Kit is a receptor protein tyrosine kinase, which is a receptor for stem cell factor or kit ligand. Signaling through Kit is important for formation of red cells, lymphocytes, mast cells and platelets among others. Binding of Kit receptor to stem cell factor leads to an intracellular cascade of events that includes activation of PI 3-kinase, Src family kinases and PLC gamma. Activating mutations in the Kit receptor are associated with several human malignancies include leukemias, gastrointestinal stromal tumors and mastocytomas. Source: NetPath http://www.netpath.org/pathways?path_id=NetPath_6 NetPath 6; cellmap:6 - Kit Receptor Signaling Pathway. The Kit Receptor signaling pathway was kindly reviewed by Imke Ehlers in Peter Besmer’s lab. This cancer signaling pathway is available at Cancer Cell Map (http://cancer.cellmap.org) and NetPath (http://www.netpath.org) and is part of a collaborative project between the Computational Biology Center at Memorial Sloan-Kettering Cancer Center (http://cbio.mskcc.org), PandeyLab at Johns Hopkins University (http://pandeylab.igm.jhmi.edu) and Institute of Bioinformatics (http://www.ibioinformatics.org). If you use this pathway, you must cite the Cancer Cell Map and NetPath websites until the pathway is published. http://cancer.cellmap.org; http://www.netpath.org This pathway was inferred from Homo sapiens pathway [http://www.wikipathways.org/index.php?title=Pathway:WP304&oldid=21319 WP304(r21319)] with a 98% conversion rate. Stem Cell Factor signaling pathway PW:0001227 Pathway Ontology