CD4 and benign prostatic hyperplasia: Additionally, an increased risk of BPH was also observed for Treg cells, specifically CD25hi CD45RA- CD4 not Treg %T cell (OR = 1.0364, 95% CI = 1.0029~1.0710, p = 0.0328), Lymphocyte AC (OR = 1.0671, 95% CI = 1.0055~1.1325, p = 0.0322), CD25 on CD45RA- CD4 not Treg (OR = 1.0424, 95% CI = 1.0124~1.0733, p = 0.0052), and CD25 on secreting Treg (OR = 1.0435, 95% CI = 1.0069~1.0816, p = 0.0194).