Responses to COVID19 Vaccination in Patients With a Treatment History of Rituximab. (RituxiVac)

May 27, 2021 updated by: University Hospital Inselspital, Berne

Registry Study for COVID19 Vaccination Efficacy in Patients With a Treatment History of Rituximab.

Patients with treatment history of rituximab since 01.01.2019 and immunocompetent volunteers will be contacted to give a blood sample after their COVID19 vaccination, and in a subset also before vaccination. Immune responses of antibodies and SARS-CoV2-specific T-cells to the vaccination will be quantified and the rituximab effect on COVID19 vaccine-induced immune responses is analyzed.

Study Overview

Status

Status

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

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.

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 (Anticipated)

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.
425

Contacts and Locations

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

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • Switzerland
    • BE
      • Bern, BE, Switzerland, 3010
        • Recruiting
        • University Hospital Bern Inselspital
        • Contact:
        • Contact:
        • Principal Investigator:
          • Daniel Sidler, MD PhD
        • Sub-Investigator:
          • Matthias B Moor, MD PhD

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Participating Centers / Participating Departments: all at Bern University Hospital Insel)

Description

Inclusion Criteria:

  1. Patients who were treated with anti-CD20 treatment since 01.01.2010
  2. Patients who received a COVID19 vaccination (completion of all required doses) until target date (initial target: 30.05.21, but can be delayed to 30.06.21, 30.07.21 or 30.08.21 in case of insufficient enrollment)
  3. Volunteers without a history of anti-CD20 treatment exposure
  4. All: written informed consent.

Exclusion Criteria:

Exclusion criteria for patients (any of the following)

  1. Patients aged 18 years and younger at time of study enrollment and/or
  2. Pregnant or lactating women at time of study enrollment and/or
  3. Patients who do not provide written informed consent and/or
  4. Patients who have previously had a COVID19 infection (self-reported COVID19 disease, positive PCR or serology)
  5. Patients who are in a dependency relationship with the study personnel (hierarchical, social)

Exclusion criteria for volunteers (any of the following)

  1. Volunteers aged 18 years and younger at time of study enrollment and/or
  2. Pregnant or lactating women at time of study enrollment and/or
  3. Volunteers who do not provide informed consent and/or
  4. Volunteers who suffer from an active autoimmune disease, active cancer, immunosuppressive therapy, history of anti-CD20 treatment and/or
  5. Volunteers who have previously had a COVID19 infection (self-reported COVID19 disease, positive PCR or serology)
  6. Volunteers who did not complete their COVID19 vaccination
  7. Volunteers who are in a dependency relationship with the study personnel (hierarchical, social)

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

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.
Immunocompetent controls
Participants aged at least 18 years, no history of COVID19, no history of anti-CD20 treatment
Biological: Completion of COVID19 vaccine at least 4 weeks ago
Completion of COVID19 vaccination course at least 4 weeks ago.
Patients with a treatment history of rituximab
Participants aged at least 18 years, no history of COVID19, history of at least 1 dose of anti-CD20 treatment received since 01/01/2010
Biological: Completion of COVID19 vaccine at least 4 weeks ago
Completion of COVID19 vaccination course at least 4 weeks ago.
Drug: History of exposure to anti-CD20 treatment since 01/01/2010
Intravenous treatment history of anti-CD20 treatment since 01/01/2010

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
Humoral immune response to SARS-CoV2 spike protein
Time Frame: At least 4 weeks after completion of COVID19 vaccination
Percentage of all patients developing IgG antibodies against SARS-CoV2 spike protein that is comparable to the immunological response in immunocompetent controls (-2 standard deviations of mean)
At least 4 weeks after completion of COVID19 vaccination

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
Correlation of IgG antibodies against SARS-CoV2 with age, history, co-medication and biomarkers of immunocompetence
Time Frame: At least 4 weeks after completion of COVID19 vaccination
Multivariable regression models for IgG antibodies against SARS-CoV2 with age, history, co-medication and biomarkers of immunocompetence as confounding variables.
At least 4 weeks after completion of COVID19 vaccination
Correlation of IgG antibodies against SARS-CoV2 with time interval since last dose of rituximab
Time Frame: At least 4 weeks after completion of COVID19 vaccination
At least 4 weeks after completion of COVID19 vaccination
Correlation of IgG antibodies against SARS-CoV2 with cumulative dose of rituximab received.
Time Frame: At least 4 weeks after completion of COVID19 vaccination
At least 4 weeks after completion of COVID19 vaccination
T cell anti-SARS-CoV2 response after COVID19 vaccination
Time Frame: At least 4 weeks after completion of COVID19 vaccination
At least 4 weeks after completion of COVID19 vaccination
Correlation between IgG antibodies against SARS-CoV2 and B-cell counts, T-cell counts and total immunoglobulin levels
Time Frame: At least 4 weeks after completion of COVID19 vaccination
Multivariable regression models for IgG antibodies against SARS-CoV2 with B-cell counts, T-cell counts and total immunoglobulin levels as confounders.
At least 4 weeks after completion of COVID19 vaccination

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.
University Hospital Inselspital, Berne

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: Daniel Sidler, MD PhD, University Hospital Bern, Department of Nephrology and Hypertension

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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.
April 26, 2021

Primary Completion (Anticipated)

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.
August 30, 2021

Study Completion (Anticipated)

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.
October 31, 2021

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).
May 6, 2021

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.
May 6, 2021

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.
May 7, 2021

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.
June 2, 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.
May 27, 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.
May 1, 2021

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.
  • 4749

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.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings