New hope for cystic fibrosis bone disease: denosumab trial launches
NCT ID NCT03921060
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at bone health in people with cystic fibrosis (CF) and tests a drug called denosumab to treat bone disease. Up to 100 participants, including both CF patients and healthy volunteers, will have bone scans and blood tests. A smaller group of 10 CF patients with bone disease will receive denosumab every 6 months for up to 5 years to see if it improves bone density and structure.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Denosumab
- What this could lead to
- If successful, this could point toward a treatment for bone disease in people with cystic fibrosis, improving bone strength and reducing fracture risk.
- What could go wrong
- This is a small sub-study with only 10 patients, so results may not apply to everyone. Denosumab can have side effects like bone or joint pain, and long-term safety is still being studied.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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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Sep 2021
- Expected to finish
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Jul 2027
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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18 to 64 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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.
Cystic Fibrosis Main Study Inclusion Criteria: * Must have CF diagnosis confirmed by sweat test or genotype analysis * Subjects (and parents/legal guardians as applicable) must have the ability to read and write in English Sub-study Exclusion Criteria: * No CF diagnosis * Men or women without osteoporosis * Less than 18 years of age * Unwilling to return annually for study visits for up to 5 years * Unwilling and/or medically unable to take denosumab
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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
1 site. 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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UT Southwestern Medical Center
RECRUITINGDallas, Texas, 75390, United States
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Other studies related to the condition(s) this trial covers.
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- 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
- Triple therapy under the microscope: does it transform cystic fibrosis care?