Abnormal Erythrocyte Morphology Abnormal Hemoglobin Suggest HPO to update their term description and to move terms related to hemoglobin concentration below "Abnormal Hemoglobin Concentration". Include as a sub-class "Hemoglobin S-Providence"? Suggest update to description Abnormal Variant of Hemoglobin Abnormal Hemoglobins Abnormal Hemoglobin Variant Hemoglobin characterized by structural alterations within the molecule that confer an inherited health condition phenotype. The alteration can be either absence, addition or substitution of one or more amino acids in the globin part of the molecule at selected positions in the polypeptide chains. Hemoglobin Variant