The article says FXS is the most common cause. But that seems odd. Wikipedia has two references for; > Fragile X syndrome (FXS) is a genetic disorder characte

The article says FXS is the most common cause. But that seems odd. Wikipedia has two references for; > Fragile X syndrome (FXS) is a genetic disorder characterized by mild-to-moderate intellectual disability. The average IQ in males with FXS is under 55. That doesn’t sound like most autistics I know.