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Atuliflapon

Phase 2

Asthma | Small molecule | Respiratory |AstraZeneca PLC|Last Updated: Jan 14, 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_CONTROLLEDBiomarker
Total Trials1
Total Enrollment670
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05251259Study to Assess the Efficacy and Safety of Atuliflapon in Moderate-to-Severe Uncontrolled AsthmaPHASE2 COMPLETED 670Jan 27, 2022Jan 7, 2026Jan 14, 2026234 United States, Argentina +18
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Study Endpoints
Primary Endpoints
Time to first CompEx Asthma event
Baseline up to Week 12

The clinical efficacy of Atuliflapon Dose A will be assessed by calculating a Hazard Ratio between the treatment arms, Atuliflapon Dose A vs. placebo, in a selected population (based on biomarker level). CompEx Asthma, a novel composite endpoint for exacerbations, captures asthma-worsening episodes based on a combination of diary events (worsening in daily peak expiratory flow (PEF), asthma symptoms and reliever medication use) plus severe asthma exacerbation events.

Secondary Endpoints
Time to first CompEx Asthma event (Composite endpoint for Exacerbations)
From Baseline up to Week 12
Change from baseline in Pre-bronchodilator in forced expiratory volume in 1 second (FEV1)
From Baseline up to Week 2, Week 4 and Week 12
Change from baseline in St. George's Respiratory Questionnaire
From Baseline up to Week 4 and Week 12
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Lead-in PK cohort (Atuliflapon)EXPERIMENTALRandomised participants will receive Atuliflapon in Lead-in PK period of the study.
Lead-in PK cohort (Placebo)PLACEBO_COMPARATORRandomised participants will receive matching placebo to Atuliflapon in Lead-in PK cohort of the study.
Part 1 (Atuliflapon)EXPERIMENTALRandomised participants will receive Atuliflapon in Part 1 of the study.
Part 1 (Placebo)PLACEBO_COMPARATORRandomised participants will receive matching placebo to Atuliflapon in Part 1 of the study.
Interventions
NameTypeDescription
AtuliflaponDRUGRandomised participants will receive Atuliflapon
PlaceboDRUGRandomised participants will receive matching placebo to Atuliflapon.
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Eligibility Criteria
Age Range18 Years — 80 Years
SexALL
Healthy VolunteersNo
Study Sites234

Inclusion Criteria Lead-in PK Cohort: * 18 to 55 years of age inclusive at the time of signing the informed consent at screening Visit 1. * Bodyweight 50 to 120 kg (inclusive) and BMI 18 to 32 kg/m\^2 (inclusive) at screening Visit 1. * Documented asthma diagnosis ≥12 months prior to screening Vis...

Countries:United StatesArgentinaAustraliaBulgariaChileCroatiaGermanyHungaryJapanNetherlandsPolandRomaniaSerbiaSlovakiaSouth AfricaSouth KoreaSpainTurkey (Türkiye)UkraineUnited Kingdom
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