Pearson correlation analysis showed that NRG1 levels of patients in the HCC + PTSD group were positively correlated with MMSE scores (r = 0.540, P < .001), MoCA scores (r = 0.5305, P < .001), and LOTCA scores (r = 0.5257, P < .001; Figure 1C). The gene discussed is NRG1; the disease is post-traumatic stress disorder.