Can we predict which kids will benefit from CF drugs?
NCT ID NCT07148739
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how new cystic fibrosis drugs work in children ages 2 and older. Researchers want to find genetic clues that can tell us ahead of time who will respond well, so kids don't get unnecessary side effects or high costs from treatments that won't help them. About 100 participants will have their drug levels checked and answer questionnaires about their mental health.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2025
- Expected to finish
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Dec 2030
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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3 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * documentation of CF diagnosis per CFF diagnostic criteria and known CFTR genotype * age 2 years and older * ability to provide written informed consent and/or assent (by subject and/or legal guardian) * on a stable dose of triple combination CFTR modulator therapy for at least two weeks prior to Visit 1 * clinically stable lung disease, defined as no documented acute decrease in FEV1 \> 10%, OR use of additional antibiotics (intravenous \[IV\] or oral \[PO\]) within 4 weeks prior to screening Exclusion Criteria: * recent significant unintentional weight loss, as determined by the investigator, in the 4 weeks prior to screening * pregnant or breastfeeding female * history of alcohol or substance abuse in the 6 months prior to screening * participation in a study involving an investigational intervention within 28 days (or 5 half-lives, whichever is longer) prior to screening * in the opinion of the Investigator, medical or psychiatric illness, or other conditions that would interfere with participation
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
3 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Arkansas Children's Hospital
RECRUITINGLittle Rock, Arkansas, 72205, United States
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The University of Alabama at Birmingham
RECRUITINGBirmingham, Alabama, 35233, United States
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University of Washington
RECRUITINGSeattle, Washington, 98195, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a simple questionnaire reveal why some cystic fibrosis patients skip physiotherapy?
- Glucose sensor may flag diabetes risk in cystic fibrosis
- Cystic fibrosis diabetes: do gut hormones and genes hold the key?
- Can a special lung scan catch cystic fibrosis damage earlier than standard tests?
- Can a pill replace the liquid? testing a new form of cystic fibrosis drug