Sickle Cell Trait: A Benign State?

Area of Science:

• Hematology
• Genetics

Background:

• Sickle cell trait (SCT) is the heterozygous form of sickle cell disease.
• While generally considered benign, SCT has been controversially linked to various complications.

Purpose of the Study:

• To investigate the potential for other hemoglobinopathies to cause symptoms attributed to SCT.
• To emphasize the importance of comprehensive screening for co-existing conditions.

Main Methods:

• Review of patient investigations.
• Analysis of red cell indices and hemoglobin fractions.
• Consideration of DNA analysis for sickle cell gene presence.

Main Results:

• Beta thalassemia may be responsible for symptoms and complications ascribed to SCT.
• Patients may present with sickle cell beta thalassemia, a compound heterozygous state.

Conclusions:

• Screening for beta thalassemia is essential before attributing symptoms to SCT.
• Red cell indices and hemoglobin quantitation are vital diagnostic tools.
• DNA analysis alone is insufficient; exclusion of beta thalassemia mutations is necessary, considering geographical variations.