Covid19, HIV Seropositivity, Immunodeficiency, Vaccination Reaction
Conditions
Brief summary
The aim of this study is to identify both the humoral immunological response through the detection of induced antibodies and the cellular immunological response through the detection of interferon gamma production by functional CD4+ and CD8+ cells in different groups of immunocompromised patients. For antibody detection, LIAISON® SARS-CoV-2 TrimericS assay (DiaSorin) will be used and for the evaluation of cellular immunity - QuantiFERON SARS-CoV-2 assay (QIAGEN).
Detailed description
The national vaccination campaign against COVID-19 is ongoing and high risk patients are invited. Within the group of high risk patients, there are several groups of people who are for some reason immune-compromised and whose immune system is not functioning adequately. As vaccines against COVID-19 have become available in Europe as a matter of urgency, there are currently insufficient or no data available on the generation of post-vaccinal response in different groups of these immunocompromised patients. The theoretical assumption that the generation of post-vaccinal response in these patients is different from that in immunocompetent individuals is valid, as it has been shown for other vaccines, e.g. against influenza and pneumococcal disease, that the use of immunosuppressive treatments such as asrituximab, methotrexate and rituximab suppress the production of neutralising antibodies. It is known that vaccines against COVID-19 are also capable of inducing a clear functional cellular response in addition to neutralising antibody production, the modalities of which are also insufficiently or not known in these patients. As mentioned is the goal of VACCIm to identify both the humoral immunological response through the detection of induced antibodies and the cellular immunological response through the detection of interferon gamma production by functional CD4+ and CD8+ cells in different groups of immunocompromised patients. Within this prospective observational study, serum samples (for subsequent measurement with LIAISON® SARS-CoV-2 TrimericS assay) and lithium-heparin whole blood samples (for subsequent measurement with QuantiFERON SARS-CoV-2 assay) will be collected from control immune-competent individuals and immune-compromised patients within the following groups: * Common variable immunodeficiency disorders and primary immunodeficiency disorders * HIV-positive patients with CD4 \< 350 cells/mm3 * Immune-compromised patients in rheumatology, neurology and nephrology In order to assess both humoral and cellular responses as fully as possible, both measurements are performed at the following time points: T0: before (=prior) or at time of first dose of vaccine T1: 21-28 days after first dose of vaccine T2: at least 10 days after second dose of vaccine T3: after 3 months after second dose of vaccine T4: after 6 months from second dose of vaccine T5: after 12 months from second dose of vaccine
Interventions
DIAGNOSTIC_TESTBlood draw
Blood draw
Sponsors
University Hospital, Ghent
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SCREENING
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
16 Years to 100 Years
Healthy volunteers
Yes
Inclusion criteria
Following patient groups receiving the Pfizer vaccine * HIV-positive patients with CD4 \< 350 cellen/mm3 * Common variable immunodeficiency disorders en primary immunodeficiency disorders * Immune-compromised patients hospitalized at rheumatology/neurology/nephrology
Exclusion criteria
* patients receiving a different of vaccine
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Humoral immune response | prior or at the time of first dose of vaccine until 12 months after second dose of vaccine | Detection of Antibodies |
| Cellular immune response | prior or at the time of first dose of vaccine until 12 months after second dose of vaccine | DetectionINF-gamma by functional CD4+ and CD8+ cells |
Countries
Belgium
Outcome results
None listed