Irinotecan Plus E7820 Versus FOLFIRI in Second-Line Therapy in Patients With Locally Advanced or Metastatic Colon or Rectal Cancer

The purpose of the Phase Ib portion is to find out the highest dose of study drug that can safely be given when tested in a small group of subjects. The purpose of the Phase II portion is to find out how safe the study drug is when taken at the highest dose in a larger group of subjects.

This open-label, multicenter, randomized study will consist of a Phase Ib portion: a safety run-in period with 3 ascending doses of E7820; and a Phase II portion: a randomized 2-arm design. Approximately 95 patients with measurable, nonresectable locally advanced or metastatic colorectal adenocarcinoma, who have failed first-line chemotherapy, will be enrolled in the study (approximately 12 to 15 patients in the Phase Ib portion and 80 patients in the Phase II portion). Patients will only participate in either the Phase Ib or the Phase II portion of the study. Patients will receive up to a planned total of 12 cycles of study treatment unless there is occurrence of progressive disease, unacceptable toxicity, withdrawal of consent, withdrawal by the Investigator, lost to follow-up, or death, whichever occurs first. After 12 cycles, patients who demonstrate clinical benefit may continue single agent E7820 for long as clinical benefit is sustained and the treatment is well tolerated. If the treating physician does not feel comfortable discontinuing chemotherapy after 12 cycles, further chemotherapy may be considered following discussion with the medical monitor and sponsor.