“…Examination of the kidneys from patients with multiple myeloma has failed to demonstrate characteristic changes in the glomeruli that can account for the frequent occurrence of renal insufficiency associated with this illness (Boulet, Mirouze, Pages, Barjon, Fabre, and Jaffiol, 1962;Hamburger, Richet, Crosnier, and Antoine, 1966;Kenis et al, 1966;Reubi, 1970;. The repeatedly described thickenings of the basement membrane, the increases in the numbers of epithelial, endothelial, and mesangial cells, as well as subepithelial deposits (Abrahams, Pirani, and Pollak, 1966;Costanza and Smoller, 1963;Fries, Bansilion, Brunat, Molinie, and Traeger, 1967;Kobemick and Whiteside, 1957;Rosen, Cortell, Adner, Papadopoulos, and Barry, 1967), are, according to Fisher, Perez-Stable, and Zawadzki (1964), more likely to be the result of an altered protein supply than the cause of renal disturbances.…”