Identification and Characterization of SARS-CoV-2 Specific CD8 T Cells in Humans

Running, not enrolling

Conditions studied: COVID-19

In brief

Background: The higher death rate from COVID-19 in the older population is associated with low CD8 T cell counts in the blood. Researchers want to learn the status of CD8 T cells specific to SARS-CoV-2 and their changes with aging and in COVID-19. This may help to identify why COVID-19 is particularly lethal in the elderly and help to create an effective vaccine against SARS-CoV-2 in the elderly. Objective: To identify SARS-CoV-2 specific CD8 T cells in humans, and to determine their quantity and quality in people who have recovered from COVID-19. Eligibility: Maryland residents age 18 and older who have tested positive for and recovered from COVID-19. Design: Participants will be screened by phone. They must be able to provide a copy of their positive COVID-19 test result. Participants will visit the NIA/Clinical Research Unit. The visit will take about 1 hour. Laboratory tests showing a positive COVID-19 result will be verified. Participants vital signs will be checked. This will include blood pressure, temperature, pulse, and respiration. Height and weight will be measured. Participants will have a medical history and medicine review. They will complete a COVID-19 questionnaire. Participants will have blood drawn. They will give a urine sample. Participants will give a saliva sample. They will rinse their mouth with water. After about 3 minutes, they will let saliva pool in the base of their mouth and then spit into a sterile container. Participants may be asked if they would be willing to return for optional visits at about 4 months and 1 year later. They will repeat the same laboratory sampling performed at the first visit. ...

Key facts

Study ID: NCT04565067
Run by: National Institute on Aging (NIA)
People needed: 83
Starts: 2020-09-22
Expected to finish: 2027-09-30
Last updated by the study team: 2026-01-14

Who can join

Age: 18 and older, up to 100. Sex: any. Healthy volunteers: not accepted.

You may not qualify if…

An individual who meets any of the following criteria will be excluded from participation in this study:
Unable to verify identification of volunteer by state issued ID card, driver's license, or military ID. Participants earning greater than $600.00/year are issued a 1099 form, therefore, positive identification is required.
Unable to provide informed consent
Current use of steroids, immunosuppressive medications, radiation therapy, or chemotherapy medications.
Pregnancy.
Received immunization therapy for COVID-19 or have received a COVID-19 vaccination prior to Visit 1.
In addition, eligible participants may not be immediately able to participate in the study but might be eligible at a later date. These include:
Symptoms of a viral infection on visit 1 (defer until resolved).
Medication: Volunteers taking the following medications would be deferred for 2 weeks after course has been completed and volunteer is feeling well: Antibiotics, antifungals, antimalarials, antvirals.
Temporary steroids (tapers): Deferred for 72 hours after symptoms are resolved and prescription is completed if taken orally, intravenously, or intramuscular. No deferral if taken intranasal, inhaled, or for joint injection.
Infection or Fever: Deferred until 2 weeks after antibiotics are completed and /or volunteer is feeling well.
We wish to only select recovered confirmed COVID-19 patients. Therefore, those who may have a household member (co-habitant) who is newly diagnosed with COVID-19 or who has symptoms will be deferred for 14 days.
Treatment with another investigational drug or other intervention within 14 days of visit 1 per the discretion of the Principal Investigator.

Where it is running

National Institute of Aging, Clinical Research Unit — Baltimore, Maryland, United States

Full record on ClinicalTrials.gov

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