Our project, established through collaboration between clinicians (Oscar Lambret Center-University Hospital) and scientists (IBL), aims to evaluate the expression of Met fragments in the lung cancer (LC). Unlike previous studies on Met by sequencing, in situ hybridization or immunohistochemistry, the investigators propose a protein analysis by Western blot of tumor samples and healthy tissue. This approach will evaluate the expression of full-length receptor, the potential presence of intracellular fragments, and their phosphorylation status.
* Patient information and collection of signed inform consent * Blood sample collection before bronchoscopy or before surgery, at the same time as a usual blood assessment. * Prospective collection of bronchial biopsies of patients with metastatic non small cell lung cancer, during a bronchoscopy at the Oscar Lambret Center (Dr Dansin) * Prospective collection of resected specimens of patients with localized non small cell lung cancer, who were operated at the thoracic surgery unit of the University hospital (Pr Porte) * Transportation of the samples to the pathology laboratories (Dr Robin, Pr Copin) * Selection of blocks of interest and preparation of tumor samples * Clinical data collection : date of biopsy or surgery, disease-free survival, overall survival, tumor characteristics, EGFR status, ALK, BRAF, HER2 * Transportation of tumor blocks and blood samples to the Institute of Biology of Lille for analyses: Western blot, immunohistochemistry and ELISA test) * Return to storage of the tumor samples at the Oscar Lambret Center and at the University hospital of Lille
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
56
10 mL of blood and 4 pieces of tissue (2 of tumor tissue, 2 of healthy tissue) all taken at the same time as surgery or bronchoscopy, depending on the stage of the disease
Centre Hospitalier Régional et Universitaire
Lille, France
Oscar Lambret Center
Lille, France
Expression and localization of Met C-terminal active fragments in NSCLC
Western Blot and immunohistochemistry
Time frame: baseline
Evaluation of the activation of Met receptor
Activation of Met receptor by immunochemical analysis (Western Blot)
Time frame: baseline
Correlation between expression of Met receptor fragments with clinical characteristics and/or prognosis factors as sex, TNM, EGFR status, histology, smoking status, survival
Relationships between Met receptor expression and sex, TNM, EGFR status, histology, smoking status, survival
Time frame: baseline
Expression in plasma of N-terminal Met fragments
ELISA test
Time frame: baseline
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