CD38 and posterior cortical atrophy: In B cells, the presence of CD25 on IgD+ CD38- unswitched memory cells (OR = 1.0285, 95% CI = 1.0069 to 1.0505, p = 0.0093), as well as the percentage of IgD+ CD38br lymphocytes (OR = 1.0581, 95% CI = 1.0033 to 1.1159, p = 0.0373), were found to be correlated with an increased risk of PCa.