How Creatinine Be Controlled with FSGS

How Creatinine Be Controlled with FSGSFocal Segmental Glomerulonephritis means scar tissue develops on the parts of glomeruli. In the early stage of FSGS, it may do nothing with creatinine level, but with the progression of FSGS, more and more glomeruli are sclerosis so that creatinine can not be removed out of the blood timely, and then creatinine level increases quickly. How creatinine be controlled with FSGS?