Specifically, monocytes/macrophages increased expression of several apoptosis genes (including BCL2, FGFR3, FGFR1, CTH, CASP3, IL19, NME5, and S100A8/9) in diabetic foot ulcers compared to monocytes/macrophages in non-diabetic wounds. Here, FGFR3 is linked to diabetic foot.