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Unagami K, Yoshikawa M, Egawa H, Ohfuji S, Natori Y, Oki R, Mori T, Hattori H, Ishiwatari A, Kanzawa T, Shimizu T, Omoto K, Inui M, Masano Y, Ito T, Nakajima D, Babazono T, Takagi T, Nunoda S, Tomimaru Y, Imamura R, Miyagawa S, Toda K, Hatano E, Date H, Kyakuno M, Takahara S, Yuzawa K, Tanimine N, Ohdan H, Ishida H, Hirota Y. Delayed peak antibody titers after the second dose of SARS-CoV-2 vaccine in solid organ transplant recipients: Prospective cohort study. Vaccine 2024; 42:126221. [PMID: 39180977 DOI: 10.1016/j.vaccine.2024.126221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 08/05/2024] [Accepted: 08/09/2024] [Indexed: 08/27/2024]
Abstract
Poor post-vaccination production of antibody against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a concern among solid organ transplant (SOT) recipients. Furthermore, the timing and kinetics of antibody titers after the second vaccine dose are unknown. We conducted a multicenter prospective observational study that included 614 SOT recipients: 460 kidney, 53 heart, 50 liver, 20 lung, and 31 simultaneous pancreas-kidney (SPK). The participants received two doses of the mRNA vaccine (Pfizer BNT162b2 or Moderna mRNA-1273), as indicated. Serum samples were collected before the first and second vaccinations and at 1, 3, and 6 months after the second vaccine dose, which were then assessed for SARS-CoV-2 antibodies. The overall seropositivity rate was 43% at 1 month after administration of the second vaccine dose; it gradually increased to 68% at 3 months after second dose administration and to 70% at 6 months. In addition, recipient of kidney, lung or SPK transplants had lower antibody titers at the 3- and 6-month time points than did the other recipients. SOT recipients acquired SARS-CoV-2 S-IgG antibodies slowly, and the peak titer differed significantly from that of the general population.
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Affiliation(s)
- Kohei Unagami
- Department of Organ Transplant Medicine, Graduate School of Medicine, Tokyo Women's Medical University, Japan; Department of Nephrology, Graduate School of Medicine, Tokyo Women's Medical University, Japan; Department of Urology, Yochomachi Clinic, Tokyo, Japan
| | - Mikiko Yoshikawa
- Department of Organ Transplantation and General Surgery, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - Hiroto Egawa
- Department of Surgery, Graduate School of Medicine, Tokyo Women's Medical University, Japan.
| | - Satoko Ohfuji
- Department of Public Health, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Yoichiro Natori
- Division of Infectious Disease, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, United States
| | - Rikako Oki
- Department of Organ Transplant Medicine, Graduate School of Medicine, Tokyo Women's Medical University, Japan; Department of Nephrology, Graduate School of Medicine, Tokyo Women's Medical University, Japan
| | - Tomomi Mori
- Department of Diabetology and Metabolism, Graduate School of Medicine, Tokyo Women's Medical University, Japan
| | - Hidetoshi Hattori
- Department of Cardiology, Graduate School of Medicine, Tokyo Women's Medical University, Japan
| | | | - Taichi Kanzawa
- Department of Urology, Graduate School of Medicine, Tokyo Women's Medical University, Japan; Department of Urology, Yochomachi Clinic, Tokyo, Japan
| | - Tomokazu Shimizu
- Department of Organ Transplant Medicine, Graduate School of Medicine, Tokyo Women's Medical University, Japan; Department of Urology, Graduate School of Medicine, Tokyo Women's Medical University, Japan; Department of Urology, Yochomachi Clinic, Tokyo, Japan
| | - Kazuya Omoto
- Department of Urology, Graduate School of Medicine, Tokyo Women's Medical University, Japan; Department of Urology, Yochomachi Clinic, Tokyo, Japan
| | - Masashi Inui
- Department of Urology, Graduate School of Medicine, Tokyo Women's Medical University, Japan; Department of Urology, Yochomachi Clinic, Tokyo, Japan
| | - Yuuki Masano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takashi Ito
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Daisuke Nakajima
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tetsuya Babazono
- Department of Diabetology and Metabolism, Graduate School of Medicine, Tokyo Women's Medical University, Japan
| | - Toshio Takagi
- Department of Urology, Graduate School of Medicine, Tokyo Women's Medical University, Japan
| | - Shinichi Nunoda
- Department of Therapeutic Strategy for Severe Heart Failure, Graduate School of Medicine, Tokyo Women's Medical University, Japan
| | - Yoshito Tomimaru
- Department of Gastroenterological Surgery, Osaka University, Graduate School of Medicine, Japan
| | - Ryoichi Imamura
- Department of Urology, Osaka University, Graduate School of Medicine, Japan
| | - Shigeru Miyagawa
- Department of Cardiovascular Surgery, Osaka University, Graduate School of Medicine, Japan
| | - Koichi Toda
- Department of Cardiovascular Surgery, Osaka University, Graduate School of Medicine, Japan
| | - Etsuro Hatano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Miyaji Kyakuno
- Department of Renal Transplantation, Takatsuki General Hospital, Osaka Metropolitan University, Osaka, Japan
| | - Shiro Takahara
- Department of Renal Transplantation, Kansai Medical Clinic, Osaka Metropolitan University, Osaka, Japan
| | - Kenji Yuzawa
- Department of Transplantation Surgery, National Hospital Organization Mito Medical Center, Ibaraki, Japan
| | - Naoki Tanimine
- Department of Gastroenterological and Transplant Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hideki Ohdan
- Department of Gastroenterological and Transplant Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hideki Ishida
- Department of Organ Transplant Medicine, Graduate School of Medicine, Tokyo Women's Medical University, Japan
| | - Yoshio Hirota
- Clinical Epidemiology Research Center, Medical Co. LTA (SOUSEIKAI), Fukuoka, Japan
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2
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Yamanaga S, Shimata K, Ohfuji S, Yoshikawa M, Natori Y, Hibi T, Yuzawa K, Egawa H. Excess mortality in COVID-19-affected solid organ transplant recipients across the pandemic. Am J Transplant 2024; 24:1495-1508. [PMID: 38514016 DOI: 10.1016/j.ajt.2024.03.016] [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: 09/08/2023] [Revised: 03/05/2024] [Accepted: 03/12/2024] [Indexed: 03/23/2024]
Abstract
The excess mortality of coronavirus disease 2019 (COVID-19) solid organ transplant recipients (SOTRs) throughout the pandemic remains unclear. This prospective cohort study based on the Japanese nationwide registry included 1632 SOTRs diagnosed with COVID-19 between February 1, 2020, and July 31, 2022, categorized based on dominant phases of variants of concern (VOCs): Waves 1 to 3 (Beta), 4 (Alpha), 5 (Delta), 6 (Omicron BA.1/BA.2), and 7 (Omicron BA.5). Excess mortality of COVID-19-affected SOTRs was analyzed by calculating standardized mortality ratios (SMRs). Overall, 1632 COVID-19-confirmed SOTRs included 1170 kidney, 408 liver, 25 lung, 20 heart, 1 small intestine, and 8 multiorgan recipients. Although disease severity and all-cause mortality decreased as VOCs transitioned, SMRs of SOTRs were consistently higher than those of the general population throughout the pandemic, showing a U-shaped gap that peaked toward the Omicron BA.5 phase; SMR (95% CI): 6.2 (3.1-12.5), 4.0 (1.5-10.6), 3.0 (1.3-6.7), 8.8 (5.3-14.5), and 21.9 (5.5-87.6) for Waves 1 to 3 (Beta), Wave 4 (Alpha), Wave 5 (Delta), Wave 6 (Omicron BA.1/2), and Wave 7 (Omicron BA.5), respectively. In conclusion, COVID-19 SOTRs had greater SMRs than the general population across the pandemic. Vaccine boosters, immunosuppression optimization, and other protective measures, particularly for older SOTRs, are paramount.
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Affiliation(s)
- Shigeyoshi Yamanaga
- Department of Surgery, Japanese Red Cross Kumamoto Hospital, Nagamine-Minami, Higashi Ward, Kumamoto, Japan
| | - Keita Shimata
- Department of Pediatric Surgery and Transplantation, Kumamoto University Graduate School of Medical Sciences, Honjō, Chuo Ward, Kumamoto, Japan
| | - Satoko Ohfuji
- Department of Public Health, Osaka Metropolitan University Graduate School of Medicine, Asahimachi, Abeno Ward, Osaka, Japan
| | - Mikiko Yoshikawa
- Organ Transplantation and General Surgery, Kyoto Prefectural University of Medicine, Kajiichō, Kamigyo Ward, Kyoto, Japan
| | - Yoichiro Natori
- Solid Organ Transplant Infectious Diseases, Miami Transplant Institute, Jackson Health System, Miami, Florida, USA; Division of Infectious Diseases, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Taizo Hibi
- Department of Pediatric Surgery and Transplantation, Kumamoto University Graduate School of Medical Sciences, Honjō, Chuo Ward, Kumamoto, Japan.
| | - Kenji Yuzawa
- Department of Transplantation Surgery, National Hospital Organization Mito Medical Center, Sakuranosato, Ibaraki, Higashiibaraki District, Ibaraki, Japan
| | - Hiroto Egawa
- Department of Surgery, Tokyo Women's Medical University, Kawadacho, Shinjuku Ward, Tokyo, Japan
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Kawashiro K, Suzuki R, Nogimori T, Tsujino S, Iwahara N, Hirose T, Okada K, Yamamoto T, Fukuhara T, Hotta K, Shinohara N. Neutralizing antibody responses and cellular responses against SARS-CoV-2 Omicron subvariants after mRNA SARS-CoV-2 vaccination in kidney transplant recipients. Sci Rep 2024; 14:12176. [PMID: 38806644 PMCID: PMC11133393 DOI: 10.1038/s41598-024-63147-z] [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: 01/12/2024] [Accepted: 05/24/2024] [Indexed: 05/30/2024] Open
Abstract
Although the mRNA SARS-CoV-2 vaccine has improved the mortality rate in the general population, its efficacy against rapidly mutating virus strains, especially in kidney transplant recipients, remains unclear. We examined the anti-SARS-CoV-2 spike protein IgG antibody and neutralizing antibody titers and cellular immunity against B.1.1, BA.1, and BA.5 antigens in 73 uninfected kidney recipients and 16 uninfected healthy controls who received three doses of an mRNA SARS-CoV-2 vaccine. The IgG antibody titers were significantly lower in recipients than in healthy controls. Similarly, neutralizing antibody titers against three viral variants were significantly lower in recipients. When the virus was mutated, the neutralizing antibody titers decreased significantly in both groups. In cellular immunity analysis, the number of spike-specific CD8 + non-naïve T cells against three variants significantly decreased in recipients. Conversely, the frequency of spike-specific Th2 CD4 + T-cells in recipients was higher than that in healthy controls. Nineteen recipients and six healthy controls also received a bivalent omicron-containing booster vaccine, leading to increase IgG and neutralizing antibody titers in both groups. After that, eleven recipients and five healthy controls received XBB.1.5 monovalent vaccines, increasing the neutralizing antibody titers against not only XBB.1.5, but also EG.5.1 and BA.2.86 antigens in kidney recipients. Although kidney recipients did not gain sufficient immunity against Omicron BA.5 with the third dose of vaccine, humoral response against mutant SARS-CoV-2 lineages significantly increased after bivalent Omicron-containing booster vaccine and the XBB.1.5 monovalent vaccine. Therefore, it is important for kidney recipients to continue to administer updated vaccines.
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Affiliation(s)
- Keita Kawashiro
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - Rigel Suzuki
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Vaccine Research and Development: HU-IVReD, Hokkaido University, Sapporo, Japan
| | - Takuto Nogimori
- Laboratory of Precision Immunology, Center for Intractable Diseases and ImmunoGenomics, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Japan
| | - Shuhei Tsujino
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Naoya Iwahara
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - Takayuki Hirose
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - Kazufumi Okada
- Data Science Center, Promotion Unit, Institute of Health Science Innovation for Medical Care, Hokkaido University Hospital, Sapporo, Japan
| | - Takuya Yamamoto
- Laboratory of Precision Immunology, Center for Intractable Diseases and ImmunoGenomics, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Japan.
- Laboratory of Aging and Immune Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan.
- Department of Virology and Immunology, Graduate School of Medicine, Osaka University, Suita, Japan.
| | - Takasuke Fukuhara
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan.
- Institute for Vaccine Research and Development: HU-IVReD, Hokkaido University, Sapporo, Japan.
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Suita, Japan.
- AMED-CREST, Japan Agency for Medical Research and Development (AMED), Tokyo, Japan.
| | - Kiyohiko Hotta
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan.
| | - Nobuo Shinohara
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
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Chih S, Clarke BA, Albert M, Buchan CA, Kafil TS, Kim DH, Kumar D, Smith SJ, Solera Rallo JT, Stubbs MJ, McDonald MA. The COVID-19 Pandemic and Adult Cardiac Transplantation: Impact, Interventions, and Implications. Can J Cardiol 2023; 39:853-864. [PMID: 36965667 PMCID: PMC10035809 DOI: 10.1016/j.cjca.2023.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 03/13/2023] [Accepted: 03/17/2023] [Indexed: 03/27/2023] Open
Abstract
In this review, we provide a comprehensive overview of the impact of the COVID-19 pandemic on adult heart transplantation. We highlight the decline in the number of adult transplantations performed throughout the pandemic as a consequence of restrictions imposed on individual programs and hospitals. There were challenges to maintaining cardiac transplant activity at multiple levels, including organ donation in intensive care units, logistical difficulties with organ procurement, and rapidly changing resource considerations at health system and jurisdictional levels. We also review the impact of COVID-19 on cardiac transplant recipients. Despite the high rates of morbidity and mortality observed during the initial phases of the pandemic among heart transplant patients infected with COVID-19, the availability of effective vaccines, pre-exposure prophylaxis, and specific antiviral therapies have drastically improved outcomes over time. Vaccines have proven to be safe and effective in reducing infections and illness severity, but specific considerations in the immunocompromised solid organ transplant population apply, including the need for additional booster doses to achieve sufficient immunisation. We further outline the strong rationale for vaccination before transplantation wherever possible. Finally, the COVID-19 response created a number of barriers to safe and efficient post-transplantation care. Given the need for frequent evaluation and monitoring, especially in the first several months after cardiac transplantation, the pandemic provided the impetus to improve virtual care delivery and explore noninvasive rejection surveillance through gene expression profiling. We hope that lessons learned will allow us to prepare and pivot effectively during future pandemics and health care emergencies.
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Affiliation(s)
- Sharon Chih
- Division of Cardiology, Heart Failure, and Transplantation, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Brian A Clarke
- Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Martin Albert
- Department of Medicine and Critical Care, Hôpital du Sacré-Coeur de Montréal, Montréal, Québec, Canada; CIUSSS-NIM Research Centre, Department of Surgery, Montréal Heart Institute, Montréal, Québec, Canada; Department of Medicine, Université de Montréal, Montréal, Québec, Canada
| | - C Arianne Buchan
- Division of Infectious Diseases, Department of Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada; Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada; Ottawa Hospital Research Institute, Canada, Ottawa, Ontario, Canada
| | - Tahir S Kafil
- Division of Cardiology, Heart Failure, and Transplantation, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Daniel H Kim
- Division of Cardiology, Mazankowski Alberta Heart Institute, University of Alberta, Canada
| | - Deepali Kumar
- Division of Infectious Disease, Transplant Infectious Disease, Ajmera Transplant Centre, University of Toronto, Toronto, Ontario, Canada
| | - Stuart J Smith
- Division of Cardiology, London Health Sciences Centre, Western University, London, Canada
| | - Javier Tomas Solera Rallo
- Division of Infectious Disease, Transplant Infectious Disease, Ajmera Transplant Centre, University of Toronto, Toronto, Ontario, Canada
| | - Michael J Stubbs
- Division of Cardiology, University Health Network, Ajmera Transplant Centre, University of Toronto, Toronto, Ontario, Canada
| | - Michael A McDonald
- Division of Cardiology, University Health Network, Ajmera Transplant Centre, University of Toronto, Toronto, Ontario, Canada.
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Kabbani D, Yotis DM, Ferreira VH, Shalhoub S, Belga S, Tyagi V, Ierullo M, Kulasingam V, Hébert MJ, West L, Delisle JS, Racine N, De Serres SA, Cardinal H, Dieudé M, Humar A, Kumar D. Immunogenicity, Safety, and Breakthrough Severe Acute Respiratory Syndrome Coronavirus 2 Infections After Coronavirus Disease 2019 Vaccination in Organ Transplant Recipients: A Prospective Multicenter Canadian Study. Open Forum Infect Dis 2023; 10:ofad200. [PMID: 37213422 PMCID: PMC10199121 DOI: 10.1093/ofid/ofad200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 04/11/2023] [Indexed: 05/23/2023] Open
Abstract
Background Solid organ transplant (SOT) recipients are at risk for severe coronavirus disease 2019 (COVID-19), despite vaccination. Our study aimed to elucidate COVID-19 vaccine immunogenicity and evaluate adverse events such as hospitalization, rejection, and breakthrough infection in a SOT cohort. Methods We performed a prospective, observational study on 539 adult SOT recipients (age ≥18 years old) recruited from 7 Canadian transplant centers. Demographics including transplant characteristics, vaccine types, and immunosuppression and events such as hospitalization, infection, and rejection were recorded. Follow ups occurred every 4-6 weeks postvaccination and at 6 and 12 months from first dose. Serum was processed from whole blood to measure anti-receptor binding domain (RBD) antibodies of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike protein to assess immunogenicity. Results The COVID-19 vaccines were found to be safe in SOT recipients with low rates of rejection requiring therapy (0.7%). Immunogenicity improved after the third vaccine dose, yet 21% developed no anti-RBD response. Factors such as older age, lung transplantation, chronic kidney disease, and shorter duration from transplant were associated with decreased immunogenicity. Patients with at least 3 doses were protected from hospitalization when experiencing breakthrough infections. Significantly increased anti-RBD levels were observed in patients who received 3 doses and had breakthrough infection. Conclusions Three or four doses of COVID-19 vaccines were safe, increased immunogenicity, and protected against severe disease requiring hospitalization. Infection paired with multiple vaccinations significantly increased anti-RBD response. However, SOT populations should continue to practice infection prevention measures, and they should be prioritized for SARS-CoV-2 pre-exposure prophylactics and early therapeutics.
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Affiliation(s)
- Dima Kabbani
- Correspondence: Dima Kabbani, MD, MSc , Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, 1-124 Clinical Sciences Building 11304 83 Avenue Edmonton, AB Canada T6G 2G3 (). Deepali Kumar, MD, MSc, FRCP(C), FAST, Ajmera Transplant Centre, University Health Network, 585 University Ave., 11-PMB-174, Toronto, ON, Canada M5G 2N2 ()
| | - Demitra M Yotis
- Canadian Donation and Transplantation Research Program (CDTRP), Edmonton, Alberta, Canada
| | - Victor H Ferreira
- Transplant Infectious Diseases and Ajmera Transplant Centre, University Health Network, Toronto, Ontario, Canada
| | - Sarah Shalhoub
- Division of Infectious Diseases, Department of Medicine, Western University, London, Ontario, Canada
| | - Sara Belga
- Division of Infectious Diseases, Department of Medicine, University of British Columbia, and Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada
| | - Varalika Tyagi
- Division of Infectious Diseases, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Matthew Ierullo
- Transplant Infectious Diseases and Ajmera Transplant Centre, University Health Network, Toronto, Ontario, Canada
| | - Vathany Kulasingam
- Laboratory Medicine Program, University Health Network, University Health Network, University of Toronto, Ontario, Canada
| | - Marie-Josée Hébert
- Canadian Donation and Transplantation Research Program (CDTRP), Edmonton, Alberta, Canada
- Department of Medicine, Centre Hospitalier de l’Université de Montréal, Faculté de Médecine, Université de Montréal, Quebec, Canada
| | - Lori West
- Canadian Donation and Transplantation Research Program (CDTRP), Edmonton, Alberta, Canada
- Pediatric Cardiac Transplantation Program, Stollery Children's Hospital, University of Alberta, Edmonton, Alberta, Canada
- Alberta Transplant Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Jean-Sébastien Delisle
- Canadian Donation and Transplantation Research Program (CDTRP), Edmonton, Alberta, Canada
- Centre de Recherche de l’Hôpital Maisonneuve-Rosemoent, Montréal, Quebec, Canada
- Department of Medicine, Université de Montréal, Montréal, Quebec, Canada
| | - Normand Racine
- Institut de Cardiologie de Montréal, Faculté de Médecine, Université de Montréal, Montréal, Quebec, Canada
| | - Sacha A De Serres
- Transplantation Unit, Renal Division, Department of Medicine, University Health Center of Quebec, Faculty of Medicine, Laval University, Québec, Québec, Canada
| | - Héloïse Cardinal
- Centre de Recherche de l’Hôpital Maisonneuve-Rosemoent, Montréal, Quebec, Canada
| | - Mélanie Dieudé
- Canadian Donation and Transplantation Research Program (CDTRP), Edmonton, Alberta, Canada
- Héma-Québec, Montréal, Québec, Canada
- Microbiology, Infectiology and Immunology Department, Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada
- Research Center, Centre Hospitalier de L’Université de Montréal (CHUM), Montréal, Québec, Canada
| | - Atul Humar
- Transplant Infectious Diseases and Ajmera Transplant Centre, University Health Network, Toronto, Ontario, Canada
| | - Deepali Kumar
- Correspondence: Dima Kabbani, MD, MSc , Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, 1-124 Clinical Sciences Building 11304 83 Avenue Edmonton, AB Canada T6G 2G3 (). Deepali Kumar, MD, MSc, FRCP(C), FAST, Ajmera Transplant Centre, University Health Network, 585 University Ave., 11-PMB-174, Toronto, ON, Canada M5G 2N2 ()
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6
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Baran DA, Kapoor S, Grewal J, Andries G, Camacho M. Long term follow-up of the tacrolimus in combination, tacrolimus alone compared (TICTAC) trial. J Heart Lung Transplant 2023; 42:838-845. [PMID: 36870863 DOI: 10.1016/j.healun.2023.01.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 01/15/2023] [Accepted: 01/26/2023] [Indexed: 02/09/2023] Open
Abstract
BACKGROUND Tacrolimus (TAC) monotherapy has been compared to TAC and mycophenolate mofetil (MMF) in the randomized Tacrolimus in Combination, Tacrolimus Alone Compared (TICTAC) trial. Long term results are now reported. METHODS Demographics are presented with descriptive statistics. Time to event was determined with Kaplan-Meier plots and Mantel-Cox Logrank statistics used to compare groups. RESULTS One hundred and forty-seven (98 %) of the initial 150 TICTAC trial patients had long-term follow-up data available. The median follow-up was 13.4 years (interquartile range 7.2-15.1 years). Post-transplant survival at 5, 10 and 15 years in the TAC monotherapy group was 84.5 %, 66.9 %, and 52.7 %, and 94.4 %, 78.2 % and 56.1 % for patients randomized to TAC / MMF (p = 0.19 logrank). The freedom from cardiac allograft vasculopathy (≥grade 1) was 100 %, 87.5 %, 69.3 % and 46.5 % at 1, 5, 10 and 15 years in the monotherapy group and 100 %, 76.9 %, 68.1 % and 54.4 % in the TAC/MMF group respectively (p = 0.96 logrank). Crossover of treatment assignment did not alter these findings. The freedom from dialysis or renal replacement was 92.8 %, 84.2 % and 68.4 % for TAC monotherapy patients versus 100 %, 93.4 % and 82.3 % for TAC/MMF patients at 5, 10 and 15-years post-transplant (p = 0.15 logrank). CONCLUSIONS Patients randomized to TAC/ MMF with 8-week steroid weaning had comparable outcomes to those with similar steroid regimen but discontinuation of MMF at 2 week post-transplant. The best outcomes were noted for patients initiated on TAC/ MMF including those where MMF was discontinued for intolerance. Both strategies are reasonable alternatives for patients post heart transplant. CONDENSED ABSTRACT Tacrolimus monotherapy was compared to TAC and mycophenolate mofetil without long term steroids in the randomized Tacrolimus in Combination, Tacrolimus Alone Compared (TICTAC) trial. Post-transplant survival at 5, 10 and 15 years in the TAC monotherapy group was 84.5%, 66.9 %, and 52.7 %, and 94.4 %, 78.2 % and 56.1 % for patients randomized to TAC / MMF (p = 0.19 logrank). Cardiac allograft vasculopathy and kidney failure were similar between groups. Immunosuppression should be individualized to avoid over treating some patients while undertreating others.
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Affiliation(s)
- David A Baran
- Department of Cardiology, Cleveland Clinic Heart, Vascular and Thoracic Institute, Cleveland, Ohio.
| | - Saurabh Kapoor
- Division of Cardiology, Newark Beth Israel Medical Center, Heart Failure Treatment and Transplant Program, Newark, New Jersey
| | - Jagpreet Grewal
- Division of Cardiology, Newark Beth Israel Medical Center, Heart Failure Treatment and Transplant Program, Newark, New Jersey
| | - Gabriela Andries
- Division of Cardiology, Newark Beth Israel Medical Center, Heart Failure Treatment and Transplant Program, Newark, New Jersey
| | - Margarita Camacho
- Division of Cardiothoracic Surgery, Newark Beth Israel Medical Center, Newark, New Jersey
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7
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Pérez-Flores I, Juarez I, Aiffil Meneses AS, Lopez-Gomez A, Romero NC, Rodriguez-Cubillo B, Moreno de la Higuera MA, Peix-Jiménez B, Gonzalez-Garcia R, Baos-Muñoz E, Vilela AA, Gómez Del Moral M, Martínez-Naves E, Sanchez-Fructuoso AI. Role of mTOR inhibitor in the cellular and humoral immune response to a booster dose of SARS-CoV-2 mRNA-1273 vaccine in kidney transplant recipients. Front Immunol 2023; 14:1111569. [PMID: 36817489 PMCID: PMC9931894 DOI: 10.3389/fimmu.2023.1111569] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 01/13/2023] [Indexed: 02/05/2023] Open
Abstract
Background Immunocompromised patients have an increased risk of developing severe COVID disease, as well as a tendency to suboptimal responses to vaccines. The objective of this study was to evaluate the specific cellular and humoral adaptive immune responses of a cohort of kidney transplant recipients (KTR) after 3 doses of mRNA-1273 vaccine and to determinate the main factors involved. Methods Prospective observational study in 221 KTR (149 non infected), 55 healthy volunteers (HV) and 23 dialysis patients (DP). We evaluated anti-spike (by quantitative chemiluminescence immunoassay) and anti-nucleocapsid IgG (ELISA), percentage of TCD4+ and TCD8+ lymphocytes producing IFNγ against S-protein by intracellular flow cytometry after Spike-specific 15-mer peptide stimulation and serum neutralizing activity (competitive ELISA) at baseline and after vaccination. Results Among COVID-19 naïve KTR, 54.2% developed cellular and humoral response after the third dose (vs 100% in DP and 91.7% in HV), 18% only showed cell-mediated response, 22.2% exclusively antibody response and 5.6% none. A correlation of neutralizing activity with both the IgG titer (r=0.485, p<0.001) and the percentage of S-protein-specific IFNγ-producing CD8-T cells (r=0.198, p=0.049) was observed. Factors related to the humoral response in naïve KTR were: lymphocytes count pre-vaccination >1000/mm3 [4.68 (1.72-12.73, p=0.003], eGFR>30 mL/min [7.34(2.72-19.84), p<0.001], mTOR inhibitors [6.40 (1.37-29.86), p=0.018]. Infected KTR developed a stronger serologic response than naïve patients (96.8 vs 75.2%, p<0.001). Conclusions KTR presented poor cellular and humoral immune responses following vaccination with mRNA-1273. The immunosuppression degree and kidney function of these patients play an important role, but the only modifiable factor with a high impact on humoral immunogenicity after a booster dose was an immunosuppressive therapy including a mTOR inhibitor. Clinical trials are required to confirm these results.
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Affiliation(s)
- Isabel Pérez-Flores
- Nephrology Department, Institute San Carlos for Medical Research (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), San Carlos Clinical University Hospital, Madrid, Spain
| | - Ignacio Juarez
- Immunology Department, Complutense University School of Medicine, Madrid, Spain,*Correspondence: Ignacio Juarez,
| | - Arianne S. Aiffil Meneses
- Nephrology Department, Institute San Carlos for Medical Research (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), San Carlos Clinical University Hospital, Madrid, Spain
| | - Ana Lopez-Gomez
- Immunology Department, Complutense University School of Medicine, Madrid, Spain
| | - Natividad Calvo Romero
- Nephrology Department, Institute San Carlos for Medical Research (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), San Carlos Clinical University Hospital, Madrid, Spain
| | - Beatriz Rodriguez-Cubillo
- Nephrology Department, Institute San Carlos for Medical Research (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), San Carlos Clinical University Hospital, Madrid, Spain
| | - María Angeles Moreno de la Higuera
- Nephrology Department, Institute San Carlos for Medical Research (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), San Carlos Clinical University Hospital, Madrid, Spain
| | - Belen Peix-Jiménez
- Nephrology Department, Institute San Carlos for Medical Research (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), San Carlos Clinical University Hospital, Madrid, Spain
| | | | - Elvira Baos-Muñoz
- Microbiology Department, Institute San Carlos for Medical Research (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), San Carlos Clinical University Hospital, Madrid, Spain
| | - Ana Arribi Vilela
- Microbiology Department, Institute San Carlos for Medical Research (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), San Carlos Clinical University Hospital, Madrid, Spain
| | | | | | - Ana Isabel Sanchez-Fructuoso
- Nephrology Department, Institute San Carlos for Medical Research (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), San Carlos Clinical University Hospital, Madrid, Spain
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Kodali L, Budhiraja P, Gea-Banacloche J. COVID-19 in kidney transplantation-implications for immunosuppression and vaccination. Front Med (Lausanne) 2022; 9:1060265. [PMID: 36507509 PMCID: PMC9727141 DOI: 10.3389/fmed.2022.1060265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 11/09/2022] [Indexed: 11/24/2022] Open
Abstract
COVID-19 pandemic continues to challenge the transplant community, given increased morbidity and mortality associated with the disease and poor response to prevention measures such as vaccination. Transplant recipients have a diminished response to both mRNA and vector-based vaccines compared to dialysis and the general population. The currently available assays to measure response to vaccination includes commercially available antibody assays for anti-Spike Ab, or anti- Receptor Binding Domain Ab. Positive antibody testing on the assays does not always correlate with neutralizing antibodies unless the antibody levels are high. Vaccinations help with boosting polyfunctional CD4+ T cell response, which continues to improve with subsequent booster doses. Ongoing efforts to improve vaccine response by using additional booster doses and heterologous vaccine combinations are underway. There is improved antibody response in moderate responders; however, the ones with poor response to initial vaccination doses, continue to have a poor response to sequential boosters. Factors associated with poor vaccine response include diabetes, older age, specific immunosuppressants such as belatacept, and high dose mycophenolate. In poor responders, a decrease in immunosuppression can increase response to vaccination. COVID infection or vaccination has not been associated with an increased risk of rejection. Pre- and Post-exposure monoclonal antibodies are available to provide further protection against COVID infection, especially in poor vaccine responders. However, the efficacy is challenged by the emergence of new viral strains. A recently approved bivalent vaccine offers better protection against the Omicron variant.
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Affiliation(s)
- Lavanya Kodali
- Department of Internal Medicine, Mayo Clinic, Phoenix, AZ, United States
- Division of Nephrology, Transplant Center, Mayo Clinic, Phoenix, AZ, United States
| | - Pooja Budhiraja
- Department of Internal Medicine, Mayo Clinic, Phoenix, AZ, United States
- Division of Nephrology, Transplant Center, Mayo Clinic, Phoenix, AZ, United States
| | - Juan Gea-Banacloche
- Division of Clinical Research, National Institute of Allergy and Infectious Diseases, Bethesda, MD, United States
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