The plasma trabectedin levels attained were 10.6 ± 5.4 (Cmax), higher than those reached in patients after infusion of 1500 μ g/ m2 for 24 (Cmax of 1.8 ± 1.1 ng/ ml) and similar to those reached after administration of the same dose by 3 hour infusion (Cmax of 10.8 ± 3.7 ng/ ml).