The levels of ECP were not significantly different in the sera from patients with ALS (24.1 ng/mL; SD = 24.5 ng/mL; range, 0.4–88.8 ng/mL), AD (15.4 ng/mL; SD = 17.4 ng/mL; range, 0–97.1 ng/mL), and PD (15.8 ng/mL; SD = 15.2 ng/mL; range, 0–77.8 ng/mL) and healthy controls (21.1 ng/mL; SD = 27.4 ng/mL; range, 1.7–109.9 ng/mL; Figure 1(b), Table 2). This evidence concerns the gene RNASE3 and Alzheimer disease.