MTOR and psoriasis: Several signaling pathways including the nuclear factor κB (NF-κB), Mitogen-activated protein kinase (MAPK), mammalian target of rapamycin (mTOR), and tumor necrosis factor α (TNF-α) play crucial roles in the onset of psoriasis (Jin et al., 2016; Zhai et al., 2017; Zhao et al., 2015).