Understanding Ketamine's Dissociative Effects (KD Study)

Understanding Ketamine's Dissociative Effects in Epilepsy (KD Study)

The purpose of this study is to understand how ketamine brings about dissociative symptoms.

Study Overview

• Status: Recruiting
• Conditions: Epilepsy
• Intervention / Treatment: Drug: Ketamine

Detailed Description

The goal of this proposed research is to record the effects of ketamine on brain activity to understand the changes that occur during dissociation in epilepsy patients with stereoEEG.

• Study Type: Interventional
• Enrollment (Estimated): 20
• Phase: Phase 1

Contacts and Locations

• Study Contact: Name: Arjay Cordero; Phone Number: 650-580-9000; Email: arjayc@stanford.edu

Study Locations

• United States
  • California
    • Palo Alto, California, United States, 94305
      • Recruiting
      • Stanford University School of Medicine
      • Contact: Karl Deisseroth, MD, PhD

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Patient in Stanford Epilepsy Monitoring Unit
• Age >18 years old.

Exclusion Criteria:

• Lifetime psychotic or bipolar disorder
• Inability to speak, read or understand English
• Pregnant or nursing females
• Prior adverse ketamine response

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Other: Ketamine; Study participants will receive 0.5mg/kg of ketamine - one single infusion	Drug: Ketamine; Study participants will receive 0.5mg/kg of ketamine - one single infusion; Other Names: Ketalar

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of participants with dissociative events during ketamine infusion as assessed by CADSS (Clinician-Administered Dissociative State Scale)	The CADSS is an instrument for the measurement of dissociative symptoms. The CADSS comprises 23 subjective items and participant's responses are coded on a 5-point scale (0 = Not at all; 4 = Extreme). The higher the number on the CADSS, the more severe the symptoms.	up to 1 week

Collaborators and Investigators

• Sponsor: Stanford University
• Investigators: Principal Investigator: Karl Deisseroth, MD, PhD, Stanford University

Study record dates

Study Major Dates

• Study Start (Actual): July 26, 2021
• Primary Completion (Estimated): August 1, 2028
• Study Completion (Estimated): August 1, 2028

Study Registration Dates

• First Submitted: April 22, 2021
• First Submitted That Met QC Criteria: April 22, 2021
• First Posted (Actual): April 27, 2021

Study Record Updates

• Last Update Posted (Actual): April 22, 2026
• Last Update Submitted That Met QC Criteria: April 21, 2026
• Last Verified: April 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Epilepsy; Organic Chemicals; Hydrocarbons; Cyclohexanes; Cycloparaffins; Hydrocarbons, Alicyclic; Hydrocarbons, Cyclic; Ketamine
• Other Study ID Numbers: 60085

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: Yes