A double heterozygous hemoglobin. Hemoglobin OIndonesia and hemoglobin DPunjab in an individual.

During surveys for abnormal hemoglobins in Iran, an individual was found to have four electrophoretically distinct hemoglobins. The abnormality was found only in the father of the propositus, in two of the father's sisters, and in three brothers and sisters of the propositus. Investigations revealed that the four hemoglobin components are the result of a double heterozygosity between an alpha-chain variant (Hb OIndonesia) and a beta-chain variant (Hb DPunjab). The presence of the abnormal hemoglobins was not associated with hemolytic disorders or obvious clinical symptoms.