CP and fragile X syndrome: CP-AMPARs provide an important route for Ca2+ entry into progenitors, and changes of Ca2+ signaling can contribute to altered fate determination, differentiation, and migration of FXS neural progenitors (Castrén et al., 2005; Tervonen et al., 2009; Saffary and Xie, 2011; Sheridan et al., 2011; Liu et al., 2012; Doers et al., 2014; Li and Zhao, 2014; Telias et al., 2015).