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HFA MDI

Phase 3

Asthma | Small molecule | Respiratory |AstraZeneca PLC|Last Updated: Feb 6, 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-BlindACTIVE_CONTROLLEDBiomarker
Total Trials1
Total Enrollment52
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05850494Study to Assess Bronchospasm Potentially Induced by Next-Generation Propellant vs HFA Propellant in an MDI in Participants With Well/Partially Controlled AsthmaPHASE3 COMPLETED 52May 2, 2023Aug 21, 2023Feb 6, 20264 United States
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Study Endpoints
Primary Endpoints
Change From Baseline in Normalized Forced Expiratory Volume in 1 Second (FEV1) Area Under the Curve From 0 to 15 Minutes (AUC0-15 Min) Post-dose
30 minutes prior to dosing and at 5, 15, and 30 minutes post-dose

The change from baseline (30 minutes pre-dose) in normalized FEV1 AUC0-15 min postdose induced by Treatment HFO was compared with Treatment HFA.

Secondary Endpoints
Number of Participants With Bronchospasm Events
30 minutes prior to dosing and at 5 and 15 minutes post-dose
Safety and Tolerability Evaluated in Terms of Adverse Events (AEs)
From screening (Day - 14) to the last dose (day 8) + 7 days
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelCROSSOVER
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Treatment A: HFO propellant only MDIEXPERIMENTALTest arm, 4 inhalations per dose
Treatment B: HFA propellant only MDIACTIVE_COMPARATORReference arm, 4 inhalations per dose
Interventions
NameTypeDescription
HFA MDIDRUG* Dose formulation: MDI * Unit dose strength(s): Reference (propellant only) * Dosage Level: 4 inhalations, single dose * Route of administration: Oral inhalation * Participants will receive treatment A in 1 or 2 possible sequences AB or BA
HFO MDIDRUG* Dose formulation: MDI * Unit dose strength(s): Experimental (propellant only) * Dosage Level: 4 inhalations, single dose * Route of administration: Oral inhalation * Participants will receive treatment A in 1 or 2 possible sequences AB or BA
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Eligibility Criteria
Age Range18 Years — 45 Years
SexALL
Healthy VolunteersNo
Study Sites4

Inclusion Criteria: * Age 1. Male and female participant must be 18 to 45 years of age inclusive, at the time of signing the informed consent form (ICF). Type of Participant and Disease Characteristics 2. Participants who have a documented history of physician-diagnosed asthma ≥ 12...

Countries:United States
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