The sample size with a total of 5 proposed dose levels and starting at dose level 1B for dose escalation, the number of patients evaluable for DLT ranges from 4-30. To account for about 20% patients anticipated to subsequently be found to be not evaluable for toxicity, authorization for enrollment of 36 patients will be sought from regulatory authorities. Likely scenarios probably involve 12-24 evaluable patients and therefore 15-30 patients will be enrolled in the study.