Haemoglobin E trait and probable alpha-thalassaemia in a black American family: a family study.

This is a report of haemoglobin E trait in a black American family with no known Asian ancestory. The father appears to be heterozygous for both haemoglobin E and alpha-thalassaemia. The mother is normal both clinically and haematologically. These children carry Hb E trait alone. The youngest son has a normal haemoglobin pattern and appears to have alpha-thalassaemia.