Evaluating Patients With Impaired Hepatic Function

This is a Phase I, Open-Label study evaluating the PK of S-1 components and their metabolites in patients with advanced solid tumors and varying degrees of hepatic function defined by the NCI classification for hepatic impairment. Patients will be stratified into 4 Cohorts- Normal, Mild, Moderate or Severe. Six patients will be enrolled inot each cohort and receive S-1.