The Asthma Research Landscape in the United States
The United States remains one of the most active countries for respiratory research. At any given time, hundreds of asthma studies are recruiting participants through academic medical centers, community hospitals, and private research clinics. The National Institutes of Health runs dedicated asthma protocols at its Clinical Center in Bethesda, Maryland, while organizations like the American Lung Association operate a network of Airways Clinical Research Centers spanning from Duke University in North Carolina to the University of Arizona in Tucson.
What is driving this wave of research? For one, asthma remains stubbornly common. It affects roughly 25 million Americans, and for a subset of those patients, standard inhalers and oral medications simply do not bring adequate control. The recent approval of Breztri Aerosphere as the first triple-combination therapy delivered in a single inhaler for asthma patients aged 12 and older shows how clinical trials directly translate into new options at the pharmacy. That approval, announced in April 2026, grew out of the KALOS and LOGOS Phase III trials, which enrolled patients across multiple US sites.
The types of trials recruiting right now are remarkably varied. Some, like the SOLAIRIA-2 study sponsored by Generate Biomedicines, are investigating a new biologic administered every six months for severe uncontrolled asthma. Others, such as Eli Lilly's RENEW-Asthma trial, are testing an oral medication called brenipatide in people with moderate-to-severe disease. There are also studies focused on children, digital health apps, and strategies to safely reduce daily maintenance medications.
How Trials Actually Work
The process of joining a clinical trial follows a fairly predictable path, though the specifics vary by study. The first step is always screening. This involves a phone call or online questionnaire to check basic eligibility, followed by an in-person visit where the research team explains the study in detail. You will review and sign an informed consent document, which is meant to be a conversation, not just paperwork. The team will run tests, which typically include lung function measurements, blood draws, and sometimes allergy skin testing.
If you qualify, you enter the treatment phase. Depending on the study design, you might receive the investigational drug, a placebo, or a standard treatment. Many asthma trials are randomized and double-blind, meaning neither you nor the research team knows which group you are in. This is how researchers determine whether a new therapy actually works better than what is already available. Visits can range from weekly check-ins to appointments spaced months apart, and some studies now incorporate at-home monitoring with digital peak flow meters and symptom diaries.
The follow-up period comes after the active treatment phase ends. Researchers continue collecting data on how you are doing, sometimes for months or even a year after your last dose. This is how they learn about long-term safety and durability of response.
Elaine, a patient in her sixties who has lived with brittle asthma for over three decades, described her trial experience this way: "Taking part in this trial has made me able to get to the end of the street now, where I wasn't able to walk very far. I don't get out of breath as quick." She also emphasized the support she received: "The whole team, the doctors and nurses, are very helpful. You can always ask them any questions at any time."
What Participation Costs and What It Pays
One of the most common misconceptions is that clinical trials are expensive for participants. In the United States, study-related treatment, medical tests, and doctor visits are provided at no cost to the participant. The trial sponsor, whether a pharmaceutical company or a government agency like the NIH, covers these expenses. Routine care that you would need regardless of the study, such as your regular maintenance inhaler, typically remains your responsibility through your usual insurance.
Many trials also offer compensation for time and travel. The amounts vary widely depending on the study's length, the number of visits required, and the procedures involved. A screening visit for an asthma study at UVA Health, for example, offers up to $125 for completing the screening process. Longer-term studies may provide compensation structured around each completed visit. A pediatric asthma study at Boston Children's Hospital offered total possible compensation in gift cards of $2,560 across four years of participation, along with covered parking and transportation costs.
It is important to note that compensation is intended to offset inconvenience, not to serve as income. The IRS generally considers clinical trial payments as taxable, though many participants do not receive enough in a single year for it to be a practical concern.
Comparing Asthma Trial Types
Every trial is different, and the right one for you depends on your asthma severity, age, and what you are hoping to get out of the experience.
| Trial Type | Example | Typical Duration | Best For | Potential Advantages | Things to Consider |
|---|
| Phase III Biologic | Tezepelumab TAPER study | 52+ weeks | Severe uncontrolled asthma | Access to cutting-edge monoclonal antibodies | Frequent clinic visits; may receive placebo |
| Phase II New Drug | Brenipatide RENEW-Asthma | ~65 weeks | Moderate-to-severe asthma | Oral medication, not injection | Longer commitment; less known about safety |
| Pediatric Study | DOMINICA (benralizumab) | Varies | Children 6-18 with eosinophilic asthma | Specialized pediatric care | Parental involvement required; school absences |
| Digital Health | Asthma self-management apps | 12 months | Mild to moderate asthma | Low burden; can often participate remotely | May not receive the active intervention |
| Screening Protocol | UVA asthma screening | 1-3 visits | Adults with mild allergic asthma | Low commitment; may lead to future studies | No direct treatment benefit |
Each of these categories represents a different kind of experience. A biologic trial might involve monthly injections at a clinic. A digital health study could mean interacting with an app from your living room. Understanding the commitment level before you sign up prevents surprises down the road.
Finding Studies Near You
The most comprehensive resource is ClinicalTrials.gov, a database maintained by the National Library of Medicine. Searching for "asthma" and filtering by "recruiting" and your state will pull up every actively enrolling study in your area. The American Lung Association also maintains a searchable listing of trials at its Airways Clinical Research Centers, which are located in Arizona, Illinois, New York, North Carolina, and Vermont.
Academic medical centers are another excellent starting point. Institutions like Vanderbilt Asthma, Sinus and Allergy Program in Nashville, Icahn School of Medicine at Mount Sinai in New York, and Northwestern Airways Disease Center in Chicago frequently run multiple asthma studies simultaneously. Even if one trial does not fit your situation, the research coordinator may know of another that does.
Primary care physicians and pulmonologists can also be valuable guides. Some practices have relationships with nearby research centers and can make direct referrals. Others may simply not be aware of what is available, so bringing a list of trials you have found yourself can be helpful.
The Risks Worth Weighing
No honest discussion of clinical trials skips the risks. Investigational treatments may not work. They may cause side effects that range from mild to serious. The placebo possibility means you could spend months in a study without receiving the active drug. There is also the practical burden: time away from work, travel to a research site, and the emotional weight of uncertainty.
Informed consent is designed to address these concerns before you commit. The research team is required to walk you through every known risk, every procedure, and your right to withdraw at any time without penalty. You are not locked into a trial once you start. Walking away at any point, for any reason, is your right and will not affect your regular medical care.
The flip side is access. For people with severe or uncontrolled asthma who have cycled through available treatments without relief, a trial can be a doorway to therapies that are years away from FDA approval. The monitoring in a clinical trial is often more intensive than standard care. Participants in a study like the TRIM trial at the American Lung Association centers receive regular breathing tests, blood work, and close attention from specialists who understand their condition deeply.
Maria from Phoenix ended up enrolling in the trial her pulmonologist mentioned. It meant driving 45 minutes to the research site every month for an injection. She did not know until the study ended that she had been receiving the active biologic, not the placebo. Her asthma exacerbations dropped from three per year to none during the 52-week treatment period. She is now continuing on the medication through an open-label extension, while the data from her participation, along with hundreds of other patients, moves the drug closer to the broader market.
Where to Start
If you are considering a clinical trial, begin with a candid conversation with the doctor who manages your asthma. Ask whether research might be appropriate for your situation. Then browse ClinicalTrials.gov or the American Lung Association's research listings. When you find a study that interests you, call or email the contact listed. Research coordinators expect these calls. They will walk you through the screening questions and tell you honestly whether you might qualify.
Bring a list of questions to your first visit: How often will I need to come in? What happens if my asthma worsens during the study? Will I find out which treatment I received when the trial ends? Can I continue the medication if it helps me? The answers to these questions will tell you a lot about whether the study is right for you.
研究の知恵