Research is being conducted on the plasticity of natural killer cells in cancer, with studies exploring its role in various types of cancer, including neuroblastoma, breast cancer, and gastric cancer. The plasticity of cancer cells and other cells, such as mast cells, is also being investigated in relation to immunotherapy resistance and treatment outcomes. The findings suggest that cell plasticity may impact the effectiveness of cancer treatments, including immunotherapy, but the specifics of these relationships are still being studied.