# Study of the Kinetics of Antibodies Against COVID-19 (SARS-CoV-2) and of Cellular Subpopulations of the Immune System

> **NCT04743388** · — · UNKNOWN · sponsor: **National and Kapodistrian University of Athens** · enrollment: 600 (estimated)

## Conditions studied

- COVID-19
- Healthy Volunteers
- Chronic Disease
- Hematological Malignancies
- Solid Tumor

## Interventions

- **BIOLOGICAL:** BNT162b2
- **BIOLOGICAL:** Other vaccine against SARS-Cov-2

## Key facts

- **NCT ID:** NCT04743388
- **Lead sponsor:** National and Kapodistrian University of Athens
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** UNKNOWN
- **Start date:** 2021-01-04
- **Primary completion:** 2022-08
- **Final completion:** 2022-12
- **Target enrollment:** 600 (ESTIMATED)
- **Last updated:** 2022-04-11


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04743388

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04743388, "Study of the Kinetics of Antibodies Against COVID-19 (SARS-CoV-2) and of Cellular Subpopulations of the Immune System". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT04743388. Licensed CC0.

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