A quick pill and an EEG may spot schizophrenia in hours, not years
NCT ID NCT03781115
First seen Jul 08, 2026 · Last updated Jul 09, 2026 · Updated 1 time
Summary
This study explores whether people with schizophrenia resist the sedating effects of antipsychotic drugs like ziprasidone and olanzapine. Researchers give a single dose to both patients and healthy volunteers, then measure sleepiness, reflexes, and brain activity using EEG. If patients stay more alert than healthy people, those differences could form the basis of a rapid, low-cost diagnostic test for schizophrenia.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Ziprasidone (Geodon) and Olanzapine (Zyprexa) — antipsychotic drugs used as a single-dose diagnostic probe
- What this could lead to
- If it works, this could lead to a simple, inexpensive diagnostic test for schizophrenia, reducing the months or years it often takes to get a clear diagnosis.
- What could go wrong
- This is a small early-phase study with only 24 participants, so results may not apply broadly. The test relies on subjective sleepiness scales and EEG changes, which may not be reliable enough for a definitive diagnosis.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
-
About 24 people
The number the study aims to enrol. It can still change while the study runs.
- Started
-
Nov 2017
- Expected to finish
-
Feb 2027
An estimate. End dates often move.
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 40 years
- Sex
-
Anyone
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria Healthy Control 1. Be between 18 and 40 years of age 2. Be able to understand English 3. Have no history of psychosis 4. Have no history of sleep apnea, heart condition or seizure 5. Have no known drug allergies 6. The ability to swallow a pill Exclusion Criteria Healthy control 1. Refuse to sign the consent form 2. Drink caffeine or alcohol within 24 hours of the study 3. Have the EKG readout report borderline or abnormal ECG 4. Have the 12 panel urine drug screen show a positive result 5. Be pregnant Inclusion Criteria Schizophrenic subject 1. Be between 18 and 40 years of age 2. Be able to understand English 3. Have been diagnosed with a Schizophrenia Spectrum or other psychotic disorder 4. Belong to one of three groups: 1. Never medicated patients with a first episode of psychosis 2. Have not received long acting injectable (depot) antipsychotic in previous 6 months 3. Have not received oral antipsychotic (or antidepressant that has serotonergic action) in previous 2 weeks 5. Have no history of sleep apnea, heart condition or seizure 6. Have no known drug allergies 7. Be able to swallow a pill 8. Healthy as determined by the enrolling physician(s) Exclusion Criteria Schizophrenic subject 1. Refuse to sign the consent form 2. Drink caffeine or alcohol within 24 hours of the study 3. Have the EKG readout report borderline or abnormal ECG 4. Have the 12 panel urine drug screen show a positive result 5. Be pregnant
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Banner University Medical Center
Phoenix, Arizona, 85006, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can antipsychotics rewire the Brain's dopamine system? a scan study investigates
- Can a nasal insulin spray rev up brain energy and sharpen thinking in psychosis?
- Can talk therapy and social coaching ease early psychosis?
- Can a magnetic pulse to the brain curb Drug-Related weight gain?
- Can virtual reality from home sharpen social skills in schizophrenia?