Meta-analysis of ST6GalNAc1 expression in colon and breast cancer tissue versus normal tissue shows significant down-regulation in 6/8 datasets for primary colon cancer (Supplementary Table 7B), and in 4/8 datasets for primary breast cancer (Supplementary Table 7C), the opposite of what we see in PCa. Here, ST6GALNAC1 is linked to posterior cortical atrophy.