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Clinical Trial ● Currently Recruiting Phase I NCT06433921

A Study to Compare the Relative Potency of Salbutamol Administered Via Metered Dose Inhalers (MDI) Containing Propellants HFA-152a to HFA-134a in Mild Asthmatics Aged 18 to 65 Inclusive

A Study to Compare the Relative Potency of Salbutamol Administered Via Metered Dose Inhalers (MDI) Containing Propellants HFA-152a to HFA-134a in Mild Asthmatics Aged 18 to 65 Inclusive…

📅 24 Jun 2026 ⏱ 2 min read
Currently Recruiting
This trial is actively seeking participants in the UK. Discuss eligibility with your patient before referring.
Status
Currently Recruiting
Phase
Phase I
NCT ID
NCT06433921
Sponsor
GlaxoSmithKline
Start
2024-08-14
ClinicaliQ Trial Snapshot
  • A Study to Compare the Relative Potency of Salbutamol Administered Via Metered Dose Inhalers (MDI) Containing Propellants HFA-152a to HFA-134a in Mild Asthmatics Aged 18 to 65 Inclusive — Recruiting • Phase I • Respiratory / COPD / Asthma • NCT06433921.
  • What is being tested: The study compares the effectiveness and potency of salbutamol (albuterol) delivered via metered dose inhalers using two different propellant systems—HFA-152a (newer) versus HFA-134a (established)—by measuring airway responsiveness using methacholine challenge testing in mild asthmatic patients.
  • Patient eligibility: The trial includes adults aged 18-65 years with mild asthma, establishing a defined population for evaluating propellant formulation differences in a clinically relevant but controlled patient group.
Use This Page For
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  • Checking recruitment status, phase and sponsor at a glance.
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What This Trial Is Studying

The primary objectives of the study are: Part 1: to characterize the potency and variability of dose response on efficacy (Provocative concentration of methacholine causing at least a 20% fall in forced expiratory volume (FEV1) [PC20]) of salbutamol administered via MDI with salbutamol HFA-134a or salbutamol HFA-152a in participants with mild asthma. Part 2: to compare the comparative dose response on efficacy (PC20) of salbutamol when administered via MDI with salbutamol HFA-134a or salbutamol HFA-152a in participants with mild asthma.

Eligibility Snapshot
  • : 1. Male or female; females may be of childbearing potential, of nonchildbearing potential, or postmenopausal.
  • Participant must be 18 to 65 years of age inclusive, at the time of screening. 3. ≥50 kg, at the time of screening. 4. Body mass index (BMI) with 19.0-35.0 kg/m2 inclusive, at the time of screening. 4. Documented history of asthma ≥ 6 months. 5. Receiving 1 of following asthma treatments, at a stable dose, for at least 12 weeks prior to the screening visit and is anticipated to remain stable for the duration of the study: i. Short-acting beta-agonist (SABA) only. ii. Daily maintenance low-dose inhaled corticosteroids (ICS) (defined as 100-250 μg/day fluticasone propionate or equivalent plus or minus SABA which is anticipated to remain stable for the duration of the study. iii. Daily maintenance low-dose ICS + Long-acting beta-2 agonist (LABA) therapy (low-dose ICS defined as 100-250 μg/day fluticasone propionate or equivalent as defined by GINA [GINA, 2023]) plus or minus SABA, which is anticipated to remain stable for the duration of the study. 6. No severe asthma exacerbations within 6 months prior to screening and ≤1 severe exacerbation during the 12 months prior to screening. 7. Pre-bronchodilator FEV1…

Use the source registry for the full inclusion and exclusion criteria before discussing referral or enrolment.

Full Trial Details
View this trial on the source registry
Eligibility criteria, protocol, and results when available
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