The Asthma Trial Landscape in the United States
Asthma affects roughly 25 million people across the United States, yet the experience of living with the condition varies dramatically from person to person. Some wrestle with mild symptoms triggered by pollen or exercise; others face severe, uncontrolled episodes that land them in the emergency room multiple times a year. This diversity is precisely why clinical trials are so essential—they help researchers understand which treatments work for which patients, and why.
Across the country, research centers are actively recruiting for studies that span the full spectrum of asthma. The American Lung Association's Airways Clinical Research Centers, for instance, operate at major institutions like Duke University in North Carolina, the University of Arizona in Tucson, Northwestern University in Chicago, the Icahn School of Medicine at Mount Sinai in New York, and the Vermont Lung Center. These sites run trials that range from testing new biologic medications to evaluating behavioral interventions that help patients manage their condition at home.
The types of studies available in 2026 reflect how far asthma research has come. Biologic trials remain a major focus, particularly for people with severe, uncontrolled asthma. These medications—which target specific inflammatory pathways like IL-5, IL-4Rα, or TSLP—are being studied in new combinations and dosing schedules. One notable example is the ongoing research into depemokimab, an ultra-long-acting biologic that could be administered just twice a year, compared to the monthly or bi-monthly injections required by some current treatments. Meanwhile, inhaled medication trials continue to explore new combinations of existing drug classes, and lifestyle intervention studies are examining how weight management, self-monitoring, and environmental adjustments can reduce flare-ups.
What Participating Actually Looks Like
The idea of joining a clinical trial can feel intimidating. But the reality, as described by many past participants, is far more straightforward than most people imagine.
Take the experience of a teenager named Olivia Sutton from Hillsborough, North Carolina. Diagnosed with exercise-induced asthma, Olivia found that playing the piccolo in her school marching band required her to take extra breaths between notes—more than her peers. She joined the GenARA trial through Duke Clinical Research Institute and discovered that the process involved clear communication, regular check-ins, and a research team that treated her like a person, not a data point. "It's not that asthma stops me from doing things," she said, "but sometimes it makes things harder." The trial gave her access to a treatment strategy she would not have encountered otherwise.
For adults with more severe forms of the condition, the experience can be similarly transformative. Elaine, a mother in her 60s who has lived with brittle asthma for over three decades, described her decision to join a trial in simple terms: "This is why I will go on to the trials and try anything, just to make myself better and help other people as well." After participating, she reported being able to walk to the end of her street without losing her breath—something she had not managed in years.
Most asthma trials follow a predictable rhythm. After an initial screening visit—where the research team reviews your medical history, performs breathing tests, and confirms you meet the study's criteria—participants typically attend regular clinic visits that may include lung function tests, blood draws, and questionnaires about symptoms. Some studies also ask participants to keep a daily asthma diary or use a peak flow meter at home. The frequency of visits varies widely depending on the study design, but research coordinators provide a clear timeline before enrollment begins.
Costs, Compensation, and What Is Covered
One of the most common questions people ask is whether participating in a trial will cost them money. In the United States, the study sponsor typically covers all research-related procedures and the investigational medication itself. This means the drug being studied, along with any study-specific lab tests, imaging, and doctor visits, are provided at no charge to the participant.
Many trials also offer compensation for time and travel. The amount varies by study—factors like the number of in-person visits, the length of each appointment, and the distance participants need to travel all play a role. As a general rule, compensation is structured to offset the inconvenience of participation rather than serve as a primary incentive. Some research sites, such as those affiliated with the American Lung Association, explicitly state that compensation is available for in-person visits. Others, like UVA Health's asthma research program, list specific screening compensation amounts on their trial listings.
It is worth noting that routine medical care—things like your regular asthma medications or visits to your primary care doctor—remains your responsibility and typically continues through your existing health insurance. The research team will clarify exactly what the study covers and what falls outside its scope during the informed consent process.
Below is a comparison of the main types of asthma trials currently enrolling in the United States:
| Trial Type | Typical Duration | Ideal For | Key Benefits | Considerations |
|---|
| Biologic medication trials | 6–24 months | Severe, uncontrolled asthma | Access to cutting-edge therapies; close monitoring | Frequent clinic visits; may require injections |
| Inhaled medication trials | 3–12 months | Moderate persistent asthma | Often compares new vs. existing treatments | May involve placebo periods |
| Behavioral/lifestyle studies | 3–6 months | Mild to moderate asthma; interested in non-drug approaches | No medication changes; focuses on self-management | Less direct medical oversight |
| Observational and registry studies | 1–5 years | Any asthma severity | Minimal time commitment; contributes to long-term research | No direct treatment benefit |
Finding a Trial That Fits
The most reliable starting point is ClinicalTrials.gov, a registry maintained by the U.S. National Library of Medicine. The site allows you to search by condition, location, and study phase, and each listing includes eligibility criteria, study design details, and contact information for the research team. New trials are added regularly, so checking back every few months is a sensible habit if nothing matches your situation right away.
The Asthma and Allergy Foundation of America also maintains a searchable database of asthma-related studies, and the American Lung Association's Airways Clinical Research Centers list active trials on their website with direct contact information for each site. For people living near major research hubs—the Research Triangle in North Carolina, the Boston-Cambridge area, the San Francisco Bay Area, or the Texas Medical Center in Houston—opportunities tend to be more abundant, but trials are increasingly opening sites in suburban and rural locations as well.
When you find a study that looks promising, the next step is straightforward: call or email the contact listed on the trial page. You will typically speak with a research coordinator who will ask a few screening questions about your asthma history, current medications, and overall health. This initial conversation is informal and carries no obligation—it is simply a way to determine whether a more detailed screening visit makes sense.
After that, if you appear to be a good fit, you will be invited to a screening appointment at the research site. This visit is more thorough and includes a detailed discussion of the study's risks and potential benefits, a review of the informed consent document, and any baseline tests required by the protocol. You can withdraw at any point in this process, and even after enrolling, you have the right to leave the study at any time without penalty.
Questions Worth Asking Before You Enroll
Walking into a screening visit with a prepared list of questions makes the process far less overwhelming. Here are a few that experienced participants recommend:
What is the time commitment, realistically? Some studies require weekly visits for the first few months, then taper to monthly or quarterly. Others involve just a handful of appointments over the course of a year. Ask the coordinator to walk you through the visit schedule before you agree to anything.
What happens if my symptoms get worse during the trial? Every study has a safety protocol. If your asthma deteriorates, the research team will have a plan—this might mean adjusting your background medications, providing rescue treatment, or, in some cases, withdrawing you from the study. Make sure you understand what that plan looks like.
Will I know which treatment I am receiving? Many trials are randomized and double-blinded, meaning neither you nor the research team knows whether you are receiving the investigational drug or a placebo. Some studies include an open-label extension phase where all participants eventually receive the active treatment. The informed consent document will spell out the study design.
What happens when the trial ends? Some studies offer an extension phase where participants can continue receiving the investigational treatment. Others conclude on a specific date, and participants transition back to standard care. Knowing this in advance helps set realistic expectations.
A Decision That Ripples Beyond Your Own Health
The asthma treatments available today—from inhaled corticosteroids to biologic medications—exist because tens of thousands of people before you volunteered to participate in clinical research. Every trial, whether it leads to a new FDA-approved drug or simply deepens the understanding of asthma biology, depends on the willingness of patients to raise their hands and say, "I'll try."
For those living with uncontrolled symptoms, the personal calculus is often straightforward. Current treatments are not working well enough, and the prospect of accessing a new therapy—combined with the close medical supervision that trials provide—tips the balance. For others, the motivation is quieter: a sense of contributing to something that might help their children, their neighbors, or people they will never meet.
If you are curious about what is available in your area, start with ClinicalTrials.gov or the American Lung Association's research center listings. A brief phone call with a study coordinator can answer questions you did not even know you had.
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