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A Phase 3 Study to Assess the Efficacy, Safety, and Tolerability of Itepekimab (Anti-IL-33 mAb) in Participants With Inadequately-controlled Chronic Rhinosinusitis With Nasal Polyps

NCT06834360 · Status: RECRUITING · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 210

Last updated 2026-05-20

No results posted yet for this study

Summary

EFC18419 is a multinational, randomized, double-blind, placebo-controlled, parallel-group, Phase 3 study with 3 treatment groups. The purpose of the study is to evaluate the efficacy, safety and tolerability of 2 dosing regimens of itepekimab compared to placebo as add-on therapy to intranasal corticosteroids (INCS) in male and female participants with chronic rhinosinusitis with nasal polyps (CRSwNP) aged 18 years of age and older.

Study details include:

* The study duration per participant (4-week screening, 52-week treatment, 20-week safety follow-up) will be up to 76 weeks. For participants transitioning to the LTS18420 study, the study duration will be 56 weeks.
* The treatment duration will be up to 52 weeks.
* The number of visits will be 9 site visits and 20 phone/home visits.

Conditions

Interventions

DRUG

Itepekimab (SAR440340)

Pharmaceutical form: Solution for injection in prefilled syringe. Route of administration: Subcutaneous

DRUG

Placebo

Pharmaceutical form: Solution for injection in prefilled syringe. Route of administration: Subcutaneous

DRUG

Mometasone furoate nasal spray (MFNS)

Pharmaceutical form: Solution for administration via spray pump. Route of administration: Intranasal spray

Sponsors & Collaborators

Principal Investigators

  • Clinical Sciences & Operations · Sanofi

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-02-06
Primary Completion
2027-01-08
Completion
2027-12-13
FDA Drug
Yes

Countries

  • United States
  • Argentina
  • Australia
  • Belgium
  • Brazil
  • Canada
  • Chile
  • China
  • Czechia
  • Denmark
  • France
  • Germany
  • Hungary
  • Israel
  • Italy
  • Japan
  • Mexico
  • Netherlands
  • Poland
  • Romania
  • Spain
  • Turkey (Türkiye)
  • United Kingdom

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 NCT06834360 on ClinicalTrials.gov