CompletedPhase 1

Phase 1 Single and Multiple Ascending Dose of LTG-321 in Healthy Participants

New Zealand112 participantsStarted 2025-09-03

Plain-language summary

This is a first-in-human, randomized, double-blind, placebo-controlled Phase 1 single ascending dose (SAD) and multiple ascending dose (MAD) study to evaluate the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of orally administered LTG-321 in healthy male and female participants 18 to 55 years of age. The study will be conducted in New Zealand. The study also includes a randomized, double-blind, placebo-controlled, within-participant crossover evaluation of pain tolerance using a cold pressor test in healthy male participants 18 to 55 years of age. In addition, a randomized, open-label, crossover Food Effect cohort will evaluate the impact of a high-fat meal on the pharmacokinetics of LTG-321 following single oral doses in the fed and fasted state.

Who can participate

Age range

18 Years – 55 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Male and female participants aged 18 to 55 years, inclusive, at the time of signing the informed consent. * Overtly healthy with no clinically relevant abnormalities based on the medical history, physical examinations, clinical laboratory evaluations, and 12-lead ECG that, in the opinion of the investigator, would affect participant safety. * Body mass index (BMI) within the range of 18-30 kg/m2 (inclusive). Exclusion Criteria: * Inability to take oral medications or gastrointestinal abnormalities potentially impacting absorption. * Clinically significant cardiovascular, hematological, renal, hepatic, pulmonary, endocrine, gastrointestinal, immunological, dermatological, neurological, or psychiatric disease which could interfere with, or the treatment for which might interfere with, the conduct of the study or which would, in the opinion of the investigator, unacceptably increase the participant's risk by participating in the study. * Past or current history or evidence of alcohol abuse and/or dependence on recreational drug use * Donation of over 500 mL blood ≤ 3 months prior to start of participation * Participant is under legal custodianship.

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

To evaluate the Incidence, severity, seriousness, and causality of treatment-emergent adverse events (TEAEs) of single and multiple ascending oral doses of LTG-321 in healthy participants

Timeframe: Up to 14 days of dosing

To evaluate the Pain Detection and Tolerance Threshold during Cold Pressor Test of LTG-321 in healthy male participants.

Timeframe: Up to 5 days of dosing

Effect of Food on Pharmacokinetics of LTG-321

Timeframe: Up to approximately 48 hours post-dose in each treatment period

Trial details

NCT IDNCT07110610

SponsorLatigo Biotherapeutics

Sponsor typeINDUSTRY

Study typeINTERVENTIONAL

Primary completion2026-03-08

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