Abstract Library

#4060 Interim safety and exploratory efficacy results of a phase 2, randomised, parallel-group study of oral Paltusotine treatment in subjects with carcinoid syndrome

Introduction: Carcinoid Syndrome (CS) is the most common functional NET syndrome. It is characterized by watery diarrhea or cutaneous flushing. Paltusotine is an investigational once-daily, oral, selective SST2 agonist in development for the treatment of acromegaly and CS. Paltusotine has been shown to maintain IGF-1 control at levels similar to injected depot SRLs.

Conference:

Presenting Author:

Authors: Usiskin K, Chauhan A, Mui C, Dillon J, Fan X,

Keywords: oral, paltusotine, carcinoid syndrome, phase II,

#3871 A phase 2, randomized, parallel-group study to evaluate the safety, pharmacokinetics, and dose response of paltusotine treatment in patients with carcinoid syndrome

Introduction: While long-acting somatostatin receptor ligands (SRLs) are mainstay treatments for carcinoid syndrome (CS), symptom relief at labelled doses is inadequate for many patients. Paltusotine is a novel oral, nonpeptide, selective somatostatin receptor type 2 agonist. In patients with acromegaly, paltusotine maintains plasma IGF-1 levels in patients switching from long-acting SRLs. Paltusotine was well tolerated in phase 2 acromegaly studies.

Conference:

Presenting Author:

Authors: Chauhan A, Shaheen S, Usiskin K, Odueyungbo A, Mui C,

Keywords: Paltusotine, Phase 2 trial, Somatostatin receptor agonist, Safety, Pharmacokinetics, Carcinoid syndrome,

#3380 Dose selection for paltusotine, a once daily oral nonpeptide, somatostatin receptor 2 ligand, for the treatment of patients with Carcinoid Syndrome (CS)

Introduction: Long-acting somatostatin receptor ligands (LA-SRLs) are first line therapy for neuroendocrine tumor (NET) syndromes including acromegaly and the carcinoid syndrome (CS). In acromegaly, two phase 2 studies (NCT 03789656 and 03792555) suggested that patients injected with SRLs can switch to once daily orally bioavailable paltusotine (CRN00808), a nonpeptide, small molecule, somatostatin type 2 (SST2) receptor ligand (SRL), while maintaining stable serum IGF-1 levels. However, CS patients may require higher doses of an orally administered drug due to maldigestion commonly associated with the syndrome or its treatment and the pharmacokinetics (clearance and volume of distribution) of paltusotine may differ between CS and acromegaly because of differences in metabolic capacity of the liver and body composition.

Conference:

Presenting Author:

Authors: Lagast H, Madan A, Metz D, Luo R, Struthers S,

Keywords: neuroendocrine tumor, carcinoid syndrome, paltusotine, somatostatine receptor ligand, dose-response, exposure-response,

#3320 TGF-β increase caspase activation and migration in typical bronchial carcinoids

Introduction: Typical bronchial carcinoids (TBC) are well-differentiated neuroendocrine neoplasms (NEN) whose management can still be very challenging due to reduced sensitivity to therapy. Previous studies have reported TGF-β’s ability to activate mTOR pathway and induce epithelial to mesenchymal transition (EMT). Moreover, preliminary results show an overexpression of TGF-β signalling and caspase activation in TBC.

Conference: 18th Annual ENETS Concerence (2021)

Presenting Author: Gagliardi I

Authors: Borges de Souza P, Gagliardi I, Martelli M, Zatelli M,

Keywords: bronchial carcinoid, TGF-β signalling, mTOR, EMT,

#2269 Can Insulin-Like Growth Factor 1 (IGF-1), IGF-1 Receptor, Connective Tissue Growth Factor and Ki-67 Labelling Index Have a Prognostic Role in Pulmonary Carcinoids?

Introduction: Altered expression of Insulin-like Growth Factor-1 (IGF-1), its receptor (IGF-1R), Connective Tissue Growth Factor (CTGF) and Hypoxia Factor-1 (HIF-1), has been implicated in tumorigenesis. These factors have not been studied systematically in Pulmonary Carcinoids (PCs).

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author:

Authors: Tsolakis A, Kanakis G, Grimelius G, Papaioannou D, Kaltsas G,

Keywords: IGF-1, IGF-1R, CTGF, HIF-1, Ki-67,