GSK1070916 is primarily used in research settings as a potent and selective inhibitor of Aurora B kinase, an enzyme involved in cell division. Its application is focused on studying the role of Aurora B in mitosis and its potential as a target for cancer therapy. Researchers utilize this compound to investigate its effects on tumor cell proliferation and apoptosis, particularly in cancers where Aurora B is overexpressed. It serves as a valuable tool for understanding the mechanisms of cell cycle regulation and for developing novel anticancer strategies. Additionally, GSK1070916 is employed in preclinical studies to evaluate its efficacy and safety profile in various cancer models.