Description Module
The Description Module contains narrative descriptions of the clinical trial, including a brief summary and detailed description. These descriptions provide important information about the study's purpose, methodology, and key details in language accessible to both researchers and the general public.
Description Module path is as follows:
Study -> Protocol Section -> Description Module
Description Module
Ignite Creation Date:
2025-12-25 @ 5:19 AM
Ignite Modification Date:
2025-12-25 @ 5:19 AM
NCT ID:
NCT05633927
Brief Summary:
Prospective, non-equality, cohort study, where investigators propose to analyze humoral and cellular immunity after two doses of SARS-CoV-2 RNA vaccines in HIV-infected participants severely immunosuppressed.
A total of 92 HIV-infected subjects over 18 years old with ≤200 CD4/μl (experimental group; n=46) and ≥ 350 CD4/μl (as control group; n=46) who have completed two doses vaccination against SARS-CoV-2 will be included in the study.
Primary Objectives:
* To analyze the percentage of participants with SARS-CoV-2-specific IgG after 1, 6, and 12 months after vaccination in subjects with ≤200 vs ≥350 CD4/μL by electrochemiluminescence immunoassay (Elecsys® Anti-SARS-CoV-2. Roche Diagnostics).
* To analyze the percentage of subjects with specific T and memory B lymphocyte response against SARS-CoV-2 after 1, 6, and 12 months after vaccination with \<200 vs ≥350 CD4/μL. Multiparametric flow cytometry in peripheral blood mononuclear cells (PBMCs) will be performed to detect the production of cytokines (IL-2, TNF-α and IFN-γ), cytolytic (perforin and granzyme B) and degranulation (CD107a) molecules from T cells, as well as to identify memory B cells specific to SARS-CoV-2 IgG+.
Secondary Objectives: To analyze in participants with \<200 vs ≥350 CD4/μl after 1, 6, and 12 months after vaccination:
* Quantification of specific IgG titers against SARS-CoV-2
* The association of the T response to SARS-CoV-2 with humoral response parameters.
* The association of the T response against SARS-CoV-2 with other parameters of immune activation, inflammation and immunosenescence. The phenotypes of maturation (CD45RA and CD27), activation (HLA-DR and CD38), senescence (CD57+CD28-) and markers of immune exhaustion (TIGIT, LAG-3, TIM-3 and PD-1) in CD4 and CD8 lymphocytes T will be determined by multiparametric flow cytometry.
Study:
NCT05633927
Study Brief:
Protocol Section:
NCT05633927