IFT122 and cranioectodermal dysplasia: On the other hand, several variants in IFT122 have been reported to cause cranioectodermal dysplasia (CED) in humans (Walczak-Sztulpa et al. 2010; Alazami et al. 2014; Tsurusaki et al. 2014; Moosa et al. 2016).