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Laquintana V, Mottini C, Marchesi F, Marcozzi B, Terrenato I, Sperandio E, de Latouliere L, Carrieri F, Pimpinelli F, Pontone M, Pellini R, Campo F, Conti L, Accetta C, Mandoj C, Petrone F, Di Bella O, Vujovic B, Morrone A, Compagnone M, Principato E, Pinto E, Papa E, Falcucci P, La Malfa A, Pallocca M, De Marco F, Piaggio G, Ciliberto G, Mengarelli A, di Martino S. Dynamics of humoral and cellular response to three doses of anti-SARS-CoV-2 BNT162b2 vaccine in patients with hematological malignancies and older subjects. Front Immunol 2024; 14:1221587. [PMID: 38343436 PMCID: PMC10853639 DOI: 10.3389/fimmu.2023.1221587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 12/27/2023] [Indexed: 02/15/2024] Open
Abstract
Background Few data are available about the durability of the response, the induction of neutralizing antibodies, and the cellular response upon the third dose of the anti-severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine in hemato-oncological patients. Objective To investigate the antibody and cellular response to the BNT162b2 vaccine in patients with hematological malignancy. Methods We measured SARS-CoV-2 anti-spike antibodies, anti-Omicron neutralizing antibodies, and T-cell responses 1 month after the third dose of vaccine in 93 fragile patients with hematological malignancy (FHM), 51 fragile not oncological subjects (FNO) aged 80-92, and 47 employees of the hospital (healthcare workers, (HW), aged 23-66 years. Blood samples were collected at day 0 (T0), 21 (T1), 35 (T2), 84 (T3), 168 (T4), 351 (T pre-3D), and 381 (T post-3D) after the first dose of vaccine. Serum IgG antibodies against S1/S2 antigens of SARS-CoV-2 spike protein were measured at every time point. Neutralizing antibodies were measured at T2, T3 (anti-Alpha), T4 (anti-Delta), and T post-3D (anti-Omicron). T cell response was assessed at T post-3D. Results An increase in anti-S1/S2 antigen antibodies compared to T0 was observed in the three groups at T post-3D. After the third vaccine dose, the median antibody level of FHM subjects was higher than after the second dose and above the putative protection threshold, although lower than in the other groups. The neutralizing activity of antibodies against the Omicron variant of the virus was tested at T2 and T post-3D. 42.3% of FHM, 80,0% of FNO, and 90,0% of HW had anti-Omicron neutralizing antibodies at T post-3D. To get more insight into the breadth of antibody responses, we analyzed neutralizing capacity against BA.4/BA.5, BF.7, BQ.1, XBB.1.5 since also for the Omicron variants, different mutations have been reported especially for the spike protein. The memory T-cell response was lower in FHM than in FNO and HW cohorts. Data on breakthrough infections and deaths suggested that the positivity threshold of the test is protective after the third dose of the vaccine in all cohorts. Conclusion FHM have a relevant response to the BNT162b2 vaccine, with increasing antibody levels after the third dose coupled with, although low, a T-cell response. FHM need repeated vaccine doses to attain a protective immunological response.
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Affiliation(s)
- Valentina Laquintana
- UOC Anatomy Pathology, Biobank IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Carla Mottini
- UOSD SAFU, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Francesco Marchesi
- UOSD Hematology and Stem Cell Transplant Unit, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Benedetta Marcozzi
- UOSD Clinical Trial Center, Biostatistic and Bionformatic, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Irene Terrenato
- UOSD Clinical Trial Center, Biostatistic and Bionformatic, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Eleonora Sperandio
- UOSD Clinical Trial Center, Biostatistic and Bionformatic, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Luisa de Latouliere
- UOSD SAFU, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Francesca Carrieri
- UOC D.I.T.R.A.R. IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Fulvia Pimpinelli
- UOSD of Microbiology and Virology, IRCCS San Gallicano Dermatological Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Martina Pontone
- UOSD of Microbiology and Virology, IRCCS San Gallicano Dermatological Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Raul Pellini
- UOC Otolaryngology Head and Neck Surgery, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Flaminia Campo
- UOC Otolaryngology Head and Neck Surgery, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Laura Conti
- UOSD Clinical Pathology, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Celeste Accetta
- UOC Anatomy Pathology, Biobank IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Chiara Mandoj
- UOSD Clinical Pathology, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Fabrizio Petrone
- UOC D.I.T.R.A.R. IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Ornella Di Bella
- Medical Direction, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Branka Vujovic
- Medical Direction, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Aldo Morrone
- Scientific Direction, IRCCS San Gallicano Dermatological Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | | | | | | | - Elena Papa
- UOSD Hematology and Stem Cell Transplant Unit, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Paolo Falcucci
- UOSD Hematology and Stem Cell Transplant Unit, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Antonia La Malfa
- Pharmacy Unit, IRCCS Regina Elena National Cancer Institute and San Gallicano Institute, Rome, Italy
| | - Matteo Pallocca
- UOSD Clinical Trial Center, Biostatistic and Bionformatic, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Federico De Marco
- UOSD SAFU, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Giulia Piaggio
- UOSD SAFU, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Gennaro Ciliberto
- Scientific Direction, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Andrea Mengarelli
- UOSD Hematology and Stem Cell Transplant Unit, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
| | - Simona di Martino
- UOC Anatomy Pathology, Biobank IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), Rome, Italy
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Lopez-Gomez A, Pelaez-Prestel HF, Juarez I. Approaches to evaluate the specific immune responses to SARS-CoV-2. Vaccine 2023; 41:6434-6443. [PMID: 37770298 DOI: 10.1016/j.vaccine.2023.09.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 07/12/2023] [Accepted: 09/19/2023] [Indexed: 09/30/2023]
Abstract
The SARS-CoV-2 pandemic has a huge impact on public health and global economy, meaning an enormous scientific, political, and social challenge. Studying how infection or vaccination triggers both cellular and humoral responses is essential to know the grade and length of protection generated in the population. Nowadays, scientists and authorities around the world are increasingly concerned about the arrival of new variants, which have a greater spread, due to the high mutation rate of this virus. The aim of this review is to summarize the different techniques available for the study of the immune responses after exposure or vaccination against SARS-CoV-2, showing their advantages and limitations, and proposing suitable combinations of different techniques to achieve extensive information in these studies. We wish that the information provided here will helps other scientists in their studies of the immune response against SARS-CoV-2 after vaccination with new vaccine candidates or infection with upcoming variants.
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Affiliation(s)
- Ana Lopez-Gomez
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Hector F Pelaez-Prestel
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.
| | - Ignacio Juarez
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
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Hall VG, Teh BW. COVID-19 Vaccination in Patients With Cancer and Patients Receiving HSCT or CAR-T Therapy: Immune Response, Real-World Effectiveness, and Implications for the Future. J Infect Dis 2023; 228:S55-S69. [PMID: 37539765 PMCID: PMC10401617 DOI: 10.1093/infdis/jiad174] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023] Open
Abstract
Patients with cancer demonstrate an increased vulnerability for infection and severe disease by SARS-CoV-2, the causative agent of COVID-19. Risk factors for severe COVID-19 include comorbidities, uncontrolled disease, and current line of treatment. Although COVID-19 vaccines have afforded some level of protection against infection and severe disease among patients with solid tumors and hematologic malignancies, decreased immunogenicity and real-world effectiveness have been observed among this population compared with healthy individuals. Characterizing and understanding the immune response to increasing doses or differing schedules of COVID-19 vaccines among patients with cancer is important to inform clinical and public health practices. In this article, we review SARS-CoV-2 susceptibility and immune responses to COVID-19 vaccination in patients with solid tumors, hematologic malignancies, and those receiving hematopoietic stem cell transplant or chimeric-antigen receptor T-cell therapy.
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Affiliation(s)
- Victoria G Hall
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Benjamin W Teh
- Correspondence: Benjamin W. Teh, MBBS, PhD, Sir Peter MacCallum Department of Oncology, University of Melbourne and Department of Infectious Diseases, Peter MacCallum Cancer Centre, 305 Grattan Street, Melbourne 3000, Victoria, Australia (); Victoria G. Hall, MBBS, MPH, University of Melbourne and Peter MacCallum Cancer Centre, Melbourne, VIC, Australia ()
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Lasagna A, Cassaniti I, Arena F, Bergami F, Percivalle E, Comolli G, Sarasini A, Ferrari A, Cicognini D, Schiavo R, Lo Cascio G, Pedrazzoli P, Baldanti F. Persistence of Immune Response Elicited by Three Doses of mRNA Vaccine against SARS-CoV-2 in a Cohort of Patients with Solid Tumors: A One-Year Follow-Up. Int J Mol Sci 2023; 24:ijms24076731. [PMID: 37047704 PMCID: PMC10095115 DOI: 10.3390/ijms24076731] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/29/2023] [Accepted: 04/03/2023] [Indexed: 04/08/2023] Open
Abstract
The role and durability of the immunogenicity of the BNT162b2 mRNA vaccine against severe acute respiratory virus 2 (SARS-CoV-2), in cancer patients one year after receiving the third dose have to be elucidated. We have prospectively evaluated the long-term immunogenicity of the third dose of the SARS-CoV-2 BNT162b2 mRNA vaccine in 55 patients undergoing active treatment. Neutralizing antibody (NT Ab) titers against Omicron variants and total anti-trimeric S IgG levels were measured one year after the third dose. Heparinized whole-blood samples were used for the assessment of the SARS-CoV-2 interferon-γ release assay (IGRA). Thirty-seven patients (67.3%) showed positive total anti-trimeric S IgG one year after the third dose. Looking at the T-cell response against the spike protein, the frequency of responder patients did not decrease significantly between six and twelve months after the third dose. Finally, less than 20% of cancer patients showed an undetectable NT Ab titer against BA.1 and BA.5 variants of concern (VOCs). Underlying therapies seem to not affect the magnitude or frequency of the immune response. Our work underlines the persistence of humoral and cellular immune responses against BNT162b2 in a cohort of cancer patients one year after receiving the third dose, regardless of the type of underlying therapy.
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Affiliation(s)
- Angioletta Lasagna
- Medical Oncology Unit, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Irene Cassaniti
- Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Francesca Arena
- Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Federica Bergami
- Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Elena Percivalle
- Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Giuditta Comolli
- Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Antonella Sarasini
- Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Alessandro Ferrari
- Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Daniela Cicognini
- Medical Oncology Unit, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Roberta Schiavo
- Microbiology Unit, Hospital Guglielmo da Saliceto, 29121 Piacenza, Italy
| | - Giuliana Lo Cascio
- Microbiology Unit, Hospital Guglielmo da Saliceto, 29121 Piacenza, Italy
| | - Paolo Pedrazzoli
- Medical Oncology Unit, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
- Department of Internal Medicine and Medical Therapy, University of Pavia, 27100 Pavia, Italy
| | - Fausto Baldanti
- Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
- Department of Clinical, Surgical, Diagnostics and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy
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Tan TT, Ng HJ, Young B, Khan BA, Shetty V, Azmi N, Clissold S. Effectiveness of vaccination against SARS-CoV-2 and the need for alternative preventative approaches in immunocompromised individuals: a narrative review of systematic reviews. Expert Rev Vaccines 2023; 22:341-365. [PMID: 36920116 DOI: 10.1080/14760584.2023.2191716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
INTRODUCTION Vaccination against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), including administration of booster doses, continues to be the most effective method for controlling COVID-19-related complications including progression to severe illness and death.However, there is mounting evidence that more needs to be done to protect individuals with compromised immune function. AREAS COVERED Here, we review the effectiveness of COVID-19 vaccination in immunocompromised patients, including those with primary immunodeficiencies, HIV, cancer (including hematological malignancies), solid organ transplant recipients and chronic kidney disease, as reported in systematic reviews/meta-analyses published over a 12-month period in PubMed. Given the varied responses to vaccination patients with compromised immune function, a major goal of this analysis was to try to identify specific risk-factors related to vaccine failure. EXPERT OPINION COVID-19 remains a global problem, with new variants of concern emerging at regular intervals. There is an ongoing need for optimal vaccine strategies to combat the pandemic. In addition, alternative treatment approaches are needed for immunocompromised patients who may not mount an adequate immune response to current COVID-19 vaccines. Identification of high-risk patients, and the introduction of newer antiviral approaches such as monoclonal antibodies, will offer physicians therapeutic options for such vulnerable individuals.
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Affiliation(s)
- Thuan Tong Tan
- Department of Infectious Diseases, Singapore General Hospital, Singapore, Singapore
| | - Heng Joo Ng
- Department of Haematology, Singapore General Hospital, Singapore, Singapore
| | - Barnaby Young
- Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore
| | - Behram Ali Khan
- Medical Services Department, The National Kidney Foundation, Singapore and Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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THEME: "Vaccines and Vaccine Adjuvants/Immunomodulators for Infectious Diseases". Vaccines (Basel) 2023; 11:vaccines11020383. [PMID: 36851261 PMCID: PMC9965514 DOI: 10.3390/vaccines11020383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 01/12/2023] [Indexed: 02/11/2023] Open
Abstract
The discovery of vaccines has enabled the successful prevention of many deadly infectious diseases, decreased the overall mortality rate, and improved life expectancy worldwide [...].
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Hernandez SPA, Hersby DS, Munk KK, Tamhane T, Trubach D, Tagliamonte M, Buonaguro L, Gang AO, Hadrup SR, Saini SK. Three doses of BNT162b2 COVID-19 mRNA vaccine establish long-lasting CD8 + T cell immunity in CLL and MDS patients. Front Immunol 2023; 13:1035344. [PMID: 36703960 PMCID: PMC9873231 DOI: 10.3389/fimmu.2022.1035344] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 12/20/2022] [Indexed: 01/11/2023] Open
Abstract
Patients with hematological malignancies are prioritized for COVID-19 vaccine due to their high risk for severe SARS-CoV-2 infection-related disease and mortality. To understand T cell immunity, its long-term persistence, and its correlation with antibody response, we evaluated the BNT162b2 COVID-19 mRNA vaccine-specific immune response in chronic lymphocytic leukemia (CLL) and myeloid dysplastic syndrome (MDS) patients. Longitudinal analysis of CD8+ T cells using DNA-barcoded peptide-MHC multimers covering the full SARS-CoV-2 Spike-protein (415 peptides) showed vaccine-specific T cell activation and persistence of memory T cells up to six months post-vaccination. Surprisingly, a higher frequency of vaccine-induced antigen-specific CD8+ T cells was observed in the patient group compared to a healthy donor group. Furthermore, and importantly, immunization with the second booster dose significantly increased the frequency of antigen-specific CD8+ T cells as well as the total number of T cell specificities. Altogether 59 BNT162b2 mRNA vaccine-derived immunogenic responses were identified, of which 23 established long-term CD8+ T cell memory response with a strong immunodominance for NYNYLYRLF (HLA-A24:02) and YLQPRTFLL (HLA-A02:01) epitopes. In summary, we mapped the vaccine-induced antigen-specific CD8+ T cells and showed a booster-specific activation and enrichment of memory T cells that could be important for long-term disease protection in this patient group.
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Affiliation(s)
- Susana Patricia Amaya Hernandez
- Department of Health Technology, Section of Experimental and Translational Immunology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Ditte Stampe Hersby
- Department of Hematology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Kamilla Kjærgaard Munk
- Department of Health Technology, Section of Experimental and Translational Immunology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Tripti Tamhane
- Department of Health Technology, Section of Experimental and Translational Immunology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Darya Trubach
- Department of Health Technology, Section of Experimental and Translational Immunology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Maria Tagliamonte
- Innovative Immunological Models Unit, National Cancer Institute Pascale Foundation – IRCCS, Napoli, Italy
| | - Luigi Buonaguro
- Innovative Immunological Models Unit, National Cancer Institute Pascale Foundation – IRCCS, Napoli, Italy
| | - Anne Ortved Gang
- Department of Hematology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Sine Reker Hadrup
- Department of Health Technology, Section of Experimental and Translational Immunology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Sunil Kumar Saini
- Department of Health Technology, Section of Experimental and Translational Immunology, Technical University of Denmark, Kongens Lyngby, Denmark,*Correspondence: Sunil Kumar Saini,
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Song R, Liu L, Pan Q, Liu J, Tan J, Deng J, Deng Q, Lin Z, Chen M, Peng M, Ren H, Ming J. Short-term safety and immunogenicity of inactivated and peptide-based SARS-CoV-2 vaccines in patients with endocrine-related cancer. Front Immunol 2022; 13:1028246. [DOI: 10.3389/fimmu.2022.1028246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/06/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundThe aim of this study was to explore the short-term safety and immunogenicity of inactivated and peptide-based SARS-CoV-2 vaccines in patients with endocrine-related cancer (ER).MethodsEighty-eight patients with ER cancer and 82 healthy controls who had completed a full course of inactivated or peptide-based SARS-CoV-2 vaccines were recruited. Adverse events (AEs) were recorded. Responses to receptor-binding domain IgG antibody (anti-RBD-IgG), neutralizing antibodies (NAbs) and RBD+ memory B cells (MBCs) were evaluated.ResultsApproximately 26.14% (23/88) of patients with ER cancer reported AEs within 7 days, which was comparable to that reported by healthy controls (24.39%, 20/82). Both the overall seroprevalence of anti-RBD-IgG and NAbs was obviously lower in the cancer group (70.45% vs. 86.59%, P < 0.05; 69.32% vs. 82.93%, P < 0.05, respectively). Anti-RBD-IgG and NAbs titers exhibited similar results, and dropped gradually over time. Patients with ongoing treatment had an attenuated immune response, especially in patients receiving active chemotherapy. The frequency of overall RBD+ MBCs was similar between the two groups, but the percentage of active MBCs was remarkably reduced in patients with ER cancer. Unlike antibody titers, MBCs responses were relatively constant over time.ConclusionInactivated and peptide-based COVID-19 vaccines were well tolerated, but with lower immunogenicity for ER cancer patients. More intensive antibody monitoring and timely booster immunization is recommended for patients with ER cancer presenting disordered subpopulations of RBD+ MBCs.
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