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HFA-152A propellant

Phase 1

Asthma | Small molecule | Respiratory |GSK plc|Last Updated: Aug 21, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLED
Total Trials1
Total Enrollment20

FDA Designations

No designations recorded

Clinical trial landscape

HFA-152A propellant · 1 trial · 1 indication

Phase 1 1
NCT06702462A Study to Assess the Potential for Airway Sensitivity Reactions With Propellants HFA-152a (Test) and HFA-134a (Reference) Administered Via Pressurized Inhalers in Adults With Mild AsthmaAsthma
COMPLETED20 Analytics
PHASE1COMPLETED
A Study to Assess the Potential for Airway Sensitivity Reactions With Propellants HFA-152a (Test) and HFA-134a (Reference) Administered Via Pressurized Inhalers in Adults With Mild Asthma
AsthmaUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage Change From Baseline in Forced Expiratory Volume in 1 Second (FEV1) at 15 Minutes Post-dose
Baseline (Day 1, pre-dose) and at 15 minutes post-dose

FEV1 is defined as the volume of air that can be forced out in one second, after taking a deep breath and measured using spirometry. Baseline is defined as the latest pre-dose assessment with a non-missing value including those from unscheduled visits.

Secondary Endpoints

Area Under the Curve for FEV1 From Time Zero to 15 Minutes (FEV1 AUC0-15 Mins)
Up to 15 minutes post-dose
Percentage Change From Baseline in FEV1 at 5, 60, and 180 Minutes Post-dose
Baseline (Day 1, pre-dose) and at 5, 60, and 180 minutes post-dose
Number of Participants With Percentage Change From Baseline in FEV1 <-15% at Timepoints 5, 15, 60 and 180 Minutes Post-dose
Baseline (Day 1, pre-dose) and at 5, 15, 60 and 180 minutes post-dose
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelCROSSOVER
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
HFA-152A propellant followed by HFA-134A propellantEXPERIMENTAL -
HFA-134A propellant followed by HFA-152A propellantEXPERIMENTAL -

Interventions

NameTypeDescription
HFA-152A propellantDRUGHFA-152A propellant is administered via oral inhalation
HFA-134A propellantDRUGHFA-134A propellant is administered via oral inhalation
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Eligibility Criteria

Age Range18 Years to 45 Years
SexALL
Healthy VolunteersNo
Study Sites3

Inclusion Criteria: Participants are eligible to be included in the study if all the following criteria apply: * Male or female; females may be of childbearing potential, of nonchildbearing potential, or postmenopausal. * Participant must be 18 to 45 years of age inclusive, at the time of screenin...

Countries:United States
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Frequently asked questions about HFA-152A propellant

What is HFA-152a propellant used for?

HFA-152a propellant is an investigational small molecule being studied for use in asthma. It is a propellant intended for pressurized inhalers, and a clinical trial has assessed its potential for airway sensitivity reactions in adults with mild asthma.

What does HFA-152a propellant target?

HFA-152a propellant does not target a specific molecular target. It is a propellant, a substance used to deliver medication from a pressurized inhaler. Its role is to serve as a carrier for asthma medications, rather than to interact with a biological target.

Who makes HFA-152a propellant?

HFA-152a propellant is being developed by GSK plc, a biopharma company traded on the New York Stock Exchange under the ticker GSK. GSK is conducting clinical research on this propellant for use in pressurized inhalers for asthma.

What phase is HFA-152a propellant in?

HFA-152a propellant is in Phase 1 clinical development. It is an investigational product and has not been approved by regulatory authorities. A Phase 1 trial has been completed to assess its safety and tolerability in adults with mild asthma.

What clinical trials is HFA-152a propellant in?

HFA-152a propellant has one completed clinical trial, NCT06702462, titled "A Study to Assess the Potential for Airway Sensitivity Reactions With Propellants HFA-152a (Test) and HFA-134a (Reference) Administered Via Pressurized Inhalers in Adults With Mild Asthma." This Phase 1 trial enrolled 20 participants in the United States.

Is HFA-152a propellant the same as HFA-134a?

No, HFA-152a propellant is not the same as HFA-134a. In clinical trial NCT06702462, HFA-152a is the test propellant and HFA-134a is the reference propellant. The study compares the two to assess the potential for airway sensitivity reactions in adults with mild asthma.