CASP9 and renal fibrosis: At the same time, expression of inflammatory cytokines (Il1b, Csf2, Tnfa, and Cxcl10), renal fibrosis, and profibrotic genes (Col1a1, Col3a1, Fn1, and Vim) was lower in the FA-treated Casp9 HZ mice (Fig. 7, G to I).