Introduction

Diagnosing the cause of elevated red blood cell counts is often a complex task for hematologists. While common causes like polycythemia vera are frequently identified, many cases remain idiopathic. However, a recent study highlights the effectiveness of the hereditary erythrocytosis NGS panel in these challenging scenarios. By using advanced sequencing, clinicians can now identify genomic variants that were previously undetectable through traditional methods. This transition to genomic screening offers hope for patients with lifelong unexplained high hemoglobin levels.

Diagnostic Yield of the Hereditary Erythrocytosis NGS Panel

The study focused on adults with otherwise unexplained erythrocytosis who tested negative for primary JAK2 mutations. Moreover, researchers employed a comprehensive gene panel to screen for rare hereditary factors. Consequently, the results revealed a significantly higher diagnostic yield compared to sequential single-gene testing. Furthermore, the analysis identified novel variants in genes associated with oxygen sensing and erythropoiesis. Therefore, this technology provides a more efficient and accurate pathway to a definitive diagnosis. Additionally, the study found that many patients carry variants of uncertain significance that require further functional investigation.

Clinical Implications for Hematology

Identifying these specific variants helps clinicians distinguish between hereditary and acquired forms of the disease. This distinction is crucial because it prevents unnecessary or potentially harmful treatments. Finally, the study underscores the importance of integrating genomic screening into standard diagnostic algorithms. As a result, patients with persistent, unexplained high hemoglobin levels should consider this targeted genetic approach. Moving forward, the widespread adoption of these panels may redefine the management of idiopathic erythrocytosis in clinical practice.

Frequently Asked Questions

What genes are included in a hereditary erythrocytosis NGS panel?

These panels typically include genes such as EPO, EPAS1, VHL, EGLN1, and PIEZO1, which are involved in the body's oxygen-sensing and red blood cell production pathways.

Why is NGS preferred over Sanger sequencing for erythrocytosis?

NGS is preferred because it allows for the simultaneous analysis of multiple genes. This method is faster and more cost-effective than testing one gene at a time, particularly when searching for rare or novel mutations.

Disclaimer: This content is for informational and educational purposes only. It does not constitute medical advice or a professional relationship. Refer to the latest local and national guidelines for clinical practice.

References

Rezasoltani M et al. Next generation sequencing panel for hereditary erythrocytosis in adults with otherwise unexplained erythrocytosis unveils additional genomic variants. Haematologica. 2026 Mar 26. doi: 10.3324/haematol.2026.300545. PMID: 41885015.

Camps C et al. Gene panel sequencing improves the diagnostic work-up of patients with idiopathic erythrocytosis and identifies new mutations. Haematologica. 2016;101(11):1306-1318.

McMullin MF. Investigation and Management of Erythrocytosis. Curr Hematol Malig Rep. 2016;11(5):342-347.