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Yervoy

Ipilimumab
Ipilimumab 5TRU.png
Fab fragment of ipilimumab (blue) binding CTLA-4 (green). From PDB entry 5TRU.
Monoclonal antibody
Type Whole antibody
Source Human
Target CTLA-4
Clinical data
Pronunciation i pi lim′ ue mab
Trade names Yervoy
Synonyms BMS-734016, MDX-010, MDX-101
AHFS/Drugs.com Consumer Drug Information
MedlinePlus a611023
License data
Pregnancy
category
  • US: C (Risk not ruled out)
Routes of
administration
IV
ATC code
Legal status
Legal status
Identifiers
CAS Number
ChemSpider
  • none
UNII
KEGG
Chemical and physical data
Formula C6742H9972N1732O2004S40
Molar mass 148634.914 g/mol
 NYesY (what is this?)  

Ipilimumab (trade name Yervoy) is a monoclonal antibody that works to activate the immune system by targeting CTLA-4, a protein receptor that downregulates the immune system.

Cytotoxic T lymphocytes (CTLs) can recognize and destroy cancer cells. However, an inhibitory mechanism interrupts this destruction. Ipilimumab turns off this inhibitory mechanism and allows CTLs to function.

Ipilimumab was approved by the U.S. FDA in 2011 for the treatment of melanoma, a type of skin cancer. It is undergoing clinical trials for the treatment of non-small cell lung carcinoma (NSCLC), small cell lung cancer (SCLC),bladder cancer and metastatic hormone-refractory prostate cancer.

The concept of using anti-CTLA4 antibodies to treat cancer was first developed by James P. Allison while he was director of the Cancer Research Laboratory at the University of California, Berkeley. Clinical development of anti-CTLA4 was initiated by Medarex, which was later acquired by Bristol-Myers Squibb. As of 2013 the cost was $120,000 for a course of treatment. For his work in developing ipilimumab, Allison was awarded the Lasker Award in 2015.

Ipilimumab was approved by US FDA in March 2011 to treat patients with late-stage melanoma that has spread or cannot be removed by surgery. It was later approved by the US FDA on October 28, 2015 for stage 3 patients as adjuvant therapy. On February 1, 2012, Health Canada approved ipilimumab for "treatment of unresectable or metastatic melanoma in patients who have failed or do not tolerate other systemic therapy for advanced disease." Ipilimumab was approved in the European Union (EU), for second line treatment of metastatic melanoma in November 2012.


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