Naxitamab, sold under the brand name Danyelza, is an anti-cancer medication. It is a monoclonal antibody used in combination with granulocyte-macrophage colony-stimulating factor (GM-CSF) for people one year of age and older with relapsed or refractory high-risk neuroblastoma in the bone or bone marrow demonstrating a partial response, minor response, or stable disease to prior therapy.