Abstract Library

#4634 Management of hypercalcaemia of malignancy in neuroendocrine tumour patients – A case series

Introduction: Hypercalcaemia of malignancy (HM) rarely coexists with neuroendocrine tumours (NET). There are no precise guidelines for management of hypercalcaemia in NET.

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Presenting Author:

Authors: Klepinowska M, Sagan K, Brzeska A, Andrysiak-Mamos E, Kiedrowicz B,

Keywords: hypercalcaemia of malignancy, neuroendocrine tumour, pancreatic neuroendocrine tumour, hypercalcaemia,

#4598 I ain’t missing you at all – Vanishing extra-abdominal small intestinal neuroendocrine carcinoma metastasis

Introduction: Small intestinal neuroendocrine neoplasms (siNEN) are the most common small bowel malignancy. Almost 50% present with distant metastasis.

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Presenting Author:

Authors: Corrêa Figueira C, Bento A, Cardoso Gomes C, Oliveira A, Oliveira M,

Keywords: Small intestinal neuroendocrine neoplasm, Small intestinal neuroendocrine carcinoma, Metastatic neuroendocrine disease, Extra-abdominal metastatic disease, Non-hepatic neuroendocrine metastasis,

#4569 Dramatic response to tarlatamab in a patient with metastatic primary small cell neuroendocrine carcinoma of the breast

Introduction: Primary small cell neuroendocrine carcinoma of the breast (SCNCB) is a rare malignancy with a poor prognosis. Tarlatamab, a DLL3-targeted bispecific T-cell engager, is FDA-approved for extensive-stage small cell lung carcinoma.

Conference:

Presenting Author: Patel D

Authors: Patel D, Alahmadi A, Maddocks K, Lampert B, Giglio P,

Keywords: tarlatamab, small cell neuroendocrine carcinoma of the breast,

#4519 ANXA1-labelled cancer-associated fibroblasts induces tumour invasion and immunosuppressive microenvironment

Introduction: The growth pattern of a tumour is a marker for distinguishing inert from invasive tumours. In general, tumours such as the encapsulated follicular variant of papillary thyroid carcinoma show expansive growth. In contrast, invasive tumours, such as colorectal cancer and squamous cell carcinoma of the tongue, show invasive growth with infiltration into surrounding structures and have a poorer prognosis. Pancreatic neuroendocrine neoplasm (PNEN) is the heterogeneous tumour originating from peptidergic neurons and neuroendocrine cells. PNEN with a high proportion of tumour mesenchyme, especially those presenting an infiltrating stroma, have a poor prognosis. In the infiltrating mesenchyme, cancer-associated fibroblasts (CAF) play an important role. However, little research has been done on the mechanisms of how infiltrating CAF affects tumour malignancy and immune microenvironment.

Conference:

Presenting Author: Wang Y

Authors: Wang Y, Xu J, Chen J, Xu X, Ji S,

Keywords: pancreatic neuroendocrine neoplasm, tumour-associated fibroblasts, immunosuppressive microenvironment,

#4516 A methylation-based classifier for neuroendocrine tumour detection using smMIP technology

Introduction: DNA methylation plays an important role in NET pathogenesis. Distinct methylation profiles can differentiate between tumour subtypes, predict malignancy potential, and provide insights into tumour progression.

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Presenting Author:

Authors: Ibrahim J, Mariën L, Vanpoucke T, Neefs I, Vandenhoeck J,

Keywords: neuroendocrine tumour, DNA methylation, biomarker selection, IMPRESS technology, classifier model,