About 60oof patients in myaloma weer failed to chronic renal failare. Many myeloma kidney were seen in patient of Bence-Jones type compared with macrogloblinaemia and so removal of free light chain in patient blood by adsorption is supposed to be meangful influence to kidney in order to at least minimized appearence of the symptoms. Amberlite XAD-7 has strong capacity of adsorption to Bence-Jones proteins.
