Abstract Library

#4618 The exceptionally rare phenomenon of well-differentiated colon neuroendocrine tumours

Introduction: Colonic neuroendocrine tumours (NETs), excluding rectal NETs, are often described as relatively common and aggressive, with inferior median survival compared to other gastrointestinal (GI) primary sites. However, epidemiological databases may conflate well-differentiated NETs with poorly differentiated NECs, leading to unclear data on prevalence, clinical behaviour, and prognosis of well-differentiated colonic NETs.

Conference:

Presenting Author: Al-Toubah T

Authors: Al-Toubah T, Strosberg J,

Keywords: colon, neuroendocrine tumour, caecum, sigmoid, neuroendocrine neoplasm,

#4567 Malignant pheochromocytoma with late distant metastases and secondary hypercalcaemia

Introduction: Pheochromocytoma is a rare neuroendocrine tumour of the adrenal medulla. Malignant variants occur with a very low frequency and can be diagnosed only after the spread of distant metastasis.

Conference:

Presenting Author:

Authors: Kirova I, Vandeva S, Markova M, Elenkova A, Robeva R,

Keywords: neuroendocrine, malignant pheochromocytoma, metastasis, hypercalcaemia,

#4556 Optimising the establishment of patient-derived models for neuroendocrine neoplasms

Introduction: Neuroendocrine neoplasms (NENs) are clinically and molecularly diverse, with limited understanding of their tumour biology. Efforts to develop patient-derived models have been unsuccessful, highlighting an urgent need for accurate models to support fundamental research.

Conference:

Presenting Author: Hernández Llorens M

Authors: Hernández-Llorens M, Baena-Moreno M, Lamas-Paz A, Sarmentero J, Anton-Pascual B,

Keywords: patient-derived model, organoids, PDXs, Growth factor,

#4524 SIRT7 drives the radioresistance of pancreatic neuroendocrine tumours via the DNMT1-MEN1 axis

Introduction: Pancreatic neuroendocrine tumours (PanNETs) are a rare and highly heterogeneous type of tumour in the pancreas. After failure of standard treatment, patients have poor prognoses. Radiotherapy may be a potential therapeutic modality for such patients. However, PanNETs usually exhibit a radiation “cold” tumour through unclarified mechanisms.

Conference:

Presenting Author: Jianyun J

Authors: Jiang J, Xu J, Liang Y, Chen L, Ji S,

Keywords: pancreatic neuroendocrine tumour, radio resistance, SIRT7, MEN1,

#4373 Focal adhesion kinase drives proliferation and invasion in gastrointestinal neuroendocrine tumours via modulation of transformative cell signalling and gene expression

Introduction: Focal Adhesion Kinase (FAK) is a non-receptor protein kinase that localises in both the cytoplasm and nucleus, influencing cell function through its enzymatic and scaffold activities. Through its scaffold function, FAK modulates gene expression epigenetically. Gastrointestinal neuroendocrine tumours (GI-NETs) exhibit a relatively low mutation rate, supporting the hypothesis that these malignancies may be driven epigenetically. Recently, PROTAC (PROteolysis TArgeting Chimeras) technology has enabled selective inhibition and degradation of FAK, providing a novel approach to explore its role in GI-NETs.

Conference:

Presenting Author: Gagliano T

Authors: Toffoli L, Ditsiou A, Moschioni E, Hamm V, Gagliano T,

Keywords: FAK, GI-NET, Cell Signalling, Epigenetics,