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AugmENtation witH cAnnabidiol iN first episode psyChosis: a doublE blind randomised controlled trial (STEP-ENHANCE Trial)

Status
Not yet recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2025-521929-32-01
Enrollment
104
Registered
2026-07-01
Start date
Unknown
Completion date
Unknown
Last updated
2026-07-02

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

Conditions

First Episode Psychosis (FEP)

Brief summary

Primary endpoint treatment period is the change in total PANSS score after 6 weeks of CBD or placebo treatment as an adjunct to standard treatment relative to baseline.

Detailed description

Treatment period: PANSS; CDSS, HAM-A, OASIS; WHOQOL_BREF and EQ-5D-3L; SOFAS and FROGS; All-cause discontinuation; GASS and adverse event reporting; CGI-S, CGI-I, PGI-I, PGI-S; PsyCog Battery; Biomarkers Long-term Follow-up period: PANSS; WHOQOL_BREF and EQ-5D-3L; SOFAS, FROGS, GF:S/R; CGI-S, CGI-I, PGI-I, PGI-S Biomarkers: (Epi)genetics, proteomics, inflammation, metabolomics, Redox markers, microbiome, neuroimaging (MRI/MRS) measures, PANSS

Interventions

DRUGCANNABIDIOL
DRUGPlacebo oral solution with beta-carotene. The placebo has no marketing authorisation
DRUGas it does not contain an active substance. it is produced solely for clinical trial use under good manufacturing practice (GMP).

Sponsors

University Of Oxford
Lead SponsorOTHER

Eligibility

Sex/Gender
All
Age
18 Years to 64 Years

Design outcomes

Primary

MeasureTime frame
Primary endpoint treatment period is the change in total PANSS score after 6 weeks of CBD or placebo treatment as an adjunct to standard treatment relative to baseline.

Secondary

MeasureTime frame
Treatment period: PANSS; CDSS, HAM-A, OASIS; WHOQOL_BREF and EQ-5D-3L; SOFAS and FROGS; All-cause discontinuation; GASS and adverse event reporting; CGI-S, CGI-I, PGI-I, PGI-S; PsyCog Battery; Biomarkers Long-term Follow-up period: PANSS; WHOQOL_BREF and EQ-5D-3L; SOFAS, FROGS, GF:S/R; CGI-S, CGI-I, PGI-I, PGI-S Biomarkers: (Epi)genetics, proteomics, inflammation, metabolomics, Redox markers, microbiome, neuroimaging (MRI/MRS) measures, PANSS

Outcome results

None listed

Source: EU CTIS · Data processed: Jul 3, 2026