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Could a new molecule tame a rare liver disease? early safety trial begins

NCT ID NCT03099603

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 11, 2026 · Last updated Aug 12, 2026 · Updated 1 time

Summary

This early-stage trial tests whether a single dose of HTD1801, an experimental drug for primary sclerosing cholangitis, is safe and tolerable in healthy adults. Researchers will monitor participants for side effects and measure how the drug moves through the body. The goal is to gather initial safety data to support further development of this potential treatment.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
HTD1801, an experimental small-molecule drug being developed for primary sclerosing cholangitis
What this could lead to
If safe and well-tolerated, HTD1801 could advance to larger studies and eventually offer a new treatment option for primary sclerosing cholangitis, a rare liver disease.
What could go wrong
This is an early, first-in-human study with only 32 healthy participants, so it cannot prove effectiveness. The drug may cause side effects or fail in later trials.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

32 people

The number who actually took part.

Started

Mar 2017

Finished

Oct 2017

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 50 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Age ≥18 to ≤ 50 years 2. Body mass index (BMI) ≥18.0 to ≤ 30.0 kg/m2 3. Current non-user of any nicotine containing products (\>6 months) 4. Females must be non-pregnant and non-lactating, and either surgically sterile (e.g., tubal occlusion, hysterectomy, bilateral salpingectomy, bilateral oophorectomy) or post-menopausal for ≥12 months. The site will try to retrieve medical records to document the sterility, however, the absence of records will not exclude screening the participant. If medical records cannot be obtained, serum and urine pregnancy testing will be conducted. Postmenopausal status will be confirmed through testing of FSH levels ≥ 40 IU/mL at screening for amenorrheic female participants \<50 years of age. Males must be surgically sterile (\>30 days since vasectomy with no viable sperm), abstinent or if engaged in sexual relations with a child-bearing potential, the participant and his partner must be using an acceptable, highly effective, contraceptive method from Screening and for a period of 60 days after the last dose of Study Drug. Acceptable methods of contraception are the use of condoms and an effective contraceptive for the female partner that includes: surgical sterilization (e.g., bilateral tubal ligation), hormonal contraception, or intrauterine contraception/device). The Principal Investigator will assess the adequacy of methods of contraception on a case-by-case basis. 5. Ability to provide written informed consent. Exclusion Criteria: 1. Participation in an investigational drug study within 30 days prior to dosing or 5 half-lives within the last dose of investigational product whichever is longer. 2. Current use of any prescription or over-the-counter (OTC) medications, including herbal products and supplements, within 14 days prior to Day 1 or 5 half-lives, whichever is longer. \[Use of ≤2 g per day of paracetamol (acetaminophen) is allowed prior to and during the study at Investigator discretion. The reason for use must be listed either in the subject's baseline information or as an adverse event.\] 3. Any use of non-steroid anti-inflammatory drugs (NSAIDs) within 7 days prior to dosing. 4. History of any serious adverse reaction or hypersensitivity to any of the product components. 5. Use of parenterally administered proteins or antibodies within 12 weeks of screening. (Note: Influenza vaccine will be allowed) 6. Glucose-6-phosphate dehydrogenase(G6PD) deficiency. 7. History of weight loss \> 5% in the 8 weeks prior to screening. 8. History of any active infection, other than mild viral illness, within 30 days prior to dosing. 9. History of alcohol or illicit drug abuse as judged by the Investigator within approximately 1 year 10. Use of any nicotine-containing product within 6 months prior to Screening or at any time during the study and follow-up as confirmed by urine cotinine screening. 11. Presence of clinically significant medical history, physical, laboratory, or ECG findings that, in the opinion of the Investigator, may potentially compromise the safety of the subject, or interfere with any aspect of study conduct or interpretation of results.

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Conditions

The condition(s) this trial relates to.

Cholangitis, Sclerosing primary sclerosing cholangitis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Nucleus Network Limited

    Melbourne, Victoria, 3004, Australia

More trials for these conditions

Other studies related to the condition(s) this trial covers.