Abstract Library

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#4027 Prognostic impact of molecular signatures in pancreatic metastatic neuroendocrine tumors (PRODETEN)

Introduction: Pancreatic neuroendocrine neoplasms (PNENs) are an heterogenous group of tumors. This heterogeneity is not explained by the main known prognostic factors (extension, evolution slope and Ki67 index). New molecular biomarkers (ARX, ATRX, DAXX, menin, PDX1) seem promising in non-metastatic PNENs.

Conference:

Presenting Author: de Mestier L

Authors: Pokossy Epee J, Cros J, Cadiot G, Do Cao C, Hautefeuille V,

Keywords: pancreas, neuroendocrine, prognostic, ATRX, daxx, arx, pdx1, Super Learner, menin, biomarker,

#3072 Rb and p53 Status Determination by Immunochemistry Is Complementary in Routine Practice to Genetic Testing of Neuroendocrine Neoplasms

Introduction: Rb and p53 status may help distinguishing well from poorly differentiated neuroendocrine neoplasms (NEN) and may predict response to chemotherapy. Studies correlating Rb/p53 genetic and immunohistochemistry were performed on high-quality frozen samples with high throughput techniques efficient for copy number determination. This situation differs from routine practice in which small deletions may be hard to detect on formalin-fixed paraffin-embedded (FFPE) samples with a gene panel approach.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Cros J

Authors: Chen R, Lacroix L, De Rycke O, Lacombe C, Cazes A,

Keywords: rb, p53, aggressive neuroendocrine tumors, biomarker,

#2904 Prognosis and Management of Advanced Digestive Well-Differentiated Grade 3 Neuroendocrine Tumors (G3 NETs): A NET-CONNECT Study Performed in Four Expert Centers

Introduction: G3 NETs are rare tumors with poorly defined prognosis and management.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: de Mestier L, Lamarca A, Hernando-Cubero J, Alonso Gordoa T, Cros J,

Keywords: grade 3, prognosis, treatment, alkylating agents,

#2874 Role of FOXM1 in Aggressive Pancreatic / Pulmonary Neuroendocrine Carcinomas and Anti-Tumor Effect of the FOXM1 Inhibitor Thiostrepton

Introduction: DNA-targeting agents are the main treatment of aggressive pulmonary and pancreatic neuroendocrine carcinomas (NEC). FOXM1 is a transcription factor controlling cell proliferation and DNA repair pathways, playing therefore an important role in tumor progression and chemoresistance.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Cros J

Authors: De Rycke O, Raffenne J, Lacombe C, Hentic O, Gounant V,

Keywords: neuroendocrine carcinoma, FOXM1, DNA repair, anti-tumor drug,

#2870 When It Comes to the Diagnostic of Neuroendocrine Neoplasms (NEN), Not All Markers and Clones Were Made Equal. Assessment of 5 Makers in 466 NEN from 10 Anatomical Sites

Introduction: Histological diagnostic of neuroendocrine neoplasms (NEN) relies on morphological criteria and expression of several neuroendocrine marker assessed by immunohistochemistry. Systematic large evaluation of classical (chromogranin A (chrA), synaptophysin (Syn), CD56) and emerging (chromogranin B (chrB), INSM1) markers are lacking.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Cros J

Authors: Mamodaly M, Chen R, Cazes A, Guedj N, Deschamps L,

Keywords: Neuroendocrine markers, Chromogranin A, Chromogranin B, INSM1,