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Itepekimab

Phase 3

Chronic Rhinosinusitis With Nasal Polyps | Small molecule | ENT |Sanofi|Last Updated: Jun 2, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials4
Total Enrollment847
FDA Designations
No designations recorded
Clinical Trials (4)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07484230A Phase 3 Study to Assess the Efficacy, Safety, and Tolerability of Itepekimab (Anti-IL-33 mAb) in Adult Japanese Participants With Inadequately-controlled Chronic Rhinosinusitis With Nasal PolypsPHASE3 NOT YET_RECRUITING 20May 8, 2026Oct 10, 2028Mar 20, 2026 -
NCT07424144An Extension Study to Investigate the Long-term Safety and Tolerability of Itepekimab in Adult Participants With Inadequately Controlled Chronic Rhinosinusitis With Nasal PolypsPHASE3 ENROLLING BY_INVITATION 380Mar 12, 2026Dec 12, 2028May 27, 202615 United States, Australia +5
NCT06834347A 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 PolypsPHASE3 ACTIVE NOT_RECRUITING 231Feb 12, 2025Sep 16, 2027May 20, 2026121 United States, Argentina +19
NCT06834360A 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 PolypsPHASE3 ACTIVE NOT_RECRUITING 216Feb 6, 2025Oct 11, 2027Jun 2, 2026111 United States, Argentina +21
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Study Endpoints
Primary Endpoints
Change from baseline in the endoscopic NPS
Baseline to Week 24

The Nasal Polyp Score (NPS) is the sum of the right and left nostril scores, as evaluated by means of nasal endoscopy. Nasal polyp is graded based on polyp size from 0 to 4 with higher scores indicating larger polyps. The sum of right and left nostril scores ranges from 0 (no polyps) to 8 (large polyps).

Incidence of treatment-emergent adverse events (AEs), adverse events of special interest (AESIs), serious adverse events (SAEs), AEs leading to death, and AEs leading to permanent treatment discontinuation
Baseline to EOS (Week 72)

All AEs (serious or nonserious) will be collected from the signing of the ICF until end of study (EOS) visit

Change from baseline in the NCS
Baseline to Week 24

The Nasal Congestion Score (NCS) is scored using a 0-3 categorical scale where 0 = no symptoms, 1 = mild symptoms, 2 = moderate symptoms and 3 = severe symptoms. Outcome value is defined as the preceding 28-day average of morning scores recorded in eDiary.

Secondary Endpoints
Change from baseline in the NCS
Baseline to Week 24
Proportion of NPS responders (defined as participants with improvement by at least 1 points in NPS)
Week 24 and Week 52
Change from baseline in endoscopic NPS
Baseline to Week 52
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Itepekimab high doseEXPERIMENTALSubcutaneous (SC) administration of Itepekimab high dose for 52 weeks
Itepekimab low doseEXPERIMENTALSC administration of Itepekimab low dose for 52 weeks
PlaceboPLACEBO_COMPARATORSC administration of matching placebo for 52 weeks
Interventions
NameTypeDescription
Itepekimab (SAR440340)DRUGPharmaceutical form: Solution for injection in prefilled syringe. Route of administration: Subcutaneous
PlaceboDRUGPharmaceutical form: Solution for injection in prefilled syringe. Route of administration: Subcutaneous
Mometasone furoate nasal spray (MFNS)DRUGPharmaceutical form: Solution for administration via spray pump. Route of administration: Intranasal spray
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo

Inclusion Criteria: * Participants must be 18 years of age or older. * Participants with a history of CRSwNP for at least 1 year. * Participants must have at least one of the following features: * Prior sinonasal surgery for NP. * Worsening symptoms of CRS requiring treatment with SCS within t...

Countries:United StatesAustraliaCanadaChileChinaSouth KoreaUnited KingdomArgentinaAustriaBrazilFinlandGermanyHungaryIsraelItalyJapanMexicoNetherlandsPolandPortugalSpainSwedenTurkey (Türkiye)BelgiumCzechiaDenmarkFranceRomania
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Recent Changes (Last 90 Days)
MEDIUMJun 2, 2026NCT06834360Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMJun 2, 2026NCT06834360Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMJun 2, 2026NCT06834360Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWMay 28, 2026NCT07424144lastUpdatePostDate: changed
LOWMay 28, 2026NCT07424144lastUpdatePostDate: changed
LOWMay 26, 2026NCT06834360primaryCompletionDate: changed
LOWMay 26, 2026NCT07484230primaryCompletionDate: changed
LOWMay 26, 2026NCT07424144primaryCompletionDate: changed
MEDIUMMay 26, 2026NCT06834347Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWMay 24, 2026NCT06834360studyFirstPostDate: changed
LOWMay 24, 2026NCT06834347studyFirstPostDate: changed
LOWMay 24, 2026NCT07484230studyFirstPostDate: changed
LOWMay 24, 2026NCT07424144studyFirstPostDate: changed