In AD patients (n = 30), CSF IL-12/23 p40 correlated positively with CSF P-tau (r = 0.46, p = 0.01; Fig 2B) but not with Aβ1–42 (r = 0.04), T-tau (r = 0.27), or MMSE score (r = -0.23). The gene discussed is MAPT; the disease is Alzheimer disease.