Pembrolizumab, Standard Chemotherapy, Tumor Infiltrating Lymphocytes, and High- or Low-Dose Aldesleukin in Treating Patients With Metastatic Melanoma

This randomized phase II trial studies how well giving pembrolizumab with standard chemotherapy, tumor infiltrating lymphocytes (TIL), and aldesleukin works in treating patients with melanoma that has spread to other areas of the body. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Drugs used in chemotherapy, such as cyclophosphamide and fludarabine phosphate, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving an infusion of TIL, or white blood cells, may help stimulate the immune system to help kill more cells. Aldesleukin may also stimulate the white blood cells to kill melanoma cells. Giving pembrolizumab together with standard chemotherapy, TIL, and high- or low-dose aldesleukin may help stop the melanoma from spreading.