Abstract library

24 results for "Genetics".
#2936 Mutational Landscape of 109 High-Grade Gastroenteropancreatic Neuroendocrine Neoplasms G3
Introduction: Gastroenteropancreatic (GEP) neuroendocrine neoplasms (NEN) G3 are rare with a poor outcome. Molecular data for GEP NEN G3 is limited and the 2019 WHO classification is based on morphology and proliferation rate.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: MSc Andreas Venizelos
#2982 Comprehensive Molecular Analysis Identifies Driver Mutations in Metastases of Sporadic Well-Differentiated Neuroendocrine Tumours of the Small Intestine
Introduction: Small intestinal neuroendocrine tumours (SI-NETs) represent a heterogenous group of tumours. The molecular mechanisms which contribute to progression of SI-NETs are poorly elucidated. They are considered to be molecularly distinct from neuroendocrine carcinomas (NECs), which share oncogenic pathways with adenocarcinomas.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: Drs Kris Samsom
#2734 Therapy-Related Myeloid Neoplasms in Patients with Neuroendocrine Neoplasms after Peptide Receptor Radionuclide Therapy: A Systematic Review
Introduction: Therapy-related myeloid neoplasm (t-MN) has been reported as a potential long-term and frequently lethal adverse event after PRRT in NET. However, the incidence, time of diagnosis, and nature of t-MN is unclear.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Epidemiology/Natural history/Prognosis - Registries, nationwide and regional surveys
Presenting Author: DR Mohamad Sonbol
Authors: Sonbol M, Hilal T, Halfdanarson T, ...
#2816 Germline Variants in Cancer Predisposing Genes in Young Adults with Neuroendocrine Tumors
Introduction: Advances in genomics have enabled the recognition of new cancer predisposing genes (CPG). There are few studies of CPG in neuroendocrine tumors (NET).
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: Prof Rachel Riechelmann
#3031 Primitive Peripheral Neuroectodermal Tumor: Case Report
Introduction: Primitive neuroectodermal tumors belong to the family of Ewing sarcomatous tumors, all derived from the same stem cell. The cells of the neural crest are believed to be at the origin of these tumors. The predilection sites of these sarcomas are para-vertebral region, chest wall and the distal ends. The positive diagnosis of primary neuroectodermal tumors requires the contribution of histopathology, immunohistochemistry and cytogenetics.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Case reports
Presenting Author: Boublenza Ikram
Authors: Ikram B, Soumeya G, ...
#62 Genome-wide DNA methylation profiling of pancreatic neuroendocrine tumors identifies distinct methylation profiles and differentially methylated gene promoter regions associated with low, medium and high grade tumors
Introduction: Integration of genetics and epigenetics has emerged as a powerful approach to studying cellular differentiation (Mikkelsen et al, 2009) and tumorigenesis (Shen et al, 2007). The study of DNA methylation is of particular importance in cancer, as causal involvement has been demonstrated and it is the most stable of all epigenetic modifications, making it a desirable marker for both early detection and treatment of tumors. Hypermethylation of CpG sites in gene promoter regions leads to decreased gene expression; if such a gene is a tumor suppressor, this leads to carcinogenesis. To date, there have been no studies of genome-wide DNA methylation profiling of NETs. This study sets out to determine the DNA methylation profiles of low, intermediate and high grade pancreatic NET liver metastases with the intention of identifying dysregulated biological pathways in the development of these tumors. A protocol for the analysis formalin-fixed paraffin embedded tissue (FFPE) has also been developed in order to study these tumors in significant numbers following this pilot study.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: Dr Christina Thirlwell
#262 Changes on Chromosome 18 are Involved in Sporadic and Familial Ileal Carcinoid Tumor Development
Introduction: Small intestine neuroendocrine tumors (ileal carcinoid) is generally considered a sporadic disease. We have identified nine families with an ileal carcinoid tumor diagnosed in two or more individuals.
Conference: 8th Annual ENETS Conference (2011)
Category: Clinical
Presenting Author: Professor Eva Tiensuu Janson
#646 Immunohistochemical (IHC) and Cytogenetic Approach for Improving Diagnosis and Therapy of Ewing Sarcoma (ES)/pPNET Arising in the Ileocecal Region
Introduction: ES/pPNET primary to the ileocecal region (IpPNET) have been rarely reported on and show close similarities in histology and clinical presentation with small round blue cell tumors. The EWS gene is fused to four members of the ETS family.
Conference: 10th Annual ENETS Conference 2013 (2013)
Category: Pathology, grading, staging
Presenting Author: Md, PhD Massimo Milione
Keywords: EWS, pPnet, FEV
#780 Epigenetic Regulation of Endogenous Somatostatin Expression in Neuroendocrine Tumors
Introduction: Somatostatin (SST) can regulate hormone secretion and cell proliferation in neuroendocrine tumors (NETs). SST expression levels in NETs likely differ between patients. DNA methylation inhibits gene transcription and can be reversed by the demethylating drug 5-aza-2-deoxycytidine (AZA).
Conference: 10th Annual ENETS Conference 2013 (2013)
Category: Biomarkers
Presenting Author: MSc Marije J. Veenstra
#820 ACTG2 Inhibits Growth and Is Epigenetically Repressed in Small Intestinal Neuroendocrine Tumors
Introduction: Small intestinal neuroendocrine tumors (SI-NETs) originate from the enterochromaffin cells in the ileum. Actin gamma smooth muscle 2 (ACTG2) is downregulated in lymph node metastases from SI-NETs. ACTG2 and microRNA-145 (miR-145) are aberrantly expressed in other cancers and ACTG2 can be induced by miRNA-145.
Conference: 11th Annual ENETS Conference 2014 (2014)
Category: Basic Science - Genetics, epigenetics, miRNAs
Presenting Author: PhD candidate Katarina Edfeldt