This is a Phase 2a, randomized, double-blind, placebo-controlled, parallel-arm study to evaluate the efficacy and safety of 3 subcutaneous (SC) treatment regimens of CAT-354 in adult subjects with uncontrolled, moderate-to-severe, persistent asthma.
Who can participate
Age range
18 Years – 65 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Male or female subjects
* Age 18 to 65 years at the time of Screening
* Subjects must have a body mass index (BMI) between 18 and 40 kilogram per square meter (kg/m\^2)
* Written informed consent obtained from the subject prior to performing any protocol related procedures, including Screening evaluations
* Physician-diagnosed moderate-to-severe, persistent asthma requiring treatment with appropriate asthma controller medication
* Shows forced expiratory volume in 1 second (FEV1) reversibility postbronchodilator of greater than or equal to (\>=)12 percent and \>=200 milliliter (mL) or have shown such values in a previous test within the last year, or have a positive airway hyperresponsiveness (AHR) test result in the last year
* Pre-bronchodilator FEV 1 value \>=40 percent of individual predicted value at Visits 1 and 3
* Uncontrolled asthma consistent with Expert Panel Report (EPR)-3. In the 2 to 4 weeks preceding Screening, subjects should have a history of 1 or more of the following: Daytime asthma symptoms \>=2 days/week, Nighttime awakening \>=1 night/week, Salbutamol use \>=2 days/week
* An Asthma control questionnaire (ACQ) score \>=1.5 at Visits 1 and 3
* At least 1 occurrence of asthma exacerbation in the past year that required an unscheduled medical encounter
* Men, unless surgically sterile, must likewise practice 2 effective methods of birth control (condom with spermicide) and must use such precautions from Day 1 through Study Day 169
* Ot…
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Change From Baseline in the Mean Asthma Control Questionnaire (ACQ) Score at Day 92