DO_rare_slim hemoglobin H disease An alpha thalassemia that has_material_basis_in contiguous gene deletion of the hemoglobin alpha-1 (HBA1) and alpha-2 (HBA2) genes on one chromosome 16, and a defect, deletional or nondeletional, in either HBA1 or HBA2 on the other. ORDO:93616 MIM:613978 DOID:0110031 HBH disease_ontology ICD10CM:D56.0 alpha thalassemia, haemoglobin H type alpha thalassemia, hemoglobin H type alpha-thalassemia intermedia haemoglobin H disease haemoglobin H disease, deletional hemoglobin H disease, deletional alpha thalassemia