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Published in: European Journal of Nuclear Medicine and Molecular Imaging 11/2021

01-10-2021 | Lymphoma | Original Article

Correlation between BNT162b2 mRNA Covid-19 vaccine-associated hypermetabolic lymphadenopathy and humoral immunity in patients with hematologic malignancy

Authors: Dan Cohen, Shir Hazut Krauthammer, Yael C. Cohen, Chava Perry, Irit Avivi, Yair Herishanu, Einat Even-Sapir

Published in: European Journal of Nuclear Medicine and Molecular Imaging | Issue 11/2021

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Abstract

Purpose

Vaccine-associated hypermetabolic lymphadenopathy (VAHL) is frequently observed on [18F]FDG PET-CT following BNT162b2 administration. Recent data suggest a prominent B cell germinal-center (GC) response elicited by mRNA vaccines in draining lymph nodes. Thus, in this study we aimed to explore the correlation between VAHL and humoral immunity as reflected by post-vaccination serologic testing and by comparing the incidence of VAHL between lymphoma patients treated recently with B cell depleting therapy and those that were not.

Methods

A total of 137 patients with hematologic malignancy that had post-vaccination [18F]FDG PET-CT were included (All-PET group), 86 received both vaccine doses before imaging (PET-2 group). Their VAHL status and grade on imaging were recorded. Among 102 lymphoma patients, 34 (33.3%) were treated during the year prior vaccination with anti-CD20 antibody containing therapy. A subgroup of 54 patients also underwent serologic testing 2–3 weeks after the booster dose, and their anti-spike titers were recorded and graded as well.

Results

The overall incidence of VAHL in patients with hematologic malignancy was 31.4%. The 34 lymphoma patients treated during the year prior vaccination with anti-CD20 antibody containing therapy had significantly lower rates of VAHL comparted with all other lymphoma patients (8.8 versus 41.2% in all-PET patients, Pv < 0.01). VAHL rates were 10% in patients with negative serology, 31.3% in patients with low anti-spike titers, and 72.2% in patients with high anti-spike titers. The positive predictive values of VAHL were 90 and 93.3% in all-PET and PET-2 patients, respectively. A positive statistically significant correlation was found between VAHL and serology ranks in All-PET patients (rs = 0.530, Pv < 0.001), and stronger correlation was found in PET-2 patients (rs = 0.642, Pv < 0.001).

Conclusion

VAHL on [18F]FDG PET-CT of patients with hematologic malignancy may reflect GC B cell proliferation and an effective humoral response elicited by BNT162b2 vaccine.
Literature
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go back to reference Monin-Aldama L, Laing AG, Munoz-Ruiz M, McKenzie DR, del Barrio ID, Alaguthurai T, et al. Interim results of the safety and immune-efficacy of 1 versus 2 doses of COVID-19 vaccine BNT162b2 for cancer patients in the context of the UK vaccine priority guidelines. medRxiv. 2021. https://doi.org/10.1101/2021.03.17.21253131. Monin-Aldama L, Laing AG, Munoz-Ruiz M, McKenzie DR, del Barrio ID, Alaguthurai T, et al. Interim results of the safety and immune-efficacy of 1 versus 2 doses of COVID-19 vaccine BNT162b2 for cancer patients in the context of the UK vaccine priority guidelines. medRxiv. 2021. https://​doi.​org/​10.​1101/​2021.​03.​17.​21253131.
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Metadata
Title
Correlation between BNT162b2 mRNA Covid-19 vaccine-associated hypermetabolic lymphadenopathy and humoral immunity in patients with hematologic malignancy
Authors
Dan Cohen
Shir Hazut Krauthammer
Yael C. Cohen
Chava Perry
Irit Avivi
Yair Herishanu
Einat Even-Sapir
Publication date
01-10-2021
Publisher
Springer Berlin Heidelberg
Published in
European Journal of Nuclear Medicine and Molecular Imaging / Issue 11/2021
Print ISSN: 1619-7070
Electronic ISSN: 1619-7089
DOI
https://doi.org/10.1007/s00259-021-05389-x

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