Pharmacokinetics and Tolerability of LC28-0126, a Novel Necrosis Inhibitor, After Multiple Ascending Doses: A Phase I Randomized, Double-blind, Placebo-controlled Study in Healthy Male Subjects

Abstract

PurposeLC28-0126 is a reactive oxygen species scavenger being developed for the treatment of various conditions caused by oxidative stress, such as oral mucositis, graft-versus-host disease, and lethal reperfusion injury in acute myocardial infarction. The aim of this study was to assess the tolerability and pharmacokinetic properties of LC28-0126 with multiple IV administrations in healthy male subjects. MethodsA dose-block–randomized, double-blind, placebo-controlled, multiple ascending-dose study was conducted. Subjects received 3-, 10-, 20-, or 30-mg doses of LC28-0126 or inactive control vehicle, infused over 30 min, once daily for 7 days. Blood and urine samples were collected for pharmacokinetics assessment. Tolerability was assessed by the documentation of adverse events, including abnormal findings on physical examination, vital sign measurements, blood oxygen saturation monitoring, 12-lead ECG, continuous ECG monitoring, and clinical laboratory testing. FindingsA total of 32 subjects completed the study. After multiple dosing, the plasma concentration of LC28-0126 showed a steep decrease after infusion, followed by slow elimination. Systemic exposure of LC28-0126 was increased proportionally to doses ranging from 3 to 30 mg. The accumulation ratios were 2.58–2.79 on multiple dosing. The fractions excreted unchanged in urine were found to be <5%. All reported drug-related adverse events were injection–site reactions, and no serious adverse events were reported. ImplicationsMultiple administrations of LC28-0126 exhibited a dose-proportional pharmacokinetic profile and were well tolerated at a dose range of 3–30 mg. ClinicalTrials.gov identifier: NCT03196804.