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Sample Collections From the Airways of Asthmatic Patients

StatusCompleted
PhaseNot specified
Started
View on ClinicalTrials.gov ↗

Amendment history

The 50 most recent of 367 record versions are accounted for below. See every version on ClinicalTrials.gov ↗

  1. Minor

    27 amendments

    27 re-verifications since 2025-10-04, no change to tracked fields

    v341-v367

  2. Minor

    Trial status: Recruiting to Completed

    Enrollment target: estimated 2000 to confirmed 574; Site details revised

    Study Status, Study Design, Eligibility, Contacts/Locations, Referencesv340

  3. Minor

    22 amendments

    22 re-verifications since 2024-09-26, no change to tracked fields

    v318-v339

  • Stopped: an ongoing trial was terminated, suspended or withdrawn.
  • Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
  • Minor: routine progress and housekeeping, such as sites added or enrollment closed.
Fiberoptic bronchoscopy is a procedure which involves passing a pencil-thin tube into the lung in order to collect fluid and cells from the airways. Fiberoptic bronchoscopy can collect cells from the walls of airways by gently brushing them (bronchial brushing). In addition, squirting small amounts of sterile water in to the airway and gently suctioning it back into the bronchoscope (bronchoalveolar lavage) collects cells. In this study, researchers plan to perform these tests on patients with asthma and normal volunteers. This research may help to improve the understanding of the processes involved in airway inflammation and asthma.
Trial Details
NCT Number NCT00001888
Lead Sponsor National Heart, Lung, and Blood Institute (NHLBI)
Conditions Asthma
Enrollment 574 participants
Start Date
Updated on ClinicalTrials.gov