The Effect of Psilocybin on MDD Symptom Severity and Synaptic Density

Abstract

PROTOCOL SYNOPSIS Title The effect of psilocybin on Major depressive disorder (MDD) symptom severity and synaptic density - a single dose randomized, double blind, placebo-controlled phase 2b positron emission tomography study Study Code PSIPET Name of Sponsor SLSO Organisationsnr: 232100-0016 Sponsor representative: Andreas Carlborg Norra Stockholms Psykiatri Vårdvägen 3 112 19 Stockholm Sweden Medical Monitor Inspira Medical AB Phase of Study Phase 2b Sample Size 30 randomized Name of Investigational Product (IP) Psilocybin, 3-\[2-(dimethylamino)ethyl\]-1H-indol-4-yl\] dihydrogen phosphate Name of Active Placebo Niacin EudraCT 2020-002790-94 Description of IP and Active Placebo PSIPET Protocol 5 200821 Page 14 Study Intervention Name: Psilocybin (active drug product) Niacin (active placebo product) Dosage formulation: One active capsule contains 25 mg of psilocybin One active placebo capsule contains 100 mg of niacin Capsule: Size 2 hydroxypropyl methylcellulose (HPMC), opaque Size 2 HPMC, opaque Unit dose strength: 25 mg 100 mg Route of Administration: Oral (solid dose) Oral (solid dose) Dosing instructions: One capsule administered with water One capsule administered with water Packaging and Labeling: Study Intervention will be provided in a high-density polyethylene (HDPE) bottle. Each bottle will contain one capsule (psilocybin or niacin) and will be labeled as required per Swedish requirement for blinded study.

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