Author of

• 20187

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  P3.08 - Locally Advanced Nsclc (ID 724)

  • Event: WCLC 2017
  • Type: Poster Session with Presenters Present
  • Track: Locally Advanced NSCLC
  • Presentations: 1
  • Moderators:
  • Coordinates: 10/18/2017, 09:30 - 16:00, Exhibit Hall (Hall B + C)

  • 24127

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    P3.08-005 - Hereditary Familial Overlap Syndrome with Multiple Synchronous Lung Tumors (ID 10257)

    09:30 - 09:30  |  Author(s): C. Navarrete
    • Abstract
    • Slides

    Background:
    Here we report the case of a young, never-smoker Hispanic woman with a hereditary familial overlap syndrome (Li-Fraumeni plus CDHI) who develop synchronous multiple primary lung adenocarcinomas related to Intra-alveolar Tumor Spread (STAS) several years after the diagnosis of a locally advanced lower limb osteosarcoma.
    
    Method:
    Comprehensive genomic profiling by next generation sequencing (NGS) was performed on 90 cancer-related genes over each lung lesion (including two nodules of acinar adenocarcina, one lepidic spread tumor and in STAS area). In the same way, the broad genomic analysis was performed in archival tissue from the previous bone tumor.
    
    Result:
    Lung tumors were found to harbor PI3KCA (invasive lesions) and a rare in-frame insertion of 6 amino acids in exon 19 of EGFR (lepidic tumor), STAS area showed KRAS and BRAF mutations in two different segments, and osteosarcoma tested positive for well known PIK3CA, KRAS and CDH1 alterations.
    
    Conclusion:
    This unique case raises practical questions as to the challenges of molecular testing and highlights the potential association of germline p53 and CDH1 mutations with concurrent somatic alterations that elucidate the basis of tumor heterogeneity. Figure 1
    
    
    
    

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