Kim SY reported that IL-7 plays a critical role in corneal fibroblasts in granular corneal dystrophy type 2 by reducing the expression of TGF-β and TGFBI through regulation of the RNNKI/RANK signaling cascade and by regulating the expression of MT-MMP (35). The gene discussed is TNFRSF11A; the disease is granular corneal dystrophy type II.