Crizotinib

Pronunciation

Definition 1

A drug used to treat advanced non-small cell lung cancer that has a mutated (changed) form of a gene called anaplastic lymphoma kinase (ALK). It is also being studied in the treatment of other types of cancer. Crizotinib blocks the protein made by the mutated ALK gene. Blocking this protein may stop the growth and spread of cancer cells. Crizotinib may also prevent the growth of new blood vessels that tumors need to grow. It is a type of tyrosine kinase inhibitor and a type of antiangiogenesis agent. Also called MET tyrosine kinase inhibitor PF-02341066, PF-02341066, and Xalkori. (NCI Dictionary)

Definition 2

An orally available aminopyridine-based inhibitor of the receptor tyrosine kinase anaplastic lymphoma kinase (ALK) and the c-Met/hepatocyte growth factor receptor (HGFR) with antineoplastic activity. Crizotinib, in an ATP-competitive manner, binds to and inhibits ALK kinase and ALK fusion proteins. In addition, crizotinib inhibits c-Met kinase, and disrupts the c-Met signaling pathway. Altogether, this agent inhibits tumor cell growth. ALK belongs to the insulin receptor superfamily and plays an important role in nervous system development. ALK dysregulation and gene rearrangements are associated with a series of tumors. (NCI Thesaurus)

Definition 3

A substance being studied in the treatment of some types of cancer. It blocks enzymes that cancer cells need to grow and spread. It may also prevent the growth of new blood vessels that tumors need to grow. It is a type of tyrosine kinase inhibitor and a type of antiangiogenesis agent. (NCI Dictionary)

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