Effects of Psilocybin on Speech Fluency, Struggle, and Brain Activity in People Who Stutter

ConditionStuttering
Trial statusNot yet recruiting
Trial phasePhase 2
Trial typeInterventional
Biological sexAll
Age18-50
SponsorNYU Langone Health

About this trial

This Phase 2a clinical trial is an open-label, single-group, within-subjects pilot study designed to evaluate the safety, feasibility, and preliminary efficacy of psilocybin as a therapeutic intervention for adults with developmental stuttering. This pilot study will assess whether further research to explore the potential benefits of psilocybin-assisted therapy for improving clinical outcomes in individuals who stutter, is warranted. The aims of this study include:

* Aim 1: Assess the safety and feasibility of psilocybin as a therapeutic agent for stuttering. * Aim 2: Evaluate the effects of psilocybin on objective and subjective measures of stuttering severity, struggle, and well-being. * Aim 3: Explore the therapeutic neural mechanisms of psilocybin in stuttering.

Eligibility criteria

Qualifiers

Are able to provide voluntary informed consent

Are able to read, speak, and understand English, as documented during the informed consent process.

Are 18 to 50 years old, inclusive, at Screening visit.

Have diagnosis of mild-moderate to severe stuttering based on either the SSI-4 or OASES; also confirmed stuttering by stuttering specialist.

Disqualifiers

Pregnancy or lactation.

Seizure disorder

Significantly impaired liver function, defined as 1) alanine aminotransferase (ALT) and/or aspartate aminotransferase (AST) > 5 × upper limit of normal (ULN); 2) ALT or AST > 3 × ULN with concomitant total bilirubin > 2.0 × ULN; or 3) ALT or AST ≥ 3 × ULN with the appearance of fatigue, nausea, vomiting, right upper quadrant pain or tenderness, fever, rash, and/or eosinophilia.

Cardiovascular disease including coronary artery disease, angina, history of arrhythmia (unless a successful ablation has been performed), heart failure, history of heart valve replacement, and history of cerebrovascular accident or transient ischemic attack.

Trial design

Treatments tested in this trial

  • Psilocybin
  • Speech therapy

Treatment groups

25 Participants
are divided into 1 treatment group

Sponsors and collaborators