Abstract Library

#2991 Gastroenteropancreatic (GEP) Neuroendocrine Neoplasia G3 (NEN G3) According to 2019 WHO Classification: A Comprehensive Clinicopathological Characterization Including Mismatch Repair (MMR) Proteins, PDL1 Expression and KRAS/BRAF Status

Introduction: In the 2019 WHO FOR NEN’S classification NETG3 have been distinguished from poorly differentiated neuroendocrine carcinoma (NEC). They are heterogeneous group concerning prognosis and treatment benefit.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Ruiz G, Graselli J, Golubicki M, Rizzol M,

Keywords: G3 NEN, PD-L1, KRAS, BIOMARKERS,

#2938 Rectal Neuroendocrine Tumor with Concomitant Erdheim-Chester Disease: A Rare Case Report

Introduction: Rectal neuroendocrine tumor (NET), a type of rare tumor, is rather rarer when accompanied by non-Langerhans cells histiocytosis named Erdheim-Chester disease (ECD).

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Zhang Y, Liu M, Chen L, Guo Y, Chen M,

Keywords: rectal neuroendocrine tumor, Erdheim-Chester disease.,

#2749 Impact of Next-Generation Sequencing Analyses on Treatment Management of Patients with Advanced Neuroendocrine Neoplasms

Introduction: Molecular genomic analyses are widely used in oncology but experience in advanced neuroendocrine neoplasms (NENs) is still limited.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Garcia Alvarez A

Authors: Garcia-Alvarez A, Hernando J, Vivancos A, Landolfi S, Casteras A,

Keywords: NGS, BRAF, RET,

#2746 Immunohistochemical Biomarker Expression in Gastro-Entero-Pancreatic Neuroendocrine Tumors at ENETS Centre of Excellence, University Hospital Zurich, Switzerland

Introduction: Gastro-entero-pancreatic neuroendocrine tumors (GEP-NET) are a heterogeneous tumor entity with respect to biological behaviour and prognosis. This makes diagnosis and treatment a major challenge.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Siebenhüner A

Authors: Duschek S, Weber A, Curioni-Fontecedro A, Siebenhüner A,

Keywords: Biomarker, immunohistochemistry, GEP-NET, TMA, Prognosis, hormone receptor,

#2205 Analysis of MET and RET Expression in Patients with Pancreatic Neuroendocrine Tumors Receiving Everolimus

Introduction: Target therapy has improved the outcome of neuroendocrine tumors (NETs), but little is known about the strategies to overcome the acquired resistance. MET is considered one of the putative mechanisms of resistance. RET is also rearranged in some other endocrine tumors (like thyroid).

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author:

Authors: Cella C, Barberis M, Spad F, Pisa E, Laffi A,

Keywords: Everolimus, MET, RET,