Intractable & Rare Diseases Research
Online ISSN : 2186-361X
Print ISSN : 2186-3644
ISSN-L : 2186-3644
The neurobiology of the Prader-Willi phenotype of fragile X syndrome
Zukhrofi MuzarReymundo LozanoAlexander KolevzonRandi J. Hagerman
Author information

2016 Volume 5 Issue 4 Pages 255-261


Fragile X syndrome (FXS) is the most common inherited cause of intellectual disability and autism, caused by a CGG expansion to greater than 200 repeats in the promoter region of FMR1 on the bottom of the X chromosome. A subgroup of individuals with FXS experience hyperphagia, lack of satiation after meals and severe obesity, this subgroup is referred to have the Prader-Willi phenotype of FXS. Prader-Willi syndrome is one of the most common genetic severe obesity disorders known and it is caused by the lack of the paternal 15q11-13 region. Affected individuals suffer from hyperphagia, lack of satiation, intellectual disability, and behavioral problems. Children with fragile X syndrome Prader-Willi phenotye and those with Prader Willi syndrome have clinical and molecular similarities reviewed here which will impact new treatment options for both disorders.

Information related to the author
© 2016 International Research and Cooperation Association for Bio & Socio-Sciences Advancement
Previous article Next article