Guard Therapeutics announced positive top-line results from a phase 1 study of its investigational drug ROSgard in individuals with renal impairment. The main aim of the study was to characterize the pharmacokinetic properties and safety profile of ROSgard in patients with renal impairment. The company believes that these results, together with previously reported positive results from a clinical phase 1 programme in healthy subjects, provide an excellent foundation for continued development of ROSgard in the area of acute kidney injury. Guard Therapeutics' investigational drug ROSgard has been shown in several preclinical studies to protect against cell and organ damage, including acute kidney injury, by counteracting oxidative stress and supporting regenerative processes. The investigational drug is initially being developed to prevent kidney injury in connection with cadiac surgery. In the study, ROSgard was administered in single doses to individuals with varying degrees of renal function. Interim results from the study have previously been reported for individuals with mild to moderate renal impairment (eGFR 45 mL/min). In the concluding part, individuals with more severe impairment of renal function were included (eGFR 15-44 mL/min). Overall, the results confirm a favourable safety profile as well as a clear association between renal impairment, prolonged plasma elimination time and higher exposure (AUC). The results provide important guidance for dosing strategies in future patient studies. An initial study in the primary target group for treatment ­ patients undergoing cardiac surgery with a high risk of developing acute kidney injury ­ is planned to be carried out in Germany and is expected to begin in the fourth quarter of 2020, subject to the necessary regulatory approvals.