A renal allograft recipient with late recurrence of focal and segmental glomerulosclerosis after switching from cyclosporine to tacrolimus.

Background.Focal and segmental glomerulosclerosis (FSGS) is one of the most frequent and severe primary glomerulonephritis that recurs in transplanted kidneys. Although cyclosporine seems to have no effect on the frequency of FSGS recurrence, there is evidence that cyclosporine reduces proteinuria a