Abstract Library

#4151 Identifying potential tumor drivers through integration of gene expression and DNA copy number in SI-NET

Introduction: The genetics of small intestine neuroendocrine tumors (SI-NETs) remains poorly understood. To date, only CDKN1B has been found recurrently mutated, in approximately 9% of cases. On the contrary, DNA copy number alterations are found in a majority of cases. The most frequent aberration is heterozygous loss of chromosome 18. In addition, loss of chromosome 11, and gains on chromosomes 4, 5 and 14 are common. The cellular mechanisms through which these alterations drive tumor development are unknown.

Conference:

Presenting Author: Backman S

Authors: Backman S, Barazeghi E, Norlén O, Hellman P, Stålberg P,

Keywords: SI-NET, RNA-Seq, Gene dosage, Haplo-insufficiency, Copy number,

#3397 Molecular deciphering of primary liver neuroendocrine neoplasms confirms its distinct existence with foregut-like profile

Introduction: Isolated hepatic localizations of neuroendocrine tumors (NETs) are generally considered as metastatic NETs of unknown primary but could correspond to primary hepatic NETs (PHNETs), a poorly explored entity.

Conference:

Presenting Author:

Authors: de Mestier L, Nicolle R, Poté N, Rebours V, Hentic O,

Keywords: liver, unknown primary, DNA sequencing, RNA sequencing, immunohistochemistry,

#2896 Comparative Genomic Analysis of High Grade Neuroendocrine Neoplasms across Diverse Organs

Introduction: Grade 3 neuroendocrine neoplasms (G3 NENs), if poorly differentiated, have a median survival of 10-19 months. Little is known regarding biologic differences between G3 NENs from different primary sites, most commonly GI and lung.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Sun T

Authors: Sun T, Van Hummelen P, Martin B, Xia C, Zhao L,

Keywords: grade 3, high grade, neuroendocrine carcinoma, whole exome sequencing, rna-seq, transcriptomics, copy number analysis, sequencing, genomics, poorly differentiated,