NRP1 and neoplasm: PTP4A3 expression was correlated with HLA-DRA, BDCA-1, and BDCA-4 in dendritic cells, and with CCR8 and TGFB1 in Treg cells, indicating that PTP4A3 promoted tumor growth and metastasis through the classical PI3K-AKT-PTEN signal pathway and also by regulating the tumor immune microenvironment (18–20).