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Efficacy and Safety of Subcutaneous Dupilumab for the Treatment of Adult Participants With Chronic Pruritus of Unknown Origin (CPUO) (LIBERTY-CPUO-CHIC)

NCT05263206 · Status: RECRUITING · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 284

Last updated 2026-04-09

No results posted yet for this study

Summary

The main objective of the study is to assess efficacy and safety of dupilumab given up to 24 weeks in adults with CPUO.

This is a master protocol which includes 2 parallel-treatment, double-blind, 2- arm Phase 3 staggered studies of similar design (Study A and Study B) in male and female participants aged 18 to 90 years with CPUO. Study B design was to be adapted based on the results of Study A.

For both Study A and B, after an up-to-4-week screening period, participants with severe pruritus (worst-itch numerical rating scale \[WI-NRS ≥7) will enter a 4-week run-in period and will be treated with a non-sedative antihistamine and an emollient (moisturizer). Participants with severe pruritus (WI-NRS ≥7) at baseline will be randomized (1:1) to be treated for 24 weeks with either dupilumab or matching placebo in addition to their non-sedative antihistamine and emollient regimen. The treatment period for both study A and B will be followed by a 12-week follow-up period.

Conditions

Interventions

DRUG

Dupilumab

Injection solution subcutaneous

DRUG

Placebo

Injection solution SC

DRUG

Fexofenadine (loratadine if not available)

Tablet or capsule Oral

Sponsors & Collaborators

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
90 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2022-02-15
Primary Completion
2027-06-02
Completion
2027-08-25
FDA Drug
Yes

Countries

  • United States
  • Argentina
  • Canada
  • China
  • France
  • Germany
  • Hungary
  • Italy
  • Japan
  • Poland
  • South Korea
  • Spain
  • Taiwan

Study Locations

More Related Trials

Entities

Drugs
Diseases
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05263206 on ClinicalTrials.gov