Iron stores and iron deficiency anemia in children heterozygous for beta-thalassemia

Area of Science:

• Hematology
• Genetics
• Pediatrics

Background:

• Beta-thalassemia trait affects iron metabolism and red blood cell production.
• Understanding iron status in children with beta-thalassemia trait is crucial for diagnosis and management.

Purpose of the Study:

• To investigate iron stores, incidence of iron deficiency anemia, and hematological characteristics in children heterozygous for beta-thalassemia.
• To compare iron status and anemia development between children with and without beta-thalassemia trait.

Main Methods:

• Assessment of iron stores.
• Evaluation of iron deficiency anemia incidence.
• Hematological analysis including HbA2 levels.
• Comparison with age-matched healthy controls.

Main Results:

• Children with beta-thalassemia trait had similar iron stores to controls in infancy, increasing with age, with moderate overload in adult males.
• Iron deficiency anemia was less frequent in children with beta-thalassemia trait compared to controls.
• Despite protection against iron deficiency, anemia in these children was more severe at similar iron depletion levels.
• HbA2 levels remained within the beta-thalassemia trait range even with iron deficiency anemia.

Conclusions:

• Children heterozygous for beta-thalassemia have normal iron stores and are relatively protected against iron deficiency.
• Iron deficiency anemia, when it occurs in this group, presents with more severe clinical manifestations than in non-thalassemic children.