TGFB1 and eosinophilic esophagitis: In an in vitro study (Nhu et al., 2020) rosiglitazone and pioglitazone strongly inhibited TGF-β1-mediated synthesis of α-sma, collagen-1α1, and ctgf in EoE fibroblasts, in a dose-dependent fashion, while failing to do so in fibroblasts from healthy controls.