HD IL-2 + Ipilimumab in Patients With Metastatic Melanoma

Phase IV, open-label, randomized, two-arm, multi-center study in patients with metastatic melanoma who are treatment naïve or have previously received a single non-immunologic therapy. Treatment Arm 1: "HD IL-2 first, then ipilimumab" Patients will receive two courses (four cycles) of High Dose Interleukin-2 (HD IL-2) followed by one course (four doses) of ipilimumab. Treatment Arm 2: Ipilimumab first then HD IL-2 Patients will receive one course (four doses) of ipilimumab followed by two courses (four cycles) of HD IL-2.

All patients will receive IL-2 at 600,000 international units per kilogram (kg) by intravenous bolus (IVB) every 8 hours for up to 14 planned doses with an additional cycle 14 days after the first. Ipilimumab 3mg/kg IV infusion Q3 weeks up to 4 doses4 doses A 3-6 week interval been the administration of the two drugs to allow for resolution of treatment-related toxicities. If corticosteroids were required during Ipilimumab administration, a 2-week period from discontinuation of steroid treatment to start of HD IL-2.