Sickle-cell trait: novel clinical significance

Area of Science:

• Hematology
• Genetics
• Sports Medicine

Background:

• Sickle-cell trait (SCT) is often detected via neonatal screening for sickle-cell disease.
• There is ongoing debate regarding whether SCT represents a benign carrier state or an intermediate disease phenotype.
• Recent recommendations for athlete screening by the NCAA highlight the need for clarity on SCT's implications.

Purpose of the Study:

• To address the controversy surrounding the classification of sickle-cell trait.
• To review emerging information on SCT complications, specifically venous thromboembolism and renal manifestations.
• To provide evidence-based guidance for medical advice and screening protocols concerning SCT.

Main Methods:

• Literature review of reported complications associated with sickle-cell trait.
• Focus on recent findings regarding venous thromboembolism and renal manifestations in individuals with SCT.
• Analysis of the implications for neonatal and selective post-neonatal screening.

Main Results:

• Emerging data suggests SCT may be associated with significant health complications.
• Specific focus on increased risk for venous thromboembolism and renal abnormalities in SCT individuals.
• The review synthesizes current knowledge to inform the debate on SCT classification.

Conclusions:

• Consensus on SCT classification is crucial for accurate medical counseling.
• Evidence supports considering SCT beyond a benign carrier state due to potential complications.
• Further research and clear guidelines are needed for managing individuals with SCT, particularly athletes.