Examining nutrition and body composition in cystic fibrosis patients

Strength and Muscle Related Outcomes for Nutrition and Lung Function in CF

Observational Jaeb Center for Health Research · NCT05639556

This study is trying to see how nutrition and body strength affect adults with cystic fibrosis to help improve their care in the future.

Quick facts

Study typeObservational
Enrollment300 (estimated)
Ages18 Years and up
SexAll
SponsorJaeb Center for Health Research Academic / other
Locations23 sites (Tucson, Arizona and 22 other locations)
Trial IDNCT05639556 on ClinicalTrials.gov

What this trial studies

This study aims to evaluate various markers of body composition, strength, and nutrition in adults with cystic fibrosis (CF) by comparing them to the gold-standard dual energy X-ray absorptiometry (DXA) measurements. It will assess anthropometric measurements, hand-grip strength, and functional tests like the six-minute walk test to understand their relationship with clinical outcomes in CF. Additionally, psychosocial factors and patient-reported outcomes will be included to provide a comprehensive view of nutritional challenges in this population. The findings will establish a baseline for future nutritional interventions and research in CF.

Who should consider this trial

Good fit: Ideal candidates include adults with cystic fibrosis who have a forced expiratory volume (FEV1) of 60% or lower or 60% or greater, matched by age, gender, race, and CFTR genotype severity.

Not a fit: Patients who have undergone solid organ transplantation or have recently started new chronic therapies may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved nutritional strategies and interventions for patients with cystic fibrosis, enhancing their overall health and lung function.

How similar studies have performed: While this approach is comprehensive, similar studies have shown success in evaluating nutritional interventions in cystic fibrosis, indicating potential for meaningful insights.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Cohort 1: Patients are eligible if their percentage of predicated forced expiratory volume in1 second (FEV1) is 60% or lower at screening.
* Cohort 2: Patients are eligible if their percentage of predicted forced expiratory volume in 1 second (FEV1) is 60% or greater at screening.
* Both cohorts match by age, gender, race and CFTR genotype severity.

Exclusion Criteria:

* No prior solid organ transplantation
* No initiation of an investigation drug within 28 days prior to and including Visit 1
* No initiation of new chronic therapy (e.g., ibuprofen, azithromycin, inhaled tobramycin, Cayston, CFTR modulator) within 28 days prior to and including Visit 1.
* No acute use of antibiotics (oral, inhaled or IV) or acute use of systemic corticosteroids for respiratory tract symptoms within 14 days prior to and including Visit 1.
* For the BIA sub-study - Individuals with an implanted pacemaker will be excluded.
* No initiation of a drug for weight loss (such as a GLP-1 receptor agonist) or bariatric surgery within 6-months prior to and including the Baseline visit.
* Patients with continued rapid change or extreme GI symptoms related to weight loss therapy should be excluded at the discretion of the study investigator.

Where this trial is running

Tucson, Arizona and 22 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Cystic Fibrosis
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.