Chronic Kidney Disease Clinical Trial
Official title:
A Phase II, Single Centre, Randomised, Placebo-controlled, 3-part Trial to Assess the Safety, Tolerability and Efficacy of Zibotentan in Patients With Renal Disease Secondary to Scleroderma
Many patients with scleroderma have damage to their kidneys caused by the disease. There is
limited evidence for treatments to prevent this damage or stop it progressing. Blocking a
substance in the blood called endothelin has helped treat some aspects of scleroderma. The
purpose of this study is to see how effective a new endothelin blocker called Zibotentan is
in treating patients who have scleroderma and have gone on to develop reduced kidney function
as a complication. It will be given in addition to the accepted treatments used for
scleroderma. There will be three parts to this study each for a different group of patients:
- ZEBRA 1 for patients with mild or moderate kidney disease caused by scleroderma
- ZEBRA 2A for patients with a more severe, acute form of kidney disease caused by
scleroderma (scleroderma renal crisis) who do not require dialysis
- ZEBRA 2B for patients who have had scleroderma renal crisis and are on dialysis
This is a 3-part study (Zebra 1, 2A and 2B) that will explore safety and therapeutic
potential of Zibotentan in acute and chronic renal complications of Scleroderma. Trial
duration will be 52 weeks for Zebra 1 and 2A (1 or 2 weeks for ZEBRA 2B with 1 year follow up
data). Scleroderma (Systemic sclerosis) is a multisystem rheumatic disease that results in
vascular damage and fibrosis of target organs.This project will focus specifically on the
evaluation and treatment of renal disease in scleroderma.
Renal involvement in Scleroderma occurs with a variety of different pathologiesÍž hypertensive
scleroderma renal crisis (SRC) being the most dramatic manifestation but milder forms of
chronic renal disease are frequent and represent an important clinical feature.
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