CXCR4 and supranuclear palsy, progressive, 1: In PSP brains, we found a marginally significant correlation between CXCR4 and TMEM119 (PSP AIF1: r2 = 5.7 × 10−4 and p = 0.83; PSP TMEM119: r2 = 0.05 and p = 0.05).