. "A primary polycythemia characterized by high oxygen affinity hemoglobin and compensatory polycythemia that has_material_basis_in heterozygous mutation in HBB on chromosome 11p15.4."^^ . "familial erythrocytosis 6"^^ . "beta-globin type erythrocytosis"@en . "disease_ontology"^^ . "OMIM:617980"^^ . . "DOID:0111632"^^ . . "beta-globin type polycythemia"@en . "ECYT6"@en .