Thyroid Status in Children with Transfusion Dependent Hb-E β-Thalassaemia

Area of Science:

• Pediatrics
• Endocrinology
• Hematology

Background:

• Multi-endocrine dysfunction is a common complication in thalassemia patients.
• Iron overload and chronic tissue hypoxia are suspected causes of thyroid dysfunction.

Purpose of the Study:

• To evaluate the thyroid status in children with Hb-E beta-thalassemia.
• To investigate the correlation between thyroid dysfunction, iron status, and hemoglobin levels.

Main Methods:

• A cross-sectional study involving 50 children with Hb-E beta-thalassemia and a comparison group.
• Thyroid function tests (TSH & FT4), serum ferritin levels, and pre-transfusion hemoglobin levels were measured.

Main Results:

• 26% of Hb-E beta-thalassemia patients had subclinical hypothyroidism, significantly higher than the 2.5% in the comparison group.
• Subclinical hypothyroidism showed a significant correlation with lower pre-transfusion hemoglobin levels (p=0.02).
• No significant correlation was found between subclinical hypothyroidism and serum ferritin levels.

Conclusions:

• Subclinical hypothyroidism is common in children with transfusion-dependent Hb-E beta-thalassemia.
• Thyroid dysfunction in these patients is associated with anemia rather than iron overload.