XRCC2 and lung adenocarcinoma: However, we noticed that the expression of many core HR pathway genes (including BRCA1, BRCA2, BARD1, BRIP1, ABRAXAS1, UIMC1, RAD51, RAD51B, RAD51C, RAD51D, XRCC2, RAD54) was strongly correlated with CNV, both in lung adenocarcinoma (Fig. 5b) and in TNBC (Fig. 5c).