High-Throughput Immunogenetics for Clinical and Research Applications in Immunohematology: Potential and Challenges

Area of Science:

• Immunogenetics
• Molecular Biology
• Bioinformatics

Background:

• Conventional analysis of immunoglobulin (Ig) and T-cell receptor (TCR) gene rearrangements has inherent limitations in resolution, coverage, and bias.
• High-throughput, next-generation sequencing (NGS) technologies present an opportunity for more comprehensive IG/TR gene rearrangement analysis.

Purpose of the Study:

• To bridge the gap between low-throughput and high-throughput IG/TR analysis by developing, standardizing, and validating NGS assays.
• To address key applications including clonality assessment, minimal residual disease detection, and repertoire analysis.
• To critically evaluate the pitfalls and challenges associated with IG/TR NGS methodology.

Main Methods:

• Development and standardization of a comprehensive IG/TR NGS workflow.
• Inclusion of preanalytical (sample preparation, target selection), analytical (amplification, sequencing), and postanalytical (immunoinformatics) phases.
• Validation of the standardized NGS methodology for immunogenetic applications.

Main Results:

• Establishment of a standardized workflow for IG/TR gene rearrangement analysis using NGS.
• Demonstration of improved resolution, coverage, and reduced bias compared to conventional methods.
• Identification of critical challenges and pitfalls in IG/TR NGS implementation.

Conclusions:

• NGS technology significantly enhances IG/TR immunogenetic analysis, impacting clonality assessment, MRD detection, and repertoire studies.
• Standardization and validation are crucial for reliable IG/TR NGS assays.
• Addressing methodological challenges is key to fully realizing the potential of IG/TR NGS in hemato-oncology and immunology.