Based on the analysis of individual genes and differentially expressed and co-expressed pathways SSA/Ps difference from HP, CR samples involves: (1) up-regulation of IR genes, EMT genes and genes previously associated with the invasive cancer phenotype; (2) up-regulation of pathways, implicated in proliferation, inflammation, cell-cell adhesion and down-regulation of serine threonine kinase signaling pathway; (3) de-regulation of a set of pathways regulating cell division, protein trafficking and kinase activities. The gene discussed is MARK2; the disease is cancer.