Rationale and design of a randomised phase III registration trial investigating finerenone in participants with type 1 diabetes and chronic kidney disease: The FINE-ONE trial
Hiddo J.L. Heerspink, Andreas L. Birkenfeld, David Z.I. Cherney, Helen M. Colhoun, Linong Ji, Chantal Mathieu, Per‐Henrik Groop, Richard E. Pratley, Sylvia E. Rosas, Peter Rossing, Jay S. Skyler, Katherine R. Tuttle, Robert Lawatscheck, Charlie Scott, Robert Edfors, Markus F. Scheerer, Peter Kolkhof, Janet B. McGill
Abstract
Aims Despite guideline-recommended treatments, including renin angiotensin system inhibition, up to 40 % of individuals with type 1 diabetes develop chronic kidney disease (CKD) putting them at risk of kidney failure. Finerenone is approved to reduce the risk of kidney failure in individuals with type 2 diabetes. We postulate that finerenone will demonstrate benefits on kidney outcomes in people with type 1 diabetes. Methods FINE-ONE (NCT05901831) is a randomised, placebo-controlled, double-blind phase III trial of 7.5 months' duration in ∼220 adults with type 1 diabetes, urine albumin/creatinine ratio (UACR) of ≥ 200–< 5000 mg/g (≥ 22.6–< 565 mg/mmol) and eGFR of ≥ 25–< 90 ml/min/1.73 m 2 . Results The primary endpoint is relative change in UACR from baseline over 6 months. UACR is used as a bridging biomarker (BB), since the treatment effect of finerenone on UACR was associated with its efficacy on kidney outcomes in the type 2 diabetes trials. Based on regulatory authority feedback, UACR can be used as a BB for kidney outcomes to support registration of finerenone in type 1 diabetes, provided necessary criteria are met. Secondary outcomes include incidences of treatment-emergent adverse events, treatment-emergent serious adverse events and hyperkalaemia. Conclusions FINE-ONE will evaluate the efficacy and safety of finerenone in type 1 diabetes and CKD. Finerenone could become the first registered treatment for CKD associated with type 1 diabetes in almost 30 years. Trial registration: ClinicalTrials.gov NCT05901831.