A Study of KT-621 Administered Orally to Adult Participants With Moderate to Severe Eosinophilic Asthma
Eligible age
18–75 yrs
Accepts
All genders
Locations
12 states
Healthy volunteers
No
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About this study
This Phase 2b study is designed to evaluate the safety and efficacy of KT-621 in participants with uncontrolled moderate to severe eosinophilic asthma. The main goals of this study are to investigate how effective KT-621 is at treating uncontrolled moderate to severe eosinophilic asthma, the safety and tolerability of KT-621, and how KT-621 behaves in the body.
Sponsor: Kymera Therapeutics, Inc.
You may qualify if…
- ✓ Must be 18 years old (or the legal age of consent in the jurisdiction in which the study is taking place) to 75 years of age, inclusive, at the time of signing the ICF.
- ✓ Must have a physician diagnosis of asthma for at least 1 year prior to the Screening visit.
- ✓ Must be on a stable regimen of medium- to high- dose inhaled corticosteroid (ICS), in combination with a long-acting β2-agonist (LABA). The regimen may include additional controller medications used for at least 12 weeks, at a stable dose and regimen, with no change in the dose or frequency of administration for at least 4 weeks prior to the Screening visit and between the Screening and Baseline visits.
- ✓ Must have a pre-bronchodilator FEV1 40 to 80% of predicted normal at the Screening and Baseline visits, prior to randomization.
- ✓ Must have an ACQ-5 score ≥ 1.5 at the Screening and Baseline visits, prior to randomization.
- ✓ Must have a FeNO level of ≥ 25 ppb at the Screening and Baseline visits.
- ✓ Must have a demonstrated evidence of reversible airway obstruction by post-bronchodilator (albuterol/salbutamol) reversibility of FEV1 ≥12% and ≥200 mL at Screening.
- ✓ Must have an absolute blood eosinophil count must be ≥ 0.30 × 10\^9/L at Screening.
You may not qualify if…
- ✕ Must not have any clinically significant pulmonary disease other than asthma.
- ✕ Must not have had an asthma exacerbation, requiring either treatment with systemic corticosteroids (intramuscular, intravenous, or oral) and/or hospitalization or an emergency/urgent medical care visit for acute asthma worsening, at any time from 4 weeks prior to the Screening visit up to and including the Baseline visit.
- ✕ Must not have any other clinically significant disease, condition, or medical history that, in the opinion of the Investigator, would interfere with participant safety, study evaluations, and/or study procedures.
- ✕ Must not be pregnant or breastfeeding; must not be a woman planning to become pregnant or breastfeed during the study.
- ✕ Must not have results from clinical laboratory safety tests that are outside the local reference range at Screening.
- ✕ Must not have been dosed with any investigational drug or device in a clinical study within 8 weeks or 5 half-lives (whichever is longer) of KT-621 administration.
- ✕ Must not have any known factor, condition, or disease that might interfere with treatment compliance, study conduct or interpretation of the results.
- ✕ Must not be a current smoker of nicotine/tobacco as well as non-nicotine products, have a smoking history of ≥ 10 pack years, or use vaping products, including electronic cigarettes. Former smokers with a smoking history of \< 10 pack years and users of vaping or e-cigarette products must have stopped for at least 26 weeks prior to the Screening visit.
Where it's recruiting
Long Beach · Northridge · Redding · Upland
Loxahatchee Groves · Miami · Tampa
East Point
Iowa City
Chapel Hill
Toledo
Edmond
Clackamas
Pittsburgh
North Charleston · Rock Hill
Chattanooga
Dallas · McKinney
Source: ClinicalTrials.gov · NCT07323654 · last updated 2026-05-18