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Study of Pancreatic Neuroendocrine Tumors and Carcinomas in Alsace Region

2019-10-28 13:57:22 | BioPortfolio

Summary

Pancreatic Neuroendocrine tumors and carcinomas (pNET) see the last year their incidence and prevalence going up. On the basis of their grade of differentiation and proliferation ratio measured Ki67 staining, there are divided into 3 grade groups : Grade 1 with Ki67 between 1 and 3%, Grade 2 between 3 and 20% and well-differentiated neuroendocrine grade tumors 3 with KI67 greater than 20%, so undifferentiated carcinomas.

pNET is a heterogenous group of tumors with variable prognosis. The aim of this study is to identify the prognostic factors in this population, as well the place of neutrophil-to-lymphocyte ratio as a prognostic marker. The primary endpoint is the description of clinic and pathological parameters of patients from Alsace. The secondary endpoints are the identification of prognostic factors in this population

Study Design

Conditions

Pancreatic Neuroendocrine Tumor

Location

Service D'Hematologie Et D'Oncologie
Strasbourg
France
67098

Status

Recruiting

Source

University Hospital, Strasbourg, France

Results (where available)

View Results

Links

Published on BioPortfolio: 2019-10-28T13:57:22-0400

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Medical and Biotech [MESH] Definitions

A group of carcinomas which share a characteristic morphology, often being composed of clusters and trabecular sheets of round "blue cells", granular chromatin, and an attenuated rim of poorly demarcated cytoplasm. Neuroendocrine tumors include carcinoids, small ("oat") cell carcinomas, medullary carcinoma of the thyroid, Merkel cell tumor, cutaneous neuroendocrine carcinoma, pancreatic islet cell tumors, and pheochromocytoma. Neurosecretory granules are found within the tumor cells. (Segen, Dictionary of Modern Medicine, 1992)

Tumors whose cells possess secretory granules and originate from the neuroectoderm, i.e., the cells of the ectoblast or epiblast that program the neuroendocrine system. Common properties across most neuroendocrine tumors include ectopic hormone production (often via APUD CELLS), the presence of tumor-associated antigens, and isozyme composition.

A benign tumor of the pancreatic ISLET CELLS. Usually it involves the INSULIN-producing PANCREATIC BETA CELLS, as in INSULINOMA, resulting in HYPERINSULINISM.

A 38-kDa integral membrane glycoprotein of the presynaptic vesicles in neuron and neuroendocrine cells. It is expressed by a variety of normal and neoplastic neuroendocrine cells and is therefore used as an immunocytochemical marker for neuroendocrine differentiation in various tumors. In ALZHEIMER DISEASE and other dementing disorders, there is an important synapse loss due in part to a decrease of synaptophysin in the presynaptic vesicles.

A 36-amino acid pancreatic hormone that is secreted mainly by endocrine cells found at the periphery of the ISLETS OF LANGERHANS and adjacent to cells containing SOMATOSTATIN and GLUCAGON. Pancreatic polypeptide (PP), when administered peripherally, can suppress gastric secretion, gastric emptying, pancreatic enzyme secretion, and appetite. A lack of pancreatic polypeptide (PP) has been associated with OBESITY in rats and mice.

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