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MicroRNA Based Liquid Biopsy: The Experience of the Plasma miRNA Signature Classifier (MSC) for Lung Cancer Screening
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MicroRNA expression at diagnosis adds relevant prognostic information to molecular categorization in patients with

M Díaz-Beyá1, S Brunet2, J Nomdedéu3

  • 11] Hematology Department, Hospital Clinic, Institut d'Investigacions Bomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain [2] Josep Carreras Leukemia Research Institute (IJC), Barcelona, Spain.

Leukemia
|September 28, 2013
PubMed

Insights

Four microRNAs (miRNAs) show prognostic value in intermediate-risk acute myeloid leukemia (AML). Specific miRNA levels correlate with overall survival and relapse risk, aiding personalized treatment strategies for AML patients.

Area of Science:

  • Hematology
  • Molecular Biology
  • Oncology

Background:

  • Acute myeloid leukemia (AML) is a complex blood cancer with variable treatment outcomes.
  • Prognostic factors, including cytogenetics and molecular markers, are crucial for tailoring AML therapy.
  • MicroRNAs (miRNAs) are increasingly recognized for their role in AML pathogenesis and prognosis.

Purpose of the Study:

  • To investigate the association between miRNA expression and clinical outcomes in intermediate-risk cytogenetic AML (IR-AML).
  • To identify specific miRNAs that can serve as prognostic markers for IR-AML patients.

Main Methods:

  • miRNA expression profiling of 670 miRNAs in 85 IR-AML patients.
  • Validation of 10 candidate miRNAs in a larger cohort of 238 IR-AML patients using individual assays.
  • Statistical analysis to determine the independent prognostic impact of miRNAs on overall survival and relapse risk.

Main Results:

  • Ten outcome-related miRNAs were initially identified.
  • Four miRNAs (miR-196b, miR-644, miR-135a, and miR-409-3p) were confirmed as prognostic markers in the total cohort.
  • High miR-196b and miR-644 levels correlated with shorter overall survival.
  • Low miR-135a and miR-409-3p levels were associated with a higher risk of relapse.
  • Specific miRNAs retained prognostic value within distinct molecular subgroups (e.g., NPM1, CEBPA, FLT3-ITD status).

Conclusions:

  • miR-409-3p, miR-135a, miR-196b, and miR-644 are significant independent prognostic markers for IR-AML.
  • These miRNAs offer valuable prognostic information both overall and within specific molecular subgroups of IR-AML.
  • The findings support the use of these miRNAs in refining risk stratification and guiding treatment decisions for IR-AML patients.

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