APEX1 and frontotemporal dementia: In the FTD patients, we observed that PRDX1 (Rho = 0.47, p < 0.001) had a moderate to strong correlation while NPDC1 (Rho = -0.37, p < 0.001), APEX (Rho = 0.35, p < 0.01), PLTP (Rho = 0.33, p < 0.01), and CHIT1 (Rho = 0.28, p < 0.05) showed a moderate correlation with FTLD-CDR scores (Fig. 2D).