Abstract Library

#4656 Development of a 3D patient-derived extracellular matrix hydrogel model of small intestinal neuroendocrine tumour and mesenteric fibrosis

Introduction: The pathogenesis of mesenteric fibrosis in small intestinal neuroendocrine tumours (SI-NETs) is poorly understood, limiting development of effective treatments and biomarkers. A major barrier to research is the lack of disease models.

Conference:

Presenting Author:

Authors: Hodgetts H, Martins M, Luong T, Hall A, Webster A,

Keywords: small intestine, neuroendocrine, 3D model, hydrogel, fibrosis,

#4650 Whole exome sequencing in pulmonary neuroendocrine neoplasms: Findings from a pilot investigation

Introduction: The molecular landscape of lung neuroendocrine tumours (NETs) is still poorly characterised. Lung NETs main prognostic factors currently include stage, histotype, grade, location, and demographic parameters, but molecular biomarkers are still not available, limiting the possibility for personalised therapeutic strategies.

Conference:

Presenting Author:

Authors: Martiradonna M, Pecora G, Mancini C, de Vitis C, Telese S,

Keywords: carcinoid, PBMC, NGS, Whole exome sequencing, WES, FFPE, Lung NET, molecular landscape,

#4647 Crosstalk between cancer-associated fibroblasts and small intestinal neuroendocrine tumour cells in a 3D spheroid model

Introduction: At diagnosis, over 50% of small intestinal neuroendocrine tumours (SI-NETs) have metastasised to the mesentery where they often induce extensive fibrosis. Recent studies highlight the crucial interaction between SI-NET cells and cancer-associated fibroblasts (CAFs) in the pathogenesis of mesenteric fibrosis (MF).

Conference:

Presenting Author:

Authors: van der Slik E, Feelders R, van Koetsveld P, Iyer A, Hofland J,

Keywords: mesenteric fibrosis, small intestinal neuroendocrine tumour, CAF,

#4646 Dysregulated miRNA in patients with GEP-NEN and potential role as circulating biomarker

Introduction: Neuroendocrine neoplasms (NENs) are a class of rare and molecularly extremely heterogeneous tumours. NENs arise predominantly in the gastrointestinal (GEP) and pulmonary tracts but can also involve thyroid and breast. NENs often present with non-specific symptoms and lack early specific biomarkers, leading to frequent metastatic diagnoses and primary site challenges.

Conference:

Presenting Author:

Authors: Di Mauro A, Clemente O, Cannella L, Della Vittoria G, Neri G,

Keywords: neuroendocrine tumour, miRNome profiling, biomarker, gep-net, molecular biology,

#4604 Germline predisposition to neuroendocrine tumours of the pancreas (pNEN) based on mutations in DNA repair genes – BRCA1, BRCA2, PALB2, CHEK2, MLH1, MSH2, MSH6, PMS2, EPCAM, APC, MUTYH, STK11

Introduction: Neuroendocrine tumours of the pancreas (pNEN) rank as the second most common epithelial neoplasms after pancreatic adenocarcinoma, with increasing prevalence and a mortality rate of 60%. Identifying germline mutations in DNA repair genes such as CHEK2, BRCA1/2, and MUTYH within pNEN cases may pave the way for personalised diagnostics and therapies.

Conference:

Presenting Author:

Authors: Jurecka Lubieniecka B, Ros-Mazurczyuk M, Oczko-Wojciechowska M, Cortez A, Handkiewicz-Junak D,

Keywords: pNEN, DNA repair genes,