CD8A and breast cancer: Among them, the oncogenic genes were PIK3CA (Hou et al., 2022; Ouedraogo et al., 2022), EIF2AK3 (Chen et al., 2019), and MYD88 (Chen et al., 2015), and the immune-related genes were ATG5 (Park et al., 2022), HSP90AA1 (Lin et al., 2020; Liu et al., 2021), IL1R1 (Dagenais et al., 2017; Tulotta et al., 2021), and CD8A (Hu et al., 2021), all of which have been found to be related to the occurrence and development of BC.