Erythroleukemia Manifesting δβ-Thalassemia

Abstract
A 27-yr-old male with aplastic anemia developed a high fetal Hb, a low Hb A2, a decreased .beta./.alpha. synthetic ratio and an increased G.alpha./A.gamma. synthetic ratio. This acquired hemoglobinopathy resembling .delta..beta.-thalassemia was recognized at the onset of acute erythroleukemia. Certain features of this abnormal globin synthetic pattern resemble those of the normal fetus and, thus, appear to provide another example of gene expression by malignant cells resembling that of an earlier stage of the organism''s development.