Professor Shuunosuke who was awarded the Nobel Prize for Physiology and Medicine found a molecule called "PD-1" which has an effect of suppressing immunity. PD-1 is a molecule that suppresses immunity, and if it can inhibit the function of PD-1, it can be said that it has a great effect on cancer treatment. Anticancer drugs targeted to PD-1 have already been developed and are gaining attention as next-generation cancer therapeutics.