CD19 and psoriasis: Conversely, two traits showed protective connections with psoriasis: sw mem AC (IVW: OR 0.9993, 95% CI 0.9985–1.0000; p = 4.077476e−02), CD19 on IgD+ CD38− unsw mem (IVW: OR 0.9996, 95% CI 0.9992–0.9999; p = 1.260912e−02).