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Fluorescent Sentinel Lymph Node Identification in Colon Carcinoma Using Submucosal Bevacizumab-800CW.

ABSTRACT: This prospective study aims to assess the safety and feasibility of lymph node identification using bevacizumab-800CW in patients with cT1-3N0-2 tumours, using peritumoral submucosal injections

DISEASE(S): Sentinel Lymph Node,Colon Cancer,Fluorescence,Colorectal Neoplasms,Colon Carcinoma,Colon Carcinoom,Colonic Neoplasms,Neoplasms

PROVIDER: 2744959 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Fluorescent Sentinel Lymph Node Identification in Colon Carcinoma Using Intravenous Bevacizumab-800CW

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Gene Expression Profiling of Fixed Tissues of Lymph Node Metastasis in Hepatocellular Carcinoma

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Gene Expression Profiling of Fixed Tissues of Lymph Node Metastasis in Hepatocellular Carcinoma

2011-08-04 | GSE28248 | GEO

Gene expression profiles of tumor-positive sentinel lymph node biopsies from cutaneous melanoma patients

Project description:Sentinel lymph node, the first node draining the primary tumor, is a key component of tumor microenvironment promoting immune tolerance. In melanoma, sentinel node is one of the most important prognostic factors and the most frequent site of regional metastasis. To unravel the immunomodulatory pathways that are triggered by melanoma cells in the draining node that allow tumor spreading, transcriptional profiles associated to disease progression were analyzed in archival sentinel node biopsies (SNB). Gene expression profiles of melanoma-positive and negative SNB selected to maximize the differences in terms of disease stage and course, revealed subgroups correlating with regional node involvement and disease progression within positive biopsies. Transcriptional profiles revealed that genes showing differential expression between tumor-positive SNB with/without disease progression were mainly related to inflammatory response and that were mostly down regulated in patients with poor prognosis. TNFRSF8 encoding CD30 showing up regulation in SNB from patients with progressing disease displayed higher expression by immunohistochemical staining compared to SNB from non progressing patients. Subpopulations of CD30 positive CD4/CD8 double negative and CD4 Foxp3/PD-1 CD147 positive T cells were identified by flow cytometry analysis in metastatic nodes, suggesting a potential role of regulatory and tolerogenic T cells in melanoma progression.

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Lymphatic mapping for sentinel node identification

Project description:Primary objectives: The main objective of this study is to determine whether the first (sentinel) lymph nodes in the drainage pathway of a colonic tumour can be detected at the time of surgery using a new technique. The detection method is to inject a fluorescent dye (indocyanine green) into the colon adjacent to the tumour. The dye will then be seen as it fluoresces in the light from the near infrared spectrum that can be used at the time of the laparoscopic (keyhole) surgery. An endoscope is placed in the colon (colonoscopy) during surgery and the tracer fluorescent agent is injected around the tumour. The mesentery in which the lymph nodes draining the tumour are located will then be examined by laparoscopy and it is expected that fluorescence will be identified within approximately 5 minutes of the injection. The first lymph node or nodes that take up the fluorescent dye will then be marked by placing a clip or a stitch by them. After the surgery has been completed and colon removed, all lymph nodes w Primary endpoints: To establish whether it is possible to identify the first order draining mesocolic lymph nodes (sentinel lymph node(s) (SLNs) in patients with suspected T1 and T2 colonic cancer, using ICG, a fluorescent mapping agent, and a laparoscopic near infrared imaging (NIR) system.

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