Efficacy and Safety Study to Delay Renal Failure in Children With Alport Syndrome

Summary

This is a phase III, multi-centre, randomised, placebo-controlled, patient and investigator-blind study in paediatric patients with early stages of Alport syndrome to assess the safety and efficacy of the ACEi ramipril in slowing disease progression. Alport syndrome stages that describe the extent of renal damage and loss of function are defined as: * 0 Microhaematuria without microalbuminuria (usually at birth) * I Microalbuminuria (30-300 mg albumin/gCrea) * II Proteinuria \>300 mg albumin/gCrea * III \> 25% decline of normal renal function (creatinine clearance) * IV End stage renal failure (ESRF) Eligible patients with Alport stages 0 and I will be randomly assigned at a 2:1 ratio to receive once daily ramipril or placebo. In addition, Alport stage II patients may be treated open Label. Eligible patients who, or whose parents/legal guardian refuse randomisation after eligibility is confirmed, and patients who have been treated with ramipril prior to the study, may be treated open-label with ramipril as per protocol. The total number of patients will not exceed 120, with the number of randomised patients not exceeding 60, and the number of patients treated open label from Day 1 of the study aimed to be approximately 60. Randomised patients whose disease progresses to the next disease level during the 3 year treatment period will be unblinded, and open label ramipril treatment will be initiated and continued, respectively, depending on prior treatment randomisation.

Timeline

Start

2012-03

Primary completion

2018-09

Completion

2019-03

Publications

• Results Gross O, Tonshoff B, Weber LT, Pape L, Latta K, Fehrenbach H, Lange-Sperandio B, Zappel H, Hoyer P, Staude H, Konig S, John U, Gellermann J, Hoppe B, Galiano M, Hoecker B, Ehren R, Lerch C, Kashtan CE, Harden M, Boeckhaus J, Friede T; German Pediatric Nephrology (GPN) Study Group and EARLY PRO-TECT Alport Investigators. A multicenter, randomized, placebo-controlled, double-blind phase 3 trial with open-arm comparison indicates safety and efficacy of nephroprotective therapy with ramipril in children with Alport's syndrome. Kidney Int. 2020 Jun;97(6):1275-1286. doi: 10.1016/j.kint.2019.12.015. Epub 2020 Jan 17.
• Kashtan CE, Gross O. Clinical practice recommendations for the diagnosis and management of Alport syndrome in children, adolescents, and young adults-an update for 2020. Pediatr Nephrol. 2021 Mar;36(3):711-719. doi: 10.1007/s00467-020-04819-6. Epub 2020 Nov 6.
• Boeckhaus J, Hoefele J, Riedhammer KM, Tonshoff B, Ehren R, Pape L, Latta K, Fehrenbach H, Lange-Sperandio B, Kettwig M, Hoyer P, Staude H, Konrad M, John U, Gellermann J, Hoppe B, Galiano M, Gessner M, Pohl M, Bergmann C, Friede T, Gross O; GPN Study Group and EARLY PRO-TECT Alport Investigators. Precise variant interpretation, phenotype ascertainment, and genotype-phenotype correlation of children in the EARLY PRO-TECT Alport trial. Clin Genet. 2021 Jan;99(1):143-156. doi: 10.1111/cge.13861. Epub 2020 Oct 25.
• Ahmed R, Duerr U, Gavenis K, Hilgers R, Gross O. Challenges for academic investigator-initiated pediatric trials for rare diseases. Clin Ther. 2014 Feb 1;36(2):184-90. doi: 10.1016/j.clinthera.2014.01.013.

Drugs

Indications