NRP2 and breast cancer: In addition, NRP1 and NRP2 were correlated with the stromal score in BC patients (Fig. 7e), suggesting that these two coreceptors could also be important for stromal cells, as well as for myoepithelial cells or fibroblasts, suggesting that SEMA3F likely exerts paracrine action and that alternative signals, such as those from VEGF, also function as coreceptors [63].