The study drug will be administered by bolus intravenous infusion in an in-patient hospital setting under the supervision of a qualified physician experienced in the use of anti-cancer agents including high dose IL-2. An intensive care facility and specialists skilled in cardiopulmonary or intensive care medicine must be available. There are two treatment cycles. For each treatment cycle, patients will be admitted to the hospital, remain in the hospital during the study drug infusion period, and be discharged from the hospital the day after the last infusion at the Principal Investigator's discretion. There is a 10-day resting period between the treatment cycles. Tumor assessments will be done at weeks 7 and 11 after starting the study drug.