Consensus for Flow Cytometry Clinical Report on Multiple Myeloma: A Multicenter Harmonization Process Merging...

Area of Science:

• Hematology
• Immunology
• Clinical Diagnostics

Background:

• Flow cytometry is crucial for distinguishing normal from clonal plasma cells in multiple myeloma.
• Established response criteria exist, but flow cytometry data reporting lacks standardization across centers.
• This variability can hinder consistent clinical interpretation and decision-making.

Purpose of the Study:

• To develop a uniform and shared reporting system for flow cytometry data in multiple myeloma.
• To identify essential data points for clinical reports through a collaborative, multi-stage process.
• To minimize subjective interpretation and potential bias in flow cytometry analysis.

Main Methods:

• A multicenter study involving 8 expert laboratories and 12 clinical hematology units.
• Utilized multiple-choice questionnaires to gather consensus on data reporting at each process stage.
• Established a 75% agreement threshold among laboratories for data inclusion in the final report.

Main Results:

• Achieved a consensus on essential data for flow cytometry reports in multiple myeloma.
• Defined a standardized process from pre-analytics to data evaluation.
• Ensured operational autonomy for participating laboratories while promoting uniformity.

Conclusions:

• The developed reporting system limits subjective interpretation and highlights potential biases.
• Standardized flow cytometry reporting enhances the reliability of clinical decision-making for plasma cell disorders.
• This collaborative effort provides a robust framework for consistent diagnostic evaluation.