P276-00 was administered at a dose of 185mg/m2/day from day 1 to day 5 in each 21 day cycle. The protocol was amended in July 2009. As per the amendment P276-00 will be administered at a dose of 144 mg/m2/day from day 1 to day 5 and from day 8 to day 12 in each 21 day cycle till progression of disease or unacceptable toxicity.33 patients have been recruited in version 1 protocol, 38 more evaluable patients need to be recruited in version 2 protocol. Allowing for approximately 30% drop-outs, it is estimated that, for enrolling 38 evaluable subjects in the study, approximately 54 subjects would be enrolled. As the study has already enrolled 33 subjects, the sample size for the study to accommodate for same number of subjects (38 evaluable) in the revised protocol is estimated as approximately 87 (33 + 54) subjects. Hence the total sample size (accounting for drop-outs) is 87 patients.