RELN and schizophrenia: Conversely, neurons in heterozygous Reln‐del cultures are expected to be more likely a good model of schizophrenia based on genetic studies.17, 24 Neurons in heterozygous Reln‐del cultures showed an unmarked phenotype of migration abnormality, but there were no differences in gene dose between neurite migration and elongation in vitro (Fig. 5a,b, Fig. S1, and [Link], [Link]).