FMR1 and fragile X syndrome: Interestingly, people with Fragile X syndrome often exhibit autistic behaviors and mutations of FMR1 genes are also found in several cases of ASD (Vincent et al., 1996; Feinstein and Reiss, 1998; Rogers et al., 2001; Hatton et al., 2006; Chaste et al., 2012; Yu et al., 2013).