Using bioinformatics analysis, Li et al. observed that in breast cancer XRCC2 and XRCC3 are associated with the infiltration of immune cells, such as B cells, CD4+ T cells, CD8/CD4+ T cells, neutrophils, and dendritic cells, as well as the prognosis of patients with breast cancer [91]. Here, XRCC2 is linked to breast carcinoma.