Genomic and bioinformatics research has revealed that some primary cilia genes are linked to psychiatric disorders, such as the genes CC2D2A and Disc1, which are involved in ciliogenesis (Shen et al., 2008; Marley and von Zastrow, 2010; Veleri et al., 2014), and their defects can lead to psychiatric disorders, including Joubert syndrome (Bachmann-Gagescu et al., 2012), mental retardation (Noor et al., 2008; Shi et al., 2012), Meckel syndrome (Tallila et al., 2008), and Bardet Biedl syndrome (BBS) (Haq et al., 2019). Here, CC2D2A is linked to Bardet-Biedl syndrome.