cell disease due to heterozygosity for hemoglobin S and hemoglobin
D mutations. Patients present with the symptoms of sickle cell disease but the symptoms
are less frequent and severe compared to patients with hemoglobin SS disease.;