AzTrials
AzTrials

Immune DeficiencyCOV-POPARTNCT04824651

Covid-19 Vaccine Cohort in Specific Populations

An observational study of Immune Deficiency, run by ANRS, Emerging Infectious Diseases at 3 sites in France.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

Multicentre national cohort study with prospective data collection and biological specimen collection. Ancillary study in this cohort : pediatric cohort with participants from 5 to 17 years old. Enrollment complete for adult cohort. Active recruting for ancillary pediatric cohort. Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
Conditions the study is for
Immune Deficiency
What is being tested?
COVID-19 vaccine
Type of treatment
Vaccines
How many people
6,922 participants
Where
3 sitesFrance
Study dates
25 Mar 2021to 11 Dec 2024
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: 6112 participants are inclued in the adult cohort. Enrollment objective in the ancillary study (pediatric cohort) from 5 to 17 years old (active enrollment): 810. The specific populations of the study for adult cohort: Patients with solid cancer solid organ transplant patients Allogeneic hematopoietic stem cell transplant patients Patients with chronic kidney failure disease and dialysis Patients with Multiple Sclerosis / Neuromyelitis optica spectrum disorder Patients with Chronic inflammatory rheumatism Patients with Autoimmune and autoinflammatory systemic diseases Patients with Hypogammaglobulinemia Patients obese non diabetic Patients diabetic (type I and II) obese or not People with HIV-1 (only) Control group (free from chronic conditions of interest listed above): 18 to 74 years ≥75 years (senior group) Vaccination schedule with Astra-Zeneca vaccine first dose and Pfizer vaccine second dose

Who may be able to join

  • General inclusion criteria for all patients of all groups
  • Be 18 years or older
  • Get vaccinated against Covid-19 as part of the national vaccination campaign or having already received a first or second vaccine injection as part of the national vaccination campaign
  • Accept the conditions of participation corresponding to each sub-population
  • Commit to respecting the schedule of visits provided in the research protocol
  • Plan to reside in France for at least 2.5 years from inclusion date
Show all 29Show fewer
  • Give their free, informed and written consent (at the latest on the day of inclusion and before any examination / samples) by signing the consent form
  • Be a member of or beneficiary of a social security scheme (State Medical Aid is not a social security scheme).
  • General inclusion criteria for patients with a chronic condition of interest
  • Present at least one pathology listed
  • If the participant is participating in the in-depth immunology and virology study, they must have only one of the pathology of interest listed
  • Inclusion criteria for control subjects • Be free from the chronic conditions of interest listed or other chronic conditions/treatment that may affect the immune response
  • Inclusion criteria for control subjects free from chronic conditions of interest and with first injection with Astra-Zeneca vaccine AZD1222 and second injection with Pfizer ARNm vaccine BNT162b2
  • Be vaccinated with a first injection with Astra-Zeneca vaccine AZD1222 and a second injection with Pfizer ARNm vaccine BNT162b2
  • NON INCLUSION CRITERIA :
  • General non inclusion Criteria for all participants of all groups
  • Be under protective supervision (guardian or curatorship)
  • Being a pregnant or breastfeeding woman
  • Present a contraindication to Covid-19 vaccination : Have a known or suspected allergy to any component of the vaccine, Have had at-risk contact with a confirmed Covid-19 person in the last 7 days, Have presented clinical signs suggestive of Covid-19 in the last 7 days, Have an acute febrile episode on inclusion / vaccination, Have received a vaccine in the last 15 days ...
  • Have had a documented Covid-19 Infection (PCR or antigenic test)
  • Refuse that their Social Security number is collected for accessing the National Health Data System (NSDS)/Data Health Hub national health databases
  • For safety reasons, must agree to not enter in a vaccine clinical trial during the entire period of inclusion and follow-up of the research
  • Specific non inclusion criteria for PLWHIV
  • Being infected with HIV-2
  • Presenting another cause for immunosuppression (undergoing immunosuppressive treatment, biotherapy)
  • Presenting a non controlled opportunistic infection
  • Specific non-inclusion criteria for control subjects
  • Have one or more of the chronic conditions of interest listed or affected by any other pathology or treatment that may affect the immune response (autoimmune/inflammatory pathology or immune deficiency not listed, liver failure, immunosuppressive therapy (like oral corticosteroids at >= 10 mg/d Prednisone equivalent for more than 15 days) or radiotherapy within 6 months prior to inclusion or planned for the duration of the study)
  • Life expectancy of less than 2 years

Who cannot join

None listed.

Trial locations and contacts

3 sites in 1 country.

France3 sites
  • Cmg-Ec U1219

    Bordeaux

  • Nîmes CHU

    Nîmes

  • Paris Cochin APHP

    Paris

Other trials in France

About this study

Multicentre national cohort study with prospective data collection and biological specimen collection.

Ancillary study in this cohort : pediatric cohort with participants from 5 to 17 years old.

Enrollment complete for adult cohort. Active recruting for ancillary pediatric cohort.

Read the detailed description

Primary Objective

1.Evaluate in a standardized manner in each subpopulation the humoral immune response to Covid-19 vaccination at 1, 6, 12, 24 months (M) after the last dose of vaccine (1 or 2 dose schedule depending on the vaccines) and standardized assessment of the humoral response 1 month after receipt of the third injection in participants receiving a third injection as recommended

Secondary objectives

  1. Evaluate the cellular immune response to Covid-19 vaccination at Inclusion, 6, 12 and 24 months after the first injection (single-injection scheme) or after the second injection of the vaccine (two or three-injections regimens) in each subpopulation
  2. Compare the humoral immune response at 1, 6, 12, 24 months after the first injection (one-injection scheme) or after the second injection of vaccine (two- or three-injections regimens) of each subpopulation with a control group of subjects without the chronic diseases of interest and from any other diseases or treatment taht may have an influence on the immune response.
  3. Compare the humoral immune response after 3 injections (1 month after the third dose) to that after 2 injections (1 month after the second dose) in participants with received a third injection as current recommendations
  4. In each subpopulation, study the factors associated with the humoral immune response at 1 month and the persistence of the humoral immune response at 6, 12, 24 months as a function of age, stage of disease, treatments, type of vaccine (as well as characteristics specific to the subpopulations studied)
  5. Evaluate and characterize the humoral immune response for participants who received a booster dose with mRNA vaccine acording to recommendations in force
  6. Compare the humoral immune response between different specific subpopulations
  7. Describe the seroconversion for anti-nucleoprotein antibodies
  8. Immuno-virologically characterize vaccine failures (SARS-CoV2 infection) during follow-up
  9. Identify genetic determinants of the immune response based on the underlying pathology and ongoing treatments if applicable (response and resistance to vaccination)

Specifics secondary objectives for participants with the first dose of Astra-Zeneca vaccine and the second dose of Pfizer vaccine

  1. Evaluate the humoral and the cellular immune response to Covid-19 vaccination with this vaccination schedule
  2. Evaluate the clinical reaction (local and generale) after this vaccination schedule
Being tested
COVID-19 vaccine
Keywords
COVID-19 vaccine, Immunogenicity, Immunosuppression, Population at risk
Medical subject headings
Immunologic Deficiency Syndromes

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • COVID-19 vaccineBiological

    Vaccination done as part of France's COVID-19 Vaccination Campaign

Study groups in NCT04824651
Study groupRoleWhat they receive
Solid cancerobjective : 800 participants for adult cohort, 100 for pediatric cohort (solid cancer and malignant hemopathy)
Receives: Biological: COVID-19 vaccine
Solid organ transplantationobjective : 700 participants for adult cohort, 50 for pediatric cohort
Receives: Biological: COVID-19 vaccine
Allogeneic hematopoietic stem cell transplantationobjective : 350 participants for adult cohort, 50 for pediatric cohort
Receives: Biological: COVID-19 vaccine
Chronic renal failurePatients with chronic renal failure stage 4, 5 who receive dialysis or not. objective : 350 participants for adult cohort, 30 for pediatric cohort
Receives: Biological: COVID-19 vaccine
Autoimmune and autoinflammatory systemic diseasesSystemic lupus erythematosus ,Systemic Vasculitides,... objective : 750 participants for adult cohort, 130 for pediatric cohort
Receives: Biological: COVID-19 vaccine
Multiple sclerosis/ Neuromyelitis optica diseasesMS defined by Mac Donald et al. 2017 and Neuromyelitis optica defined by Wingerchuk et al. 2015 ; objective : 600 participants for adult cohort
Receives: Biological: COVID-19 vaccine
Chronic inflammatory rheumatismAnkylosing spondylitis and rheumatoid polyarthritis objective : 600 participants for adult cohort
Receives: Biological: COVID-19 vaccine
Hypogammaglobulinemiaobjective : 300 participants for adult cohort
Receives: Biological: COVID-19 vaccine
Obese non diabeticBMI ≥ 30 objective : 1400 participants for adult cohort, 100 for pediatric cohort
Receives: Biological: COVID-19 vaccine
Diabetic (type I and II) obese or notobjective : 1400 participants for adult cohort, 100 for pediatric cohort
Receives: Biological: COVID-19 vaccine
People living with HIV-1objective : 1400 participants for adult cohort
Receives: Biological: COVID-19 vaccine
Senior group (free from chronic conditions of interest listed above)≥75 years objective : 450 participants for adult cohort
Receives: Biological: COVID-19 vaccine
Control group (free from chronic conditions of interest listed above)18 to 74 years objective : 1400 participants for adult cohort, 100 for pediatric cohort (from 5 to 17 years old)
Receives: Biological: COVID-19 vaccine
Control AZ-PF group (free from chronic conditions of interest listed above)Participants with first dose of Astra-Zeneca vaccine AZD1222 and second dose of Pfizer ARNm vaccine BNT162b2 objective : 200 participants for adult cohort
Receives: Biological: COVID-19 vaccine
Major sickle cell syndrome100 for pediatric cohort (from 5 to 17 years old)
Receives: Biological: COVID-19 vaccine

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Humoral immunity to Covid-19 vaccination using 3 serological criteria:

    • Anti-Spike (test 1) and anti RBD (test 2) antibodies (quantitative Elisa + pourcentage of participants with positive Elisa)
    • Proportion of participants with IgG anti-Spike titer above a defined threshold
    • Seroneutralization, by conventional in vitro seroneutralization test, for participants having test 1 and / or test 2 positive: titer of neutralizing antibodies and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20 Seroneutralization, by neutralization test on SARS-CoV-2 variants, in the first 50 participants included by subpopulation and with test 1 and / or test 2 positive 1 month after the second vaccine injection: SARS-CoV-2 specific neutralizing antibodies titre and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20

    Measured: at Inclusion

  2. These primary outcome only concern the adult cohort. Humoral immunity to Covid-19 vaccination using 3 serological criteria:

    • Anti-Spike (test 1) and anti RBD (test 2) antibodies (quantitative Elisa + pourcentage of participants with positive Elisa)
    • Proportion of participants with IgG anti-Spike titer above a defined threshold
    • Seroneutralization, by conventional in vitro seroneutralization test, for participants having test 1 and / or test 2 positive: titer of neutralizing antibodies and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20 Seroneutralization, by neutralization test on SARS-CoV-2 variants, in the first 50 participants included by subpopulation and with test 1 and / or test 2 positive 1 month after the second vaccine injection: SARS-CoV-2 specific neutralizing antibodies titre and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20

    Measured: before the second injection (if applicable)

  3. Humoral immunity to Covid-19 vaccination using 3 serological criteria:

    • Anti-Spike (test 1) and anti RBD (test 2) antibodies (quantitative Elisa + pourcentage of participants with positive Elisa)
    • Proportion of participants with IgG anti-Spike titer above a defined threshold
    • Seroneutralization, by conventional in vitro seroneutralization test, for participants having test 1 and / or test 2 positive: titer of neutralizing antibodies and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20 Seroneutralization, by neutralization test on SARS-CoV-2 variants, in the first 50 participants included by subpopulation and with test 1 and / or test 2 positive 1 month after the second vaccine injection: SARS-CoV-2 specific neutralizing antibodies titre and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20

    Measured: Month 1

  4. Humoral immunity to Covid-19 vaccination using 3 serological criteria:

    • Anti-Spike (test 1) and anti RBD (test 2) antibodies (quantitative Elisa + pourcentage of participants with positive Elisa)
    • Proportion of participants with IgG anti-Spike titer above a defined threshold
    • Seroneutralization, by conventional in vitro seroneutralization test, for participants having test 1 and / or test 2 positive: titer of neutralizing antibodies and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20 Seroneutralization, by neutralization test on SARS-CoV-2 variants, in the first 50 participants included by subpopulation and with test 1 and / or test 2 positive 1 month after the second vaccine injection: SARS-CoV-2 specific neutralizing antibodies titre and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20

    Measured: Month 1 after the third dose (if applicable)

  5. Humoral immunity to Covid-19 vaccination using 3 serological criteria:

    • Anti-Spike (test 1) and anti RBD (test 2) antibodies (quantitative Elisa + pourcentage of participants with positive Elisa)
    • Proportion of participants with IgG anti-Spike titer above a defined threshold
    • Seroneutralization, by conventional in vitro seroneutralization test, for participants having test 1 and / or test 2 positive: titer of neutralizing antibodies and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20 Seroneutralization, by neutralization test on SARS-CoV-2 variants, in the first 50 participants included by subpopulation and with test 1 and / or test 2 positive 1 month after the second vaccine injection: SARS-CoV-2 specific neutralizing antibodies titre and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20

    Measured: Month 6

  6. Humoral immunity to Covid-19 vaccination using 3 serological criteria:

    • Anti-Spike (test 1) and anti RBD (test 2) antibodies (quantitative Elisa + pourcentage of participants with positive Elisa)
    • Proportion of participants with IgG anti-Spike titer above a defined threshold
    • Seroneutralization, by conventional in vitro seroneutralization test, for participants having test 1 and / or test 2 positive: titer of neutralizing antibodies and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20 Seroneutralization, by neutralization test on SARS-CoV-2 variants, in the first 50 participants included by subpopulation and with test 1 and / or test 2 positive 1 month after the second vaccine injection: SARS-CoV-2 specific neutralizing antibodies titre and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20

    Measured: Month 12

  7. Humoral immunity to Covid-19 vaccination using 3 serological criteria:

    • Anti-Spike (test 1) and anti RBD (test 2) antibodies (quantitative Elisa + pourcentage of participants with positive Elisa)
    • Proportion of participants with IgG anti-Spike titer above a defined threshold
    • Seroneutralization, by conventional in vitro seroneutralization test, for participants having test 1 and / or test 2 positive: titer of neutralizing antibodies and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20 Seroneutralization, by neutralization test on SARS-CoV-2 variants, in the first 50 participants included by subpopulation and with test 1 and / or test 2 positive 1 month after the second vaccine injection: SARS-CoV-2 specific neutralizing antibodies titre and percentage of patients with a neutralizing antibody titer specific to SARS-CoV-2 ≥20

    Measured: Month 24

  8. Percentage of participants seroconverting for Anti Nucleoprotein antibodies

    (qualitative Elisa)

    Measured: Inclusion

  9. Percentage of participants seroconverting for Anti Nucleoprotein antibodies

    (qualitative Elisa)

    Measured: before the second injection (if applicable)

  10. Percentage of participants seroconverting for Anti Nucleoprotein antibodies

    (qualitative Elisa)

    Measured: Month 1

  11. Percentage of participants seroconverting for Anti Nucleoprotein antibodies

    (qualitative Elisa)

    Measured: Month 6

  12. Percentage of participants seroconverting for Anti Nucleoprotein antibodies

    (qualitative Elisa)

    Measured: Month 12

  13. Percentage of participants seroconverting for Anti Nucleoprotein antibodies

    (qualitative Elisa)

    Measured: Month 24

  14. Percentage of participants seroconverting for Anti Nucleoprotein antibodies

    (qualitative Elisa)

    Measured: before the booster dose

  15. Percentage of participants seroconverting for Anti Nucleoprotein antibodies

    (qualitative Elisa)

    Measured: Month 1 after the booster dose

  16. Seroconversion or increase of factor 2 titer of antibodies anti-Spike/anti-RBD between the second and the third dose for the participants with 3 injections

    (qualitative Elisa)

    Measured: Month 1 after the third dose

  17. Seroconversion or increased levels of anti-Spike/anti-RBD antibodies between the last injection of the initial vaccine regimen and the booster dose

    (qualitative Elisa)

    Measured: Month 1 after the booster dose

Secondary outcomes (9)
  1. These secondary outcome only concern the adult cohort. Cellular immunity to Covid-19 vaccination

    ELISpot Test

    Measured: Inclusion

  2. Cellular immunity to Covid-19 vaccination

    ELISpot Test

    Measured: Month 6

  3. Cellular immunity to Covid-19 vaccination

    ELISpot Test

    Measured: Month 12

  4. Cellular immunity to Covid-19 vaccination

    ELISpot Test

    Measured: Month 24

  5. For participants with first injection with Astra-Zeneca vaccine AZD1222 and second injection with Pfizer ARNm vaccine BNT161b2 : humoral and cellular immunity to Covid-19 vaccination

    qualitative Elisa and ELISpot Test

    Measured: Inclusion

  6. For participants with first injection with Astra-Zeneca vaccine AZD1222 and second injection with Pfizer ARNm vaccine BNT161b2 : humoral and cellular immunity to Covid-19 vaccination

    qualitative Elisa and ELISpot Test

    Measured: Month 1

  7. For participants with first injection with Astra-Zeneca vaccine AZD1222 and second injection with Pfizer ARNm vaccine BNT161b2 : collection of immediate adverse effects

    collection by a self-monitoring log

    Measured: within 15 minutes after injection of Pfizer ARNm vaccine

  8. For participants with first injection with Astra-Zeneca vaccine AZD1222 and second injection with Pfizer ARNm vaccine BNT161b2 : collection of adverse effects expected from the database

    collection by a self-monitoring log

    Measured: within 7 days after injection of Pfizer ARNm vaccine

  9. For participants with first injection with Astra-Zeneca vaccine AZD1222 and second injection with Pfizer ARNm vaccine BNT161b2 : collection of adverse effects

    collection by a self-monitoring log

    Measured: within 28 days after injection of Pfizer ARNm vaccine

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted1 Apr 2021
  2. Study start25 Mar 2021
  3. Primary completion11 Dec 2024
  4. Study completion11 Dec 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
6,922 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04824651
Sponsor's protocol ID
ANRS0001S
Acronym
COV-POPART
Status last verified
Oct 2026
First submitted
25 Mar 2021
Last updated
16 Oct 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Chalouni M, Loubet P, Lhomme E, Ninove L, Barrou B, Blay JY, Hourmant M, de Seze J, Laville M, Laviolle B, Lelievre JD, Morel J, Quoc SN, Spano JP, Terrier B, Thiebaut A, Viallard JF, Vrtovsnik F, Circosta S, Barquin A, Gharib M, Tartour E, Parfait B, Thiebaut R, Meyer L, de Lamballerie X, Launay O, Wittkop L; ANRS0001S COV-POPART study group. Association between humoral serological markers levels and risk of SARS-CoV-2 infection after the primary COVID-19 vaccine course among ANRS0001S COV-POPART cohort participants. BMC Infect Dis. 2024 Sep 27;24(1):1049. doi: 10.1186/s12879-024-09861-5.

    PubMed 39333909

Questions about this trial

What is this clinical trial studying?

An observational study of Immune Deficiency, run by ANRS, Emerging Infectious Diseases at 3 sites in France.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 29 inclusion and 0 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 16 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 3 sites in France. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Humoral immunity to Covid-19 vaccination using 3 serological criteria: (time frame: at Inclusion). The study lists 17 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04824651, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 Oct 2026.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in