A Novel Mutation of MAGEL2 in a Patient with Schaaf-Yang Syndrome and Hypopituitarism

Fecha de publicación: 01/07/2018

Autores de IIS La Fe

• Antonio David Hidalgo Santos

  Autor

• Maria Carmen De Mingo Alemany

  Autor

• Francisca Moreno Macián

  Autor

• Mónica Pilar Roselló Piera

  Autor

• Carmen Orellana Alonso

  Autor

• 

  Francisco Martínez Castellano

  Autor

• Alfonso José Caro Llopis

  Autor

• Sara León Cariñena

  Autor

• Miguel Tómas Vila

  Autor

Grupos

• Investigación Traslacional en Genética

  

  Leader

  Francisco Martínez Castellano

Abstract

Introduction: Schaaf-Yang syndrome (SYS) is caused by truncating point mutations of the paternal allele of MAGEL2, an imprinted gene located in the critical region of Prader-Willi syndrome (PWS). These patients present a phenotype with neurodevelopmental delay, hypotonia, joint contractures, and a particularly high prevalence of autism (up to 75% in affected individuals). The loss of function of MAGEL2 is suggested to contribute to endocrine hypothalamic dysfunction in individuals with PWS. Case Presentation: The current study presented the case of a patient with SYS and a novel de novo truncating mutation of MAGEL2 and phenotypic characteristics typical of this Prader-Willi-like syndrome and also including partial hypopituitarism, hypothyroidism, growth hormone deficiency, and hyperprolactinemia. Conclusions: The clinical and molecular similarities between SYS and PWS suggested the need for a thorough endocrinological follow-up to improve the prognosis and long-term quality of life for patients with SYS.

Keywords

• Schaaf-Yang Syndrome; Growth Hormone; Hypothyroidism