Effect–time profiles of the mean (and SD) change from baseline (%) for total lymphocyte count after single-dose administration of placebo (n = 12) or ponesimod at doses of 1, 3, 8, 20, 50 or 75 mg (n = 6 per dose group). , 1 mg; , 3 mg; , 8 mg; , 20 mg; , 50 mg; , 75 mg; , placebo