Transient decrease in lymphocyte counts. N = number of patients at baseline. Changes in cell count (from baseline to 2 hours after first dose, and from 2 hours after first dose to day 56) were significant for both (A) total lymphocyte counts (P = .002 and .004, respectively) and (B) NK cell counts (P = .0025 and .032, respectively). *Postdose. All other assessments were performed predose.