Abstract Library

#3392 The chromosome 18 loss of heterozygosity axis of small intestinal neuroendocrine tumors

Introduction: Small intestinal neuroendocrine tumors (siNETs) are rare neoplasms which have low mutational burdens: With subtypes characterised in terms of copy number variation (CNV). Subtypes are defined as: Chromosome 18 loss of heterozygosity (18LOH), multiple copy number variation (MultiCNV), or no copy number variations (NoCNV). 18LOH tumors are associated with improved outcomes, the reasons for which are poorly understood.

Conference:

Presenting Author: Waterfield S

Authors: Waterfield S, Yousefi P, Amaulu A, Relton C, Thirlwell C,

Keywords: neuroendocrine, small intestinal, methylation, epigenetics, omics,

#3007 An mRNA-based Classifier Identifies PanNETs with Different Clinicopathological Characteristics

Introduction: Pancreatic neuroendocrine tumors (PanNETs) are a heterogeneous group of neoplasms that varies from indolent to highly aggressive diseases. Previous studies have suggested alterations of ATRX/DAXX as biomarkers of dismal prognosis, yet inconclusive data (especially in the metastatic setting) prevent those biomarkers to be used as routine clinical tests.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Vicentini C, Barbi S, Bersani S, Rusev B, Lawlor R,

Keywords: PanNET, gene expression profile, ATRX/DAXX mutations, patients’ stratification.,

#2963 Intrinsic Gene Programs in Metastasis-like Primary Subtype Is Associated with Early Metastatic Evolution in Pancreatic Neuroendocrine Tumours

Introduction: Three molecular subtypes of pancreatic neuroendocrine tumours (PanNETs) have been described: insulinoma-like, intermediate and metastasis-like primary (MLP). The Latter is a non-functional tumours with highly metastatic potential. A mouse model of PanNET showed that MLP subtype has two different pathways of progression including stem/progenitor and epithelial-to-mesenchymal transition. However, the evolution of metastasis in patients requires further studies.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Sadanandam A

Authors: Sadanandam A, Lawlor R, Nyamundanda G, Ragulan C, Scarpa A,

Keywords: Pancreatic neuroendocrine tumors, metastasis, metastatic evolution, early metastasis, recurrence, prognosis, Patient tumours, cause and effect relationship, computational modeling, molecular subtypes, stages, metastatic potential,

#2086 miRNA Expression Defines Novel Subgroups of Small Intestinal Neuroendocrine Tumors

Introduction: Epigenetic dysregulation frequently occurs in cancers. Here we present the largest survival related miRNA profiling study to date of small intestinal neuroendocrine tumors (SI-NETs).

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author:

Authors: Arvidsson Y, Rehammar A, Bergström A, Andersson E, Altiparmak G,

Keywords: neuroendocrine tumor, small intestine, miRNA, profiling, cluster analysis, survival, miR-375, B-catenin,

#1370 68Ga-DOTATOC PET and Gene Expression Profile in Patients with Neuroendocrine Carcinomas

Introduction: Somatostatin receptor expression on both protein and gene expression levels were compared with in vivo 68Ga-DOTATOC PET/CT in patients with neuroendocrine carcinomas (NEC).

Conference: 13th Annual ENETSConcerence (2016)

Presenting Author: Olsen I

Authors: Olsen I, Langer S, Federspiel B, Oxbøl J, Loft A,

Keywords: neuroendocrine carcinoma, gene expression, 68Ga-DOTATOC, IHC, SSTR2,