In Drosophila, similarities between tumor suppression and other examples of cell competition include a requirement for the juxtaposition of phenotypically different cells; involvement of Eiger, JNK signaling, and suppression of Hippo signaling; and a process of cell elimination that involves cell killing and active extrusion from the epithelium; these similarities have led many authors to refer to tumor suppression as a “form” of cell competition27,35,56. Here, MAPK8 is linked to neoplasm.