Sustained cell-mediated but not humoral responses in rituximab-treated rheumatic patients after vaccination against SARS-CoV-2

© The Author(s) 2023. Published by Oxford University Press on behalf of the British Society for Rheumatology..

OBJECTIVES: B-cell depleting monoclonal antibodies are associated with increased COVID-19 severity and impaired immune response to vaccination. We aimed to assess the humoral and cell mediated (CMI) immune response after SARS-CoV-2 vaccination in rituximab (RTX)-treated rheumatic patients.

METHODS: Serum and whole blood samples were collected from RTX-treated rheumatic patients 3-6 months after last vaccination against SARS-CoV-2. Serum was tested by ELISA for quantitative detection of anti-spike SARS-CoV-2 IgG. Cell-mediated variant-specific SARS-CoV-2 immunity (CMI) was assessed by interferon-γ release assay Covi-FERON FIA. Patients were interviewed for breakthrough COVID-19 infection (BTI) 3 months post sampling.

RESULTS: Sixty patients were studied after a median (IQR) of 179 (117-221.5) days from last vaccine to sampling. Forty (66.7%) patients had positive Covi-FERON and 23 (38.3%) had detectable anti-spike IgG. Covi-FERON positive patients had lower median RTX cumulative dose [6 (4-10.75) vs 11 (6.75-14.75) grams, (P = 0.019)]. Patients with positive anti-spike IgG had received fewer RTX cycles [2 (2-4) vs 6 (4-8), P = 0.002] and cumulative dose [4 (3-7) vs 10 (6.25-13) grams, P = 0.002] and had shorter time from last vaccination to sampling [140 (76-199) vs 192 (128-230) days, P = 0.047]. Thirty-seven percent were positive only for Covi-FERON and 7% only for anti-spike IgG. Twenty (33.3%) BTI occurred post sampling, exclusively during Omicron variant predominance. The proportion of patients with CMI response against Delta variant was lower in patients who experienced BTI (25% vs 55%, P = 0.03).

CONCLUSIONS: Four out of ten RTX-treated vaccinated patients show lasting cell-mediated immune response despite undetectable anti-spike antibodies. Cumulative RTX dose affects both humoral and cell-mediated responses to SARS-CoV-2 vaccines. Cell-mediated immune responses call for attention as a vaccine efficacy marker against SARS-CoV-2.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:63

Enthalten in:

Rheumatology (Oxford, England) - 63(2024), 2 vom: 01. Feb., Seite 534-541

Sprache:

Englisch

Beteiligte Personen:

Thomas, Κonstantinos [VerfasserIn]
Grigoropoulos, Ioannis [VerfasserIn]
Alexopoulou, Panagiota [VerfasserIn]
Karofylakis, Emmanouil [VerfasserIn]
Galani, Irene [VerfasserIn]
Papadopoulou, Kyriaki Korina [VerfasserIn]
Tsiavou, Anastasia [VerfasserIn]
Ntourou, Aliki [VerfasserIn]
Mavrou, Eleftheria [VerfasserIn]
Qevani, Irina [VerfasserIn]
Katsimbri, Pelagia [VerfasserIn]
Koutsianas, Christos [VerfasserIn]
Mavrea, Evgenia [VerfasserIn]
Vassilopoulos, Dimitrios [VerfasserIn]
Pournaras, Spyros [VerfasserIn]
Tsiodras, Sotirios [VerfasserIn]
Boumpas, Dimitrios [VerfasserIn]
Antoniadou, Anastasia [VerfasserIn]

Links:

Volltext

Themen:

4F4X42SYQ6
Antibodies, Viral
Breakthrough infection
COVID-19 Vaccines
Cell-mediated immunity
Immunoglobulin G
Journal Article
Rituximab
SARS-CoV-2

Anmerkungen:

Date Completed 05.02.2024

Date Revised 05.02.2024

published: Print

Citation Status MEDLINE

doi:

10.1093/rheumatology/kead236

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM357303989