Oral Docosahexanoic Acid Supplementation in Cystic Fibrosis

Status Completed

Clinical Trial Summary

Oral supplementation of patients affected by cystic fibrosis with docosahexanoic acid (DHA) will result in normalization of the known fatty acid derangements in these patients and will diminish the production of proinflammatory isoprostanes such as 8-isoprostane-PGF2α.

Clinical Trial Description

The study design will be a single-center, randomized, placebo-controlled, cross-over trial. After informed consent has been obtained, 18 eligible subjects with pancreatic insufficient cystic fibrosis will be enrolled in the study. Participants will take part in two 4 week study sessions, each separated by a 4 week washout period. One session will involve treatment with placebo and the other two sessions will provide treatment with approximately 25mg and 35 mg of DHA/kg of body weight. The patients will be assigned to each of the treatment sessions in random order, as described above. The DHA source will be provided by Martek Biosciences Corporation, Columbia, MD, USA in the form of a chewable capsule containing 200 mg of DHA. The placebos will be identical to the DHA supplement but will not contain the active ingredient, DHA. Subjects will be instructed to take the study capsules in addition to their normal doses of pancreatic enzymes with meals and to maintain their usual diets. Blood, urine, and exhaled breath condensate samples will be collected at baseline and after completion of each of the study periods. Patients will be screened and enrolled when they present to clinic for their routine check-up. The subjects have routine blood work at their annual check-ups, and when possible will have an additional tube of blood saved for the baseline fatty acid profiles so as to avoid unnecessary blood draws. Following each study period, blood draw, urine collection, and exhaled breath condensate (EBC) will be collected at the Vanderbilt Clinical Research Center. The patients will also be given the supply of DHA and placebo (for the entire study) at time of enrollment. The order in which they take the supplement or the placebo will be determined using a randomization table. ;

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00924547
Study type	Interventional
Source	Vanderbilt University
Contact
Status	Completed
Phase	Phase 2
Start date	November 2013
Completion date	July 2015

View Details

See also
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.