EGFR and pemphigus foliaceus: In addition, other signaling pathways, such as FGF, EGFR, VEGFA, and MAPK, play potential roles in the pathogenesis of PF (Iyer et al., 2015; Venkataraman and Frieman, 2017; Koo et al., 2018; Guo et al., 2021), which have been enriched as potential targets of WBT and are involved in cytokine production, cell proliferation, adhesion and migration, ECM degradation, and MMP activation.