SAA2 and Alzheimer disease: Ch‐ upregulated Saa1 (Log2 FC = 2.02) and Saa2 (Log2 FC = 2.91) in 3xTg‐AD mice, but downregulated Saa1 (Log2 FC = −1.59) and Saa2 (Log2 FC = −1.47) in NonTg mice.