A PPI network, using the web version of STRING, showed that AMPH was linked with BIN1, EGF/EGFR, and CLTC (Figure 2E) and that SORCS3 was linked with NGF, SLC39A12 and VPS26A (Figure 2F), some of which have been implicated in SLE etiology. Here, NGF is linked to systemic lupus erythematosus.