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Checkpoint inhibitor therapy is a form of cancer immunotherapy. The therapy targets immune checkpoints , key regulators of the immune system that when stimulated can dampen the immune response to an immunologic stimulus.
This checkpoint is the target of Merck & Co.'s melanoma drug Keytruda, which gained FDA approval in September 2014. The checkpoint is also the target of EMD Serono (Merck KGaA)'s drug Bavencio, which gained FDA approval in 2017. An advantage of targeting PD-1 is that it can restore immune function in the tumor microenvironment.
PD-1 inhibitors and PD-L1 inhibitors are a group of checkpoint inhibitor anticancer drugs that block the activity of PD-1 and PDL1 immune checkpoint proteins present on the surface of cells. Immune checkpoint inhibitors are emerging as a front-line treatment for several types of cancer.
Programmed cell death protein 1 (PD-1), (CD279 cluster of differentiation 279). PD-1 is a protein encoded in humans by the PDCD1 gene. [5] [6] PD-1 is a cell surface receptor on T cells and B cells that has a role in regulating the immune system's response to the cells of the human body by down-regulating the immune system and promoting self-tolerance by suppressing T cell inflammatory activity.
Immune checkpoint inhibitors: drugs that block immune system checkpoints to allow immune cells to respond more strongly to the cancer. T-cell transfer therapy: a treatment that takes T-cells from the tumor and selects or changes them in the lab to better attack cancer cells, then reintroduces them into the patient.
Durvalumab is an immune checkpoint inhibitor drug. [10] It was approved in for medical use in the United States in May 2017, [ 6 ] [ 9 ] [ 11 ] [ 12 ] and in the European Union in September 2018. [ 7 ]
A combination therapy of two drugs — a statin and a protein inhibitor — may help suppress the creation and growth of tumors in bladder cancer, a new study finds. Reducing cholesterol may help ...
An immune checkpoint regulator is a modulator of the immune system, that allows initiation of a productive immune response and prevents the onset of autoimmunity. Examples of such a molecule are cytotoxic T-lymphocyte antigen 4 (CTLA-4 or CD152), which is an inhibitory receptor found on immune cells and programmed cell death 1 (CD279), which has an important role in down-regulating the immune ...