MAP2K4 and breast cancer: To further verify the prognostic value of MAP2K4 and Vimentin co-expression in breast cancer patient tissue, we divided 140 cases into four groups based on MAP2K4 and Vimentin expression patterns: (1) MAP2K4 high expression/Vimentin high expression (HH); (2) MAP2K4 high expression/Vimentin low expression (HL); (3) MAP2K4 low expression/Vimentin high expression (LH); and (4) MAP2K4 low expression/Vimentin low expression (LL).