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HFO-1234ze

Phase 3

Mucociliary Clearance | Small molecule | Respiratory |AstraZeneca PLC|Last Updated: Feb 25, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials1
Total Enrollment35

FDA Designations

No designations recorded

Clinical trial landscape

HFO-1234ze · 1 trial · 1 indication

Phase 3 1
NCT05755932Study to Assess Effect of Next-Generation Propellant MDI on Mucociliary Clearance Vs. HFA Propellant MDI in Healthy ParticipantsMucociliary Clearance
COMPLETED35 Analytics
PHASE3COMPLETED
Study to Assess Effect of Next-Generation Propellant MDI on Mucociliary Clearance Vs. HFA Propellant MDI in Healthy Participants
Mucociliary ClearanceUnlock trial analytics

Study Endpoints

Primary Endpoints

Change from baseline in MCC through 60 minutes following inhalation of 99m technetium-labelled colloid (sulfur or albumin) colloid and gamma camera imaging.
7 days

Change from baseline in MCC through 60 minutes, following inhalation of 99m technetium-labelled colloid (sulfur or albumin) and gamma camera imaging

Secondary Endpoints

Change from baseline in MCC at 3 hours following inhalation of 99m technetium-labelled colloid (sulfur or albumin)and gamma camera imaging
7 days
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelCROSSOVER
PurposeBASIC_SCIENCE

Treatment Arms

ArmTypeDescription
Treatment A: HFO MDIEXPERIMENTALTest arm, 6 inhalations BID for 7 days
Treatment B: HFA MDIACTIVE_COMPARATORReference arm, 6 inhalations BID for 7 days

Interventions

NameTypeDescription
HFO-1234ze(E)DRUG* Dose formulation: metered dose inhaler (MDI) * Unit dose strength(s): Experimental (propellant only) * Dosage level(s): 6 inhalations, BID * Route of administration: Oral inhalation * Participants will receive treatment A in 1 of 2 possible treatment sequences: AB or BA
HFA-134aDRUG* Dose formulation: metered dose inhaler (MDI) * Unit dose strength(s): Reference (propellant only) * Dosage level(s): 6 inhalations, BID * Route of administration: Oral inhalation * Participants will receive treatment B in 1 of 2 possible treatment sequences: AB or BA.
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Eligibility Criteria

Age Range18 Years to 60 Years
SexALL
Healthy VolunteersYes
Study Sites5

Inclusion Criteria: Participants are eligible to be included in the study only if all of the following criteria apply: 1. Capable of giving signed informed consent as described in the protocol which includes compliance with the requirements and restrictions listed in the informed consent form (ICF...

Countries:United StatesUnited Kingdom
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Frequently asked questions about HFO-1234ze

What is HFO-1234ze used for?

HFO-1234ze is an investigational small molecule being developed for mucociliary clearance, a respiratory condition. It is currently in Phase 3 clinical development. The drug is being studied as a next-generation propellant metered-dose inhaler (MDI) to assess its effect on mucociliary clearance compared to an HFA propellant MDI.

Who makes HFO-1234ze?

HFO-1234ze is being developed by AstraZeneca PLC, a biopharmaceutical company listed on the stock exchange under the ticker AZN. The company is conducting clinical trials to evaluate the drug's effect on mucociliary clearance in healthy participants.

What phase is HFO-1234ze in?

HFO-1234ze is in Phase 3 clinical development. It is an investigational drug and has not been approved by regulatory authorities. One Phase 3 trial has been completed, involving 35 participants, to evaluate its effect on mucociliary clearance compared to an HFA propellant MDI.

What clinical trials is HFO-1234ze in?

HFO-1234ze has one completed clinical trial registered under NCT05755932. The study, titled 'Study to Assess Effect of Next-Generation Propellant MDI on Mucociliary Clearance Vs. HFA Propellant MDI in Healthy Participants,' was a Phase 3, randomized, double-blind, active-controlled trial with 35 healthy volunteers in the United States and United Kingdom.

Is HFO-1234ze FDA approved?

HFO-1234ze is not FDA approved. It is an investigational drug currently in Phase 3 clinical development. A completed Phase 3 trial has assessed its effect on mucociliary clearance, but the drug has not yet received regulatory approval for any indication.