MER48 activation is specific, rather than general, in adenocarcinoma tumors. (a) Clustered heatmap showing the expression of nine MER48-associated lncRNAs in a panel of colon (COAD; n = 181), rectal (READ; n = 66), pancreatic (PAAD; n = 52), lung (LUAD; n = 372) and stomach (STAD; n = 136) adenocarcinomas. (b) Expression levels for the same nine MER48-lncRNAs. The y-axis is log2(FPKM + 1) for each set. Medians are indicated by red lines, upper and lower quartiles by boxes, and outliers by blue crosses.