causes condition has contributing genetic variation causes molecular phenotype Hemoglobin D Disease Genotype Hemoglobin D HBB, SER9TYR HBB, GLU121GLN HBB, GLY16ARG HBB, ASN19LYS HBB, GLU22GLN HBB, GLU22VAL HBB, THR87LYS HBB, GLU121ALA Hemoglobin Genotype DD Haemoglobin Genotype DD SCDO (Jade Hotchkiss) DD Genotype The homozygous genotype that involves a hemoglobin D mutation in both beta-globin gene (HBB) alleles. Hemoglobin C Genotype Request inclusion into relevant ontology DD Hemoglobin Genotype None