23 Gumprecht Gumprecht J J Zychma Zychma MJ MJ Grzeszczak Grzeszczak W W Zukowska-Szczechowska Zukowska-Szczechowska E E Angiotensin I-converting enzyme gene insertion/deletion and angiotensinogen M235T polymorphisms: Risk of chronic renal failure. The gene discussed is ACE; the disease is chronic kidney disease.