In this ASD‐DM interactor set, 21 genes are high‐confidence autism genes not previously associated with DM (ANK2, ASXL3, CTNNB1, CUL3, DLG4, DYRK1A, GNAI1, GRIN2B, KCNMA1, KMT2A, NCOA1, NIPBL, NLGN1, NRXN1, PHF12, POGZ, PPP1R9B, SIN3A, SMARCC2, TBL1XR1, UBR1). Here, PPP1R9B is linked to autism.