Ularitide as treatment of refractory ascites in cirrhosis- a study protocol for a randomised trial.

INTRODUCTION Ascites is a frequent complication to cirrhosis. When ascites becomes refractory to standard diuretic pharmacotherapy, patients are facing a median survival of less than one year and most likely a need for frequent hospitalisations due to large-volume paracentesis or complications. An unmet need exists for new and improved treatments of refractory ascites and the present study investigates the potential of the natriuretic peptide ularitide for this indication. METHODS We aim to investigate the effects, safety and tolerability of ularitide as treatment of refractory ascites in cirrhosis patients in a randomised, double-blind, placebo-controlled trial. Participants receive ularitide or placebo as a continuous intravenous infusion during hospitalisation as an add-on to any diuretic treatment. Clinical end points include increase in diuresis and natriuresis, reduction in body weight and waist circumference, safety end points, as well as changes in plasma concentrations of renal and systemic response biomarkers and hormones. CONCLUSION This study will provide evidence concerning the potential of ularitide in treating cirrhosis patients with refractory ascites. FUNDING This investigator-initiated trial is supported by ADS AIPHIA Development Services AG. TRIAL REGISTRATION Clinicaltrials.gov (NCT04311489) and EU Drug Regulating Authorities Clinical Trials (EudraCT: 2019-002268-28). The trial will be conducted in accordance with good clinical practice, the Declaration of Helsinki and applicable demands from Danish authorities.