SCRIB, also known as Scribble, SCRIBL, or Scribbled homolog (Drosophila), is a scaffold protein which in humans is encoded by the SCRIBgene.[5][6] It was originally isolated in Drosophila melanogaster in a pathway (also known as the Scribble complex) with DLGAP5 (Discs large) and LLGL1 (Lethal giant larvae) as a tumor suppressor.[7] In humans, SCRIB is found as a membrane protein and is involved in cell migration, cell polarity, and cell proliferation in epithelial cells.[7][8] There is also strong evidence that SCRIB may play a role in cancer progression because of its strong homology to the Drosophila protein.[7]