TGFB1 and pemphigus foliaceus: More importantly, several studies have robustly documented that silencing the expression of TGF-β1 reduces inflammation and slows the progression of PF (Baowen et al., 2010; Liu et al., 2013; Peng et al., 2013), which play a pivotal role in PF (Hu et al., 2018; Li et al., 2018).