PTGS2 and Alzheimer disease: Furthermore, miR-21* (predicted for BCL2, MAL, SFRP1, SOCS3, PTGS2), miR-181c (predicted for ALDH1A3, BCL2, MAL), and let-7i* (predicted for BCL2, CYP27B1, and SOCS3) were also found to be upregulated in AD and CRC samples (Fig. 4).