BRD2 and Alzheimer disease: In the SF fraction, there is positive correlation between PC and LPC in CH-NAT (Figure 4A, r = 0.34, p = 0.0398) and this level of correlation increases in CH-PAT (Figure 4B, r = 0.50, p = 0.0029), and in AD (Figure 4C, r = 0.51, p = 0.0096).