RAD51 and cancer: Furthermore, in paired comparisons of tumour and adjacent normal tissues, RAD51 was upregulated in 15 cancer types: BLCA, BRCA, CHOL, COAD, ESCA, HNSC, KIRC, KIRP, LIHC, LUAD, LUSC, PRAD, STAD, THCA and UCEC (Figure 2C and Table S2).