7C10-C5 stained prostate cancer tissues in a methyl-PP2A-C specific manner as the immunohistochemical signal could be blocked by prior incubation of 7C10-C5 with a methylated but not with a non-methylated PP2A-C C-terminal peptide (Supplementary Fig. 2a). The gene discussed is PPP2CA; the disease is prostate carcinoma.