Different Types of Beta-Thalassemia Intermedia

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Abstract
20 patients with β-thalassemia intermedia classified according to the results of genetic studies are presented. (1) 9 patients with β-thalassemia intermedia homozygous for β-thalassemia with increased Hb-A2 are reported. (2) 8 patients with β-thalassemia intermedia, 3 homozygous for β-thalassemia with normal levels of Hbs.A2 and F, 5 heterozygous for both this and β-thalassemia with increased Hb-A2 are presented. (3) 2 families with β-thalassemia intermedia heterozygous for both β-thalassernia with increased Hb-A2 and ‘silent’ β-thalassemia are reported. Two different varieties are presented.