Mutations of C-RAF are rare in human cancer because C-RAF has a low basal kinase activity compared with B-RAF
Cancer Research (2005) - Comments
pubmed: 16266992  doi: 10.1158/0008-5472.can-05-1683  issn: 0008-5472  issn: 1538-7445 

Victoria Emuss, Mathew Garnett, Clive Mason, Richard Marais