hrp0092p1-257 | Pituitary, Neuroendocrinology and Puberty (1) | ESPE2019

Fetal and Post-Natal Growth are Impaired in Children with Deletions of the GH1 Gene: Description of a Cohort of 14 Patients

Darvish Elsa , Legendre Marie , Netchine Irene , Amselem Serge , Brioude Frederic

Data on the birth parameters of patients with growth hormone deficiency are contradictory; recent studies suggest that congenital growth hormone deficiency is associated with impaired fetal growth. The main objective of this study was to describe the birth parameters of children with GH-1 gene deletion.This study included 13 patients (of 10 families) for whom a homozygous (or compound heterozygous) deletion of the entire GH1 gene has been identi...

hrp0086rfc14.1 | Growth : Mechanisms | ESPE2016

Important Contribution of GH, GHRHR and GHSR Mutations in Isolated Growth Hormone Deficiency with a Normal Location of the Posterior Pituitary –Functional Characterization of New Variants

Cohen Enzo , Sobrier Marie-Laure , Dastot Florence , Collot Nathalie , Rose Sophie , Soleyan Aude , Vie-Luton Marie-Pierre , Duquesnoy Philippe , Copin Bruno , Amselem Serge , Legendre Marie

Background: Although growth hormone (GH) and the GH releasing hormone receptor (GHRHR) are known as etiologic factors in non-syndromic isolated growth hormone deficiency (IGHD), very few mutations have been identified in this rare condition (accounting for only 6–12.5% and 0–6.7% of IGHD cases depending on studies). The functional consequences of the identified variants have rarely been assessed.Objective and hypotheses: To assess the contribut...

hrp0094p2-253 | Growth hormone and IGFs | ESPE2021

GROWPATI Study: Growth and puberty description pattern in a well-characterized cohort of patients with growth retardation due to severe primary IGF1 deficiency

Stoupa Athanasia , Flechtner Isabelle , Viaud Magali , Pinto Graziella , Samara-Boustani Dinane , Thalassinos Caroline , Netchine Irene , Brioude Frederic , Amselem Serge , Legendre Marie , Polak Michel ,

Background: Severe primary insulin-growth factor-1 (IGF1) deficiency (SPIGF1D) is a rare cause of growth delay. The diagnostic criteria include age- and sex-dependent low basal IGF1 concentration (<2.5th percentile), height SDS < -3SDS, absence of growth hormone deficiency and of any secondary causes of growth failure.Objectives: 1) Report the growth pattern and pubertal status 2) Identify the molecula...

hrp0095p2-144 | GH and IGFs | ESPE2022

Growpati Study: Clinical and genetic characterization of a cohort of patients with short stature due to severe primary IGF1 deficiency

Stoupa Athanasia , Flechtner Isabelle , Viaud Magali , Pinto Graziella , Samara-Boustani Dinane , Gonzalez-Briceno Laura , Thalassinos Caroline , Amselem Serge , Legendre Marie , Netchine Irene , Brioude Frederic , Polak Michel

Background: Severe primary insulin-growth factor-1 (IGF1) deficiency (SPIGF1D) is a rare cause of short stature. Diagnosis is based on low basal IGF1 concentration, short stature, normal or elevated growth hormone concentrations and absence of any secondary causes of growth failure. Thanks to advances in next-generation sequencing (NGS) technologies, genetic etiology of SPIGF1D is expanding.Objectives: • Identify th...

hrp0092p1-80 | GH and IGFs | ESPE2019

Clinical Characteristics, Puberty Pattern and Adult or Near-adult-height Data in a Group of Patients with Growth Failure due to Severe Primary IGF-1 Deficiency (GROWPATI Study)

Stoupa Athanasia , Lorraud Christine , Flechtner Isabelle , Viaud Magali , Pinto Graziella , Samara-Boustani Dinane , Thalassinos Caroline , Brioude Frédéric , Netchine Irène , Amselem Serge , Legendre Marie , Polak Michel

Background: Severe primary insulin-growth factor-1 (IGF-1) deficiency (SPIGF1D) is a rare cause of growth retardation. Diagnostic criteria include age- and sex-dependent low basal IGF-1 levels (<2.5th percentile), height ≤ -3SDS, absence of growth hormone deficiency and of any secondary causes of growth failure.Objectives: Description of pubertal onset and growth spurt, data on adult or near-adult-he...

hrp0089p2-p207 | GH &amp; IGFs P2 | ESPE2018

Clinical and Preliminary Molecular Description of a Cohort of Patients with Growth Retardation due to Severe Primary IGF1 Deficiency (GROWPATI Study)

Stoupa Athanasia , Viaud Magali , Flechtner Isabelle , Pinto Graziella , Samara-Boustani Dinane , Thalassinos Caroline , Briceno Laura Gabriela Gonzalez , Beltrand Jacques , Netchine Irene , Brioude Frederic , Legendre Marie , Amselem Serge , Polak Michel

Background: Severe primary insulin-growth factor-1 (IGF1) deficiency (SPIGF1D) is a rare cause of growth retardation. Diagnostic criteria include age- and sex-dependent low basal IGF1 levels (<2.5th percentile), height ≤ −3SDS, absence of growth hormone (GH) deficiency and of any secondary causes of growth failure.Objectives: Phenotypic description, follow-up and molecular studies in a cohort of patients diagnosed with growth f...

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...

hrp0089fc9.2 | Pituitary, neuroendocrinology and Puberty 1 | ESPE2018

Contribution of Functionally Assessed GHRHR Mutations to Idiopathic Isolated Growth Hormone Deficiency in a Cohort of 312 Unrelated Patients

Cohen Enzo , Belkacem Sabrina , Fedala Soumeya , Collot Nathalie , Khallouf Eliane , Dastot Florence , Polak Michel , Duquesnoy Philippe , Brioude Frederic , Rose Sophie , Viot Geraldine , Soleyan Aude , Carel Jean-Claude , Sobrier Marie-Laure , Chanson Philippe , Gatelais Frederique , Heinrichs Claudine , Kaffel Noureddine , Coutant Regis , Erdeve Şenay Savaş , Aycan Zehra , Thalassinos Caroline , Lyonnet Stanislas , Şıklar Zeynep , Berberoglu Merih , Brachet Cecile , Amselem Serge , Legendre Marie

Purpose: Isolated growth hormone deficiency (IGHD) is a rare condition mainly caused by mutations in GH1. The aim of this study was to assess the contribution of GHRHR mutations to IGHD in a very large cohort of patients.Methods: All GHRHR coding exons and flanking intronic regions were sequenced in 312 unrelated patients with non-syndromic IGHD. Functional consequences of all newly identified missense variants were assessed <e...

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...

hrp0086rfc14.2 | Growth : Mechanisms | ESPE2016

Contribution of GHR and IGFALS Mutations to Growth Hormone Resistance – Identification of New Variants and Impact on the Inheritance Pattern

Legendre Marie , Dastot Florence , Collot Nathalie , Duquesnoy Philippe , Cohen Enzo , Sobrier Marie-Laure , Adiceam Paola , Anderson Donald , Baron Sabine , Cabrol Sylvie , Callewaert Bert , Cartigny Maryse , Craen Margarita , Crock Patricia , Ladjouze Asmahane , Lazea Cecilia , Polak Michel , Savendahl Lars , Touzani Asmae , Amselem Serge

Background: Bi-allelic GHR mutations are classically responsible for Laron syndrome, a severe growth hormone (GH) resistance syndrome. A few GHR missense mutations have also been implicated in mild GH resistance or idiopathic short stature. IGFALS mutations are responsible for recessive or semi-dominant short stature with normal GH provocative test contrasting with extremely low IGF-I levels.Objective and hypotheses: To assess the contribution of GHR and...