According to this study, more than half of children with the beta (β)-thalassemia trait and iron deficiency had hemoglobin A2 (HbA2) levels in the diagnostic range, supporting the potential of ...

Thalassemia ... alpha-globin Severity: Depends on how many of the four alpha-globin genes are affected One gene mutated: Silent carrier Two genes mutated: Alpha thalassaemia trait (mild anemia ...