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Acute Effects of Partial GABA(A)-Receptor Modulation by GT-002 on Psychophysiological Measures: The TOTEMS Phase II Clinical Trial Targeting Cognitive Impairment Associated with Schizophrenia

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2024-519389-28-00
Enrollment
50
Registered
2025-02-14
Start date
Unknown
Completion date
Unknown
Last updated
2025-02-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Patients must meet diagnostic criteria for schizophrenia, persistent delusional disorder, acute and transient psychotic disorders, induced delusional disorders, schizoaffective disorders, other non-organic psychotic disorders or unspecified non-organic psychosis (ICD-10: F20.x; F22.x; F23.x; F24.x; F25.x; F28; F29)

Brief summary

Change in Pre-pulse Inhibition of the Startle Reflex (PPI) in schizophrenia spectrum patients following exposure to GT-002, placebo, or oxazepam. The primary analysis will assess the difference between 2 mg GT-002 and placebo.

Detailed description

Changes in the Mismatch Negativity (MMN) paradigm, Selective Attention (SA) paradigm, 40-Hz Auditory Steady-State Response (40-Hz ASSR) paradigm, and frequency bands at resting state in schizophrenia spectrum patients following exposure to GT-002, oxazepam, or placebo., Safety and tolerability in both antipsychotic-treated schizophrenia spectrum patients and healthy controls, as measured by reported adverse events (AEs) and visual analogue mood scales (VAMS)., Changes in the EEG paradigms due to the differential acute effects between GT-002, oxazepam, and placebo in healthy controls., Changes in cognition due to GT-002 compared to oxazepam and placebo in both schizophrenia spectrum patients and healthy controls., The impact of antipsychotic medication type and its duration, sex, age, diagnosis, and duration of illness (DOI) on the acute effect of GT-002 on the EEG paradigms in schizophrenia spectrum patients.

Interventions

DRUGPlacebo for GT-002: a placebo soft gelatine capsule that is identical to the 1 mg gt-002 soft gelatine capsule and contains no active drug substance.
DRUGGT-002
DRUGOxazepam "Alternova"
DRUGPlacebo for oxazepam: a placebo tablet containing no active drug substance
DRUGencapsulated to resemble the appearance of the encapsulated oxazepam tablet.

Sponsors

Region Hovedstadens Psykiatriske
Lead SponsorOTHER

Eligibility

Sex/Gender
All
Age
18 Years to 64 Years

Design outcomes

Primary

MeasureTime frame
Change in Pre-pulse Inhibition of the Startle Reflex (PPI) in schizophrenia spectrum patients following exposure to GT-002, placebo, or oxazepam. The primary analysis will assess the difference between 2 mg GT-002 and placebo.

Secondary

MeasureTime frame
Changes in the Mismatch Negativity (MMN) paradigm, Selective Attention (SA) paradigm, 40-Hz Auditory Steady-State Response (40-Hz ASSR) paradigm, and frequency bands at resting state in schizophrenia spectrum patients following exposure to GT-002, oxazepam, or placebo., Safety and tolerability in both antipsychotic-treated schizophrenia spectrum patients and healthy controls, as measured by reported adverse events (AEs) and visual analogue mood scales (VAMS)., Changes in the EEG paradigms due to the differential acute effects between GT-002, oxazepam, and placebo in healthy controls., Changes in cognition due to GT-002 compared to oxazepam and placebo in both schizophrenia spectrum patients and healthy controls., The impact of antipsychotic medication type and its duration, sex, age, diagnosis, and duration of illness (DOI) on the acute effect of GT-002 on the EEG paradigms in schizophrenia spectrum patients.

Countries

Denmark

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026