Other genes coding for GABAA (γ-aminobutyric acid type A) receptor subunits β3, α5, γ3, and CYFIPI (cytoplasmic FMRP-interacting protein 1) are also reported in autism (Nishimura et al., 2007; Hogart et al., 2010), which suggests the involvement of genes other than UBE3A lying within the 15q11–q13 region in autistic pathophysiology. Here, UBE3A is linked to autism.