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T Cell Memory Fuels the Innate Response in Chronic CF Lung Disease
NCT04397861 · View on ClinicalTrials.gov ↗
Study Summary
This study seeks to define the role of CD4+ and CD8+ T cell memory responses in the immunologic failure of patients with cystic fibrosis (CF) to clear infections. In a normal host, the immune system clears pathogens upon re-infection more swiftly and efficiently than during an initial infection, in great part due to the recall and effector functions of memory T cells. In CF, far less is understood regarding the response of T cell memory when hosts reencounter antigens, otherwise known as pulmonary exacerbations. Pulmonary exacerbations are pivotal events that lead to a decline in health status among CF patients, with many never recovering to baseline health. CF patients will be recruited from patients followed by the Adult CF Program at National Jewish Health. Following enrollment at the time of antibiotic initiation, blood will be collected at two different time points. The first samples will be collected within 24 hours of starting IV antibiotic therapy. The second blood specimen will be collected at the end of hospitalization, after a minimum of 5 days. At the time of each blood draw, complete blood counts, a sputum sample, and simple spirometry will be measured as part of the standard care of a CF exacerbation. Isolated PBMCs will be stained with antibodies to designate cell surface phenotype. They will then be sorted to identify the T cell population. These cells will be tested on their ability to clear pathogens. The relationship between cellular immune responses and clinical indicators of pulmonary status will be examined by fitting linear mixed models.
Conditions Studied
Study Locations (1)
Colorado
- National Jewish Health — Denver
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 112 participants |
| Start Date | 2015-05-06 |
| Est. Completion | 2021-11-01 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT04397861
The ClinicalTrials.gov registry entry for NCT04397861 describes a study currently listed as completed. It is categorized as an unspecified phase, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 112 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is National Jewish Health, which has 56 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Cystic Fibrosis appearing as the primary indexed condition, and to 0 interventions. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT04397861 reports 1 study location spanning 1 distinct geographic area — top geographies include Colorado. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT04397861 about?
NCT04397861 is a clinical study titled "T Cell Memory Fuels the Innate Response in Chronic CF Lung Disease". This study seeks to define the role of CD4+ and CD8+ T cell memory responses in the immunologic failure of patients with cystic fibrosis (CF) to clear infections. In a normal host, the immune system clears pathogens upon re-infection more swiftly and efficiently than during an initial infection, in ...
What is the current status of trial NCT04397861?
This trial is currently completed. The enrollment target is 112 participants. The study started on 2015-05-06. Estimated completion is 2021-11-01.
What conditions does trial NCT04397861 study?
This clinical trial studies the following conditions: Cystic Fibrosis. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
Who is sponsoring clinical trial NCT04397861?
This trial is sponsored by National Jewish Health, which has 56 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT04397861 being conducted?
This trial has 1 study location across Colorado. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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