According to staining intensity, we subdivided 92 PCa patients into the following two groups: a “low-ST6Gal-I” group containing 43 samples characterized by low ST6Gal-I staining (negatively and weakly stained) and a “high-ST6Gal-I” group containing 49 samples characterized by high staining (moderately and strongly stained, Table 1). Here, ST6GAL1 is linked to posterior cortical atrophy.