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

A Double-Blind, Randomized, Placebo-Controlled Study to Evaluate the Efficacy and Safety of Odevixibat (A4250) in Children With Biliary Atresia Who Have Undergone a Kasai Hepatoportoenterostomy

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04336722
Enrollment
254
Registered
2020-04-07
Start date
2020-07-08
Completion date
2026-06-22
Last updated
2026-07-02

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

Conditions

Biliary Atresia

Keywords

Kasai

Brief 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.

Detailed description

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

Interventions

Odevixibat is a small molecule and selective inhibitor of IBAT.

DRUGPlacebo

Placebo identical in appearance to experimental drug (odevixibat).

Sponsors

Albireo, an Ipsen Company
Lead SponsorINDUSTRY

Study design

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

Eligibility

Sex/Gender
ALL
Age
No minimum to 111 Days
Healthy volunteers
No

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

Design outcomes

Primary

MeasureTime frame
Time from randomization to first occurrence of liver transplant, or deathFrom baseline to Week 104

Secondary

MeasureTime frameDescription
Proportion of patients with liver transplantFrom baseline to Week 104Proportion of patients who are alive and have not undergone a liver transplant
Time to onset of any sentinel eventsFrom baseline to Week 104Time to onset of any sentinel events
Total bilirubin levelsFrom baseline to Weeks 13, 26, 52 and 104Total bilirubin level after 13, 26, 52, and 104 weeks of study treatment
Serum bile acid levelsFrom baseline to Weeks 13, 26, 52 and 104Serum bile acid level after 13, 26, 52, and 104 weeks of study treatment
Time to pediatric end-stage liver disease (PELD) score >15From baseline to Week 104Time to pediatric end-stage liver disease (PELD) score \>15
Percentage of participants experiencing Adverse Events (AEs) and Serious Adverse Events (SAEs)From baseline to Week 104An 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.
Percentage of participants with clinically significant changes in Physical ExaminationFrom baseline to Week 104Percentage of participants with clinically significant changes in physical examination findings will be reported. The clinical significance will be graded by the investigator.
Percentage of participants with clinically significant changes in Laboratory Parameters (blood chemistry, hematology and coagulation)From baseline to Week 104Percentage 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.
Percentage of participants with clinically significant changes in Abdominal Ultrasound findingsFrom baseline to Week 26 and Week 104Percentage of participants with clinically significant change in Abdominal Ultrasound findings will be reported. The clinical significance will be decided by the investigator.

Countries

Australia, Belgium, Canada, China, France, Germany, Hungary, Israel, Italy, Malaysia, Netherlands, New Zealand, Poland, South Korea, Spain, Taiwan, Turkey (Türkiye), United Kingdom, United States

Contacts

STUDY_DIRECTORIpsen Medical Director

Ipsen

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 3, 2026