Fragile X syndrome (FXS), is the most common cause of inherited mental impairment. FXS is the most common known cause of autism or 'autistic-like' behaviour. Symptoms also can include characteristic physical and behavioural features and delays in speech an
Fragile X syndrome (FXS), is the most common cause of inherited mental impairment. FXS is the most common known cause of autism or 'autistic-like' beh...