TopoisomeraseI/II-IN-1 is a dual inhibitor of Topoisomerase I and II. It induces G2/M cell cycle arrest and apoptosis (apoptosis) in cancer cells by increasing the levels of p53, p21, Bax mRNA, and caspase-3 proteins, as well as the Bax/Bcl-2 ratio, while decreasing Bcl-2 levels. This compound is useful for research on various cancers such as melanoma, renal cancer, colorectal cancer, and breast cancer.