A Randomized, Double-Blind, Placebo-Controlled, Delayed-Start Study to Evaluate the Efficacy and Safety of Exaluren in Alport Syndrome Patients With Nonsense Mutations in COL4A3/4/5 Genes
This is a randomized, double-Blind, placebo-controlled study to evaluate the efficacy and safety of exaluren in Alport Syndrome patients with nonsense mutations in COL4A3/4/5 genes. Targeted 24 patients aged 12 and older will be enrolled in the trial. The study will be comprised of the following periods for each participant: * a Screening period of up to 6 weeks (42 days) * a total Treatment Period of exaluren 0.75 mg/kg or placebo administered daily subcutaneously for 32 weeks: Part 1: patients are randomized to either exaluren or placebo for 16 weeks. Part 2: all patients across both randomized arms receive exaluren for 16 additional weeks. * a safety/efficacy Follow-up Period of 4 weeks after the last treatment
• A confirmed diagnosis of X-linked or autosomal recessive Alport Syndrome with a documented nonsense mutation of COL4A5 in a male or nonsense mutation of COL4A3 or COL4A4 (male or female)
• eGFR\>45 ml/min/1.73 m2
• Urinary protein based on two spot urine collections \[urine protein/creatinine ratio (UPCR) ≥ 500 mg/g\]
• Stable regimen of ACEi/ARB for at least 12 weeks before Day 1