Searchable abstracts of presentations at key conferences in endocrinology
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18th European Congress of Endocrinology

Oral Communications

Endocrine Tumours

ea0041oc9.1 | Endocrine Tumours | ECE2016

Study of new tumor suppressor gene (ZNRF3) in adrenocortical carcinoma

Hanin Omeiri , Marthe Weinandts , Lucile Lefevre , Ludivine Drougat , Guillaume Assie , Rabin Marthe Rizk , Jerome Bertherat , Bruno Ragazzon

Introduction: Adrenocortical Carcinoma (ACC) is a rare and aggressive tumor with poor prognosis. Up to now, CTNNB1 (βcatenin) and TP53 mutations were the most frequent alterations identified in ACC. By a combination of genomic approaches, we have recently analyzed a cohort of 122 ACC (European Network for the Study of Adrenal Tumors, ENSAT). This work confirmed recurrent alterations in CTNNB1 and TP53 and revealed new genes not previous...

ea0041oc9.2 | Endocrine Tumours | ECE2016

Role of luteinizing hormone receptor in the ontogeny and progression of adrenocortical tumors in transgenic mice expressing SV40Tag under the inhibin-α promoter

Doroszko Milena , Chrusciel Marcin , Belling Kirstine , Vuorenoja Susanna , Dalgaard Marlene , Leffers Henrik , Bjorn Nielsen H , Huhtaniemi Ilpo , Toppari Jorma , Rahman Nafis

: We analyzed the occurrence of adrenocortical tumors in transgenic mice expressing Simian Virus 40 T antigen (SV40Tag) under the inhibin-α promoter (inhα/Tag) and searched for novel biomarker genes for the tumorigenesis. We studied 2-, 4-, 6-mo-old intact (never forming tumors) and prepubertally gonadectomized (GDX) inhα/Tag mice (developing tumors) and similar groups of wild-type mice as controls. Furthermore, the role of ectopic luteinizing hormone receptor (...

ea0041oc9.3 | Endocrine Tumours | ECE2016

Stressed to death – antioxidant pathway targeting as a novel therapeutic approach in adrenocortical carcinoma

Chortis Vasileios , Taylor Angela E , Doig Craig L , Meimaridou Eirini , Metherell Louise A , Arlt Wiebke , Foster Paul A

Context: Nicotinamide nucleotide transhydrogenase (NNT) is a NADPH-generating mitochondrial proton pump with a central role in mitochondrial antioxidant pathways. Recent studies revealed inactivating NNT mutations in patients with familial glucocorticoid deficiency, indicating a selective susceptibility of the adrenal cortex to NNT deficiency and oxidative stress. Here we explored the potential value of NNT as a therapeutic target in adrenocortical cancer.<p class="abstext...

ea0041oc9.4 | Endocrine Tumours | ECE2016

The truncated somatostatin receptor sst5TMD4 is overexpressed in prostate cancer, where it increases aggressiveness features by regulating key tumor suppressors and oncogenes.

Hormaechea-Agulla Daniel , Manuel Jimenez-Vacas Juan , Ibanez-Costa Alejandro , Gomez-Gomez Enrique , Carrasco-Valiente Julia , Valero Rosa Jose , Moreno Maria M , Culler Michael D , Gahete Manuel D , Jose Requena Maria , Castano Justo P , Luque Raul M

Somatostatin is a pleiotropic neuropeptide that governs multiple biological targets, including tumor cell function, through a family of G protein-coupled receptors with 7-transmembrane domains (TMD), named sst1-5. However, we recently discovered sst5TMD4, an aberrantly spliced, truncated (only 4-TMDs) sst5-variant displaying unique molecular/functional features. sst5TM4 is overexpressed in various endocrine-related tumors exacerbating their malignant characteristics. Here, we ...

ea0041oc9.5 | Endocrine Tumours | ECE2016

Pituicytoma: a neuropathological analysis of 10 samples

Mende Klaus Christian , Matschke Jakob , Buslei Rolf , Buchfelder Michael , Fahlbusch Rudolf , Saeger Wolfgang , Flitsch Joerg

Introduction: Pituicytoma is a rare neoplasm of the sellar region, believed to originate from neurohypophyseal cells. Tumor resection is the primary treatment option, but may remain incomplete due to excessive bleeding of the well vascluarized tumor stroma. Therefore the search for alternative or additional treatment regimens is necessary. In a previous publication in 2012 the presence of VEGF-R was shown in one tumor sample, potentially opening the door for modern treatment o...