Mucosal Immunity Against SARS-CoV-2 Infection in COVID-19 Patients (MuCo)

January 28, 2021 updated by: Radboud University Medical Center

Mucosal Immunity in Patients Diagnosed With SARS-CoV-2 Infection and Their Household Contacts

In this study nasal fluid (mucosal lining fluid), nose and throat swabs and blood was collected from patients with a confirmed SARS-CoV-2 infection who remained in home isolation, as well as from their household contacts who remained in home quarantine. On the collected nose and throat swabs a coronavirus PCR was performed. Antibodies against SARS-CoV-2 were measured in the mucosal lining fluid and blood samples.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Objective:

Primary Objective: to analyse the development of mucosal immunity against SARS-CoV-2 in nasal fluid of Covid-19 patients and their household contacts

Secondary Objective(s):

  • To descriptively analyse the correlation of mucosal antibodies with viral diagnostics and disease symptoms
  • To determine the correlation between mucosal and serum antibody levels
  • To study the functionality of serum and mucosal antibodies

Study design: A single-site, observational, prospective cohort study among COVID-19 patients and their household contacts Study population: The study will be conducted among COVID-19 patients with a laboratory-confirmed infection with SARS-CoV-2, as well as household contacts remaining in home quarantine at the same address, among secondary and tertiary hospital careworkers in the provinces of Gelderland and Noord-Brabant in The Netherlands.

Intervention (if applicable): N/A

Main study parameters/endpoints:

Mucosal antibodies: descriptive analysis of SARS-CoV-2 IgG, IgA, IgM and IgD concentrations in nasal fluid at the various collection moments.

Viral diagnostics: presence of SARS-CoV-2 in diagnostic specimens collected at inclusion visit.

Disease symptoms: presence of respiratory complaints in participants. Serum antibodies: descriptive analysis of SARS-CoV-antibody concentrations in serum at day 28 Antibody functionality: descriptive analysis of antibody functionality of serum and nasal fluid samples, including virus neutralization

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
187

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Netherlands
    • Gelderland
      • Nijmegen, Gelderland, Netherlands, 6500 HB
        • Radboudumc

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

laboratory confirmed Sars-Cov-2 cases and their household contacts.

Description

Inclusion Criteria:

  • Index case:

    • Laboratory-confirmed case of SARS-CoV-2, with a positive indication for home isolation, and;
    • With at least 2 household contacts remaining in home quarantine at the same address
  • Household contacts For each index case, the study will seek to recruit as many household contacts as possible in the same house as the index case. All household contacts of the index case remaining in home quarantine in the same house as the index case will be asked to participate.

Exclusion Criteria:

  • Covid-19 patients with a negative indication for home isolation, or having less than 2 household contacts remaining in home quarantine at the same address. For fingerprick blood collection, participants who have a medical indication against fingerprick blood collection will be excluded.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Index case and household contacts
  • nasophryngeal and throat swab at day 0.
  • collection of mucosal lining fluid: day 0, 7, 14, 28 for index case and day 0, 3, 6, 28 for household contacts.
  • fingerprick at day 28 (optional).
  • daily record of symptoms from day 0-28.
Procedure: nasopharyngeal and throat swab
diagnostic specimens via nasopharyngeal swab and throat swab were collected following the current standard operating procedures.
Procedure: collection of mucosal lining fluid
MLF will be collected via nasal absorption at the inclusion visit by study staff and four more time points by the parents or by the children themselves. Nasal absorption is performed by maneuvering a strip of synthetic absorptive matrices (SAM) into the lumen of the nostril, avoiding rubbing against the nasal mucosa. The outside of the nose is then pressed with a finger to cause apposition of the SAM against the mucosa.
Procedure: blood collection via fingerprick
Participants will be asked to wash their hands with soap and warm water. The procedure involves cleaning the ball of the fingertip with an alcohol swab, then using a sterile disposable lancet to pierce the skin (BD Microtainer Lancet or similar). The lancet is placed in a spring-loaded device, which propels the lancet a fixed distance (a few mm) into the skin when the trigger is pressed. Approximately 10-20 drops of blood (0.3 ml) will then be collected with a sterile capillary tube. The participant is given a cotton wool pad to mop up any extra blood, and an elastoplast-type bandage is placed over the finger if necessary. Fingerprick blood samples will only be collected from participants older than 6 months at 28-32 days after the first home visit (d0). Lancet length will be adjusted for age (2.0 mm for participants 8 years and older, 1.5 mm for participants older than 6 months and younger than 8 years).

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Mucosal antibodies
Time Frame: Day 0
Descriptive analysis of SARS-CoV-2 IgG, IgM and IgA concentrations in nasal fluid
Day 0
Mucosal antibodies
Time Frame: Day 3 (index cases)
Descriptive analysis of SARS-CoV-2 IgG, IgM and IgA concentrations in nasal fluid
Day 3 (index cases)
Mucosal antibodies
Time Frame: Day 6 (index cases)
Descriptive analysis of SARS-CoV-2 IgG, IgM and IgA concentrations in nasal fluid
Day 6 (index cases)
Mucosal antibodies
Time Frame: Day 7 (household contacts)
Descriptive analysis of SARS-CoV-2 IgG, IgM and IgA concentrations in nasal fluid
Day 7 (household contacts)
Mucosal antibodies
Time Frame: Day 14 (household contacts)
Descriptive analysis of SARS-CoV-2 IgG, IgM and IgA concentrations in nasal fluid
Day 14 (household contacts)
Mucosal antibodies in all participants
Time Frame: Day 28
Descriptive analysis of SARS-CoV-2 IgG, IgM and IgA concentrations in nasal fluid
Day 28

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
SARS-CoV-2 infection
Time Frame: day 0
SARS-CoV-2 PCR on nasopharyngeal swab and throat swab
day 0
Serum antibodies
Time Frame: day 28
Descriptive analysis of SARS-CoV-2 antibody concentrations in serum at day 28.
day 28
Functional antibody assays
Time Frame: Day 0
Descriptive analysis of the functionality of SARS-CoV-2 mucosal and serum antibodies
Day 0
Functional antibody assays
Time Frame: Day 3 (index cases)
Descriptive analysis of the functionality of SARS-CoV-2 mucosal and serum antibodies
Day 3 (index cases)
Functional antibody assays
Time Frame: Day 6 (index cases)
Descriptive analysis of the functionality of SARS-CoV-2 mucosal and serum antibodies
Day 6 (index cases)
Functional antibody assays
Time Frame: Day 7 (household contacts)
Descriptive analysis of the functionality of SARS-CoV-2 mucosal and serum antibodies
Day 7 (household contacts)
Functional antibody assays
Time Frame: Day 14 (household contacts)
Descriptive analysis of the functionality of SARS-CoV-2 mucosal and serum antibodies
Day 14 (household contacts)
Functional antibody assays
Time Frame: Day 28
Descriptive analysis of the functionality of SARS-CoV-2 mucosal and serum antibodies
Day 28

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Radboud University Medical Center

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Dimitri Diavatopoulos, Dr, Radboud University Medical Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 26, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 13, 2020

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 13, 2020

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 27, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 15, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 19, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
January 29, 2021

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 28, 2021

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2020

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2020-6342
  • NL73418.091.20 (Registry Identifier: CCMO)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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