Abstract Library

#4208 The somatostatin system – A silent messenger in pheochromocytomas and paragangliomas?

Introduction: Pheochromocytomas and paragangliomas (PPGLs) are rare neuroendocrine neoplasms (NENs) arising from neural crest-derived chromaffin cells. Due to the abundance of somatostatin receptors (SSTs) on the surface of most NENs, somatostatin analogues (SSAs) have become a cornerstone in their diagnosis and treatment. However, while PPGLs exhibit this feature, their functional responsiveness to SSAs remains limited, with the underlying cause of this resistance being still elusive.

Conference:

Presenting Author:

Authors: García Vioque V, Moreno-Montilla M, Blázquez-Encinas R, Barlier A, Arroba E,

Keywords: pheochromocytomas, paragangliomas, neuroendocrine tumor, somatostatin analogues, treatment resistance,

#4206 Specific spliceosomic landscapes reveal a possible link between RNA processing and panNETs behaviour

Introduction: Pancreatic Neuroendocrine Tumors (PanNETs) are characterized by a low number of mutations. Despite genomics, transcriptomics and epigenomics studies have helped to understand the molecular features of PanNETs, there is still a vast unexplored ground for better comprehension of this disease. In this context, we have previously documented that RNA splicing is dysregulated in these tumors, which unveils new avenues to discover potential biomarkers and therapeutic targets. However, clinical and molecular implications of this dysregulation are still very poorly understood.

Conference:

Presenting Author: Pedraza-Arévalo S

Authors: Pedraza-Arévalo S, Blázquez-Encinas R, García-Vioque V, Moreno-Montilla M, Ruiz-Palacios D,

Keywords: pancreatic neuroendocrine tumor, splicing, RNA, grade, metastasis,

#4199 Unravelling the RNA landscape of small intestine neuroendocrine neoplasms applying transcriptomic and spliceosomic perspectives

Introduction: The study of small intestine neuroendocrine neoplasms (siNENs) transcriptomics represents a challenge due to their rarity, tissue availability, and heterogeneity. Recent studies identified different molecular subtypes, but there are still gaps in the molecular mechanisms driving siNEN progression.

Conference:

Presenting Author:

Authors: Ibáñez-Costa A, Pedraza-Arevalo S, Moreno-Montilla M, Hernando J, García A,

Keywords: small intestine neuroendocrine neoplasm, splicing, transcriptomics, biomarker,

#3521 Molecular, histopathological, and functional characterization of the dysregulation of the splicing machinery in lung carcinoids

Introduction: Alteration of alternative splicing is an emerging hallmark of cancer, which has been linked to aggressiveness features in diverse types of tumors, including neuroendocrine neoplasms.

Conference:

Presenting Author: García Vioque V

Authors: García-Vioque V, Blázquez-Encinas R, Caro-Cuenca T, Moreno-Montilla M, Alors-Pérez E,

Keywords: lung carcinoid, splicing dysregulation, splicing events, splicing machinery,

#3509 Comparative biocomputational analysis of the splicing landscape across lung neuroendocrine neoplasms unveils a new actionable molecular layer

Introduction: Dysregulation of alternative splicing has emerged as a new, overarching hallmark of cancer, which may arise from mutations and/or altered expression of specific components of the splicing machinery. To date, no studies have been reported comparing the spliceosomic landscape, i.e. the status of the splicing machinery and alternative splicing patterns, among the different histological types of pulmonary neuroendocrine neoplasms (LungNENs), namely typical and atypical pulmonary carcinoids, Large Cell Neuroendocrine Carcinoma (LCNEC) and Small Cell Lung Cancer (SCLC).

Conference:

Presenting Author: Blázquez-Encinas R

Authors: Blázquez-Encinas R, García-Vioque V, Sexton-Oates A, Moreno-Montilla M, Alors-Pérez E,

Keywords: Neuroendocrine, NEN, Lung, Splicing,