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A three-part study of GM 5022 in healthy adults, looking at safety, side effects, how the body processes the medicine, how the medicine works, and the effects of different doses and food

A Phase I three-part study of GM-5022 in healthy volunteers: single ascending dose (randomized placebo controlled); cross-over food effect; and multiple ascending dose (randomized placebo controlled) to investigate the safety, tolerability, pharmacokinetics, pharmacodynamics, and food effect

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN10927115
Enrollment
112
Registered
2026-04-28
Start date
2026-04-29
Completion date
Unknown
Last updated
2026-07-20

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

Conditions

Healthy volunteers Other

Interventions

Part A (single ascending dose [SAD]): Part A will test single oral doses of GM-5022 in healthy volunteers (HV) in a placebo-?controlled, double-blind design. Participants will be randomized to receive
only the pharmacy staff involved in handling the trial drug will be unblinded during the trial and will have access to the randomization list). The starting dose of GM-5022 will be 5 mg and subsequen
the order will be randomized 1:1. The dosing sessions will be separated by a 1-week washout period. Part C (multiple ascending dose [MAD]): Part C will test multiple ascending oral doses of GM-5022
only the pharmacy staff involved in handling the trial drug will be unblinded during the trial and will have access to the randomization list. Participants will receive daily oral doses of GM-5022 (or

Sponsors

Gilgamesh Pharma Inc.
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 55 Years

Inclusion criteria

Inclusion criteria: 1. Healthy adult males and females aged 18-55 years, inclusive 2. Body mass index (BMI) of 18.0–30.9 kg/m² (inclusive) at screening 3. Meets the following criteria for psychedelic experience 4. Willing and able to provide informed consent and comply with all trial requirements and study procedures after having discussed the trial with the investigator or their designee 5. Agrees to follow the contraception requirements of the trial (reliable method of contraception for male and female participants) 6. Agrees not to donate blood or blood products during the trial and for up to 3 months after the administration of the trial intervention

Exclusion criteria

Exclusion criteria: Medical history: 1. Female who is pregnant or lactating, or premenopausal who is sexually active and not using a reliable method of contraception 2. Clinically relevant abnormal history, physical findings, ECG, or laboratory values at screening that could interfere with the objectives of the trial or the safety of the participant 3. Presence of acute or chronic illness or history of chronic illness sufficient to invalidate the participant’s participation in the trial or make it unnecessarily hazardous, including impaired endocrine, thyroid, hepatic, respiratory or renal function, diabetes mellitus, or coronary heart disease, hepatitis B or C, or HIV 4. Presence or history of any relevant and/or significant psychiatric history, including personal or family history of psychotic mental illness or mania 5. Surgery (e.g., stomach bypass) or medical condition that might affect absorption of medicines 6. Presence or history of severe adverse reaction to any drug or the excipients present in the capsules 7. Significant risk of suicide, based on a history of suicidal ideation or behavior as assessed by the Columbia Suicide Severity Rating Scale (C-SSRS) 8. Any personal or familial history of epilepsy or other convulsive condition (except history of 1–2 febrile seizures occurring younger than age 5), previous significant head trauma or other factor predisposing to seizures

Design outcomes

Primary

MeasureTime frame
Safety and tolerability measured using adverse events (AEs), laboratory assessments (hematology, serum chemistry, urinalysis), vital signs, 12-lead electrocardiogram (ECG), and emergence of suicidal thoughts and ideations (C-?SSRS) at 0-24 h after dosing;Pharmacokinetics measured using plasma concentrations of GM-5022 to determine AUC, Cmax, t1/2, Tmax at 0-24 h after dosing

Countries

United States of America

Contacts

Public ContactGerard Marek
info@gilgameshpharmaceutical.com+1 (0)929 723 4861

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jul 23, 2026