The adoptive transfer of CAR-cTregs significantly attenuated the increased expression of CCL2 and TGF-β1, which are characteristic of PF (Figure 6, C and D), coincident with a decrease in the size of the fibrocyte population (Figure 6, E and G, and Supplemental Figure 18, B and E). Here, TGFB1 is linked to pemphigus foliaceus.