Furthermore, in subsequent analyses of these data, where the brain pH in patients with SCZ and bipolar disorder was less than in control subjects (p = 0.03 and p = 0.01, respectively, 2-tail t test), there was an inverse correlation between TGFB2 expression and brain pH in general (r = −0.54, p = 0.002). This evidence concerns the gene TGFB2 and bipolar disorder.