Abstract library

129 results for "SDHB loss".
#246 SDHB Loss Predicts Malignancy in Pheochromocytomas/Sympathethic Paragangliomas, but Not Through Hypoxia Signalling
Introduction: To date there is no reliable histopathological marker of malignancy for pheochromocytomas/sympathetic paragangliomas (PCC/PGL). It is well-known that PCC/PGL in the hereditary context of an SDHB germline mutation very often metastasize. The immunohistochemical loss of SDHB expression was recently shown to be a surrogate marker for the presence of an SDH germline mutation in PCC/PGL. SDHB loss is supposed to be tumorigenic via activation of hypoxia signals.
Conference: 8th Annual ENETS Conference (2011)
Category: Basic
Presenting Author: Dr Anja M Schmitt
#264 Alterations of TIMP-3 Gene in Insulinomas and Its Significance
Introduction: Our previous study on insulinoma found allelic loss of 22q12 where suppressor gene TIMP3 located. TIMP3 can inhibit tumor invasion or metastasis, but its clinical implications in insulinoma are unknown.
Conference: 8th Annual ENETS Conference (2011)
Category: Clinical
Presenting Author: Dr Yuan-Jia Chen
Authors: Chen Y J, Zhou C Y, Wu H Y, Liu T H, ...
#700 Comparative Expression Analysis of Chromosome 18 Related miRNAs in Ileal NET with and without Chr18 Loss
Introduction: MicroRNAs (miRs) play important roles in many kinds of biological processes. Because the (partial) loss of one chromosome 18 (Chr18) is a frequent event in ileal NETs (iNETs), we assessed the potential deregulation of miR-expression in these patients.
Conference: 10th Annual ENETS Conference (2013)
Category: Basic Science - Genetics, epigenetics, miRNAs
Presenting Author: Maike Hoffmeister
Keywords: NET, mir-expression
#581 Loss of Succinate Dehydrogenase (SDHB) Expression in Midgut Carcinoids as Prognostic Factor: a New Marker of Personalized Cancer Medicine in Neuroendocrine Tumors?
Introduction: Gene mutations of SDH complex have been involved in the pathogenesis of cancer cells. These mutations are often associated with loss of activity of SDH subunity B and overexpression of HIF-1a, which play a central role in angiogenesis.
Conference:
Category: Basic
Presenting Author: Dr. Massimo Milione
#645 Loss of Succinate Dehydrogenase (SDHB) in Midgut Carcinoids as Prognostic Factor: A New Marker of Personalized Cancer Medicine in Neuroendocrine Tumors?
Introduction: Gene mutations of the succinate dehydrogenase (SDH) complex are involved in the pathogenesis of cancer cells and play a pivotal role in angiogenesis and cell proliferation. The immunoistochemical (IHC) loss of SDHB is a marker of malignancy in pheocromocytomas and paragangliomas.
Conference: 10th Annual ENETS Conference (2013)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Md, PhD Massimo Milione
Keywords: midgut, SDHB
#730 Loss of Chromosome 18 in Neuroendocrine Tumors of the Midgut
Introduction: The genetic alterations in neuroendocrine tumors (NET) of the midgut, in particular of the appendix (aNET), are poorly characterized. The most frequent chromosomal aberration in ileal NET (iNET) is the loss of one chromosome 18. The relevance of this alteration is unclear.
Conference: 10th Annual ENETS Conference (2013)
Category: Basic Science - Genetics, epigenetics, miRNAs
Presenting Author: MD Tobias Henopp
Keywords: chr18
#856 DAXX and ATRX Loss Defines Chromosomal Instability and Poor Outcome in Pancreatic NET
Introduction: Chromosomal Instability (CIN) has been reported in pancreatic neuroendocrine tumors (pNETs) with poor outcome. However, no specific genetic background has been associated with CIN. Whole exome sequencing revealed mutations in DAXX (Death domain associated protein gene) and ATRX (ATR-X gene) in 40% of pNETs. DAXX and ATRX mutations in pNETs are associated with Alternative Lengthening of Telomeres (ALT) activation.
Conference: 11th Annual ENETS Conference (2014)
Category: ...none of the below
Presenting Author: PhD Ilaria Marinoni
Keywords: pNET, Daxx, Atrx, ALT, CIN
#1312 Epigenetic Remodeling upon DAXX and ATRX Loss in Pancreatic Neuro-endocrine tumors (pNETs)
Introduction: DAXX and or ATRX loss occur in 40% of sporadic pNETs. DAXX and ATRX participate in the cell epigenetic status maintenance. Epigenetic changes influence gene expression, function of telomeres and genomic stability. We hypothesize that DAXX/ATRX loss drives tumor progression in pNET through epigenetic changes affecting genomic stability.
Conference: 13th Annual ENETS conference (2016)
Category: Basic Science - Genetics, epigenetics, miRNAs
Presenting Author: Ilaria Marinoni
Keywords: DAXX/ATRX, epigenetic, CIN
#174 Loss of Expression of the DNA Mismatch Repair Proteins MLH1 and MSH2 is Rare in Pancreatic and Small Intestinal Neuroendocrine Tumors
Introduction: Loss of expression of the DNA mismatch repair (MMR) proteins MLH1 and MSH2, which is known to correlate strongly with MSI, has not been well studied in pancreatic or small intestinal NETs.
Conference: 8th Annual ENETS Conference (2011)
Category: Basic
Presenting Author: Dr Daniel Rayson
Authors: Rayson D, Arnason T, Sapp H, Barnes P, ...
#942 Ileal Neuroendocrine Well-Differentiated Tumors: Prognostic factors with Focus on Loss of Succinate Dehydrogenase (SDHB) Expression
Introduction: Ileal Neuroendocrine Well-Differentiated Tumors (INWDT) are the most common neuroendocrine neoplasms in the gastrointestinal tract. Gene mutations of SDH complex drive pathogenesis of cancer cells through their role in angiogenesis and cell proliferation.
Conference: 11th Annual ENETS Conference (2014)
Category: Pathology, grading, staging
Presenting Author: MD, PhD Massimo Milione