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...

hrp0089fc9.3 | Pituitary, neuroendocrinology and Puberty 1 | ESPE2018

Mutations in MAGEL2 and L1CAM are Associated with Congenital Hypopituitarism and Arthrogryposis

Gregory Louise C , Pratik Shah , Sanner Juliane RF , Arancibia Monica , Hurst Jane , Jones Wendy D , Spoudeas Helen , Le Quesne Stabej Polona , Ocaka Louise , Loureiro Carolina , Martinez-Aguayo Alejandro , Williams Hywel , Dattani Mehul T

Background: Congenital hypopituitarism (CH), involving deficiencies in one or more anterior pituitary hormones, is rarely observed in combination with severe joint contractures, termed arthrogryposis. Schaaf-Yang syndrome (SHFYNG), which has phenotypic overlap with Prader-Willi syndrome, may be associated with arthrogryposis. L1 syndrome, a group of X-linked disorders including hydrocephalus and spasticity of the lower limbs, may also present with generalized contractures in r...

hrp0094p2-406 | Sex differentiation, gonads and gynaecology or sex endocrinology | ESPE2021

ZSWIM7 is associated with human female meiosis and familial primary ovarian insufficiency

McGlacken-Byrne Sinéad M , Le Quesne Stabej Polona , Del Valle Torres Ignacio , Ocaka Louise , Gagunashvili Andrey , Crespo Berta , Moreno Nadjeda , James Chela , Bacchelli Chiara , Dattani Mehul , Williams Hywel J , Kelberman Dan , Achermann John C , Conway Gerard S

Background: Primary ovarian insufficiency (POI) affects 1% of women and is associated with significant medical consequences. In approximately 10% of cases, POI presents early with absent puberty or primary amenorrhoea. A genetic cause for POI can be found in up to 30% of women. Identified genes often relate to the complex biological processes occurring in fetal life which underpin normal ovary development and function in later adulthood.Objective: We aim...

hrp0094fc8.2 | Neuroendocrinology | ESPE2021

Recessive PRDM13 mutations result in hypogonadotropic hypogonadism and cerebellar hypoplasia

Gregory Louise C. , Whittaker Danielle E , Oleari Roberto , Quesne-Stabej Polona Le , Williams Hywel J. , UCL GOSgene , Torpiano John G , Formosa Nancy , Cachia Mario J. , Field Daniel , Lettieri Antonella , Ocaka Louise , De Martini Lisa Benedetta , Rajabali Sakina , Riegman Kimberley L. , Paganoni Alyssa J.J. , Chaya Taro , Robinson Iain C.A.F. , Furukawa Takahisa , Cariboni Anna , Basson M. Albert , Dattani Mehul T. ,

Three patients from two unrelated families in Malta; one consanguineous (siblings: Patient 1, male and Patient 2, female) and one non-consanguineous (Patient 3, male), manifested hypogonadotropic hypogonadism with delayed puberty, intellectual disability, scoliosis, and ataxia with cerebellar hypoplasia on MRI. GnRH tests revealed low peak LH and FSH concentrations in the patients: Patient 1; LH 2.3 IU/L, FSH 4.4 IU/L (14.3y), Patient 2; LH 3.6 IU/L, FSH 6.4 IU/L (12.5y), Pati...