Numerous researches have shown that BIRC5 contributes to tumor cell immune escape by inhibiting apoptosis and confirmed that its expression is strongly correlated with prognostic status and OS in various cancers (e.g., lung, colorectal, prostate, and ovarian cancers) (Cao et al., 2019; Filipchiuk et al., 2020; Wang et al., 2021). Here, BIRC5 is linked to ovarian cancer.