NCT06537817

Brief Summary

The primary objectives of this study are to evaluate the safety and tolerability of HT-4253 when administered as single oral doses and multiple oral doses at escalating dose levels in healthy volunteer subjects. The secondary objectives of this study are to characterize the pharmacokinetics (PK) and pharmacodynamics (PD) of HT-4253.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
80

participants targeted

Target at P75+ for phase_1

Timeline
Completed

Started Sep 2024

Shorter than P25 for phase_1

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

July 30, 2024

Completed
6 days until next milestone

First Posted

Study publicly available on registry

August 5, 2024

Completed
1 month until next milestone

Study Start

First participant enrolled

September 17, 2024

Completed
8 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 12, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 12, 2025

Completed
Last Updated

June 11, 2025

Status Verified

June 1, 2025

Enrollment Period

8 months

First QC Date

July 30, 2024

Last Update Submit

June 6, 2025

Conditions

Outcome Measures

Primary Outcomes (4)

  • To evaluate the safety and tolerability of single and multiple ascending doses of oral HT-4253 in healthy adults

    Incidence of adverse events (AEs)

    up to 6 weeks

  • To evaluate the safety and tolerability of single and multiple ascending doses of oral HT-4253 in healthy adults

    Serious adverse events (SAEs)

    up to 6 weeks

  • To evaluate the safety and tolerability of single and multiple ascending doses of oral HT-4253 in healthy adults

    Treatment-related adverse events (TRAEs)

    up to 6 weeks

  • To evaluate the safety and tolerability of single and multiple ascending

    Incidence of withdrawals due to AE

    up to 6 weeks

Secondary Outcomes (4)

  • To evaluate the plasma pharmacokinetics (PK) of single and multiple ascending doses of oral HT-4253 in healthy adults

    up to 6 weeks

  • To evaluate the plasma pharmacokinetics (PK) of single and multiple ascending doses of oral HT-4253 in healthy adults

    up to 6 weeks

  • To evaluate the plasma pharmacokinetics (PK) of single and multiple ascending doses of oral HT-4253 in healthy adults

    up to 6 weeks

  • To evaluate the plasma pharmacokinetics (PK) of single and multiple ascending doses of oral HT-4253 in healthy adults

    up to 6 weeks

Study Arms (2)

HT-4253

EXPERIMENTAL

Subjects will participate in 1 of 10 groups and receive single or multiple doses of HT-4253 or matching placebo. In each group 6 subjects will receive HT-4253.

Drug: HT-4253

Placebo to match HT-4253

PLACEBO COMPARATOR

Subjects will participate in 1 of 10 groups and receive single or multiple doses of HT-4253 or matching placebo. In each group 2 subjects will receive matching placebo.

Drug: Placebo

Interventions

HT-4253 Single or Multiple doses administered orally as a tablet

HT-4253

Placebo to match HT-4253 Single or Multiple doses administered orally as a tablet

Placebo to match HT-4253

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age is ≥ 18 years to 65 years
  • Body mass index between 18 and 32 kg/m2
  • Female subjects must be surgically sterile or post menopausal for at least 12 months. Females may be of child-bearing potential but must use double contraception.

You may not qualify if:

  • Any clinically significant central nervous system, cardiac, pulmonary, renal, gastrointestinal, endocrinological, respiratory, or metabolic conditions (or history), or other pathological or physiological conditions,
  • History of suicidal behavior and/or ongoing suicidal ideation per C-SSRS evaluation when screening
  • Use of any medications, including prescription, over-the-counter (OTC) medications, vitamins, herbal preparations, and supplements
  • Positive drug screen or alcohol breath tests
  • History of heavy smoking more than 10 cigarettes a day or the tobacco/nicotine equivalent within 3 months of Screening or refuses to abstain from tobacco or nicotine-containing products throughout the duration of the study
  • Clinical significant abnormalities in laboratory test results
  • Chronic or current active infectious disease

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

CMAX Clinical Research

Adelaide, South Australia, 5000, Australia

Location

Study Design

Study Type
interventional
Phase
phase 1
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
SEQUENTIAL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 30, 2024

First Posted

August 5, 2024

Study Start

September 17, 2024

Primary Completion

May 12, 2025

Study Completion

May 12, 2025

Last Updated

June 11, 2025

Record last verified: 2025-06

Data Sharing

IPD Sharing
Will not share

Locations