Minimal/measurable residual disease in AML: a consensus document from the European LeukemiaNet MRD Working Party
Gerrit J Schuurhuis1, Michael Heuser2, Sylvie Freeman3
1Department of Hematology, VU University Medical Center, Amsterdam, The Netherlands.
Abstract:
Measurable residual disease (MRD; previously termed minimal residual disease) is an independent, postdiagnosis, prognostic indicator in acute myeloid leukemia (AML) that is important for risk stratification and treatment planning, in conjunction with other well-established clinical, cytogenetic, and molecular data assessed at diagnosis. MRD can be evaluated using a variety of multiparameter flow cytometry and molecular protocols, but, to date, these approaches have not been qualitatively or quantitatively standardized, making their use in clinical practice challenging. The objective of this work was to identify key clinical and scientific issues in the measurement and application of MRD in AML, to achieve consensus on these issues, and to provide guidelines for the current and future use of MRD in clinical practice. The work was accomplished over 2 years, during 4 meetings by a specially designated MRD Working Party of the European LeukemiaNet. The group included 24 faculty with expertise in AML hematopathology, molecular diagnostics, clinical trials, and clinical medicine, from 19 institutions in Europe and the United States.
Insights
Measurable residual disease (MRD) is a key prognostic indicator in acute myeloid leukemia (AML). Standardizing MRD measurement is crucial for improving risk stratification and treatment planning in AML patients.
Area of Science:
- Hematology
- Oncology
- Clinical Diagnostics
Background:
- Measurable residual disease (MRD) serves as an independent prognostic indicator in acute myeloid leukemia (AML).
- MRD assessment aids in risk stratification and treatment planning alongside diagnostic clinical, cytogenetic, and molecular data.
- Current MRD evaluation methods (flow cytometry, molecular assays) lack standardization, posing challenges for clinical application.
Purpose of the Study:
- To identify critical clinical and scientific issues related to MRD measurement and application in AML.
- To establish consensus on these issues among experts.
- To develop guidelines for the current and future clinical use of MRD in AML.
Main Methods:
- Convened a dedicated MRD Working Party under the European LeukemiaNet.
- Conducted 4 meetings over 2 years involving 24 faculty members.
- Included experts in AML hematopathology, molecular diagnostics, clinical trials, and clinical medicine from Europe and the US.
Main Results:
- Identified key challenges in the standardization of MRD measurement techniques.
- Achieved consensus on critical aspects of MRD assessment and clinical utility.
- Developed comprehensive guidelines for MRD's role in AML management.
Conclusions:
- Standardization of MRD measurement is essential for its reliable use in AML clinical practice.
- Established guidelines provide a framework for consistent MRD application in risk stratification and treatment decisions.
- Further research and collaboration are needed to refine and implement standardized MRD protocols in AML.
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