Abstract library

45 results for "Cell".
#2774 Metastatic Merkel Cell Carcinoma Associated Paraneoplastic Hyponatraemia: Response to Avelumab
Introduction: Merkel cell carcinoma (MCC) is rare, encompassing primary cutaneous neuroendocrine carcinoma.It has an aggressive natural history, and exhibits high response rates to radiotherapy & chemotherapy but often of short duration.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Case reports
Presenting Author: Dr Elspeth Saunders
Authors: Saunders E, Demirel S, Kim S, Skelly R, ...
#2811 Improving Diagnosis Times as Part of the Transformation of the South Wales NET Service
Introduction: Transformation of the South Wales NET service in late 2017 introduced new specialised staff, gastroenterology-led clinics and improved MDTs with a particular emphasis on educating referring specialties. This has led to improved overall patient experience, satisfaction and quality of life. NETs are recognised world-wide for their lengthy diagnosis times.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Epidemiology/Natural history/Prognosis - Registries, nationwide and regional surveys
Presenting Author: Kapish Amin
#2898 Novel Preclinical Models of Small Bowel Neuroendocrine Tumors for Drug Screening
Introduction: The incidence of neuroendocrine tumors (NETs) from the small bowel (SBNETs) has increased markedly over the past several decades. Many patients with these tumors present with metastatic disease, and research into new treatment options for these tumors have been hindered by the limited number of patient-derived SBNET cell lines and in vivo models available for drug testing.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - In vitro models, tumor growth, CTCs
Presenting Author: Assistant Profes Po Hien Ear
Authors: Ear P H, Tran C, Li G, Kaemmer C, ...
#2739 Epigenetic Landscape of Pancreatic Neuro-Endocrine Tumors Reveals Distinct Cells of Origin and Means of Tumor Progression
Introduction: Pancreatic Neuroendocrine Tumors (PanNETs) arise from cells of the Islets of Langerhans. The majority of PanNETs are non-functional and their cell of origin cannot be defined analysing specific hormone production. Cell of origin assessment has proven importance to identify risk factors, prevent tumour development, and tailor treatment in many malignancies. Recent data on super-enhancer signatures has suggested a potential origin of PanNET from α- or β-cells. We and others have shown that distinct epigenetic profiles assessed by DNA methylation (DNAme) characterize genomic and prognostic groups of PanNET.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: Annunziata Di Domenico
#2844 Rectal Neuroendocrine Tumor with Chromogranin Expression Is Associated with Aggressive Clinical Behavior and Worse Prognosis
Introduction: Although rectal neuroendocrine tumors (NETs) with L-cell phenotype and small tumor size generally had better clinical behavior, the new 2019 WHO classification classified all rectal NETs are malignant without considering L-cell phenotype and small tumor size. Therefore, identifying biomarkers of rectal NETs is important to stratify the clinical behavior of rectal NETs.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Signaling pathways, receptors, biomarkers
Presenting Author: M.D. Jisup Kim
Authors: Kim J, Kim J Y, Oh E H, Yang D H, ...
#2862 Concurrent Metastatic Pulmonary Neuroendocrine Tumor and Pituitary Macroadenoma
Introduction: The coexistence of a sellar mass in a patient with a neuroendocrine tumor, while rare, can paint the clinical picture of either a genetic syndrome, most notably multiple endocrine neoplasia syndrome type 1(MEN1) or pituitary metastasis recently more frequent probably due to the longer survival of cancer patients.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Case reports
Presenting Author: MD, PhD, Lecture Carmen Sorina Martin
#106 Gastroenteropancreatic neuroendocrine tumors: single institution clinicopathological study
Introduction: Neuroendocrine cells are widely distributed throughout the body, and neoplasms from these dispersed cells can arise at many sites. They are distinguished into two broad categories: 1) Tumors identified as small cell lung carcinomas with biology and natural history of a high-grade malignancy and characteristics of small cell undifferentiated or anaplastic appearance by light microscopy. The WHO categorizes these tumors as poorly-differentiated neuroendocrine carcinomas; 2) Well-defined neuroendocrine tumors (NETs) with variable, but most lyindolent biologic behavior and characteristic well-differentiated histologic features. The majority arise in the gastrointestinal tract and collectively they are referred as gastroenteropancreatic neuroendocrine tumors (GEP/NETs). They include carcinoid tumors, pancreatic islet cell tumors (gastrinoma, insulinoma, glucagonoma, VIPoma, somatostatinoma), paragangliomas, pheochromocytomas, and medullary thyroid carcinomas. The WHO classifies the GEP/NETs as well-differentiated NETs (carcinoid tumors) if they are noninvasive and have benign behavior or uncertain malignant potential. In contrast, GEP/NETs with characteristics of low-grade malignancy with invasion of the muscularis propria or beyond, or metastases, are characterized as well-differentiated neuroendocrine carcinomas (malignant carcinoids). Pancreatic islet cell tumors, whether functioning or not, are classified as well-differentiated NETs or well-differentiated neuroendocrine carcinomas, due to the (depending on) histologic characteristics. The WHO classification for gastroenteropancreatic NETs based on stage (ie size and presence of metastases) and grade (mitotic rate, perineural and lymphovascular invasion, Ki-67 proliferative index) categorizes them as well-differentiated NETs, e.g., carcinoid tumors, or as well-differentiated neuroendocrine carcinomas.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Michael M. Vaslamatzis
#141 Incidence of second primary tumors in patients with neuroendocrine tumors
Introduction: Based on epidemiological data from SEER 1950-1999, 22.4% cases of non-carcinoid second primary tumors have been described in patients diagnosed with neuroendocrine tumors. The incidence of this type of tumors varies, depending on the series assessed.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: MD Juan Manuel OConnor
Authors: Pesce V, OConnor J, Mendez G, Bestani C, ...
#333 Sporadic Hypercalcitoninemia: Thyroid Medullary carcinoma, Autoimmune Thyroiditis or GLP-1 Agonists’ Effect?
Introduction: Glucagon-like peptide 1 (GLP-1) receptor agonists’ stimulated C-cell hyperplasia and tumors in rodents, but not in humans. Calcitonin also increased in autoimmune thyroid disease.
Conference: 8th Annual ENETS Conference (2011)
Category: Clinical
Presenting Author: Dr. Raluca A. Trifanescu
#361 Rats heterozygous for the MENX-associated p27 mutation develop a MEN phenotype
Introduction: MENX is a spontaneous multiple endocrine neoplasia syndrome in the rat showing phenotypic overlap with both MEN1 and MEN2 human syndromes. MENX is caused by a biallelic germline mutation of the Cdkn1b (p27) gene and it was described as recessively inherited. CDKN1B alterations have been also identified in human patients with MEN1-like features but no MEN1 mutations (MEN4).
Conference:
Category: Basic
Presenting Author: PhD Sara Molatore
Authors: Molatore S, Neff F, Wiedemann T, Lee M, ...
Keywords: MEN, p27, MTC