Study to Assess the Safety and Tolerability of U3-1565 in Subjects With Advanced Solid Malignant Tumors

U3 1565 will be provided as a sterile, frozen solution. Each glass vial will contain 1.1 mL (1 mL extractable) of study medication with a concentration of 100 mg/mL. U3 1565 will be diluted in a final volume of 100 mL and administered by continuous IV infusion over 60 minutes. Infusion times can be extended to a maximum of 120 minutes for subjects unable to tolerate the 60 minute infusion.