CClinicalTrials.gg
CompletedNCT04336722Updated Jul 2, 2026

Efficacy and Safety of Odevixibat in Children With Biliary Atresia Who Have Undergone a Kasai HPE (BOLD)

A Phase 3 interventional study of Odevixibat and Placebo in Biliary Atresia, sponsored by Albireo, an Ipsen Company. Completed at 72 sites in 19 countries. Open to participants aged Up to 111 Days. Per ClinicalTrials.gov, last updated 2026-07-02.

Sponsored by Albireo, an Ipsen Company · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
254
Allocation
Randomized
Ages
Up to 111 Days
Sex
All
01

Study summary

Double-blind, randomized, placebo-controlled, Phase 3 study to investigate the efficacy and safety of odevixibat compared to placebo in children with biliary atresia who have undergone a Kasai hepatoportoenterostomy.

Read the detailed description

Up to 70 sites will be initiated for this study in North America, Europe, Middle East, and Asia Pacific.

02

Conditions studied

  • Biliary Atresia

Browse trials for

Keywords

  • Kasai
03

In context

Biliary Atresia

75 studies on the registry are indexed under Biliary Atresia; 25 are open to participants now.

This study's enrollment of 254 is above the median of 43 across 42 interventional studies indexed under Biliary Atresia.

Browse Biliary Atresia studies →

Lead sponsor

Albireo, an Ipsen Company is the lead sponsor of 5 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Up to 111 Days
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Inclusion Criteria:

  • A male or female patient with a clinical diagnosis of BA
  • Age at Kasai HPE ≤90 days
  • Eligible to start study treatment within 3 weeks post-Kasai HPE

Key Exclusion Criteria:

  • Patients with intractable ascites
  • Ileal resection surgery
  • ALT ≥10× upper limit of normal (ULN) at screening
  • Patients reliant only on total parenteral nutrition, or not able to take study medication orally, at randomization
  • Acute ascending cholangitis (patients may be randomized after resolution of acute ascending cholangitis)
  • Choledochal cystic disease
  • INR >1.6 (the patient may be treated with Vitamin K intravenously; sample may be redrawn and if INR is ≤1.6 at resampling the patient may be randomized)
  • Any other conditions or abnormalities, including congenital abnormalities, major cardiac surgery, hepatic, biliary, or GI disease which, in the opinion of the Investigator or Medical Monitor, may compromise the safety of the patient, the integrity of study results, or patient compliance with study requirements
  • Weight \<3.5kg at randomization
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
254 participants (actual)

Study arms

  • Experimental
    Odevixibat (A4250)

    Capsules for oral administration once daily for 104 weeks.

    Drug: Odevixibat

  • Placebo comparator
    Placebo

    Capsules for oral administration (to match active) once daily for 104 weeks.

    Drug: Placebo

Interventions

  • DrugOdevixibat

    Odevixibat is a small molecule and selective inhibitor of IBAT.

  • DrugPlacebo

    Placebo identical in appearance to experimental drug (odevixibat).

06

What researchers measure

Primary outcomes

  1. Time from randomization to first occurrence of liver transplant, or death

    Time frame: From baseline to Week 104

Secondary outcomes

  1. Proportion of patients with liver transplant

    Proportion of patients who are alive and have not undergone a liver transplant

    Time frame: From baseline to Week 104

  2. Time to onset of any sentinel events

    Time to onset of any sentinel events

    Time frame: From baseline to Week 104

  3. Total bilirubin levels

    Total bilirubin level after 13, 26, 52, and 104 weeks of study treatment

    Time frame: From baseline to Weeks 13, 26, 52 and 104

  4. Serum bile acid levels

    Serum bile acid level after 13, 26, 52, and 104 weeks of study treatment

    Time frame: From baseline to Weeks 13, 26, 52 and 104

  5. Time to pediatric end-stage liver disease (PELD) score >15

    Time to pediatric end-stage liver disease (PELD) score \>15

    Time frame: From baseline to Week 104

  6. Percentage of participants experiencing Adverse Events (AEs) and Serious Adverse Events (SAEs)

    An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention.

    Time frame: From baseline to Week 104

  7. Percentage of participants with clinically significant changes in Physical Examination

    Percentage of participants with clinically significant changes in physical examination findings will be reported. The clinical significance will be graded by the investigator.

    Time frame: From baseline to Week 104

  8. Percentage of participants with clinically significant changes in Laboratory Parameters (blood chemistry, hematology and coagulation)

    Percentage of participants with clinically significant change in laboratory parameters (blood chemistry, hematology and coagulation) will be reported. The clinical significance will be decided by the investigator.

    Time frame: From baseline to Week 104

  9. Percentage of participants with clinically significant changes in Abdominal Ultrasound findings

    Percentage of participants with clinically significant change in Abdominal Ultrasound findings will be reported. The clinical significance will be decided by the investigator.

    Time frame: From baseline to Week 26 and Week 104

07

Study locations

72 sites
  • Children's Hospital Los Angeles
    Los Angeles, California 90027, United States
  • Stanford Children's Health
    Palo Alto, California 94304, United States
  • Rady Children's Hospital
    San Diego, California 92123, United States
  • UCSF Benioff Children's Hospital San Francisco
    San Francisco, California 94158, United States
  • Children's Hospital Colorado
    Aurora, Colorado 80045, United States
  • Nemours/Alfred I. duPont Hospital for Children
    Wilmington, Delaware 19803, United States
  • Children's National Medical Center
    Washington D.C., District of Columbia 20010, United States
  • University of Miami
    Miami, Florida 33146, United States
  • Children's Healthcare of Atlanta - Emory University School of Medicine
    Atlanta, Georgia 30322, United States
  • Ann & Robert H. Lurie Children's Hospital
    Chicago, Illinois 60611, United States
  • Indiana University school of Medicine
    Indianapolis, Indiana 46202, United States
  • Johns Hopkins Children's Center
    Baltimore, Maryland 21287, United States
  • Boston Children's Hospital
    Boston, Massachusetts 02115, United States
  • University of Michigan Children's Hospital
    Ann Arbor, Michigan 48109, United States
  • Children's Mercy Hospital
    Kansas City, Missouri 64108, United States
  • Washington University in St. Louis
    St Louis, Missouri 63110, United States
  • NYU Grossman school of Medicine
    New York, New York 10016, United States
  • Icahn School of Medicine at Mount Sinai
    New York, New York 10029, United States
  • NewYork-Presbyterian Morgan Stanley Children's Hospital
    New York, New York 10032, United States
  • The Children's Hospital at Montefiore
    The Bronx, New York 10467, United States
  • Duke Central Tower
    Durham, North Carolina 27710, United States
  • Cincinnati Children's Hospital
    Cincinnati, Ohio 45229, United States
  • Cleveland Clinic
    Cleveland, Ohio 44195, United States
  • Oregon Health & Science University
    Portland, Oregon 97239, United States
  • The Children´s Hospital of Philadelphia
    Philadelphia, Pennsylvania 19104, United States
  • UPMC Children's Hospital of Pittsburgh
    Pittsburgh, Pennsylvania 15224, United States
  • UT Southwestern Medical Center
    Dallas, Texas 75390, United States
  • University of Utah
    Salt Lake City, Utah 84113, United States
  • Seattle Children's Hospital
    Seattle, Washington 98105, United States
  • Medical College of Wisconsin
    Milwaukee, Wisconsin 53226, United States
  • Women's and Children's Hospital (Women's and Children's Health Network, Incorporated.)
    North Adelaide, South Australia, Australia
  • Royal Children's Hospital
    Parkville, 3052, Australia
  • The Children´s Hospital at Westmead
    Sydney, Australia
  • Cliniques Universitaires Saint-Luc
    Brussels, Belgium
  • UZ Gent
    Ghent, Belgium
  • CHU Sainte-Justine
    Montreal, Canada
  • The Hospital for Sick Children
    Toronto, Canada
  • Guangzhou Women and Children's Medical Center
    Guangzhou, Guangdong, China
  • Children's Hospital of Fudan University
    Shanghai, China
  • Hôpital Femme Mère Enfant
    Bron, France
  • Bicêtre Hospital
    Le Kremlin-Bicêtre, France
  • Jeanne de Flandre Hospital
    Lille, France
  • Necker University Hospital - Enfants malades
    Paris, France
  • Charité - Universitätsmedizin Berlin
    Berlin, Germany
  • University Medical Center Hamburg-Eppendorf UKE
    Hamburg, Germany
  • Hannover Medical School
    Hanover, Germany
  • Dr von Hauner Children´s Hospital LMU
    Munich, Germany
  • University Children´s Hospital Tuebingen
    Tübingen, Germany
  • Semmelweis Egyetem I.sz Gyermekgyógyászati Klinika
    Budapest, Hungary
  • Shaare Zedek Medical Center
    Jerusalem, Israel
  • Schneider Children´s Medical Center of Israel
    Petah Tikva, Israel
  • ASST Papa Giovanni XXIII
    Bergamo, Italy
  • Meyer Children´s University Hospital
    Florence, Italy
  • University Hospital of Padova
    Padova, Italy
  • ISMETT - Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione
    Palermo, Italy
  • Ospedale Pediatrico Bambino Gesù
    Roma, Italy
  • Regina Margherita Children´s Hospital
    Turin, Italy
  • Hospital Raja Perempuan Zainab II
    Kota Bharu, Malaysia
  • University of Malaya Medical Centre
    Kuala Lumpur, Malaysia
  • University Medical Center Groningen
    Groningen, Netherlands
  • Starship Child Health
    Auckland, New Zealand
  • Instytut Pomnik-Centrum Zdrowia Dziecka
    Warsaw, Poland
  • Samsung Medical Center
    Seoul, South Korea
  • Seoul National University Children's Hospital
    Seoul, South Korea
  • Hospital Universitari Vall d'Hebron
    Barcelona, Spain
  • National Taiwan University Hospital
    Taipei, Taiwan
  • Taipei Veterans General Hospital
    Taipei, Taiwan
  • Hacettepe University Ihsan Dogramaci Childrens Hospital
    Ankara, Turkey (Türkiye)
  • Akdeniz University Medical Faculty
    Antalya, Turkey (Türkiye)
  • Istanbul University, Istanbul Medical Faculty
    Istanbul, Turkey (Türkiye)
  • Birmingham Women´s and Children´s Hospital
    Birmingham, United Kingdom
  • Leeds General Infirmary
    Leeds, United Kingdom
08

References and documents

Individual participant data

Plan to share: Yes — Qualified researchers may request access to patient level data and related study documents including the clinical study report, study protocol with any amendments, annotated case report form, statistical analysis plan, and dataset specifications. Patient level data will be anonymized and study documents will be redacted to protect the privacy of study participants.

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 2, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04336722
Lead sponsor
Albireo, an Ipsen Company
Responsible party
Sponsor
First posted
Apr 7, 2020
Start date
Jul 8, 2020
Primary completion
Jun 22, 2026
Completion
Jun 22, 2026
Last update
Jul 2, 2026

Study contacts

Ipsen Medical Director
study director · Ipsen

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion