The primary cause of FXS is the mutation-induced inactivation of Fmr1 gene leading to the lack of fragile X Messenger Ribonucleoprotein (FMRP) (Verkerk et al., 1991; Bassell and Warren, 2008; Rylaarsdam and Guemez-Gamboa, 2019). This evidence concerns the gene FMR1 and fragile X syndrome.