Transgenic mice in cancer research are invaluable tools that have revolutionized the study of cancer biology and the development of new therapies. By introducing specific genetic modifications into mice, researchers can mimic human cancer conditions, allowing for the investigation of tumor development, progression, and metastasis in a controlled environment. These genetically engineered mice enable the study of oncogenes and tumor suppressor genes, providing insights into the molecular mechanisms driving cancer. Additionally, transgenic mouse models are used to evaluate the efficacy and safety of novel cancer treatments, such as targeted therapies and immunotherapies, before clinical trials in humans. The use of transgenic mice in cancer research continues to advance our understanding of the disease and accelerate the discovery of more effective treatments.