In the schizophrenia group, gene expression of BDNF IV (r = −0.347, p = 0.01) and NURR1 (r = −0.269, p = 0.036) negatively correlated with duration of illness and p75 mRNA positively correlated with daily CPZ-equivalent antipsychotic dose (r = 0.431, p = 0.045) (Table S9). Here, NR4A2 is linked to schizophrenia.