Study of the Kinetics of Antibodies Against COVID-19 (SARS-CoV-2) and of Cellular Subpopulations of the Immune System
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ClinicalTrials.gov Identifier: NCT04743388 |
Recruitment Status :
Recruiting
First Posted : February 8, 2021
Last Update Posted : April 11, 2022
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Condition or disease | Intervention/treatment |
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COVID-19 Healthy Volunteers Chronic Disease Hematological Malignancies Solid Tumor | Biological: BNT162b2 Biological: Other vaccine against SARS-Cov-2 |
Study Type : | Observational [Patient Registry] |
Estimated Enrollment : | 600 participants |
Observational Model: | Cohort |
Time Perspective: | Prospective |
Target Follow-Up Duration: | 18 Months |
Official Title: | Study of the Kinetics of Antibodies Against SARS-CoV-2 and of Cellular Subpopulations of the Immune System in Volunteers Receiving the BNT162b2 Vaccine or Other Approved Vaccine Against SARS-CoV-2 |
Actual Study Start Date : | January 4, 2021 |
Estimated Primary Completion Date : | August 2022 |
Estimated Study Completion Date : | December 2022 |

Group/Cohort | Intervention/treatment |
---|---|
Cohort 1
Approximately 300 volunteers, healthy or with chronic diseases (diabetes mellitus, hypertension, heart disease, CRF, etc.) with no autoimmune disorders.
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Biological: BNT162b2
Vaccine against SARS-Cov-2 of the Pfizer/BioNTech companies Biological: Other vaccine against SARS-Cov-2 Any other vaccine authorized and administered by the Greek Ministry of Health against SARS-Cov-2 |
Cohort 2
People with hematological malignancies or solid tumors in various phases of their treatment (under treatment or in remission/ follow-up). This cohort may include patients with smoldering multiple myeloma (n=50), multiple myeloma (n=140), chronic lymphocytic leukemia (with or without hypoglobulinemia) (n=50), lymphoma (n=80), AL amyloidosis (n=30), patients who receive PARP (n=30), CDK4/6 (n=30), or immune checkpoint inhibitors (n=40), and patients under therapy with Androgen Receptor Targeted Agents (n=50).
|
Biological: BNT162b2
Vaccine against SARS-Cov-2 of the Pfizer/BioNTech companies Biological: Other vaccine against SARS-Cov-2 Any other vaccine authorized and administered by the Greek Ministry of Health against SARS-Cov-2 |
- Neutralizing antibodies against SARS-CoV-2 [ Time Frame: Day 50 (28 days after the second dose of the vaccine) ]Primary endpoint of the study is the development of neutralizing antibodies against SARS-CoV-2 on Day 50 28 days after the second dose of the vaccine) in the study populations
- Neutralizing antibodies against SARS-CoV-2 [ Time Frame: Day 1 ]Development of neutralizing antibodies against SARS-CoV-2 on day 1 (before the first dose of the vaccine)
- Neutralizing antibodies against SARS-CoV-2 [ Time Frame: Day 8 ]Development of neutralizing antibodies against SARS-CoV-2 on day 8
- Neutralizing antibodies against SARS-CoV-2 [ Time Frame: Day 22 ]Development of neutralizing antibodies against SARS-CoV-2 on day 22 (before the second dose of the vaccine)
- Neutralizing antibodies against SARS-CoV-2 [ Time Frame: Day 36 ]Development of neutralizing antibodies against SARS-CoV-2 on day 36
- Neutralizing antibodies against SARS-CoV-2 [ Time Frame: Month 3 ]Development of neutralizing antibodies against SARS-CoV-2 at 3 months post the second dose of the vaccine
- Neutralizing antibodies against SARS-CoV-2 [ Time Frame: Month 6 ]Development of neutralizing antibodies against SARS-CoV-2 at 6 months post the second dose of the vaccine
- Neutralizing antibodies against SARS-CoV-2 [ Time Frame: Month 9 ]Development of neutralizing antibodies against SARS-CoV-2 at 9 months post the second dose of the vaccine
- Neutralizing antibodies against SARS-CoV-2 [ Time Frame: Month 12 ]Development of neutralizing antibodies against SARS-CoV-2 at 12 months post the second dose of the vaccine
- Neutralizing antibodies against SARS-CoV-2 [ Time Frame: Month 18 ]Development of neutralizing antibodies against SARS-CoV-2 at 18 months post the second dose of the vaccine
- Development of anti-S-RBD antibodies against SARS-CoV-2 [ Time Frame: Day 1 ]Development of anti-S-RBD antibodies against SARS-CoV-2 on day 1 (before the first dose of the vaccine)
- Development of anti-S-RBD antibodies against SARS-CoV-2 [ Time Frame: Day 8 ]Development of anti-S-RBD antibodies against SARS-CoV-2 on day 8
- Development of anti-S-RBD antibodies against SARS-CoV-2 [ Time Frame: Day 22 ]Development of anti-S-RBD antibodies against SARS-CoV-2 on day 22 (before the second dose of the vaccine)
- Development of anti-S-RBD antibodies against SARS-CoV-2 [ Time Frame: Day 36 ]Development of anti-S-RBD antibodies against SARS-CoV-2 on day 36
- Development of anti-S-RBD antibodies against SARS-CoV-2 [ Time Frame: Day 50 ]Development of anti-S-RBD antibodies against SARS-CoV-2 on day 50
- Development of anti-S-RBD antibodies against SARS-CoV-2 [ Time Frame: Month 3 ]Development of anti-S-RBD antibodies against SARS-CoV-2 at 3 months post the second dose of the vaccine
- Development of anti-S-RBD antibodies against SARS-CoV-2 [ Time Frame: Month 6 ]Development of anti-S-RBD antibodies against SARS-CoV-2 at 6 months post the second dose of the vaccine
- Development of anti-S-RBD antibodies against SARS-CoV-2 [ Time Frame: Month 9 ]Development of anti-S-RBD antibodies against SARS-CoV-2 at 9 months post the second dose of the vaccine
- Development of anti-S-RBD antibodies against SARS-CoV-2 [ Time Frame: Month 12 ]Development of anti-S-RBD antibodies against SARS-CoV-2 at 12 months post the second dose of the vaccine
- Development of anti-S-RBD antibodies against SARS-CoV-2 [ Time Frame: Month 18 ]Development of anti-S-RBD antibodies against SARS-CoV-2 at 18 months post the second dose of the vaccine
- Number of memory B-cells against SARS-CoV-2 [ Time Frame: Day 1 ]According to antibody responses on day 1
- Number of memory B-cells against SARS-CoV-2 [ Time Frame: Day 8 ]According to antibody responses on day 8
- Number of memory B-cells against SARS-CoV-2 [ Time Frame: Day 22 ]According to antibody responses on day 22 (before the second dose of the vaccine)
- Number of memory B-cells against SARS-CoV-2 [ Time Frame: Day 36 ]According to antibody responses on day 36
- Number of memory B-cells against SARS-CoV-2 [ Time Frame: Day 50 ]According to antibody responses on day 50
- Number of memory B-cells against SARS-CoV-2 [ Time Frame: Month 3 ]According to antibody responses at 3 months post the second dose of the vaccine
- Number of memory B-cells against SARS-CoV-2 [ Time Frame: Month 6 ]According to antibody responses at 6 months post the second dose of the vaccine
- Number of memory B-cells against SARS-CoV-2 [ Time Frame: Month 9 ]According to antibody responses at 9 months post the second dose of the vaccine
- Number of memory B-cells against SARS-CoV-2 [ Time Frame: Month 12 ]According to antibody responses at 12 months post the second dose of the vaccine
- Number of memory B-cells against SARS-CoV-2 [ Time Frame: Month 18 ]According to antibody responses at 18 months post the second dose of the vaccine
- Number of memory T-cells against SARS-CoV-2 [ Time Frame: Day 1 ]According to antibody responses on day 1
- Number of memory T-cells against SARS-CoV-2 [ Time Frame: Day 8 ]According to antibody responses on day 8
- Number of memory T-cells against SARS-CoV-2 [ Time Frame: Day 22 ]According to antibody responses on day 22 (before the second dose of the vaccine)
- Number of memory T-cells against SARS-CoV-2 [ Time Frame: Day 36 ]According to antibody responses on day 36
- Number of memory T-cells against SARS-CoV-2 [ Time Frame: Day 50 ]According to antibody responses on day 50
- Number of memory T-cells against SARS-CoV-2 [ Time Frame: Month 3 ]According to antibody responses at 3 months post the second dose of the vaccine
- Number of memory T-cells against SARS-CoV-2 [ Time Frame: Month 6 ]According to antibody responses at 6 months post the second dose of the vaccine
- Number of memory T-cells against SARS-CoV-2 [ Time Frame: Month 9 ]According to antibody responses at 9 months post the second dose of the vaccine
- Number of memory T-cells against SARS-CoV-2 [ Time Frame: Month 12 ]According to antibody responses at 12 months post the second dose of the vaccine
- Number of memory T-cells against SARS-CoV-2 [ Time Frame: Month 18 ]According to antibody responses at 18 months post the second dose of the vaccine
- Number of monocytes (CD14+, CD16+) [ Time Frame: Day 1 ]According to antibody responses on day 1
- Number of monocytes (CD14+, CD16+) [ Time Frame: Day 8 ]According to antibody responses on day 8
- Number of monocytes (CD14+, CD16+) [ Time Frame: Day 22 ]According to antibody responses on day 22 (before the second dose of the vaccine)
- Number of monocytes (CD14+, CD16+) [ Time Frame: Day 36 ]According to antibody responses on day 36
- Number of monocytes (CD14+, CD16+) [ Time Frame: Day 50 ]According to antibody responses on day 50
- Number of monocytes (CD14+, CD16+) [ Time Frame: Month 3 ]According to antibody responses at 3 months post the second dose of the vaccine
- Number of monocytes (CD14+, CD16+) [ Time Frame: Month 6 ]According to antibody responses at 6 months post the second dose of the vaccine
- Number of monocytes (CD14+, CD16+) [ Time Frame: Month 9 ]According to antibody responses at 9 months post the second dose of the vaccine
- Number of monocytes (CD14+, CD16+) [ Time Frame: Month 12 ]According to antibody responses at 12 months post the second dose of the vaccine
- Number of monocytes (CD14+, CD16+) [ Time Frame: Month 18 ]According to antibody responses at 18 months post the second dose of the vaccine
- Interleukin 6 (IL-6), Interleukin 3 (IL-3), Interleukin 1b (IL-1b) levels [ Time Frame: Day 1 ]Inflammatory cytokines measurements on day 1 (before the first dose of the vaccine)
- Interleukin 6 (IL-6), Interleukin 3 (IL-3), Interleukin 1b (IL-1b) levels [ Time Frame: Day 8 ]Inflammatory cytokines measurements on day 8
- Interleukin 6 (IL-6), Interleukin 3 (IL-3), Interleukin 1b (IL-1b) levels [ Time Frame: Day 22 ]Inflammatory cytokines measurements on day 22 (before the second dose of the vaccine)
- Interleukin 6 (IL-6), Interleukin 3 (IL-3), Interleukin 1b (IL-1b) levels [ Time Frame: Day 23 ]Inflammatory cytokines measurements on day 23
- Interleukin 6 (IL-6), Interleukin 3 (IL-3), Interleukin 1b (IL-1b) levels [ Time Frame: Day 36 ]Inflammatory cytokines measurements on day 36
- Interleukin 6 (IL-6), Interleukin 3 (IL-3), Interleukin 1b (IL-1b) levels [ Time Frame: Day 50 ]Inflammatory cytokines measurements on day 50
- Interleukin 6 (IL-6), Interleukin 3 (IL-3), Interleukin 1b (IL-1b) levels [ Time Frame: Month 3 ]Inflammatory cytokines measurements at 3 months post the second dose of the vaccine
- Interleukin 6 (IL-6), Interleukin 3 (IL-3), Interleukin 1b (IL-1b) levels [ Time Frame: Month 6 ]Inflammatory cytokines measurements at 6 months post the second dose of the vaccine
- Interleukin 6 (IL-6), Interleukin 3 (IL-3), Interleukin 1b (IL-1b) levels [ Time Frame: Month 9 ]Inflammatory cytokines measurements at 9 months post the second dose of the vaccine
- Interleukin 6 (IL-6), Interleukin 3 (IL-3), Interleukin 1b (IL-1b) levels [ Time Frame: Month 12 ]Inflammatory cytokines measurements at 12 months post the second dose of the vaccine
- Interleukin 6 (IL-6), Interleukin 3 (IL-3), Interleukin 1b (IL-1b) levels [ Time Frame: Month 18 ]Inflammatory cytokines measurements at 18 months post the second dose of the vaccine
- TNF-a levels [ Time Frame: Day 1 ]Inflammatory cytokines measurements on day 1 (before the first dose of the vaccine)
- TNF-a levels [ Time Frame: Day 8 ]Inflammatory cytokines measurements on day 8
- TNF-a levels [ Time Frame: Day 22 ]Inflammatory cytokines measurements on day 22 (before the second dose of the vaccine)
- TNF-a levels [ Time Frame: Day 23 ]Inflammatory cytokines measurements on day 23
- TNF-a levels [ Time Frame: Day 36 ]Inflammatory cytokines measurements on day 36
- TNF-a levels [ Time Frame: Day 50 ]Inflammatory cytokines measurements on day 50
- TNF-a levels [ Time Frame: Month 3 ]Inflammatory cytokines measurements at 3 months post the second dose of the vaccine
- TNF-a levels [ Time Frame: Month 6 ]Inflammatory cytokines measurements at 6 months post the second dose of the vaccine
- TNF-a levels [ Time Frame: Month 9 ]Inflammatory cytokines measurements at 9 months post the second dose of the vaccine
- TNF-a levels [ Time Frame: Month 12 ]Inflammatory cytokines measurements at 12 months post the second dose of the vaccine
- TNF-a levels [ Time Frame: Month 18 ]Inflammatory cytokines measurements at 18 months post the second dose of the vaccine
- CRP levels [ Time Frame: Day 1 ]CRP blood level measurements on day 1 (before the first dose of the vaccine)
- CRP levels [ Time Frame: Day 8 ]CRP blood level measurements on day 8
- CRP levels [ Time Frame: Day 22 ]CRP blood level measurements on day 22 (before the second dose of the vaccine)
- CRP levels [ Time Frame: Day 23 ]CRP blood level measurements on day 23
- CRP levels [ Time Frame: Day 36 ]CRP blood level measurements on day 36
- CRP levels [ Time Frame: Day 50 ]CRP blood level measurements on day 50
- CRP levels [ Time Frame: Month 3 ]Inflammatory cytokines measurements at 3 months post the second dose of the vaccine
- CRP levels [ Time Frame: Month 6 ]Inflammatory cytokines measurements at 6 months post the second dose of the vaccine
- CRP levels [ Time Frame: Month 9 ]Inflammatory cytokines measurements at 9 months post the second dose of the vaccine
- CRP levels [ Time Frame: Month 12 ]Inflammatory cytokines measurements at 12 months post the second dose of the vaccine
- CRP levels [ Time Frame: Month 18 ]Inflammatory cytokines measurements at 18 months post the second dose of the vaccine
Biospecimen Retention: Samples With DNA

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- Healthy volunteers and all individuals who, according to the instructions of the Greek State are considered eligible to receive the BNT162b2 vaccine
- Age ≥ 18 years old
Exclusion Criteria:
- Serious allergy problems i.e. hospitalization due to a serious allergic reaction (anaphylaxis)

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04743388
Contact: Ioanna Charitaki | +30 6976156403 | j.charitaki@gmail.com |
Greece | |
Department of Clinical Therapeutics, General Hospital of Athens ALEXANDRA | Recruiting |
Athens, Greece | |
Contact: Evangelos Terpos, MD |
Principal Investigator: | Evangelos Terpos | National and Kapodistrian University of Athens |
Responsible Party: | Prof Evangelos Terpos, Professor of Therapeutics-Hematology, National and Kapodistrian University of Athens |
ClinicalTrials.gov Identifier: | NCT04743388 |
Other Study ID Numbers: |
900/24-12-2020 |
First Posted: | February 8, 2021 Key Record Dates |
Last Update Posted: | April 11, 2022 |
Last Verified: | April 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Plan Description: | At the end of the study, the results will be announced in medical conferences or medical journals. |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | No |
COVID-19 BNT162b2 vaccine Antibodies SARS-CoV-2 |
COVID-19 Hematologic Neoplasms Chronic Disease Respiratory Tract Infections Infections Pneumonia, Viral Pneumonia Virus Diseases Coronavirus Infections Coronaviridae Infections |
Nidovirales Infections RNA Virus Infections Lung Diseases Respiratory Tract Diseases Neoplasms Disease Attributes Pathologic Processes Neoplasms by Site Hematologic Diseases |