Monoclonal Antibody With or Without gp100 Peptides Plus Montanide ISA-51 in Treating Patients With Stage IV Melanoma

RATIONALE: Biological therapies, such as MDX-010, work in different ways to stimulate the immune system and stop tumor cells from growing. Vaccines made from gp100 peptides may make the body build an immune response to kill tumor cells. Combining the vaccines with Montanide ISA-51 may cause a stronger immune response and kill more tumor cells. It is not yet known whether monoclonal antibody therapy is more effective with or without vaccine therapy in treating advanced melanoma. PURPOSE: This randomized phase II trial is studying monoclonal antibody therapy alone to see how well it works compared to monoclonal antibody therapy, gp100 peptides, and Montanide ISA-51 in treating patients with stage IV melanoma.

OBJECTIVES: Primary * Determine the clinical response in patients with stage IV melanoma treated with escalating doses of anti-cytotoxic T-lymphocyte-associated antigen-4 monoclonal antibody (MDX-010) with or without gp100 peptides emulsified in Montanide ISA-51. Secondary * Determine the safety and toxicity profile of these regimens in these patients. * Determine the immunologic response in patients treated with these regimens. * Determine the pharmacokinetics of these regimens in these patients. * Determine, in HLA-A\*0201-positive patients, the differences in responses between patients previously vaccinated with gp100 peptides and patients not previously vaccinated. OUTLINE: This is a 2-part, partially randomized study. * Part I (closed as of 3/7/2005): * HLA-A\*0201-negative patients: Patients receive anti-cytotoxic T-lymphocyte-associated antigen-4 monoclonal antibody (MDX-010) IV over 90 minutes on day 1. Treatment repeats every 3 weeks for up to 6 doses (3 courses of 3 escalating doses) in the absence of disease progression or unacceptable toxicity. * HLA-A\*0201-positive patients: Patients are stratified according to prior exogenous gp100 peptide immunization (yes vs no). Patients are randomized to 1 of 2 treatment arms. * Arm I: Patients receive MDX-010 in the same manner as the HLA-A\*0201-negative patients. * Arm II: Patients receive MDX-010 as in arm I. Patients also receive gp100:209-217 and gp100:280-288 peptides emulsified in Montanide ISA-51 subcutaneously immediately after each MDX-010 infusion. * Part II: * HLA-A\*0201-negative patients (closed as of 3/7/2005): Patients receive MDX-010 as in part I. Treatment repeats every 3 weeks for up to 4 doses (2 courses of 2 escalating doses, beginning with a higher dose level than in part I) in the absence of disease progression or unacceptable toxicity. * HLA-A\*0201-positive patients: Patients are stratified and randomized as in part I. * Arm I: Patients receive MDX-010 in the same manner as the HLA-A\*0201-negative patients. * Arm II: Patients receive MDX-010 as in arm I. Patients also receive gp100:209-217 and gp100:280-288 peptides emulsified in Montanide ISA-51 subcutaneously immediately after each MDX-010 infusion. In both parts, patients with stable disease or a complete response (CR) after completing all courses of MDX-010 may receive 1 additional course of therapy in the absence of unacceptable toxicity. Patients achieving a partial response may continue to recieve treatment with MDX-010 at the same dose, in the absence of unacceptable toxicity, until CR or until tumor is no longer shrinking. Patients are followed at 3 weeks, every 3 months for 1 year, every 6 months for 2 years, and then annually thereafter. PROJECTED ACCRUAL: A total of 35-179 patients (up to 35 for part I \[closed as of 3/7/05\] and 69-141 \[23-47 per arm (arm I closed as of 3/7/05)\] for part II) will be accrued for this study within 3-4 years.