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Progressive Familial Intrahepatic Cholestasis (PFIC)Phase 3NCT05543187

A Study of TAK-625 for the Treatment of Progressive Familial Intrahepatic Cholestasis (PFIC)

A Phase 3 study testing TAK-625 in people with Progressive Familial Intrahepatic Cholestasis (PFIC), run by Takeda at 8 sites in Japan.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The main aim of the study is to check if TAK-625 improves symptoms of Progressive Familial Intrahepatic Cholestasis (PFIC), side effect from the study treatment or TAK-625, and how much TAK-625 stays in their blood over time. Read more about this study

Who is it for?
Ages 1 month and older
What is being tested?
TAK-625
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
5 participants
Where
8 sitesJapan
Study dates
10 Jan 2023to 22 Jul 2025
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 1 month and older
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • The participant is Japanese male or female with a body weight >=3.0 kg and who is >=1 month of age at the time of informed consent.
  • The participant has a cholestasis as manifested by total serum bile acid (sBA) >=3^ upper limit of the normal range (ULN) (applies to the primary cohort only).
  • The participant has an average morning ItchRO (Obs) score >=1.5 during 4 consecutive weeks of the screening period, leading to the baseline visit (Week 0/Visit 2). Since it is difficult to evaluate pruritus in infants, participants <12 months of age at screening whose pruritus is unavoidably difficult to be evaluated are not necessarily required to meet the above score.
  • The caregiver has completed at least 21 valid* morning ItchRO (Obs) entries during 4 consecutive weeks of the screening period, leading to the baseline visit (Week 0/Visit 2) (*valid=completed and not answered as "I don't know"; the maximum allowed invalidreports=7, no more than 2 invalid reports during the last 7 days before the baseline visit [Week 0/Visit 2]).
  • The participant has a diagnosis of progressive familial intrahepatic cholestasis (PFIC) based on:
  • Chronic cholestasis as manifested by persistent (>6 months) pruritus in addition to biochemical abnormalities and/or pathological evidence of progressive liver disease. ( =<6 months is acceptable for participants <12 months of age).
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  • AND
  • For Primary cohort:
  • The participant has a genetic testing result consistent with disease-causing variation in ABCB11 (PFIC2), based on a genotyping.
  • For Supplemental cohort:
  • The participant has a genetic testing results consistent with disease causing variation in ATP8B1 (PFIC1), ABCB4 (PFIC3), or tight junction protein 2 gene (TJP2) (PFIC4), based on a genotyping.
  • The participant has a PFIC phenotype without a known mutation or with another known mutation not described above.
  • The PFIC participant has internal or external biliary diversion surgery history, and the internal or external biliary diversion surgery was reversed.
  • The participant (whenever possible) and caregiver are able to be contacted by phone for scheduled remote visits (participant contacts [phone calls]).
  • Both a caregiver and participant above the age of assent are capable of reading and understanding the questionnaires.
  • The same caregiver should be contacted during this study. The ItchRO (Obs) should be completed by the same caregiver for consistency during this study, even if the participant is an adult (over 18 years old).

Who cannot join

  • The diagnosed with PFIC2 due to ABCB11 mutation that predicts complete absence of BSEP function due to the type of ABCB11 mutation (t-PFIC2), based on a genotyping (applies to the primary cohort only).
  • The participant has a diagnosis of benign recurrent intrahepatic cholestasis indicated by a history of intermittent cholestasis with no disease progression.
  • The participant has a current or recent history (<1 year) of atopic dermatitis or other non-cholestatic diseases associated with pruritus.
  • The participant has a previous history of surgical interruption of the enterohepatic circulation (applies to the primary cohort only).
  • The participant with chronic diarrhea requiring intravenous (IV) fluid or nutritional intervention and/or its sequelae at screening or during the 6 months prior to screening.
  • The participant has a history of liver transplant or currently requires imminent liver transplant.
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  • The participant with decompensated cirrhosis (international normalized ratio [INR] >1.5, and/or albumin <30 g/L, history, or presence of clinically significant ascites, and/or variceal hemorrhage, and/or encephalopathy).
  • The participant has an alanine aminotransferase (ALT) or total serum bilirubin (TSB) level >15^ ULN at screening.
  • The participant has other liver disease.
  • The participant has any other disease or condition known to interfere with the absorption, distribution, metabolism, or excretion of drugs, including bile salt metabolism in the intestine (eg, inflammatory bowel disease), per investigator discretion.
  • The participant has a possible malignant liver mass in imaging, including screening ultrasound.
  • The participant has received bile acid, lipid binding resins or ileal bile acid transporter (IBAT) inhibitors within 28 days prior to screening and throughout the trial.
  • The participant who has received sodium phenylbutyrate for less than 6 months at the initiation of screening.

Trial locations and contacts

8 sites in 1 country.

8 sites in 1 country

Japan8 sites
  • Juntendo University Hospital

    Bunkyo-ku, Tokyo

  • Kyushu University Hospital

    Fukuoka

  • Kyoto University Hospital

    Kyoto

  • Saitama Prefectural Children's Medical Center

    Saitama

  • Osaka University Hospital

    Suita, Osaka

  • University of Tsukuba Hospital

    Tsukuba, Ibaraki

  • Tsuyama Chuo Hospital

    Tsuyama, Okayama-ken

  • Yokohamashi Tobu Hospital

    Yokohama, Kanagawa

Other trials in Japan

About this study

Official title: An Open-Label, Phase 3 Study to Evaluate the Efficacy and Safety of TAK-625 in the Treatment of Subjects With Progressive Familial Intrahepatic Cholestasis

The main aim of the study is to check if TAK-625 improves symptoms of Progressive Familial Intrahepatic Cholestasis (PFIC), side effect from the study treatment or TAK-625, and how much TAK-625 stays in their blood over time. This will help the study sponsor (Takeda) to work out the best dose to give people in the future.

The participants will be treated with TAK-625 for up to the end of study (about 34 months).

Participants will visit their study clinic 15 times from the start of study. After 15 times visits, participants will visit their study clinic every 12 weeks up to the end of study.

Being tested
TAK-625
Medical subject headings
Cholestasis, progressive familial intrahepatic 1

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • TAK-625Drug

    Also called Maralixibat chloride

    TAK-625 orally, twice daily (BID)

Study groups in NCT05543187
Study groupRoleWhat they receive
TAK-625, Primary cohortExperimentalTAK-625 orally, twice daily (BID) for 4 weeks as Dose Escalation Period. The dose in Dose Escalation Period will be increased weekly, 150 mcg/kilograms (kg), 300 mcg/kg, 450 mcg/kg, and 600 mcg/kg. After Dose Escalation Period, TAK-625 600 mcg/kg (or maximum tolerated dose [MTD]), orally, BID up to study completion.
Receives: Drug: TAK-625
TAK-625, Supplemental cohortExperimentalTAK-625 orally, twice daily (BID) for 4 weeks as Dose Escalation Period. The dose in Dose Escalation Period will be increased weekly, 150 mcg/kilograms (kg), 300 mcg/kg, 450 mcg/kg, and 600 mcg/kg. After Dose Escalation Period, TAK-625 600 mcg/kg (or maximum tolerated dose [MTD]), orally, BID up to study completion.
Receives: Drug: TAK-625

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in the Average Morning Itch Reported Outcome (ItchRO) (Observer Instrument [Obs]) Severity Score Between Baseline and the Average of Week 15 Through Week 26

    The ItchRO (Obs) scale measures severity of pruritus. The score on ItchRO (Obs) scale ranged from 0 to 4, where 0=None observed or reported, 1=Mild, 2=Moderate, 3=Severe, 4=Very severe. A higher score indicated more severe pruritus. Average baseline morning ItchRO (Obs) scores were calculated as sum of the morning scores divided by number of morning scores for the 4-week (28 days) time periods (that is [i.e.], Day -28 to Day -1). Average morning ItchRO (Obs) scores Week 15 through Week 26 were calculated as the sum of the morning scores divided by the number of morning scores from Week 15 to Week 26. Change was calculated as: Average value of Weeks 15 to 26 - Average value of Baseline (Day -28 to Day -1).

    Measured: Baseline to Week 15 through Week 26

Secondary outcomes (4)
  1. Change in the Average Morning ItchRO (Obs) Frequency Score Between Baseline and the Average of Week 15 Through Week 26

    The ItchRO (Obs) scale measures frequency of pruritus. The score on ItchRO (Obs) scale ranged from 0 to 4, where 0=None observed or reported, 1= A little bit of the time, 2= Some of the time, 3= Most of the time, 4= Almost all of the time/constantly, I don't know) to describe their pruritus condition. 'I don't know' was categorized as missing data. A higher score indicated more severe pruritus. Baseline average morning ItchRO (Obs) frequency scores were calculated as the sum of the morning frequency scores divided by the number of morning severity scores for the 4-week (28 days) time periods. (i.e., Day -28 to Day -1). Average morning ItchRO (Obs) frequency scores of Week 15 through Week 26 were calculated as the sum of the morning frequency scores divided by the number of mornings frequency scores from Week 15 to Week 26. Change was calculated as: Average value of Weeks 15 to 26 - Average value of Baseline (Day -28 to Day -1).

    Measured: Baseline to Week 15 through Week 26

  2. Change From Baseline in Total Serum Bile Acid (sBA) Levels to Week 26

    Change from baseline was calculated as: Post-baseline observed value - Baseline (before first dosing) observed value. Change from baseline in total sBA levels to Week 26 was reported.

    Measured: Baseline to Week 26

  3. Percentage of Participants (Responders) Who Experienced an sBA Control From Baseline Through Week 26

    Responders to sBA control were defined as participants who achieved a decrease to less than (<) 102 mcmol/L, a decrease of greater than (>) 75 percentage (%), or normalization at any timepoint from baseline through Week 26.

    Measured: Baseline through Week 26

  4. Change in the ItchRO (Obs) Weekly Average Severity Between Baseline and the Average of Week 15 Through Week 26

    ItchRO (Obs) scale measures severity of pruritus, score ranged from 0 to 4, where 0=None observed or reported, 1=Mild, 2=Moderate, 3=Severe, 4=Very severe. A higher score indicated more severe pruritus. Weekly average severity was calculated based on daily maximum severity scores from both morning and evening. Average baseline morning and evening ItchRO (Obs) scores were calculated as sum of morning or evening scores divided by number of morning or evening scores for 4-week (28 days) time periods (i.e., Day -28 to Day -1). Average morning and evening ItchRO (Obs) scores Week 15 to Week 26 were calculated as sum of morning or evening scores divided by number of morning or evening scores from Week 15 to Week 26. Change was calculated as: Average value of Weeks 15 to 26 - Average value of Baseline (Day -28 to Day -1).

    Measured: Baseline to Week 15 through Week 26

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted16 Sep 2022
  2. Study start10 Jan 2023
  3. Primary completion4 Sep 2023
  4. Study completion22 Jul 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Single group
Masking
None (open label)
Enrolment
5 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05543187
Sponsor's protocol ID
TAK-625-3002
Other IDs
jRCT2031220356
Status last verified
Jan 2026
First submitted
14 Sep 2022
Last updated
28 Jan 2026
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No: De-identified individual participant data from this particular study will not be shared as there is a reasonable likelihood that individual patients could be re-identified (due to the limited number of study participants/study sites).

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing TAK-625 in people with Progressive Familial Intrahepatic Cholestasis (PFIC), run by Takeda at 8 sites in Japan.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 16 inclusion and 13 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 28 Jan 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 8 sites in Japan. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 24 Sep 2024). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in the Average Morning Itch Reported Outcome (ItchRO) (Observer Instrument [Obs]) Severity Score Between Baseline and the Average of Week 15 Through Week 26 (time frame: Baseline to Week 15 through Week 26). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Jan 2026.

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