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55th Annual ESPE

Paris, France
10 Sep 2016 - 12 Sep 2016

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Paris, France: 10-12 September 2016 Further information

hrp0086fc3.1 | Pituitary | ESPE2016

The MAPK Effector BRAF is Essential for the Integrity of Hypothalamic-Pituitary Development and Deregulation of this Pathway Causes Congenital Hypopituitarism

Gregory Louise , Kypranou Nikolina , Besser Rachel , Vignola Lilliana , Temple Karen , Davis Justin , Gevers Evelien , Dattani Mehul , Gaston-Massuet Carles

Background: BRAF is a component of the RAS/MAPK signalling pathway; germline mutations in components of this pathway are associated with congenital abnormalities such as Cardio-Facio-Cutaneous (CFC), Noonan and Costello Syndromes. These syndromes, known as RASopathies, are characterised by variably penetrant central nervous system, cardiac and facial abnormalities. Importantly, short stature and delayed puberty have been associated with these syndromes, as have featur...

hrp0086fc3.2 | Pituitary | ESPE2016

Spectrum of LHX4 Mutations in a Cohort of 510 Patients with Hypopituitarism

Cohen Enzo , Collot Nathalie , Rose Sophie , Dastot Florence , Duquesnoy Philippe , Copin Bruno , Bertrand Anne-Marie , Brioude Frederic , Hilal Latifa , Leger Juliane , Maghnie Mohamad , Oliver-Petit Isabelle , Polak Michel , Touraine Philippe , Sobrier Marie-Laure , Amselem Serge , Legendre Marie

Background: Mutations in the gene encoding LHX4, a homeodomain-containing factor with two LIM domains, are responsible for dominant hypopituitarisms with incomplete penetrance and variable expressivity. To date, only 14 unambiguous LHX4 mutations have been reported. Among those cases, 12 had an absent or ectopic posterior pituitary (EPP) and/or an abnormal sella turcica.Objective and hypotheses: To i) assess the contribution of LHX4 in combined pituitary...

hrp0086fc3.3 | Pituitary | ESPE2016

Contribution of GLI2 Mutations to Pituitary Deficits and Delineation of the Associated Phenotypic Spectrum

Cohen Enzo , Pham Aurelie , Dastot Florence , Collot Nathalie , Afenjar Alexandra , Carel Jean-Claude , Furioli Jean , Leger Juliane , Leheup Bruno , Mignot Brigitte , Naud-Saudreau Catherine , Nivot Sylvie , Polak Michel , Rappaport Raphael , Simon Dominique , Sizonenko Pierre , Vincent-Delorme Catherine , Zung Amnon , Amselem Serge , Legendre Marie

Background: GLI2 is a zinc-finger transcription factor of the SHH signaling pathway, expressed during ventral forebrain and pituitary development. GLI2 mutations account for microforms of dominant holoprosencephaly. So far, only 15 unambiguous mutations were found in hypopituitarism –essentially combined pituitary hormone deficiency (CPHD)– frequently associated with holoprosencephaly-like malformations and/or polydactyly.Objective and...

hrp0086fc3.4 | Pituitary | ESPE2016

A Novel Mutation in Eukaryotic Translation Initiation Factor 2 Subunit 3 (EIF2S3) is Associated with X-Linked Hypopituitarism and Glucose Dysregulation

Gregory Louise C. , Williams Hywel , Rahman Sophia , Ferreira Carolina B. , Alatzoglou Kyriaki S. , Kapoor Ritika R. , Hussain Khalid , Gaston-Massuet Carles , Kelberman Daniel , Qasim Waseem , Dattani Mehul T.

Background: A mutation in EIF2S3 (NM_001415; Xp22.11) was previously associated with microcephaly and developmental delay in a single pedigree. EIF2S3 encodes the eukaryotic translation initiation factor 2 subunit 3 (eIF2γ), the largest of three EIF2 subunits. EIF2 initiates protein synthesis by forming a ternary complex with GTP and initiator methionyl-tRNA which then binds to the 40S ribosomal subunit, enabling scanning of mRNA from the 5′ end to...

hrp0086fc3.5 | Pituitary | ESPE2016

Septo-optic Dysplasia Spectrum: Pubertal Features of a Large Cohort of Children and Adolescents with Septo-optic Dysplasia, Congenital Hypopituitarism and Optic Nerve Hypoplasia from a Single Centre

Cerbone Manuela , Guemes Maria , Improda Nicola , Dattani Mehul T

Background: Children with septo-optic dysplasia (SOD) and related disorders can present with either hypogonadotropic hypogonadism or precocious puberty. This phenotypic variability remains unexplained.Objective and hypotheses: To compare pubertal characteristics of SOD with isolated congenital hypopituitarism (CPHD) and optic nerve hypoplasia (ONH).Method: Retrospective longitudinal data collection from 259 patients with: SOD (...

hrp0086fc3.6 | Pituitary | ESPE2016

Pegvisomant is More Effective in Stunting Growth than Somatostatin Analogs in Childhood Acromegaly/Gigantism

Thomas-Teinturier Cecile , Simonin Gilbert , Vaczlavik Anna , Ajaltouni Zaina , Gaillard Stephan , Bougneres Pierre , Chanson Philippe

Background: We describe our experience in medical therapy for invasive somatotroph pituitary macroadenomas in 8 children or adolescents presenting with acromegaly/gigantism, in terms of growth and IGF-I levels control.Patients: Eight children, aged 5 to 17 years (median 12.4 years), presented with growth hormone (GH) hypersecretion related to somatotroph pituitary macroadenomas with cavernous sinus invasion in 6/8. Genetic testing revealed AIP mutation i...