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References OMIM Gene GeneReviews HGMD HGNC
last update : 07-11-2013
Symbol PWLAD
Location 15q11.2
Name Prader-Willi like with autism spectrum disorder
Other name(s) Schaaf-Yang syndrome
Corresponding gene MAGEL2
Other symbol(s) SHFYNG
Main clinical features
  • autism spectrum disorder (ASD), mental retardation and a varying degree of clinical and behavioral features of Prader-Willi, mild intellectual disability
  • neonatal hypotonia and feeding difficulties requiring tube feeding, followed by hyperphagia and absence of satiety, and intellectual disability
  • Genetic determination autosomal dominant
    Function/system disorder mental retardation
    Type MCA/MR
    Gene mutationChromosome rearrangementEffectComments
    various types   truncated protein  
  • functional hemizygosity for MAGEL2, and a truncating mutation on the paternal allele leaves affected individuals without functional expressed MAGEL2 (PMID: 24076603))