hrp0089p3-p406 | Growth & Syndromes P3 | ESPE2018

Two Siblings with Prader-Willi Syndrome Caused by Microdeletion Derived from the Paternal Grandmother

Dong Guanping , Dai Yangli , Huang Ke , Zou Chaochun , Chen Xuefeng

Prader-Willi syndrome (PWS) is a complex neurobehavioral disorder characterized by infantile significant hypotonia and feeding difficulties, followed by morbid obesity secondary to hyperphagia, short stature, functionally deficient gonads, intellectual disabilities and behavioral problems. It is caused by lack of expression of imprinting genes on the paternally inherited chromosome 15q11.2-q13 region. The genetic mechanism responsible for Prader-Willi syndrome can rarely be in...