What appears to be the same 'cancer' type can be classified based on different numbers. Cutting-edge, targeted anticancer therapies are being developed to target an extremely small number of patients within a specific category of cancer.

The cancer types we refer to as liver cancer, gastric cancer, and lung cancer are major categories, and they are classified as different subtypes. Even if a tumor originates from the same organ, treatment difficulty and the number of patients differ among these subtypes.

The transition of medicine’s prescription criteria to the focus on 'genetics' is expected as precision medicine is already being developed. It is knocking on our door, yet we st