Siglec-9, the receptor of MUC16, had strong correlations with markers of neutrophil ITGAM, ITGB2, FCGR1A, FCGR2A, FCGR3A, analyzed with TCGA-OV database and ovarian cancer tissue RNA sequencing data (Fig. 1D). The gene discussed is FCGR1A; the disease is ovarian cancer.