Author of

• 17398

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  P2.01 - Poster Session with Presenters Present (ID 461)

  • Event: WCLC 2016
  • Type: Poster Presenters Present
  • Track: Biology/Pathology
  • Presentations: 1
  • Moderators:
  • Coordinates: 12/06/2016, 14:30 - 15:45, Hall B (Poster Area)

  • 17406

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    P2.01-008 - SiRe Next Generation Sequencing Panel: Effective Diagnostic Tool for Circulating Free DNA Analysis (ID 5624)

    14:30 - 14:30  |  Author(s): A. Martinez-Bueno
    • Abstract

    Background:
    Tissue availability is a crucial point in NSCLC. The introduction of Liquid Biopsies allows to determine circulant biomarkers, specifically using free DNA. To simultaneously analyze multiple patients sample at high sensitivity, Next Generation Sequencing (NGS) can be narrowed to target a limited number of actionable genes. Here we prospectically applied a lab-developed narrowed gene panel (SiRe) to produce a DNA library covering 568 actionable mutations in six gene (EGFR, KRAS, NRAS, BRAF, cKIT and PDGFRα).
    
    Methods:
    This daily clinical practice study was performed on cfDNA obtained from Non Small Cell Lung Cancer blood samples (serum and plasma) prospectically collected either prior to treatment administration in patients without tissue availability (n = 46) or after a progressive disease (n = 19) from a first line gefitinib (n = 14) or afatinib (n = 5) therapy.
    
    Results:
    SiRe detected an activating EGFR mutation in 4/46 (8.9%) cases and in T790M in 9/19 (47.4%) at the time of tumor progression. Using tissue data as gold standard, the SiRe panel showed a sensibility of 90.5% and specificity of 100%.
    
    Conclusion:
    The SiRe panel is an effective tool enabling the implementation of NGS for cfDNA mutational profiling in molecular pathology practice.