A Phase II Study of the Interleukin-6 Receptor Inhibitor Tocilizumab in Combination With Ipilimumab and Nivolumab in Patients With Unresectable Stage III or Stage IV Melanoma

Inclusion Criteria: * Patients must have signed and dated an Institutional Review Board (IRB)/Independent Ethics Committee (IEC)-approved written informed consent form (ICF) in accordance with regulatory and institutional guidelines. This must be obtained before the performance of any protocol-related procedures that are not part of normal patient care. * Patients must be willing and able to comply with scheduled visits, treatment schedule, laboratory tests, tumor biopsies, and other requirements of the study. * All patients must be either Stage IIIb/c/d or Stage IV melanoma according to the American Joint Committee on Cancer (AJCC) (8th edition) and have histologically-confirmed melanoma that is felt to be surgically unresectable in order to be eligible. Please refer to the AJCC 8th edition Cancer Staging Manual for a description of tumor, lymph node, metastasis, and staging. * All melanomas, except ocular/uveal melanoma, regardless of primary site of disease will be allowed; mucosal melanomas are eligible. * Patients must not have received prior anticancer treatment for metastatic disease (for example, but not limited to, systemic, local, radiation, radiopharmaceutical). * Exceptions: Surgery for melanoma and/or post-resection brain radiotherapy (RT) if Central Nervous System (CNS) metastases and adjuvant RT for locoregional disease after resection and/or prior treatment with adjuvant IFN-alpha, ipilimumab or nivolumab (as described in Exclusion Criterion 2). * All patient…