An Ascending, Single and Multiple Dose(s), Double-Blind, Randomized, Placebo Controlled Study Assessing the Safety, Tolerability, and Pharmacokinetics of Intravenous OV350 in Healthy Male and Female Participants
Ovid Therapeutics Australia Pty Ltd
72 participants
Mar 7, 2025
Interventional
Conditions
Summary
OV350 is a brain penetrant, small molecule activator of the neuron-specific K+-Cl- co-transporter 2 (KCC2). KCC2 plays a critical role in maintaining chloride homeostasis in neurons through extrusion of chloride ions, thus ensuring the inhibitory function of GABAergic neurotransmission. Dysregulation of KCC2 can lead to an imbalance in excitatory and inhibitory signalling, contributing to disinhibition of neural circuits and downstream neuroinflammation. By directly activating KCC2, OV350 has the potential to restore abnormal neuronal excitatory/inhibitory balance notable in disease states, including psychosis of Neuronal a-Synuclein Disease (NSD). Part A will consist of approximately 5 cohorts, comprising 8 participants each. Dosing will be initiated at 50 mg/day. Subsequent cohorts will be dosed as recommended after the safety, tolerability and PK of IV OV350 from the previous cohort has been assessed. Doses will not increase more than 2x the previous dose tested. It is anticipated that Part B will consist of 4 planned cohorts comprising 8 participants each, using different doses of OV350.Dose levels for Part B (including starting dose) will be determined based on the overall safety and tolerability profile, PK data, and potentially EEG of OV350 after single ascending bolus dose(s). It is anticipated that the starting dose in MAD will be the second SAD dose but will be confirmed once the initial 2 SAD cohort data have been reviewed by the study sponsor, study PI, medical monitor, and pharmacokineticist. Participants will be dosed for a total of 7 days.
Eligibility
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Interventions
The study will be a Phase 1, single-center, randomized, double-blind, placebo-controlled, inpatient study of the safety and tolerability of single and multiple ascending dose(s) of intravenous OV350 in healthy male and female participants. The study is comprised of two parts: Part A, approximately 5 single ascending dose (SAD) administered as a 10-minute infusion starting at 50mg; and Part B, approximately 4 multiple ascending doses (MAD) administered once a day for 7 days. SAD and MAD cohorts can be conducted in parallel but dosing in a MAD cohort will only be initiated after the dose is cleared in a SAD cohort. The study sponsor, the study principal investigator (PI), medical monitor, and a pharmacokineticist will review data summaries from each cohort and recommend whether to proceed with dose escalation or MAD cohort dosing. The study will assess the safety profile of intravenous OV350 on ECG parameters, VS, physical and neurological examinations, hematology and chemistry laboratory results and adverse events (AEs). In addition, neurophysiologic PD variables in the study are quantitative EEG, particularly the timing and extent of EEG changes in relation to the doses administered. In each cohort, a sentinel group of 2 participants (1 active: 1 placebo) will be randomized and dosed ahead of the rest of the cohort. These 2 participants will be monitored for 2 days until the end of the in-patient portion of Part A (Day 3) and for 8 days for the in-patient portion of Part B (Day 9) before their available data will be reviewed by the Principal Investigator. The remaining 6 participants will be dosed once the Principal Investigator has concluded that it is safe to proceed with the rest of the cohort. Participants involved in SAD cohorts will not be eligible for inclusion in MAD cohorts, ensuring unique enrollment across both segments. Monitoring visits by the CRO to the study site will be made periodically during the study to ensure that all aspects of the protocol are followed.
Locations(1)
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ACTRN12625000428460