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Healthy VolunteersPhase 1NCT05753956

Safety and Pharmacokinetics of GH002 in Healthy Volunteers

A Phase 1 study testing 5 Methoxy N,N Dimethyltryptamine in people with Healthy Volunteers, run by GH Research Ireland Limited at 1 site in Netherlands.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The primary objectives of this study are to investigate the safety and serum pharmacokinetics of 5-MeO-DMT in healthy volunteers in a double-blind, placebo-controlled, randomized study design with single, injected doses of GH002 and in an open-label, non-randomized study design with intra-subject dose-escalation of… Read more about this study

Who is it for?
Ages 18 to 45 yearsHealthy volunteers can take part
Conditions the study is for
Healthy Volunteers
What is being tested?
5 Methoxy N,N Dimethyltryptamine
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
64 participants
Where
1 siteNetherlands
Study dates
22 Dec 2022to 29 Nov 2023
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 45 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Has a body mass index (BMI) in the range of 18.5 and 35 kg/m2 (inclusive) at Screening.
  • Is deemed in good physical health by the investigator.
  • Is in good mental health in the opinion of the investigator and clinical psychologist

Who cannot join

  • Has known allergies or hypersensitivity or any other contra-indication to 5-MeO-DMT.
  • Has received any investigational medication, including investigational vaccines, within the 6 weeks prior to baseline
  • Has a current or past clinically significant condition, which renders the subject unsuitable for the trial according to the Investigator's judgement.

Trial locations and contacts

1 site in 1 country.

Netherlands1 site
  • GH Research Clinical Trial Site

    Groningen

Other trials in Netherlands

About this study

Official title: A Phase 1 Clinical Trial to Determine the Safety, Pharmacokinetics and Pharmacodynamics of Intravenous GH002 in Healthy Volunteers

The primary objectives of this study are to investigate the safety and serum pharmacokinetics of 5-MeO-DMT in healthy volunteers in a double-blind, placebo-controlled, randomized study design with single, injected doses of GH002 and in an open-label, non-randomized study design with intra-subject dose-escalation of GH002. As secondary objectives, the PK/ pharmacodynamic relationship, PD profile of GH002 as evaluated by its psychoactive effects and impact on cognitive performance, and the serum PK of the metabolite bufotenine are also assessed.

Being tested
5 Methoxy N,N Dimethyltryptamine, Placebo
Keywords
5-MeO-DMT, 5-methoxy-N,N-dimethyltryptamine, Healthy Volunteers, Pharmacokinetics, Mebufotenin

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • 5 Methoxy N,N DimethyltryptamineDrug

    Also called GH002, 5-MeO-DMT

    GH002 administered via i.v. bolus injection(s)

  • PlaceboDrug

    Also called GH002 placebo

    GH002 placebo administered via i.v. bolus injection

Study groups in NCT05753956
Study groupRoleWhat they receive
Cohort A: Dose A single doseExperimentalA single dose of GH002 or placebo administered by i.v. bolus injection (randomized as 6 active and 2 placebo subjects)
Receives: Drug: 5 Methoxy N,N Dimethyltryptamine; Drug: Placebo
Cohort B: Dose B single doseExperimentalA single dose of GH002 or placebo administered by i.v. bolus injection (randomized as 6 active and 2 placebo subjects)
Receives: Drug: 5 Methoxy N,N Dimethyltryptamine; Drug: Placebo
Cohort C: Dose C single doseExperimentalA single dose of GH002 or placebo administered by i.v. bolus injection (randomized as 6 active and 2 placebo subjects)
Receives: Drug: 5 Methoxy N,N Dimethyltryptamine; Drug: Placebo
Cohort D: Dose D single doseExperimentalA single dose of GH002 or placebo administered by i.v. bolus injection (randomized as 6 active and 2 placebo subjects)
Receives: Drug: 5 Methoxy N,N Dimethyltryptamine; Drug: Placebo
Cohort E: Dose E single doseExperimentalA single dose of GH002 or placebo administered by i.v. bolus injection (randomized as 6 active and 2 placebo subjects)
Receives: Drug: 5 Methoxy N,N Dimethyltryptamine; Drug: Placebo
Cohort F: Dose F single doseExperimentalA single dose of GH002 or placebo administered by i.v. bolus injection (randomized as 6 active and 2 placebo subjects)
Receives: Drug: 5 Methoxy N,N Dimethyltryptamine; Drug: Placebo
Cohort G: Dose G single doseExperimentalA single dose of GH002 or placebo administered by i.v. bolus injection (randomized as 6 active and 2 placebo subjects)
Receives: Drug: 5 Methoxy N,N Dimethyltryptamine; Drug: Placebo
Cohort J: Individualized Dosing RegimenExperimentalAdministration of up to 3 doses of GH002 within a single day (doses to be confirmed following review of data from single-dose part)
Receives: Drug: 5 Methoxy N,N Dimethyltryptamine

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Safety and tolerability: incidence of treatment emergent adverse events

    Adverse events reported in the study and coded by MedDRA.

    Measured: Up to 7 days

  2. Safety and tolerability: local tolerance (injection site reactions)

    Local infusion site findings will be assessed as none, mild, moderate and severe for the following signs and symptoms of the applicable site: dryness, redness, swelling, pain, tenderness, and itching and other.

    Measured: Up to discharge on dosing day

  3. Safety and tolerability: Clinically significant changes from baseline in ECG, vital signs and safety laboratory assessments

    Clinically significant changes in ECG include any significant change in rate or rhythm as determined by the principal investigator

    Measured: Up to 7 days

  4. Safety and tolerability: Assessment of sedation (Modified Observer's Assessment of Alertness and Sedation [MOAA/S]) following each dose and as part of the discharge evaluation on Day 0

    The Modified Observer's Assessment of Alertness and Sedation scale (MOAA/S) will be completed before and after GH002 dosing. Scored from 0 (deep sedation) to 5 (alert)

    Measured: Up to discharge on dosing day

  5. Safety and tolerability: Change from baseline in Clinician Administered Dissociative States Scale (CADSS)

    The CADSS comprises 19 subjective items, ranging from 0 'not at all' to 4 'extremely. Summed together, these subscales form a total dissociative score. Combined score ranges from 0 to 76

    Measured: Up to 7 days

  6. Safety and tolerability: Assessment of subject-discharge readiness at discharge on Day 0

    Assessment of Discharge Readiness on the administration day by the Principal Investigator, using the Clinical Assessment of Discharge Readiness (CADR).

    Measured: Up to discharge on dosing day

  7. Safety and tolerability: Columbia-Suicide Severity Rating Scale (C-SSRS) categorization based on the Columbia Classification Algorithm of Suicide Assessment (C-CASA).

    A detailed questionnaire assessing both suicidal behaviour and suicidal ideation.

    Measured: Up to 7 days

  8. Safety and tolerability: Change from baseline in Brief Psychiatric Rating Scale (BPRS).

    A scale to measure psychiatric symptoms. Each symptom is rated 1-7 and a total of 18 symptoms are scored. Combined score ranges from 18 to 126.

    Measured: Up to 7 days

  9. The pharmacokinetic (PK) parameters derived from laboratory assay results of the systemic levels of 5-MeO-DMT

    For PK analyses, blood samples will be collected before and up to 6 hours after the administration of GH002 to determine 5-MeO-DMT serum concentrations.

    Measured: Up to 6 hours

Secondary outcomes (10)
  1. Pharmacodynamic assessment: The dose-related psychoactive effects of GH002 as evaluated by a Visual Analogue Scale

    The Peak Experience Scale (PES) is a Visual Analogue Scale scored from 0-100

    Measured: Up to 1 hour after dosing

  2. Pharmacodynamic assessment: Challenging Experiences Questionnaire (CEQ)

    Completed by the subject after GH002 administration and assesses seven factors (grief, fear, death, insanity, isolation, physical distress, and paranoia) all scored from 0 to 5.

    Measured: Up to 1 hour after dosing

  3. Pharmacodynamic assessment: 30-Question Mystical Experience Questionnaire (MEQ30)

    The MEQ30 is a validated procedure for assessing the extent of the psychoactive effects experienced by a subject. The validated MEQ30 uses thirty assessment questions across four areas of experience, all scored from 0 to 5.

    Measured: Up to 1 hour after dosing

  4. Pharmacodynamic assessment: Duration of the psychoactive effects (PsE)

    The duration of the experience, defined as time in minutes from drug administration to time when the subject reports that any psychoactive symptoms have subsided will be recorded.

    Measured: Up to 1 hour after dosing

  5. PK/PD relationship(s) of 5-MeO-DMT

    In particular the correlation between Cmax and AUC with PES score and duration of PsE as scored by the investigator will be described

    Measured: Up to 1 hour after dosing

  6. Cognitive Function: Change from baseline in Rapid visual information processing (RVP) test

    A computerized test assessing the reaction time in response to a visual stimulus.

    Measured: Up to 7 days

  7. Cognitive Function: Change from baseline in Verbal recognition memory (VRM) test

    The VRM test is based on successive auditory presentations of 18-word lists followed by attempted recall.

    Measured: Up to 7 days

  8. Cognitive Function: Change from baseline in Spatial Working Memory (SWM) task

    The SWM test requires retention and manipulation of visuospatial information. This test has notable executive function demands, and measures strategy use as well as errors. In this task the subject has to search for tokens hidden in boxes on screen. The subject must touch a box to open the box to reveal either a yellow token or an empty box. Once the subject has found a yellow token, they must touch the outline of the right-hand side of the screen to 'store' it. The subject must then continue searching through the boxes until all of the tokens have been found. The test takes about 4 minutes to complete

    Measured: Up to 7 days

  9. Cognitive Function: Change from baseline in Digit Symbol Substitution Task (DSST)

    The DSST is a global measure of cognitive ability, requiring the engagement of multiple cognitive domains in order to complete effectively. A computerized test with the task is to match digits with symbols from encoding list. The number of digits correctly encoded within 90 seconds is the performance measure.

    Measured: Up to 7 days

  10. The pharmacokinetic (PK) parameters derived from laboratory assay results of the systemic levels of bufotenine

    For PK analyses, blood samples will be collected before and up to 6 hours after the administration of GH002 to determine bufotenine serum concentrations.

    Measured: Up to 6 hours

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted3 Mar 2023
  2. Study start22 Dec 2022
  3. Primary completion29 Nov 2023
  4. Study completion29 Nov 2023

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
This study will include separate single and multiple-dose parts. Single-dose Part: A double-blind, placebo-controlled, randomized, dose escalation design with single doses of GH002 delivered by i.v. bolus injection in 7 consecutive cohorts with 8 subjects per cohort (randomized as 6 active and 2 placebo): Cohort A: Dose A Cohort B: Dose B Cohort C: Dose C Cohort D: Dose D Cohort E: Dose E Cohort F: Dose F Cohort G: Dose G Up to 2 additional cohorts may be added before the IDR part is initiated. These will be named cohorts H and I, if needed. Multiple-Dose Part: An open-label, non-randomized design with up to 3 doses of GH002 administered to subjects by i.v. bolus injection(s) on a single day in one cohort of 8 subjects: Cohort J: Individualized Dosing Regimen with GH002. The exact doses of study drug to be administered will be determined after an unblinded review of the safety, PK and PD data from all of the cohorts in the single dose part of the trial
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
64 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05753956
Sponsor's protocol ID
GH002-HV-105
Other IDs
2022-002620-13
Status last verified
Jan 2024
First submitted
23 Feb 2023
Last updated
25 Jan 2024
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing 5 Methoxy N,N Dimethyltryptamine in people with Healthy Volunteers, run by GH Research Ireland Limited at 1 site in Netherlands.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 25 Jan 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Netherlands. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Safety and tolerability: incidence of treatment emergent adverse events (time frame: Up to 7 days). The study lists 9 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Jan 2024.

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