Mutations in FOXP1 and FOXP2 cause autism spectrum disorder (ASD) and language impairment (Girirajan et al., 2013; Hamdan et al., 2010; Horn et al., 2010; Lam et al., 2013; Lehmann, Sowden, Carlsson, Jordan, & Bhattacharya, 2003; S. J. Turner et al., 2013) and intellectual disability (ID), while mutations in FOXG1 cause ASD, Rett syndrome, and West syndrome(Ariani et al., 2008; Bahi‐Buisson et al., 2010; Kortum et al., 2011; Mitter et al., 2018; Striano et al., 2011). Here, FOXP1 is linked to Intellectual disability.