Abstract Library

#3056 Multi-Omic Characterization and Evolution of Neuroendocrine Neoplasm Organoids

Introduction: Molecular characterizations of neuroendocrine neoplasm (NENs) have unveiled candidate alterations associated with aggressiveness and suggested that the molecular link between neuroendocrine tumors (NETs) and neuroendocrine carcinomas (NECs) might be subtler than initially thought. For example, we have recently unveiled a new entity of pulmonary carcinoids (supra-carcinoids) with carcinoid-like morphology yet the molecular and clinical features of large cell neuroendocrine carcinoma (LCNEC). Testing hypotheses to explain aggressiveness and the possibility of progression or transition from NET to NEC through the accumulation of genetic anomalies requires in vitro and in vivo experimental models.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Foll M

Authors: Alcala N, Dayton T, Mangiante L, Delhomme T, Tabone-Egling S,

Keywords: organoids, omics, evolution, lung, pancreas, bioinformatics,

#3049 Organoid Models of Neuroendocrine Cell Growth and Tumorigenesis

Introduction: A paucity of in vitro and in vivo models has limited the study of Neuroendocrine neoplasms (NENs). Moreover, little is known about normal neuroendocrine (NE) cells and how they contribute to NEN formation.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Dayton T, Den Hartigh L, Levy S, van den Berg J, Kok N,

Keywords: Organoids, NENs, pulmonary neuroendocrine cells,

#3027 Impact of Small Cell (SC) versus (vs.) Non-Small Cell (nSC) Morphology on Outcomes of Patients (pts) with Extra-Pulmonary, Poorly Differentiated Neuroendocrine Carcinoma (EP-PD-NEC)

Introduction: The 2018 SEER data indicates EP-PD-NEC morphology (SC vs. nSC) may impact patient outcomes.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Zaninotto E

Authors: Zaninotto E, Frizziero M, Durand A, Taboada R, Luchini C,

Keywords: small cell neuroendocrine carcinoma, non small cell neuroendocrine carcinoma, predictive value,

#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,

#2970 Characteristics, Treatments and Inflammatory Biomarkers in Patients (pts) with G3 Gastroenteropancreatic (GEP) Neuroendocrine Neoplasms (NENs)

Introduction: Well-differentiated neuroendocrine tumors G3 (NETsG3) pts have a different biological behavior compared to those with neuroendocrine carcinomas (NECs). Sensitivity to platinum depends on Ki67 and there is no standard second line (2L). Neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) are predictive factors of cancer survival, but with limited evidence in NENs.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Cameselle-Garcia S, Sardo E, Landolfi S, Merino-Casabiel X, Sánchez J,

Keywords: Neuroendocrine Neoplasms, Inflammatory Biomarkers, Gastroenteropancreatic,