Searchable abstracts of presentations at key conferences in endocrinology

ea0049oc8.1 | Neuroendocrinology | ECE2017

Elucidating the molecular mechanisms underlying AIP dependent tumorigenesis

Bogner Eva-Maria , Daly Adrian F. , Beckers Albert , Atkinson Michael J. , Pellegata Natalia S.

Pituitary adenomas (PAs) are benign neoplasms that comprise 10–20% of all intracranial tumors. Mutations in the aryl hydrocarbon receptor interacting protein (AIP) have been identified to cause a small subset of hereditary PAs. To study the mechanisms of tumor formation in patients with AIP-mutated PAs we conducted a miRNA array analysis comparing AIP-mutated PAs with AIP-wild type PAs. We found a novel and specific set of miRNAs differentially expressed between the two g...

ea0037ep784 | Pituitary: clinical | ECE2015

Recurrence of GH-secreting pituitary adenomas during puberty in children with germline AIP mutations: a clinical challenge

Filipponi Silvia , Esposito Vincenzo , Daly Adrian F , Beckers Albert , Jaffrain-Rea Marie-Lise

Germline AIP mutations (AIPmut) predispose to young onset somatotroph pituitary adenomas (GHPA) and gigantism. AIPmut GHPA are often aggressive and resistant to pharmacological treatment, which may be especially challenging in the paediatric setting. We report our experience with two young Italian AIPmut male patients with incipient gigantism due to childhood pituitary macroadenomas, who both experienced recurrent ...

ea0041ep615 | Endocrine tumours and neoplasia | ECE2016

Genetic predisposition to breast cancer occurring in a male-to-female transsexual patient

Potorac Iulia , Corman Vinciane , Manto Florence , Dassy Sarah , Segers Karin , Thiry Albert , Bours Vincent , Daly Adrian F , Beckers Albert

Introduction: Breast cancer affects less than 1% of all male cancer patients. In 5–20% of cases, genetic predisposition is involved, mostly due to mutations of the BRCA2 gene. Hormonal imbalance between oestrogens and androgens is another predisposing factor. Male-to-female (MtF) transsexual patients usually undergo long-term cross-sex hormone therapy, which could expose them to higher risks of developing hormonally-dependent cancers.We rep...

ea0041ep889 | Pituitary - Clinical | ECE2016

Combined treatment with octreotide LAR and pegvisomant in patients with gigantism – acromegaly: clinical evaluation and genetic screening

Rostomyan Liliya , Mangupli Ruth , Castermans Emilie , Caberg Jean-Hubert , Camperos Paul , Cuauro Elvia , Bours Vincent , Daly Adrian F , Beckers Albert

Pituitary gigantism is a rare condition caused by growth hormone secreting lesions, where treatment is usually challenging, especially in cases with genetic predisposition. Aim: We studied a gigantism cohort from Venezuela for genetic defects and their response to treatment. Subjects: 160 somatotropinoma patients were evaluated at the University hospital (from 1985–2015); eight (6M) were diagnosed with acrogigantism and underwent genetic analysis including aCGH for Xq26.3...

ea0040oc7 | (1) | ESEBEC2016

Bifocal intracranial germinoma presenting as adipsic diabetes insipidus

Potorac Iulia , Kreutz Julie , Bonneville Jean-Francois , Lutteri Laurence , Martin Didier , Tshibanda Luaba , Daly Adrian F , Beckers Albert

Introduction: Intracranial germ-cell tumors (GCT) are rare, occurring in less than 4% of pediatric patients. Histologically, they are divided into several types, among which germinomatous GCTs represent over 50% of cases. Depending on their location, GCTs usually present with symptoms of intracranial hypertension for pineal lesions, whereas suprasellar ones lead to visual disturbances or pituitary hormonal defects.We present the case of a bifocal intracr...

ea0026p655 | Clinical case reports | ECE2011

Impact of two novel mutations of calcium sensing receptor (CaSR) gene on calcium metabolism: two clinical case reports

Livadariu Elena , Auriemma Renata Simona , Rydlewski Catherine , Vandeva Silvia , Thonnard Anne Sophie , Betea Daniela , Daly Adrian F , Beckers Albert

Disorders of calcium metabolism arise in a familial or sporadic setting. The resulting hypo- or hypercalcemia can induce serious clinical features. Calcium sensing receptor (CaSR) plays a key role in maintaining this balance and its molecular investigation is useful to determine the nature of a certain condition or to choose the appropriate therapeutic approach.In the present study we reported two clinical cases. A 16-year-old patient had a mild hypercal...

ea0022oc6.5 | Bone | ECE2010

The ratio of PTH as measured by third and second generation assays as a marker for parathyroid carcinoma

Cavalier Etienne , Daly Adrian F , Betea Daniela , Delanaye Pierre , Stubbs Phil , Bradwell Athur R , Chapelle Jean-Paul , Beckers Albert

Background: Parathyroid carcinoma (PCa) is a rare disease that can be difficult to differentiate initially from benign parathyroid adenoma. PCa over-secrete the amino form of parathyroid hormone (PTH), which is recognized by 3rd generation but not by 2nd generation (‘intact’) PTH assays. In normal individuals, the 3rd generation/2nd generation PTH ratio should always be <1.Material and methods: We studied the utility of the 3rd generation/2...

ea0044p167 | Neuroendocrinology and pituitary | SFEBES2016

Polymorphism or mutation? – The role of the R304Q missense AIP mutation in the predisposition to pituitary adenoma

Mothojakan Nadira B , Ferrau Francesco , Dang Mary N , Barlier Anne , Chanson Philippe , Occhi Gianluca , Daly Adrian F , Schofl Christof , Dal Jakob , Gadelha Monica R , Ludman Mark , Kapur Sonal , Iacovazzo Donato , Korbonits Marta

Introduction: Heterozygous mutations in the AIP gene are associated with young-onset pituitary adenomas while homozygous loss of AIP in animal models is lethal. As early diagnosis could lead to better outcomes, family members of AIP mutation-positive patients need follow up. The R304Q variant is commonly described as pathogenic based on clinical assessment. However, it is also present in the general population (minor-allele-frequency (MAF) 0.0007&#15...

ea0037s11.1 | Hot topics and IESP symposia | ECE2015

X-linked acro-gigantism (X-LAG): a new form of infant-onset pituitary gigantism

Trivellin Giampaolo , Daly Adrian F. , Faucz Fabio R. , Yuan Bo , Rostomyan Liliya , Larco Darwin O. , Bjelobaba Ivana , Leal Leticia F. , Schernthaner-Reiter Marie Helene , Dimopoulos Aggeliki , Chittiboina Prashant , Choong Catherine S. , Kamenicky Peter , Wu T. John , Costanzi Stefano , Feldman Benjamin , Stojilkovic Stanko S. , Lupski James R. , Beckers Albert , Stratakis Constantine A.

Introduction: Pituitary gigantism is a rare disorder caused by GH-secreting lesions.Aim: We studied gigantism for genetic defects.Methods: We performed genome-wide analyses in 46 patients with gigantism and 248 patients with acromegaly.Results: We detected a novel microduplication at chromosome Xq26.3 in two unrelated kindreds and 13 sporadic cases de novo. All patients had disease onset before five ...

ea0032p846 | Pituitary – Clinical (<emphasis role="italic">Generously supported by IPSEN</emphasis>) | ECE2013

Characteristics of patients with pituitary gigantism: results of an international study

Rostomyan Liliya , Daly Adrian F. , Tichomirowa Maria , Naves Luciana A. , Shah Nalini , Chanson Philippe , Zacharieva Sabina , Stratskis Constantine A , Neggers Sebastian , Holdaway Ian , Stalla Gunter K. , Pronin Vyacheslav , Maiter Dominique , Bertherat Jerome , Colao Annamaria , Ilovaiskaya Irena , Ferone Diego , Zacharin Margaret , Salvatori Roberto , Beckers Albert

Aim: To analyse a large series of patients with pituitary gigantism.Materials and methods: We included in this multicentre study 158 patients (129 males) with pituitary adenoma (PA) or hyperplasia and current/previous abnormal, excessively rapid growth velocity for age or a final height greater than 2 SD above normal for their population. Data of patients were systematically recorded in case report forms.Results: The...