Phase 1 Asthma Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
- You are male or female, aged 18 to 65 years old at the time of screening.
- You weigh at least 50 kg (about 110 lbs) at the time of screening.
- Your Body Mass Index (BMI) — a measure of body weight relative to height — is between 19.0 and 35.0 at the time of screening.
- You have a documented history of asthma for at least 6 months.
- You have been on one of the following stable asthma treatments for at least 12 weeks before screening: a short-acting reliever inhaler only; a low-dose daily steroid inhaler (with or without a reliever inhaler); or a low-dose daily steroid inhaler combined with a long-acting reliever inhaler (with or without a short-acting reliever inhaler).
- You have not had a severe asthma attack in the past 6 months, and no more than one severe attack in the past 12 months.
- Your lung function test (a breathing test called FEV1) shows your lungs are working at 80% or more of what is expected for someone your age and size.
- You show a certain level of airway sensitivity during a specific breathing challenge test using a substance called methacholine (confirm with trial site).
- You are able to stop using your short-acting reliever inhaler for at least 12 hours, and your long-acting inhaler for at least 48 hours, before certain study visits.
- If you are a woman, you are not pregnant or breastfeeding, and either cannot become pregnant or are using a highly effective method of contraception.
- You are willing and able to sign a consent form agreeing to the study's requirements.
- You are a non-smoker and have not used any tobacco products in the past 12 months, and have smoked fewer than 10 pack-years total in your lifetime (confirm with trial site).
Who may not be able to join:
- You have a history of life-threatening asthma, or your asthma is currently considered unstable by a doctor.
- You have a history of other lung or breathing conditions, such as chronic bronchitis, emphysema, cystic fibrosis, pulmonary fibrosis, tuberculosis, or similar conditions.
- You have asymptomatic gallstones (gallstones that are not causing symptoms).
- You have a current or past history of blood, nerve, psychiatric, or other health conditions that a doctor feels could put you at risk during the study.
- You have had recent eye surgery, or have any condition where forceful breathing out could be harmful to you (confirm with trial site).
- You are currently taking a type of medication called a cholinesterase inhibitor (for example, a medication used to treat a condition called myasthenia gravis).
- You have taken part in more than 4 experimental drug studies in the past 12 months, or have been in another clinical trial within the past 30 days (or longer, depending on the study drug used).
- You currently work night shifts, or have worked night shifts in the past 15 days.
- You regularly drink more than 21 units of alcohol per week (if male) or more than 14 units per week (if female) within the past 6 months.
- You test positive for recreational drugs (including cannabis/THC) at screening.
- You have smoked cigarettes, cigars, pipes, or used any vaping or nicotine products within the past 12 months.
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
Contact this trial
Phone: 877-379-3718
Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
Part 1 & Part 2: Provocative concentration of methacholine causing at least a 20% fall in FEV1 (PC20)
Can't join this trial?
Data last synced from ClinicalTrials.gov: 20 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.