FPR2 and neoplasm: The correlation analysis between FPR2 expression in cancerous tissues and clinicopathological features showed that FPR2+ was positively related to TNM (Tumor, Node, Metastasis) stage (P = 0.002), serosal invasion (P = 0.015) and lymph node metastasis (P = 0.043), but not with histological grade (P = 0.812, Table 1).