Researchers were trying to find reliable immune-related prognostic genes in ovarian cancer, including TAP1 (Liu et al., 2020; Wu et al., 2020; Huo et al., 2021) and CXCL13 (Liu et al., 2020; Wu et al., 2020; Li et al., 2021). The gene discussed is CXCL13; the disease is ovarian cancer.