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Brief Title: Molecular Signature From Tumor to Lymph Nodes
Official Title: Molecular Signature From Tumor to Lymph Nodes: How to Identify the Right Candidate for IIIA-N2 Lung Cancer Surgery?
Study ID: NCT04677205
Brief Summary: Mediastinal lymph node (LN) involvement (N2) in non-small cell lung cancer (NSCLC) concerns 15% of resectable tumors and is associated with a poor prognosis and an overall survival reaching 9 to 49%. Literature fails to provide any definitive consensus regarding the management of these patients, except for the platinum-based doublet chemotherapy. The N2 involvement remains a matter of debate because of its not yet well-classified heterogeneity. Regarding anatomy, the Mountain and Dresler's regional LN classification for lung cancer staging remains the reference. Different studies classified IIIA-N2 disease into 4 groups, in addition to the skip-N2 phenomenon: minimal-N2, N2 single station, N2 multiple stations, and bulky-N2. Other subgroups were recently proposed for the 8th edition of the TNM: N2a1 - single station skip, N2a2 - single station non-skip, N2b - multiple stations. The French National Cancer Institute (INCa) proposed guidelines, but in case of cN2 staging without mediastinal infiltration, guidelines remained imprecise ("resectability should be discussed for each case") and suggested surgery first, or induction chemotherapy, or concomitant chemoradiation. Thus, optimal management of cIIIA-N2 remains controversial but complete tumor resection can be related to long-term survival in some patients, including 10 years after surgery \[1\]. In this situation, the identification of markers that will help select IIIA-N2 patients who will benefit from surgical resection is mandatory.
Detailed Description: We planned a comprehensive molecular characterization of tumors and lymph nodes to evaluate the impact of molecular signatures and molecular heterogeneity on disease-free survival after surgery in IIIA-N2 NSCLC patients. Identification of specific molecular profiles in primary tumors and evolution profiles in nodes might provide clues to the potential risk of metastatic evolution and trigger specific management. For patients included prospectively, we planned to analyze cell free circulating tumor DNA (ctDNA) as prognostic marker. Because multiple biopsies are not always available in care settings, ctDNA could also be analyzed as a surrogate marker of molecular heterogeneity. Next generation sequencing (NGS) that was validated in our lab to screen ctDNA using a specific bio-informatics workflow allows accurate and cost effective ctDNA screening
Minimum Age: 18 Years
Eligible Ages: ADULT, OLDER_ADULT
Sex: ALL
Healthy Volunteers: No
H么pital du Haut-L茅v锚que, CHU de Bordeaux, Bordeaux, , France
H么pital Militaire Percy, Clamart, , France
H么pital Nord, Marseille, , France
H么pital Pasteur, CHU de Nice, Nice, , France
Hegp-Aphp, Paris, , France
H么pital Europ茅en Georges-Pompidou, Paris, , France
H么pital Bichat, Paris, , France
H么pital Cochin, Paris, , France
H么pital Pontchaillou, CHU de Rennes, Rennes, , France
H么pitaux universitaires de Strasbourg, Strasbourg, , France
H么pital Larrey, CHU de Toulouse, Toulouse, , France
CHRU de Tours, Tours, , France
Name: Helene BLONS, PharmD PhD
Affiliation: H么pital Europ茅en Georges-Pompidou
Role: PRINCIPAL_INVESTIGATOR