NRXN1 and schizophrenia: By microarray analysis in 2,977 European patients with schizophrenia and 33,746 European controls, Rujescu et al. identified 66 deletions and 5 duplications in the NRXN1 gene: 12 deletions and 2 duplications occurred in schizophrenic patients (0.47%), compared to 49 and 3 in controls (0.15%) [5].