<qa>  What is a chemotherapy drug commonly used in cancer patients?5-Fluorouracil is a chemotherapy drug commonly used in cancer patients. Patients with different type of solid tumors who have failed standard, approved treatments can be enrolled in the study. Escalated doses of GM-CT-01 will be given alone in Cycle 1, and in combination with 5-fluorouracil in cycle 2. Patients will be on study for approximately 60 days for determination of safety. However, with patient consent treatment can continue until disease progression is determined by CT scan. The study secondary reason is to determine whether treatment has stabilize the tumors or change it in size get bigger, smaller or stay the sameafter Cycle 2 and any additional cycles of treatment. 