Abstract Library

#3031 Primitive Peripheral Neuroectodermal Tumor: Case Report

Introduction: Primitive neuroectodermal tumors belong to the family of Ewing sarcomatous tumors, all derived from the same stem cell. The cells of the neural crest are believed to be at the origin of these tumors. The predilection sites of these sarcomas are para-vertebral region, chest wall and the distal ends. The positive diagnosis of primary neuroectodermal tumors requires the contribution of histopathology, immunohistochemistry and cytogenetics.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Ikram B, Soumeya G,

Keywords: Primitive neuroectodermal tumor, primary, peripheral, pPNET, CD99, surgery, chemotherapy,

#2982 Comprehensive Molecular Analysis Identifies Driver Mutations in Metastases of Sporadic Well-Differentiated Neuroendocrine Tumours of the Small Intestine

Introduction: Small intestinal neuroendocrine tumours (SI-NETs) represent a heterogenous group of tumours. The molecular mechanisms which contribute to progression of SI-NETs are poorly elucidated. They are considered to be molecularly distinct from neuroendocrine carcinomas (NECs), which share oncogenic pathways with adenocarcinomas.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Samsom K

Authors: Samsom K, van Veenendaal L, Roepman P, Kodach L, Steeghs N,

Keywords: whole genome sequencing, neuroendocrine tumour, small intestine, genetics,

#2936 Mutational Landscape of 109 High-Grade Gastroenteropancreatic Neuroendocrine Neoplasms G3

Introduction: Gastroenteropancreatic (GEP) neuroendocrine neoplasms (NEN) G3 are rare with a poor outcome. Molecular data for GEP NEN G3 is limited and the 2019 WHO classification is based on morphology and proliferation rate.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Elvebakken H

Authors: Venizelos A, Elvebakken H, Perren A, Hjortland G, Sundlöv A,

Keywords: molecular genetics, neuroendocrine carcinoma, neuroendocrine tumors, gastroenteropancreatic, mutations,

#2816 Germline Variants in Cancer Predisposing Genes in Young Adults with Neuroendocrine Tumors

Introduction: Advances in genomics have enabled the recognition of new cancer predisposing genes (CPG). There are few studies of CPG in neuroendocrine tumors (NET).

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Riechelmann R

Authors: Riechelmann R, de Paula C, Donadio M, Barros M, Formiga M,

Keywords: hereditary syndrome, neuroendocrine tumors, germline variants,

#2283 Ultra-Deep Targeted Resequencing Reveals Recurrent DAXX and CYFIP2 Mutations and Implicates Novel Pathways in Pancreatic Neuroendocrine Tumors

Introduction: Recent studies in pancreatic neuroendocrine tumors have identified mutations in DAXX/ATRX, MEN1, and genes involved in the phosphoinositide-3-kinase/Akt/mammalian target of rapamycin (PI3K-Akt-mTOR) pathway. However, these studies focused on abundant mutations.

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author: Vandamme T

Authors: Vandamme T, Beyens M, Van Camp G, Boons G, Hofland L,

Keywords: pancreatic neuroendocrine tumors, PNET, genetics, tumor heterogeneity, hotspot mutations,