Clinical-stage biopharma company atai Life Sciences ATAI announced the dosing of the first subject in majority-owned subsidiary Perception Neuroscience’s Phase 1 intravenous-to-subcutaneous bridging study of proprietary R-ketamine, PCN-101.

Open-label, the trial is set to assess safety, tolerability and pharmacokinetic profile of 60mg, 90mg and 120mg of PCN-101 delivered subcutaneously as compared to 60mg of the compound delivered intravenously in 16 healthy volunteers across four cohorts.

PCN-101 is a single isomer of ketamine and belongs to a new generation of glutamate receptor modulators -pharmacologically, it works as a non-competitive NMDA receptor antagonist- that holds the potential for rapid-acting antidepressant activity and anti-suicidal effects.

Although atai’s Phase 2a study on a single IV administration of 30mg and 60mg of PCN-101 in patients with Treatment-Resistant Depression didn’t reach the primary endpoint, it demonstrated “an encouraging safety profile and signals of efficacy across all time points out to two weeks, potentially indicating a sustained duration of effect,” says the company.

The present IV-to-subcutaneous bridging study, with expected completion in mid-2023, will potentially inform dosing regimens of the new subcutaneous formulation of PCN-101 for future studies, supporting further exploration of the potential of R-ketamine as a rapid-acting antidepressant for at-home use.

Benzinga’s Psychedelics Capital Conference

The PCC took place in Miami on April 13th. For those who couldn’t make it, here are some of the conference’s highlights:

EXCLUSIVE: Investing In The Unique Growth Market Of Psychedelics

EXCLUSIVE: Infrastructure Built For Healing: 'Consolidation And Legitimacy Are Crucial For Psychedelic Industry Growth'

EXCLUSIVE: Ketamine Therapy Leaders Share Bold Vision For Future At Benzinga's Psychedelics Capital Conference

EXCLUSIVE: In Reinventing Mental Health & Next-Gen Psychedelics, 'Access And Clinical Data Are Key'

EXCLUSIVE: Making The World A Better Place, How Psychedelics Are Helping

Photo: Benzinga edit with photo by True Touch Lifestyle on Shutterstock and Wikimedia Commons.