To predict SCD, the univariate analysis revealed a significant adverse impact of age, diabetes mellitus and predialysis hypokalemia with a serum potassium concentration <4.0 mEq/L, and a significant protective effect of exposure to 1.0 mEq/L potassium dialysate, serum albumin and creatinine. This evidence concerns the gene ALB and Schnyder corneal dystrophy.