MAPK1 and gastric cancer: Gene ontology (GO) cellular process analysis of gene expression profile of c.1380delA SB.mhdgc.-1 gastric cancer cells ranked enrichment of ERK1 and ERK2 signaling first (p < 10 E-8), out of the top 10 ranked processes three involved cellular organization and cytoskeletal organization (p < 10 E-6; Additional file 4: Figure S2).