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A Study of Idazoxan in Healthy Participants

A Phase 1 Safety, Tolerability and Pharmacokinetic Study of R-Idazoxan HCl Extended-Release (TR-01-XRR), S-Idazoxan HCl Extended-Release (TR-01-XRS) and Racemic Idazoxan HCl Extended-Release (TR-01-XR) in Healthy Participants

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05727189
Enrollment
150
Registered
2023-02-14
Start date
2023-02-14
Completion date
2027-12-01
Last updated
2026-03-18

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

Conditions

Healthy

Brief summary

Four-part study of the safety, tolerability and pharmacokinetics of 3 forms of TR-01-XRR, 1 form of TR-01-XRS, and 1 form of TR-01-XR in healthy adults.

Interventions

DRUGTR-01-XRR (1)

Extended-release form

DRUGTR-01-XRR (2)

Extended-release form

DRUGTR-01-XRR (3)

Extended-release form

DRUGTR-01-XRS

Extended-release form

DRUGTR-01-XR

Extended-release form

DRUGTR-01-IR

Active comparator

DRUGPlacebo

Placebo comparator

Sponsors

Terran Biosciences Australia Pty Ltd
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Masking description

Part 1: Open Label Part 2: Double-blind Placebo Controlled Part 3: Double-blind Placebo Controlled Part 4: Open Label

Intervention model description

Part 1: Parallel group comparison, single dose level of 5 forms of the investigational study drug. Part 2: Parallel group comparison, single dose escalation (3 dose levels) of 4 forms investigational study drug and placebo. Part 3: Placebo controlled, multiple dose cross-over within 4 parallel group comparison. Part 4: Single-dose food effect cross-over.

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* BMI between 18 and 32 kg/m2 * Medically healthy without clinically significant or relevant medical history

Exclusion criteria

* Evidence of recurrent disease, physical illness or medical condition that could affect action, absorption or disposition of investigational products * Use of any prescription or over-the-counter medication that cannot be discontinued for the duration of the study * Impaired renal function * Cardiac abnormalities * Positive HIV, HBsAg or HCV * Positive test for alcohol, drugs of abuse or cotinine

Design outcomes

Primary

MeasureTime frameDescription
Number of participants with treatment-related adverse events based on clinical observation and participant reportThrough study completion up to 25 days after initial doseClinically observed adverse events include findings from physical examination, vital sign, ECG and laboratory assessments (hematological and clinical chemistry laboratory panels). Participant report includes any side effect reported by a participant during the study.
Area under the plasma concentration-time curve (AUC)Up to 120 hours after doseTo evaluate drug exposure over specified measurement time frame
Maximum plasma concentration (Cmax)Up to 120 hours after doseTo evaluate peak drug concentration achieved during specified measurement time frame
Time to maximum plasma concentration (Tmax)Up to 120 hours after doseTo evaluate time to achieve peak concentration during specified measurement time frame
Terminal elimination rate constantUp to 120 hours after doseTo evaluate rate of drug elimination
Terminal elimination half-life (T1/2)Up to 120 hours after doseTo evaluate time over which drug concentration is decreased by half
Apparent total clearance from plasma (CL/F)Up to 120 hours after doseTo evaluate rate of drug clearance
Apparent volume of distribution (Vz/F)Up to 120 hours after doseTo evaluate extent of drug distribution in the body

Secondary

MeasureTime frameDescription
Relative bioavailability (Frel)Over 120 hours after doseTo compare single dose oral bioavailability in fed and fasted states

Countries

Australia

Contacts

STUDY_DIRECTORRobert Fishman, MD

Clinical Lead Consultant

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 19, 2026