Abstract Library

#2983 Differential TGF-β Signalling in Typical and Atypical Bronchial Carcinoids

Introduction: Typical and atypical bronchial carcinoids (TBC and ABC) are well-differentiated neuroendocrine neoplasms (NEN). Metastatic BC having low to moderate mitotic count may still be treated with somatostatin analogues and mTOR inhibitors; however, TBC and ABC have been reported to respond very differently to therapy and an effective treatment algorithm is still lacking. TGF-β is known for its ability to activate mTOR pathway and induce epithelial mesenchymal transition, affecting cell pathophysiological capabilities such as proliferation, migration and tissue invasiveness.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Borges de Souza P

Authors: Borges de Souza P, Tagliatti V, Capobianco S, Ambrosio M, Chinnici S,

Keywords: Neuroendocrine neoplasms, bronchial carcinoids, TGF-β,

#2695 Different Treatment Options for Patients with Advanced Gastrointestinal Neuroendocrine Tumors

Introduction: Low sensitivity to chemotherapy leaves open question of optimal approach to drug therapy of neuroendocrine tumors (NETs). Somatostatin analogues (SSA) (octreotide, lanreotide) and mTOR inhibitors are successfully used in treatment.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Isiangulova A, Khasanov R,

Keywords: neuroendocrine tumors, somatostatin analogues, target therapy, everolimus, systemic therapy,

#2291 Somatostatin Analogs and mTOR Inhibitors as Radioprotectors or Radiosensitizers in Neuroendocrine Tumor Cells

Introduction: Neuroendocrine tumors (NETs) express somatostatin receptors that are currently utilized for diagnostic and therapeutic approaches. For peptide receptor radionuclide therapy (PRRT), somatostatin analogs are coupled to radionuclides like 90Y or 177Lu, which after injection are bound and taken up specifically by NETs. One hypothesis potentially explaining the discrepancies between expected result and observed outcome of PRRT might be that somatostatin analogs induce a G1 arrest in NET cells, thereby rendering them radioresistant.

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author: Grötzinger C

Authors: Grötzinger C, Exner S, Prasad V, Erdmann S, Wiedenmann B,

Keywords: PRRT,

#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,

#2112 Relationship between Metabolic Toxicity and Efficacy of Everolimus in Patients with Neuroendocrine Tumors (NETs): A Pooled Analysis from the Randomized, Phase 3 RADIANT-3 and RADIANT-4 Trials

Introduction: Hyperglycemia and hypercholesterolemia are class effects of mTOR inhibitors such as everolimus (EVE).

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author:

Authors: Fazio N, Carnaghi C, Buzzoni R, Valle J, Herbst F,

Keywords: adverse events, everolimus, RADIANT-3, RADIANT-4, landmark analysis, mTOR inhibitors, targeted therapy, neuroendocrine tumors,