MAPK12 and breast carcinoma: The significance of ERK3 in breast cancer was initially evaluated by exploring large multiomics datasets, including GETx (20), TCGA (21), and TARGET (22), as well as datasets from NCBI-GEO (19), through user-friendly platforms such as TNMplot (23), GENT2 (24), and the Kaplan–Meier plotter (25).