Inclusion Criteria:

• measurable disease as defined by the presence of at least one measurable lesion
• prior immunotherapy (up to 2 regimens) or prior radiotherapy is permitted but at least 4 weeks must have elapsed prior to enter study
• life expectancy of at least 12 weeks
• adequate bone marrow, liver and kidney function

Exclusion Criteria:

• excluded medical conditions like: pre-existing neuropathy, active heart diseases or ischemia, serious infections, HIV infection, chronic hepatitis B or C, brain metastasis, seizures, hypersensitivity to taxanes, organ transplants, some previous cancers
• excluded therapies and medications, previous and concomitant such as: anticancer chemotherapy or immunotherapy during the study or within 4 weeks prior to study entry; more than two prior anticancer chemotherapy regimens; radiotherapy during study or within 4 weeks prior to study entry; bone marrow transplant
• others: pregnant or breast-feeding patients; both men and women enrolled in this trial must use adequate barrier birth control measures during the course of the trial; substance abuse, medical, psychological or social conditions that may interfere with the patient's participation.