Abstract library

170 results for "Stein".
#2783 Use of Plasma Proteins to Predict Progressive Disease in Patients with Small Intestinal Neuroendocrine Tumours
Introduction: Prediction of progression in small intestinal neuroendocrine tumors (SI-NET).
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Biomarkers
Presenting Author: MD PhD Roger Belusa
#2983 Differential TGF-β Signalling in Typical and Atypical Bronchial Carcinoids
Introduction: Typical and atypical bronchial carcinoids (TBC and ABC) are well-differentiated neuroendocrine neoplasms (NEN). Metastatic BC having low to moderate mitotic count may still be treated with somatostatin analogues and mTOR inhibitors; however, TBC and ABC have been reported to respond very differently to therapy and an effective treatment algorithm is still lacking. TGF-β is known for its ability to activate mTOR pathway and induce epithelial mesenchymal transition, affecting cell pathophysiological capabilities such as proliferation, migration and tissue invasiveness.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Signaling pathways, receptors, biomarkers
Presenting Author: Patricia Borges de Souza
#2991 Gastroenteropancreatic (GEP) Neuroendocrine Neoplasia G3 (NEN G3) According to 2019 WHO Classification: A Comprehensive Clinicopathological Characterization Including Mismatch Repair (MMR) Proteins, PDL1 Expression and KRAS/BRAF Status
Introduction: In the 2019 WHO FOR NEN’S classification NETG3 have been distinguished from poorly differentiated neuroendocrine carcinoma (NEC). They are heterogeneous group concerning prognosis and treatment benefit.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Biomarkers
Presenting Author: MD Gonzalo Ruiz
Keywords: G3 NEN, PD-L1, KRAS, BIOMARKERS
#2707 Investigating the Crosstalk between MEN1, p53 and Notch Reveals Biomarkers of Formation of Primary Pancreatic Neuroendocrine Tumors
Introduction: Pancreatic neuroendocrine tumors (PNETs) comprise a heterogeneous group of endocrine tumors. Previous studies showed that mutations of p53 are extremely rare; whereas genetic changes of MEN1 frequently occur and are correlated with poor prognosis in PNET. Still, their roles in tumorigenesis remain elusive.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Signaling pathways, receptors, biomarkers
Presenting Author: Dr Ylenia Capodanno
#2986 Characterization of 142 Human Pancreatic Neuroendocrine Tumors: ATRX and DAXX Correlation with Clinical-Pathological Data
Introduction: Pancreatic neuroendocrine tumors (PNETs) are rare and heterogeneous neoplasms with a 10-year survival rate less than 30%. Up to 43% of them are driven by inactivating mutations in ATRX or DAXX. These are important players at chromatin remodeling, that when mutated prone cancer cells to initiate the alternative lengthening of telomeres (ALT). ALT phenotype correlates with in situ loss of expression of the proteins ATRX or DAXX and can be corroborated by telomere-FISH.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Signaling pathways, receptors, biomarkers
Presenting Author: DVM Tiago B Gaspar
#2689 Correlation between Immunohistochemical Markers Expression and Lymph Node Metastasis in Gastroenteropancreatic Neuroendocrine Neoplasms: A Nation-Wide 10-Year Retrospective Clinical Epidemiological Study in China
Introduction: Previous research on the correlation between different pathological features and the development of gastroenteropancreatic neuroendocrine neoplasms (GEP-NENs) is rare in China.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Epidemiology/Natural history/Prognosis - Registries, nationwide and regional surveys
Presenting Author: Huan Yang
Authors: Yang H, Shi S, Zhang S, Ji Y, ...
#2821 Nucleophosmin Expression and Relocation in Pancreatic Neuroendocrine Tumors: Preliminary Data
Introduction: Pancreatic neuroendocrine tumors (PanNETs) are a heterogeneous group of neoplasms with unpredictable clinical course and biological behavior. Nucleophosmin (NPM) is an important multifunctional protein mainly located in the nucleolus. NPM has been reported to be overexpressed in many types of human cancer, activating tumor development and progression. However, the role of NPM in PanNETs is unknown.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Biomarkers
Presenting Author: MD Vera Delektorskaya
#2999 Aberrant Tryptophan Metabolism in Stromal Cells Is Associated with Mesenteric Fibrosis in Small Intestinal Neuroendocrine Tumours
Introduction: Increased levels of serotonin secretion are associated with mesenteric fibrosis (MF) in small intestinal neuroendocrine tumors (SI-NETs). However, only a proportion of patients with increased serotonin production will develop mesenteric fibrosis.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: Drs. Anela Blazevic
#3028 Pancreatic Neuroendocrine Neoplasms: Dissecting the Molecular Heterogeneity
Introduction: Pancreatic neuroendocrine neoplasms (PNENs) are a group of rare but biologically and clinically heterogeneous neoplasms with variable patient outcomes. Little is known about the molecular differences between PNENs and the biologic significance of such divergence.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: Chi-Fu Kevin Yang
Authors: Yang K C, Kalloger S, Aird J, Lee M, ...
#3072 Rb and p53 Status Determination by Immunochemistry Is Complementary in Routine Practice to Genetic Testing of Neuroendocrine Neoplasms
Introduction: Rb and p53 status may help distinguishing well from poorly differentiated neuroendocrine neoplasms (NEN) and may predict response to chemotherapy. Studies correlating Rb/p53 genetic and immunohistochemistry were performed on high-quality frozen samples with high throughput techniques efficient for copy number determination. This situation differs from routine practice in which small deletions may be hard to detect on formalin-fixed paraffin-embedded (FFPE) samples with a gene panel approach.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Biomarkers
Presenting Author: Dr Jerome Cros