Abstract Library

#4587 Exploring the splicing landscape to identify survival-related biomarkers in small intestine neuroendocrine neoplasms

Introduction: The study of small intestine neuroendocrine neoplasms (siNENs) is challenging due to their rarity and complexity. While transcriptomic subtypes have been identified, the mechanisms behind their progression are still unclear. The process of RNA splicing is often altered in cancer, and our group has described that such dysregulation is also present in various NENs.

Conference:

Presenting Author: Ibáñez Costa A

Authors: Ibáñez-Costa A, García Vioque V, Pedraza-Arévalo S, Hernando Cubero J, García A,

Keywords: small intestine neuroendocrine tumour, splicing, biomarker, survival, ki-67, RNA,

#4568 Investigating the dual role of SNW1 in splicing and transcription to understand pancreatic neuroendocrine tumour progression

Introduction: Pancreatic neuroendocrine tumours (PanNETs) are classified into grades (G1-G3) based on mitotic rate, with higher grades exhibiting increased dedifferentiation and invasiveness. Despite the clinical significance of PanNETs progression, the underlying mechanisms remain largely unexplored. We have previously reported that altered alternative splicing plays an essential role in PanNETs progression, where SNW1, a key regulator of splicing and transcription, was found to be overexpressed in tumour tissue, correlating with higher grade and recurrence risk.

Conference:

Presenting Author: González-Pérez C

Authors: González-Pérez C, Simón-Lesnyak M, Blázquez-Encinas R, García Vioque V, Moreno Montilla M,

Keywords: pancreas, neuroendocrine tumour, progression, SNW1, splicing,

#4559 Exploring the interplay between RNA methylation and splicing dysregulation in neuroendocrine tumours

Introduction: Post-transcriptional modifications play crucial roles in regulating gene expression and cellular function. While recent findings indicate that alternative splicing dysregulation plays a key role in tumorigenic properties of neuroendocrine tumours (NETs), the role of other RNA processing mechanisms, such as N6-methyladenosine (m6A) — being the most common RNA methylation — remains largely unexplored in NETs.

Conference:

Presenting Author:

Authors: Ruiz-Palacios D, Gutiérrez Camacho L, García Vioque V, Moreno Montilla M, Blázquez-Encinas R,

Keywords: RNA methylation, splicing, neuroendocrine tumour, lung NET, pan NET,

#4544 Spatial and temporal intratumour heterogeneity of pancreatic neuroendocrine tumours (PanNET)

Introduction: Data derived from the study of intertumour heterogeneity have led to propose that PanNET evolution may start either from beta cells with good prognosis, or from alpha cells with sequential alterations of MDA (MENIN-DAXX/ATRX) leading to more aggressive lesions.

Conference:

Presenting Author: Awan Z

Authors: Awan Z, Bourdeleau P, Epée J, Ps H, Tihy M,

Keywords: Pancreatic neuroendocrine tumour, Heterogeneity, Tumour microenvironment,

#4543 Single-cell transcriptomic landscape indicates the potential role of immunotherapy in metastatic pancreatic angiosarcoma

Introduction: Pancreatic angiosarcoma is a rare and highly aggressive tumour originated from lymphatic or vascular endothelial cells, with poor prognosis and few effective treatments. However, little is known about its tumour microenvironment and the mechanisms of its progression.

Conference:

Presenting Author: Yang Y

Authors: Yang Y, Chen L, Liu M, Lin X, Peng S,

Keywords: pancreatic angiosarcoma, single-cell RNA sequencing, immunotherapy, PD-L1, CD86,