Hematological and hemoglobin synthesis studies in a family with deltabeta-thalassemia trait.

A Basque Spanish family with heterozygous deltabeta-thalassemia is described. Patients with this anomaly usually present hematological findings observed in classical beta-thalassemia, but clinical conditions and unbalanced chain synthesis are less severe. Our propositus, however, presented clinical and biosynthetic data similar to those described in thalassemia intermedia. A family study was also performed.