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Twenty-one Thai patients with beta-thalassemia/haemoglobin E and haemoglobin H diseases, 8-20-years-old, were studied. These patients had receive none or minimal blood transfusion. The important clinical endocrine abnormalities were growth retardation and sexual immaturity. GH secretion was found to be impaired in the majority of patients. Oral GTT showed chemical diabetes in one out of sixteen tests, a much lower incidence than in thalassaemic patients treated by hypertransfusion in the West. The mean insulin levels basally and after glucose loading were lower than those of the normal controls. Thyroid function was normal in all of the patients. Serum cortisol and 24-h urinary oxogenic steroids 917 OGS) levels were normal, as was adrenal cortical reserve in all the patients. The literature on endocrine function in in thalassaemia is reviewed.

The Inadequate metabolic and hypertension control, especially in type 2 patients, needs to be addressed.

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