NOS1 and schizophrenia: The second stage involved the examination of these three SNVs, as well as rs3837437, located nearby them in the 5′-flank region of NOS1. Here, only rs3782206 demonstrated a statistically significant association, which remained after the correction for multiple comparisons, both in the total sample (p = 0.004) and when compared to paranoid schizophrenia (p = 0.012).