- Patients who have had chemotherapy, radioactive or biological cancer therapy within four weeks prior to the first dose of study drug, or who has not recovered to Common Terminology Criteria for Adverse Events (CTCAE) Grade 1 or better from the adverse effects (AEs) due to cancer therapeutics administered more than four weeks earlier. Subjects with ≤ grade 2 neuropathy are an exception to this criterion and may qualify for the study.