immune checkpoint inhibitor

[ ih-myoon chek-point in-hib-i-ter ]
/ ɪˈmyun ˈtʃɛkˌpɔɪnt ɪnˌhɪb ɪ tər /

noun Immunology, Pharmacology.

a drug that targets and blocks certain proteins produced by T cells and other immune system cells in order to minimize the proteins’ restraints on cell activity, thereby freeing those cells to kill cancer cells more effectively.
Also check·point in·hib·i·tor.

Origin of immune checkpoint inhibitor

First recorded in 1970–75