OXT and autism: Deficits in OXT-immunoreactive (OXT-ir) neurons and peptide levels were observed in several monogenic mouse models of autism, including BTBR mice (Silverman et al., 2010b), CNTNAP2 (Penagarikano et al., 2015) KO mice and MAGEL2 (Meziane et al., 2015) KO mice.