Update on thalassemia diagnosis: New insights and methods

Area of Science:

• Biomedical Engineering
• Analytical Chemistry
• Hematology

Background:

• Thalassemia diagnosis relies on Complete Blood Count (CBC) and Red Blood Cell (RBC) indices, which may not always differentiate subtypes effectively.
• Existing diagnostic methods can be limited in distinguishing between various thalassemia severities.

Purpose of the Study:

• To introduce and evaluate a novel diagnostic approach for thalassemia using Thermogravimetric Analysis coupled with Chemometrics (TGA/Chemometrics).
• To compare the efficacy of TGA/Chemometrics against traditional CBC and RBC indices in diagnosing and classifying thalassemia.
• To identify key hematological features significant for thalassemia diagnosis.

Main Methods:

• A cohort of 128 subjects, including healthy donors and patients with Thalassemia Intermedia (transfusion-dependent and non-transfusion-dependent) and Thalassemia Major, were analyzed.
• Thermogravimetric Analysis (TGA) was performed on blood samples, followed by Chemometric analysis to interpret thermal behavior patterns.
• Complete Blood Count (CBC) and Red Blood Cell (RBC) indices were also evaluated for comparison.

Main Results:

• Thalassemic patients exhibited distinct thermal behavior compared to healthy donors, enabling clear differentiation.
• The TGA/Chemometrics approach achieved a 100% correct classification rate for thalassemia diagnosis.
• Chemometric analysis identified Red Cell Distribution Width (RDW), Hemoglobin (Hb), and RBC count as key diagnostic markers, outperforming MCV and MCH in differentiating subtypes.

Conclusions:

• TGA/Chemometrics offers a highly accurate and effective method for thalassemia diagnosis and subtyping.
• This novel approach surpasses conventional CBC and RBC indices in distinguishing between different thalassemia patient groups.
• The study provides new insights into hematological features crucial for updating thalassemia classification systems.