COVID-19 Vaccine Responses in PIDD Subjects

  • End date
    Sep 16, 2023
  • participants needed
  • sponsor
    Duke University
Updated on 20 April 2022
replacement therapy
genetic testing
immune globulin
genetic tests
Accepts healthy volunteers


The goal of our study is to assess the cellular immune responses of participants with antibody deficiency disease before and after immunization with SARS-CoV-2 mRNA vaccines.


Individuals with primary and secondary antibody immunodeficiency are at higher risk for severe COVID-19 disease. Humoral immunity is thought to be the predominant protection against COVID-19, however mRNA vaccines have been shown to elicit both antibody and cellular responses.

The goal of our study is to assess the cellular immune responses of participants with antibody deficiency diseases, including X-linked agammaglobulinemia (XLA), common variable immunodeficiency (CVID), and secondary hypogammaglobulinemia, before and after immunization with SARS-CoV-2 mRNA vaccines.

Our aim is to examine SARS-CoV-2 spike-specific T cell immune responses before and after immunization with mRNA vaccines in a cohort of individuals with antibody deficiencies compared to healthy volunteers. Our secondary objectives include (1) detecting cellular immune response differences between immunized and infected participants, (2) observing cellular immune responses over time, and (3) comparing clinical outcomes between vaccination, infection, and underlying antibody deficiency. The results will show whether antibody deficiency individuals can mount T cell responses to SARS-CoV-2 vaccination or infection, data that are expected to inform health policy of SARS-CoV-2 implementation in immunocompromised individuals. Findings will further provide foundation for larger cohort studies of SARS-CoV-2 vaccination in other immunocompromised populations.

Condition X-linked Agammaglobulinemia, XLA, Primary Immune Deficiency, CVID, Common Variable Immunodeficiency, Primary Antibody Deficiencies, Secondary Hypogammaglobulinemia
Clinical Study IdentifierNCT05321407
SponsorDuke University
Last Modified on20 April 2022


Yes No Not Sure

Inclusion Criteria

Diagnosis of antibody deficiency with confirmatory lab or genetic testing
Stable on immunoglobulin replacement therapy
Age >5 years and able to provide consent, or assent with parental consent if <18 years
Willing and able to receive the Pfizer BioNTech BNT162b2 mRNA or the Moderna mRNA-1273 vaccines

Exclusion Criteria

(1) History of other chronic disease with depressed immune function or immune suppressive
Clear my responses

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Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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