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Histoblood Group Antigens as a Risk Factor of Asthma

StatusCompleted
PhaseNot specified
Started
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Record History

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  1. Study completion date: Aug 2013v10
  2. Lead sponsor: National Heart, Lung, and Blood Institute (NHLBI) to University of California, San Franciscov9 Show 6 more changesShow less
    • Trial status: Recruiting to Completed
    • Enrollment target: estimated 300 to confirmed 126
    • Primary completion date: Aug 2011
    • Study completion date: Dec 2009 to not stated
    • Site details revised
    • Collaborators expanded, about 7 words
  3. 2 versions Re-verified since Apr 10, 2009, no change to tracked fieldsv7-v8
  4. Study completion date: Dec 2008 to Dec 2009v6
  5. Enrollment target: 150 to 300
    • Study completion date: Dec 2008
    • Study arms: 0 to 2
    v5
Show 3 earlier versionsHide 3 earlier versions
  1. Re-verified, no change to tracked fieldsv4
  2. Study description revisedv3
  3. Enrollment target: 150v2 Show 5 more changesShow less
    • Study completion date: May 2009 to not stated
    • Interventions: screening (Procedure) to Screening (Procedure)
    • Eligibility criteria expanded, about 63 words
    • Study description expanded, about 20 words
    • Study title expanded, about 3 words
  1. Study First Submitted
  • Stopped: an ongoing trial was terminated, suspended or withdrawn.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.
This study will evaluate the link between blood group antigens and asthma exacerbations.
Trial Details
NCT Number NCT00201266
Lead Sponsor University of California, San Francisco
Collaborators: National Heart, Lung, and Blood Institute (NHLBI)
Conditions
(from sponsor)		 Asthma, Lung Diseases
Related terms Asthma, Lung Diseases
Enrollment 126 participants
Start Date
Primary Completion (estimated)
Study Completion (estimated)
Updated on ClinicalTrials.gov