Materials and Methods: We examined the relationship between insulin-like growth factor 1 receptor (IGF1R) and epithelial-mesenchymal transition (EMT) at three levels: in patients with kidney stones, in mice induced with glyoxalate crystals, and in HK2 cells stimulated with calcium oxalate monohydrate (COM). The gene discussed is IGF1R; the disease is nephrolithiasis.