Genes that have a low difference in gene expression in at least 4 cancer types compared to the control group and a very low standard deviation in all 6 analysed cancer types areOR5I1, GRM2, GDF2, MYOG, OR2AG1, OR2B11, CRHR1, NTSR1, ZNF645, CBLN3, ODF4, KCNT1, RNF151. Here, GRM2 is linked to cancer.