HMGB1 and posterior cortical atrophy: We did not observe significant differences between sera from patients with early stage PCA and those from patients with BPH regarding CRP, SAA or HMGB1 levels (Table 1: average CRP concentration ± SEM 7.47 ± 1.92 μg/ml vs. 5.70 ± 1.16 μg/ml, p = 0.4370; average SAA concentration ± SEM 2.81 ± 0.31 vs. 2.71 ± 0.29 μg/ml, p = 0.7728; average HMGB1 concentration ± SEM 52.77 ± 12.48 vs. 49.11 ± 15.13 ng/ml, p = 0.7497).