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Benning L, Bartenschlager M, Kim H, Kälble F, Nusshag C, Buylaert M, Reichel P, Schaier M, Morath C, Zeier M, Schnitzler P, Bartenschlager R, Speer C. Live-virus serum neutralization after bivalent SARS-CoV-2 mRNA vaccination in hemodialysis patients. J Med Virol 2023; 95:e29303. [PMID: 38082556 DOI: 10.1002/jmv.29303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/09/2023] [Accepted: 11/25/2023] [Indexed: 12/18/2023]
Abstract
The development of bivalent booster vaccines addresses the ongoing evolution of the emerging B.1.1.529 (omicron) variant subtypes that are known to escape vaccine-induced neutralizing antibody response. Little is known about the immunogenicity and reactogenicity of bivalent mRNA vaccines in hemodialysis patients with impaired vaccine response. In this prospective, observational cohort study, we analyzed SARS-CoV-2 anti-S1 IgG, surrogate neutralizing antibodies (SNA), and live-virus neutralization against the SARS-CoV-2 wildtype and the BA.5 variant in 42 hemodialysis patients with and without prior SARS-CoV-2 infection before and after an additional fifth bivalent vaccine dose. Anti-S1 IgG and SNA were significantly higher in hemodialysis patients with prior infection than in patients without infection (p < 0.001 and p < 0.01, respectively). In patients without prior infection, both antibody levels increased, and live-virus neutralizing antibodies against the wildtype and the BA.5 variant were correspondingly significantly higher after bivalent booster vaccination (p < 0.001 for both). Conversely, in patients with prior infection, anti-S1 IgG and SNA did not alter significantly, and bivalent booster vaccination did not induce additional humoral immune response against the SARS-CoV-2 wildtype and the BA.5 variant. Thus, bivalent mRNA vaccines might increase humoral responses in hemodialysis patients without prior infection. Larger clinical trials are needed to help guide vaccination strategies in these immunocompromised individuals.
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Affiliation(s)
- Louise Benning
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Marie Bartenschlager
- Department of Infectious Diseases, Molecular Virology, University of Heidelberg, Heidelberg, Germany
| | - Heeyoung Kim
- Department of Infectious Diseases, Molecular Virology, University of Heidelberg, Heidelberg, Germany
| | - Florian Kälble
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Christian Nusshag
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Mirabel Buylaert
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Paula Reichel
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Matthias Schaier
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Christian Morath
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Martin Zeier
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Paul Schnitzler
- Department of Infectious Diseases, Virology, University of Heidelberg, Heidelberg, Germany
| | - Ralf Bartenschlager
- Department of Infectious Diseases, Molecular Virology, University of Heidelberg, Heidelberg, Germany
- German Center for Infection Research (DZIF), Heidelberg partner site, Heidelberg, Germany
- Division Virus-Associated Carcinogenesis, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Claudius Speer
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
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Speer C, Töllner M, Benning L, Bartenschlager M, Kim H, Nusshag C, Kälble F, Reineke M, Reichel P, Schnitzler P, Zeier M, Morath C, Schmitt W, Bergner R, Bartenschlager R, Lorenz HM, Schaier M. BA.1/BA.5 Immunogenicity, Reactogenicity, and Disease Activity after COVID-19 Vaccination in Patients with ANCA-Associated Vasculitis: A Prospective Observational Cohort Study. Viruses 2023; 15:1778. [PMID: 37632120 PMCID: PMC10458303 DOI: 10.3390/v15081778] [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: 07/07/2023] [Revised: 08/13/2023] [Accepted: 08/20/2023] [Indexed: 08/27/2023] Open
Abstract
Emerging omicron subtypes with immune escape lead to inadequate vaccine response with breakthrough infections in immunocompromised individuals such as Anti-neutrophil Cytoplasmic Antibody (ANCA)-associated vasculitis (AAV) patients. As AAV is considered an orphan disease, there are still limited data on SARS-CoV-2 vaccination and prospective studies that have focused exclusively on AAV patients are lacking. In addition, there are safety concerns regarding the use of highly immunogenic mRNA vaccines in autoimmune diseases, and further studies investigating reactogenicity are urgently needed. In this prospective observational cohort study, we performed a detailed characterization of neutralizing antibody responses against omicron subtypes and provided a longitudinal assessment of vaccine reactogenicity and AAV disease activity. Different vaccine doses were generally well tolerated and no AAV relapses occurred during follow-up. AAV patients had significantly lower anti-S1 IgG and surrogate-neutralizing antibodies after first, second, and third vaccine doses as compared to healthy controls, respectively. Live-virus neutralization assays against omicron subtypes BA.1 and BA.5 revealed that previous SARS-CoV-2 vaccines result in an inadequate neutralizing immune response in immunocompromised AAV patients. These data demonstrate that new vaccination strategies including adapted mRNA vaccines against epitopes of emerging variants are needed to help protect highly vulnerable individuals such as AAV patients.
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Affiliation(s)
- Claudius Speer
- Department of Nephrology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.T.); (L.B.); (C.N.); (F.K.); (M.R.); (P.R.); (M.Z.); (C.M.); (M.S.)
- Molecular Medicine Partnership Unit Heidelberg, EMBL, 69120 Heidelberg, Germany
| | - Maximilian Töllner
- Department of Nephrology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.T.); (L.B.); (C.N.); (F.K.); (M.R.); (P.R.); (M.Z.); (C.M.); (M.S.)
| | - Louise Benning
- Department of Nephrology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.T.); (L.B.); (C.N.); (F.K.); (M.R.); (P.R.); (M.Z.); (C.M.); (M.S.)
| | - Marie Bartenschlager
- Department of Infectious Diseases, Molecular Virology, Center for Integrative Infectious Disease Research, Medical Faculty Heidelberg, Heidelberg University, 68167 Heidelberg, Germany; (M.B.); (H.K.); (R.B.)
| | - Heeyoung Kim
- Department of Infectious Diseases, Molecular Virology, Center for Integrative Infectious Disease Research, Medical Faculty Heidelberg, Heidelberg University, 68167 Heidelberg, Germany; (M.B.); (H.K.); (R.B.)
| | - Christian Nusshag
- Department of Nephrology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.T.); (L.B.); (C.N.); (F.K.); (M.R.); (P.R.); (M.Z.); (C.M.); (M.S.)
| | - Florian Kälble
- Department of Nephrology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.T.); (L.B.); (C.N.); (F.K.); (M.R.); (P.R.); (M.Z.); (C.M.); (M.S.)
| | - Marvin Reineke
- Department of Nephrology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.T.); (L.B.); (C.N.); (F.K.); (M.R.); (P.R.); (M.Z.); (C.M.); (M.S.)
| | - Paula Reichel
- Department of Nephrology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.T.); (L.B.); (C.N.); (F.K.); (M.R.); (P.R.); (M.Z.); (C.M.); (M.S.)
| | - Paul Schnitzler
- Department of Infectious Diseases, Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany;
| | - Martin Zeier
- Department of Nephrology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.T.); (L.B.); (C.N.); (F.K.); (M.R.); (P.R.); (M.Z.); (C.M.); (M.S.)
| | - Christian Morath
- Department of Nephrology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.T.); (L.B.); (C.N.); (F.K.); (M.R.); (P.R.); (M.Z.); (C.M.); (M.S.)
| | | | - Raoul Bergner
- Department of Internal Medicine A, Clinical Center Ludwigshafen, 67071 Ludwigshafen, Germany;
| | - Ralf Bartenschlager
- Department of Infectious Diseases, Molecular Virology, Center for Integrative Infectious Disease Research, Medical Faculty Heidelberg, Heidelberg University, 68167 Heidelberg, Germany; (M.B.); (H.K.); (R.B.)
- German Center for Infection Research (DZIF), Heidelberg Partner Site, 69120 Heidelberg, Germany
- Division Virus-Associated Carcinogenesis, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Hanns-Martin Lorenz
- Division of Rheumatology, Department of Medicine V, University of Heidelberg, 69120 Heidelberg, Germany;
| | - Matthias Schaier
- Department of Nephrology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (M.T.); (L.B.); (C.N.); (F.K.); (M.R.); (P.R.); (M.Z.); (C.M.); (M.S.)
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Benning L, Morath C, Kühn T, Bartenschlager M, Kim H, Beimler J, Buylaert M, Nusshag C, Kälble F, Reineke M, Töllner M, Schaier M, Klein K, Blank A, Schnitzler P, Zeier M, Süsal C, Bartenschlager R, Tran TH, Speer C. Humoral response to SARS-CoV-2 mRNA vaccination in previous non-responder kidney transplant recipients after short-term withdrawal of mycophenolic acid. Front Med (Lausanne) 2022; 9:958293. [PMID: 36059830 PMCID: PMC9433830 DOI: 10.3389/fmed.2022.958293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/25/2022] [Indexed: 11/13/2022] Open
Abstract
Seroconversion rates after COVID-19 vaccination are significantly lower in kidney transplant recipients compared to healthy cohorts. Adaptive immunization strategies are needed to protect these patients from COVID-19. In this prospective observational cohort study, we enrolled 76 kidney transplant recipients with no seroresponse after at least three COVID-19 vaccinations to receive an additional mRNA-1273 vaccination (full dose, 100 μg). Mycophenolic acid was withdrawn in 43 selected patients 5–7 days prior to vaccination and remained paused for 4 additional weeks after vaccination. SARS-CoV-2-specific antibodies and neutralization of the delta and omicron variants were determined using a live-virus assay 4 weeks after vaccination. In patients with temporary mycophenolic acid withdrawal, donor-specific anti-HLA antibodies and donor-derived cell-free DNA were monitored before withdrawal and at follow-up. SARS-CoV-2 specific antibodies significantly increased in kidney transplant recipients after additional COVID-19 vaccination. The effect was most pronounced in individuals in whom mycophenolic acid was withdrawn during vaccination. Higher SARS-CoV-2 specific antibody titers were associated with better neutralization of SARS-CoV-2 delta and omicron variants. In patients with short-term withdrawal of mycophenolic acid, graft function and donor-derived cell-free DNA remained stable. No acute rejection episode occurred during short-term follow-up. However, resurgence of prior anti-HLA donor-specific antibodies was detected in 7 patients.
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Affiliation(s)
- Louise Benning
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
- *Correspondence: Louise Benning,
| | - Christian Morath
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Tessa Kühn
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Marie Bartenschlager
- Department of Infectious Diseases, Molecular Virology, University of Heidelberg, Heidelberg, Germany
| | - Heeyoung Kim
- Department of Infectious Diseases, Molecular Virology, University of Heidelberg, Heidelberg, Germany
| | - Jörg Beimler
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Mirabel Buylaert
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Christian Nusshag
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Florian Kälble
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Marvin Reineke
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | | | - Matthias Schaier
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Katrin Klein
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Antje Blank
- Department of Clinical Pharmacology and Pharmacoepidemiology, University of Heidelberg, Heidelberg, Germany
- German Center for Infection Research, Partner Site Heidelberg, Heidelberg, Germany
| | - Paul Schnitzler
- Department of Virology, University of Heidelberg, Heidelberg, Germany
| | - Martin Zeier
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Caner Süsal
- Transplant Immunology Research Center of Excellence, Koç University Hospital, Istanbul, Turkey
| | - Ralf Bartenschlager
- Department of Infectious Diseases, Molecular Virology, University of Heidelberg, Heidelberg, Germany
- German Center for Infection Research, Partner Site Heidelberg, Heidelberg, Germany
- Division Virus-Associated Carcinogenesis, German Cancer Research Center, Heidelberg, Germany
| | - Thuong Hien Tran
- Institute of Immunology, University of Heidelberg, Heidelberg, Germany
| | - Claudius Speer
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
- Department of Molecular Medicine Partnership Unit Heidelberg, European Molecular Biology Laboratory, Heidelberg, Germany
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Benning L, Morath C, Bartenschlager M, Kim H, Reineke M, Beimler J, Buylaert M, Nusshag C, Kälble F, Reichel P, Töllner M, Schaier M, Klein K, Benes V, Rausch T, Rieger S, Stich M, Tönshoff B, Weidner N, Schnitzler P, Zeier M, Süsal C, Hien Tran T, Bartenschlager R, Speer C. Neutralizing antibody response against the B.1.617.2 (delta) and the B.1.1.529 (omicron) variants after a third mRNA SARS-CoV-2 vaccine dose in kidney transplant recipients. Am J Transplant 2022; 22:1873-1883. [PMID: 35384272 PMCID: PMC9111366 DOI: 10.1111/ajt.17054] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/24/2022] [Accepted: 04/01/2022] [Indexed: 01/25/2023]
Abstract
Seroconversion after COVID-19 vaccination is impaired in kidney transplant recipients. Emerging variants of concern such as the B.1.617.2 (delta) and the B.1.1.529 (omicron) variants pose an increasing threat to these patients. In this observational cohort study, we measured anti-S1 IgG, surrogate neutralizing, and anti-receptor-binding domain antibodies three weeks after a third mRNA vaccine dose in 49 kidney transplant recipients and compared results to 25 age-matched healthy controls. In addition, vaccine-induced neutralization of SARS-CoV-2 wild-type, the B.1.617.2 (delta), and the B.1.1.529 (omicron) variants was assessed using a live-virus assay. After a third vaccine dose, anti-S1 IgG, surrogate neutralizing, and anti-receptor-binding domain antibodies were significantly lower in kidney transplant recipients compared to healthy controls. Only 29/49 (59%) sera of kidney transplant recipients contained neutralizing antibodies against the SARS-CoV-2 wild-type or the B.1.617.2 (delta) variant and neutralization titers were significantly reduced compared to healthy controls (p < 0.001). Vaccine-induced cross-neutralization of the B.1.1.529 (omicron) variants was detectable in 15/35 (43%) kidney transplant recipients with seropositivity for anti-S1 IgG, surrogate neutralizing, and/or anti-RBD antibodies. Neutralization of the B.1.1.529 (omicron) variants was significantly reduced compared to neutralization of SARS-CoV-2 wild-type or the B.1.617.2 (delta) variant for both, kidney transplant recipients and healthy controls (p < .001 for all).
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Affiliation(s)
- Louise Benning
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Christian Morath
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Marie Bartenschlager
- Department of Infectious Diseases, Molecular Virology, University of Heidelberg, Heidelberg, Germany
| | - Heeyoung Kim
- Department of Infectious Diseases, Molecular Virology, University of Heidelberg, Heidelberg, Germany
| | - Marvin Reineke
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Jörg Beimler
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Mirabel Buylaert
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Christian Nusshag
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Florian Kälble
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Paula Reichel
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | | | - Matthias Schaier
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Katrin Klein
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Vladimir Benes
- Genomics Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Tobias Rausch
- Genomics Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Susanne Rieger
- Department of Pediatrics I, University Children’s Hospital Heidelberg, Heidelberg, Germany
| | - Maximilian Stich
- Department of Pediatrics I, University Children’s Hospital Heidelberg, Heidelberg, Germany
| | - Burkhard Tönshoff
- Department of Pediatrics I, University Children’s Hospital Heidelberg, Heidelberg, Germany
| | - Niklas Weidner
- Department of Virology, University of Heidelberg, Heidelberg, Germany
| | - Paul Schnitzler
- Department of Virology, University of Heidelberg, Heidelberg, Germany
| | - Martin Zeier
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Caner Süsal
- Institute of Immunology, University of Heidelberg, Heidelberg, Germany
- Transplant Immunology Research Center of Excellence, Koç University Hospital, Istanbul, Turkey
| | - Thuong Hien Tran
- Institute of Immunology, University of Heidelberg, Heidelberg, Germany
| | - Ralf Bartenschlager
- Department of Infectious Diseases, Molecular Virology, University of Heidelberg, Heidelberg, Germany
- German Center for Infection Research, Heidelberg, Germany
- Division Virus-Associated Carcinogenesis, German Cancer Research Center, Heidelberg, Germany
| | - Claudius Speer
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
- Department of Molecular Medicine Partnership Unit Heidelberg, European Molecular Biology Laboratory, Heidelberg, Germany
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Firinu D, Fenu G, Sanna G, Costanzo GA, Perra A, Campagna M, Littera R, Locci C, Marongiu A, Cappai R, Melis M, Orrù G, Del Giacco S, Coghe F, Manzin A, Chessa L. Evaluation of humoral and cellular response to third dose of BNT162b2 mRNA COVID-19 vaccine in patients treated with B-cell depleting therapy. J Autoimmun 2022; 131:102848. [PMID: 35714496 PMCID: PMC9189114 DOI: 10.1016/j.jaut.2022.102848] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/03/2022] [Accepted: 06/05/2022] [Indexed: 12/25/2022]
Abstract
OBJECTIVE to investigate the responses to mRNA COVID-19 vaccines in a cohort of immunosuppressed patients affected by immune-mediated inflammatory diseases (IMID). METHODS we have measured humoral and cellular immunity using quantitative IgG anti-SARS-CoV-2 Spike antibody (anti-S-IgG), neutralization assays and specific interferon-gamma (IFN-g) release assay (IGRA) before and after the third dose of BNT162b2. The response of those on anti-CD20 (n = 18) was then compared with healthy controls (HC, n = 18) and IMID naïve to anti-CD20 drugs (n = 13). RESULTS a third BNT162b2 dose is highly immunogenic in IMID patients naïve to anti-CD20, as 100% of the subjects seroconverted compared to the 55% in anti-CD20. The rate of IGRA response was of 79% in anti-CD20, 50% in IMID naïve to anti-CD20, 100% in HC. Among those who have seroconverted, IMID patients had significantly reduced anti-S-IgG and neutralization titers compared to HC, whereas no significant difference was observed when comparing anti-CD20 and HC. Furthermore, 13% of anti-CD20 and 7.7% of IMID were simultaneously negative for both neutralizing antibodies and IGRA after three doses. CONCLUSION these data draw attention to the immunogenicity of COVID-19 vaccination in treated IMID, taking specific groups into consideration for vaccination program.
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Affiliation(s)
- Davide Firinu
- Department of Medical Sciences and Public Health, University of Cagliari. and Unit of Internal Medicine, Policlinico Universitario - AOU di Cagliari, Azienda Ospedaliero Universitaria, SS 554-Bivio Sestu, 09042, Monserrato, CA, Italy.
| | - Giuseppe Fenu
- Department of Neuroscience, ARNAS Brotzu, 09100, Cagliari, Italy
| | - Giuseppina Sanna
- Microbiology and Virology Unit, Department of Biomedical Sciences, University of Cagliari, 09042, Monserrato, Italy
| | - Giulia A Costanzo
- Department of Medical Sciences and Public Health, University of Cagliari. and Unit of Internal Medicine, Policlinico Universitario - AOU di Cagliari, Azienda Ospedaliero Universitaria, SS 554-Bivio Sestu, 09042, Monserrato, CA, Italy
| | - Andrea Perra
- Oncology and Molecular Pathology Unit, Department of Biomedical Sciences, University of Cagliari, 09100, Cagliari, Italy
| | - Marcello Campagna
- Department of Medical Sciences and Public Health, University of Cagliari. and Unit of Internal Medicine, Policlinico Universitario - AOU di Cagliari, Azienda Ospedaliero Universitaria, SS 554-Bivio Sestu, 09042, Monserrato, CA, Italy
| | - Roberto Littera
- Medical Genetics, Department of Medical Sciences and Public Health, University of Cagliari, 09100, Cagliari, Italy
| | - Carlotta Locci
- Department of Medical Sciences and Public Health, University of Cagliari. and Unit of Internal Medicine, Policlinico Universitario - AOU di Cagliari, Azienda Ospedaliero Universitaria, SS 554-Bivio Sestu, 09042, Monserrato, CA, Italy
| | - Alessandra Marongiu
- Microbiology and Virology Unit, Department of Biomedical Sciences, University of Cagliari, 09042, Monserrato, Italy
| | - Riccardo Cappai
- Laboratory Clinical Chemical Analysis and Microbiology, University Hospital of Cagliari, 09042, Monserrato, Italy
| | - Maurizio Melis
- Department of Neuroscience, ARNAS Brotzu, 09100, Cagliari, Italy
| | - Germano Orrù
- Department of Medical Sciences and Public Health, University of Cagliari. and Unit of Internal Medicine, Policlinico Universitario - AOU di Cagliari, Azienda Ospedaliero Universitaria, SS 554-Bivio Sestu, 09042, Monserrato, CA, Italy
| | - Stefano Del Giacco
- Department of Medical Sciences and Public Health, University of Cagliari. and Unit of Internal Medicine, Policlinico Universitario - AOU di Cagliari, Azienda Ospedaliero Universitaria, SS 554-Bivio Sestu, 09042, Monserrato, CA, Italy
| | - Ferdinando Coghe
- Medical Genetics, Department of Medical Sciences and Public Health, University of Cagliari, 09100, Cagliari, Italy
| | - Aldo Manzin
- Microbiology and Virology Unit, Department of Biomedical Sciences, University of Cagliari, 09042, Monserrato, Italy
| | - Luchino Chessa
- Department of Medical Sciences and Public Health, University of Cagliari. and Unit of Internal Medicine, Policlinico Universitario - AOU di Cagliari, Azienda Ospedaliero Universitaria, SS 554-Bivio Sestu, 09042, Monserrato, CA, Italy
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