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Withdrawn Phase 1Phase 2 Interventional

Nicotinic Receptors and Schizophrenia

ClinicalTrials.gov ID: NCT02538081

Public ClinicalTrials.gov record NCT02538081. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Nov 6, 2026, 7:15 PM EST

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Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This study proposes to conduct a clinical trial comparison of olanzapine and the combination of a nicotinic cholinergic agonist, 3-\[2,4-Dimethoxybenzylidene\]anabaseine (DMXB-A) with a dopamine D2 receptor antagonist, the mechanism common to all antipsychotic drugs, to test the hypothesis that 7-nicotinic receptor agonism may be an additional necessary factor that enhances the efficacy of olanzapine that allows its slight superiority to risperidone. This trial would enroll patients taking olanzapine and record baseline measurements of clinical symptoms, cognition, metabolic parameters, and extrapyramidal side effects. The subjects would then be randomized to receive either risperidone or risperidone plus DMXB-A for 6 weeks and then would again have measurements of clinical symptoms, cognition, metabolic parameters and extrapyramidal side effects.

Study identification

NCT ID
NCT02538081
Recruitment status
Withdrawn
Study type
Interventional
Phase
Phase 1, Phase 2
Enrollment
Not listed

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years to 70 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Aug 2015 (Actual)
Primary completion
Aug 2016 (Actual)
Completion
Aug 2016 (Actual)
Last update posted
May 30, 2017

2015 – 2016

United States locations

U.S. sites
1
U.S. states
1
U.S. cities
1
Facility City State ZIP Site status
VA Eastern Colorado Health Care System, Denver, CO Denver Colorado 80220 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT02538081, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted May 30, 2017 · Synced Nov 6, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT02538081 live on ClinicalTrials.gov.

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