Investigation of the B- and T-cell Repertoire and Immune Response in Patients With Acute and Resolved COVID-19 Infection
Public ClinicalTrials.gov record NCT04362865. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: People who get infected with COVID-19 have an unpredictable risk to worsen and die. This makes it hard to decide who can quarantine at home and who should be treated at a hospital. Researchers think the risk may be related to how a person s B and T cells respond to the virus. B and T cells are the major components of a person s immune response. B and T cells responding to the virus with a favorable pattern may lead to recovery, and this favorable pattern may be helpful to establish. If people in a vaccine trial get this same favorable pattern when responding to a vaccine, this may be a useful early signal that the vaccine will be successful. Objective: To examine how immune cells respond to COVID-19 infection. Eligibility: Adults ages 18 and older who have a confirmed or suspected COVID-19 infection or had COVID-19 in the past. Also, healthy donors with no suspected COVID-19 infection Design: Participants will be screened with medical record review. Participants will be tested with a research assay to determine who was infected with COVID-19 and who was not. This test will be used to understand research results, not to advise patients. Participants with active infection must be isolated, usually in a hospital. Other participants may give blood samples at NIH or at their local doctor s office or lab. Participants may give blood samples up to three times a week for a total of ten times, and may also give blood samples after starting a vaccine trial. Participants will be contacted by phone or email every 2 months for up to 2 years.
Study identification
- NCT ID
- NCT04362865
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 679 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Apr 26, 2020
- Primary completion
- Feb 9, 2025
- Completion
- Feb 9, 2025
- Last update posted
- Mar 6, 2025
2020 – 2025
United States locations
- U.S. sites
- 4
- U.S. states
- 2
- U.S. cities
- 4
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Medstar Washington Hospital Center | Washington D.C. | District of Columbia | 20010 | — |
| Medstar Franklin Square Medical Center | Baltimore | Maryland | 21237 | — |
| National Institutes of Health Clinical Center | Bethesda | Maryland | 20892 | — |
| Medstar Montgomery Medical Center | Olney | Maryland | 20832 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04362865, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Mar 6, 2025 · Synced Sep 10, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04362865 live on ClinicalTrials.gov.