E7050 in Combination With Cisplatin and Capecitabine Versus Cisplatin and Capecitabine Alone in Patients With Advanced or Metastatic Solid Tumors and Previously Untreated Gastric Cancer

This open-label, multicenter, randomized study will consist of 2 phases: Phase Ib: a safety run-in period with 3 ascending doses of E7050 in combination with fixed doses of Cisplatin and Capecitabine. This phase will enroll approximately 10 to 15 patients. * Phase II: a randomized 2-arm design which will enroll 80 patients. In the phase II portion, Patients will receive study treatment , E7050 in combination with Cisplatin and Capecitabine versus Cisplatin and Capecitabine Alone) for approximately six 21-day cycles (18 weeks). Beyond 18 weeks, patients who are experiencing clinical benefit may continue E7050, with or without Capecitabine (Arm 1), or may continue Capecitabine alone (Arm 2), depending on the original randomization treatment arm. Patients will continue treatment for as long as clinical benefit is sustained and the treatment is well tolerated, until the occurrence of progressive disease (PD), unacceptable toxicity, withdrawal of consent, or withdrawal by investigator, whichever occurs first. Patients will participate in either phase Ib or phase II.