Read the clonotype: Next-generation sequencing-based lymphocyte clonality analysis and perspectives for application...

Area of Science:

• Hematology
• Molecular Biology
• Oncology

Background:

• Clonality assessment of immunoglobulin (IG) and T-cell receptor (TR) genes is crucial for diagnosing B-cell and T-cell lymphomas.
• Conventional fragment analysis methods for clonality testing have limitations in sensitivity and precision.

Purpose of the Study:

• To develop and validate a next-generation sequencing (NGS)-based clonality assay for IG and TR gene rearrangements.
• To enhance sensitivity and precision in clone detection and comparison compared to traditional methods.

Main Methods:

• Development and validation of an NGS-based assay for IG heavy and kappa light chain, and TR gene rearrangements.
• Application of the assay to formalin-fixed and paraffin-embedded tissues.

Main Results:

• The NGS-based assay provides more sensitive detection of lymphocyte clones.
• It allows for more precise comparison of clones than conventional fragment analysis.

Conclusions:

• NGS-based clonality testing is a powerful tool for diagnosing lymphomas.
• Potential applications include site-specific lymphoproliferations, immunodeficiency, autoimmune diseases, and monitoring primary and relapsed lymphomas.