Nivolumab is a fully human IgG4 monoclonal antibody that acts as an immunomodulator by blocking ligand activation of programmed cell death 1 (PD-1) receptor on T cells. It is indicated for use in patients with unresectable (cannot be surgically removed) or metastatic melanoma who no longer respond to other drugs. Nivolumab is administered as an intravenous infusion over 60 minutes every 2 weeks.
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