Abstract library

385 results for "low to intermediate".
#2117 Neuroendocrine Tumors: An Australian Experience
Introduction: Neuroendocrine tumours (NETs) in Australia are rare, but are rising in incidence.
Conference: 15th Annual ENETS conference (2018)
Category: Epidemiology/Natural history/Prognosis- Registries, nationwide and regional surveys
Presenting Author: Dr Vivek Ashoka Menon
#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
#205 Integrated Genome-Wide DNA Methylation and mRNA Expression Analysis of Pancreatic NETs Identifies Differential Activation of the Hypoxia Inducible Factor (HIF) Pathway Between Low and Intermediate Grade Tumors
Introduction: This is the first study to integrate DNA methylation and mRNA expression analysis in NETs. It is a powerful approach with which to identify disrupted biological pathways in NET pathogenesis.
Conference: 8th Annual ENETS Conference (2011)
Category: Basic
Presenting Author: Dr Christina Thirlwell
#1158 A Phase II Study of Everolimus in Patients with FDG-PET Positive Intermediate Grade (Ki67 3-20%) Pancreatic Neuroendocrine Tumor
Introduction: The RADIANT-3 trial showed Everolimus (EV), as active in patients (pts) with progressive well/intermediate grade PNETs. Intermediate/grade 2 (Ki67 3-20%) PNETs have variable biology. FDG-PET avidity is an independent negative factor for survival, consistent with aggressive disease biology- but such imaging is not used to select treatment as in the case of the RADIANT 3 trial.
Conference: 12th Annual ENETS Conference (2015)
Category: Medical treatment - Targeted therapies
Presenting Author: ASSOC PROF Michael Michael
Authors: Michael M, Pavlakis N, Wyld D, Link E, ...
Keywords: everolimus, FDG-PET
#440 The First Neuroendocrine Tumor Methylome Using Methylation-Specific Immunoprecipitation Followed by Second Generation Sequencing – MeDIP-seq
Introduction: Recently, the first cancer methylomes have been created which identified differential methylation at CpG island-shores (2kb upstream of CpG islands) to be of particular importance in the tumourigenic process.
Conference: 9th Annual ENETS Conference (2012)
Category: Basic
Presenting Author: Dr Christina Thirlwell
Authors: Thirlwell C, Sasmaz S, Dibra H, Feber A, ...
#834 Nuclear Imaging in Intermediate Grade Neuroendocrine Tumors
Introduction: Early diagnosis and grading is essential to the treatment decision-making in neuroendocrine tumors. Conventionally, proliferation rate (Ki-67) level is used for the grading of NET. Ga-68 SMS-R PET/CT is the imaging method of choice for the detection of unknown primary neuroendocrine tumors. It is very sensitive in well-differentiated tumors (Ki-67 < 2%). Poorly and undifferentiated tumors having Ki-67 greater than 20% are primarily responsible for false negativity of Ga-68 SMS-R PET/CT. In those patients, FDG-PET is performed to localize the site of the primary tumor.
Conference: 11th Annual ENETS Conference (2014)
Category: Clinical cases/reports
Presenting Author: Dr. Zeinab A Abou Yehia
#161 Low Dose Multiple Cycle (LD/MT) Peptide Receptor Radionuclide Therapy: a new concept for the treatment of well-differentiated metastatic neuroendocrine tumors
Introduction: It has been shown experimentally that low dose radiation can effectively kill slow growing cancer cells. Also, external beam radiation therapy applies a fractionated delivery of radiation dose to reduce toxicity with equal or even better therapeutic efficacy.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr. Vikas Prasad
#845 Ki-67 Index as a Biomarker of Response to Cytotoxic Chemotherapy
Introduction: Chemotherapy (CT) is widely used for neuroendocrine tumors (NET) but there are no validated biomarkers to predict response. The Ki-67 proliferation index has been proposed as a means of selecting patients for CT but robust data are lacking.
Conference: 11th Annual ENETS Conference (2014)
Category: Medical treatment - Chemotherapy
Presenting Author: Dr Alexa Childs
Authors: Childs A, Kirkwood A, Lee A, Caplin M, ...
Keywords: chemotherapy, Ki-67
#111 Atypical lung carcinoid tumor metastatic to endocrine glands and bone marrow
Introduction: Bronchopulmonary neuroendocrine tumors (BP-NETs) comprise 20% of all lung cancers. Typical low grade carcinoid tumors (TC) represent the majority of BP-carcinoids. Intermediate grade atypical carcinoid tumors (AC) are less often encountered but more aggressive. Although metastatic dissemination to mediastinal lymph nodes, liver, skeleton and central nervous system (CNS) is common, involvement of the endocrine glands has rarely been reported.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Vasiliki Daraki
#1026 Systemic Therapy in Advanced Gastroenteropancreatic Neuroendocrine Tumors (GEP-NET) and Ki Index 5-10%
Introduction: Phase III trials of sunitinib, everolimus and octreotide lar confirmed that these drugs improved progression-free survival (PFS) in well-differentiated PNET, low/intermediate grade pNET and well-differentiated midgut NETs, respectively. CLARINET is the 1st phase III study that showed PFS benefit of SSA, lanreotide, in both P- and midgut NET and in Ki-67 5-10%.
Conference: 11th Annual ENETS Conference (2014)
Category: Medical treatment - Targeted therapies
Presenting Author: PhD Paula J Fonseca